Gold ore concentrator
Publish: 2021-04-21 10:58:33
1. A complete set of beneficiation and metallurgy process
Gold beneficiation
crushing and grinding of gold ore
the content of gold in the ore is very low. In order to extract gold, it is necessary to crush and grind the ore and preconcentrate or separate gold from the ore by mineral processing. According to the investigation, jaw crusher is often used in China's gold concentrators for coarse crushing, standard cone crusher for medium crushing, and short head cone crusher and counter roller crusher for fine crushing. Medium and small gold concentrators mostly adopt two-stage one closed circuit crushing process, while large gold concentrators adopt three-stage one closed circuit crushing process<
Gold beneficiation gravity separation technology
gravity separation and flotation are widely used in gold beneficiation, and gravity separation plays a very important role in placer gold proction
gravity separation is widely used in rock gold mines. It is mostly used as an auxiliary process to recover coarse gold in grinding circuit, which creates favorable conditions for flotation and cyanidation process, improves beneficiation indexes, increases the total recovery of gold, and plays a positive role in increasing output and recing cost<
more than 10 gold concentrators in Shandong Province have adopted gravity separation process, the average total recovery rate can be increased by 2% ~ 3%, and the enterprise has good economic benefits. According to incomplete statistics, it can make a profit of several million yuan per year. Henan, Hunan, Inner Mongolia and other provinces (regions) have also achieved good results, the main equipment used are chute, shaker, jig and short cone cyclone<
Gold beneficiation - flotation technology
flotation method is widely used in rock gold mines. According to the survey, about 80% of rock gold mines in China adopt flotation method for gold separation, and the concentrate proced is mostly sent to gold smelters for treatment
there are usually two kinds of flotation processes: preferential flotation and mixed flotation. In recent years, new progress has been made in technological process improvement and reagent addition system, and flotation recovery has been improved significantly. According to the investigation results of flotation process indexes of more than 40 gold concentrators in China, the flotation recovery rate of sulfide ore is 90%, and a few of them are as high as 95% ~ 97%; The recovery of oxide ore is about 75%; Some of them are 80% - 85%
in recent years, there are a lot of innovation and scientific research achievements in flotation process, and the effect is obvious. Stage grinding flotation process and gravity flotation combined process are the main trend of flotation technology development in China. For example, Xiangxi Gold Mine adopts gravity flotation combined process to grind ore in stages and separate ore in stages, which can obtain better indexes and increase recovery by more than 6%; Jiaojia gold mine, Wulong gold mine, Wenyu Gold Mine and Dongchuang gold mine have also achieved certain results
of course, like other methods, flotation method is not omnipotent, and it is impossible to be effective for all gold bearing ores. The ore properties should be mainly considered, and various argumentation and tests should be carried out when selecting the technological process. In recent years, in order to improve the separation effect, in the process of continuous improvement, many improvements and researches have been made on the reagent addition system and mixed medication, and new progress has been made in the automatic control of dosing<
gold extraction process of gold beneficiation
gold extraction by mixed mercury method
mixed mercury method is an ancient gold extraction process, which is simple, economical and suitable for the recovery of coarse-grained monomer gold. This method is still used in many gold mines in China. With the development of gold proction and the progress of science and technology, the process of extracting gold by mixed mercury method has been improved and perfected. Due to the increasingly stringent requirements of environmental protection, some mines have cancelled the mercury mixing operation and replaced it by gravity separation, flotation and cyanidation
in the proction of gold, the process of extracting gold by mixed mercury method still plays an important role, and has been applied at home and abroad. At present, this technology has been applied in many gold mines, such as Zhangjiakou, Hebei, Ergou, Liaoning, Jiapigou, Jilin and Yinan, Shandong. Liaoning Ergou gold mine was originally a single flotation process. According to the nature of ore, it was changed into a combined process of mixed mercury and flotation. The total recovery was increased by 78.1% (the recovery of mixed mercury was 64.6%), the grade of tailings was reced from 0.74g/t to 0.32g/t, and the annual benefit was 1.58 million yuan. The key to the process of gold extraction by mixed mercury method is how to take protective measures to eliminate mercury pollution<
cyanidation gold extraction process
cyanidation gold extraction process is the main method to extract gold from ore or concentrate. The process of gold extraction by cyanidation includes: cyanidation leaching, washing and filtration of leaching pulp, extraction of gold from cyanidation solution or cyanidation pulp and smelting of finished procts. There are two kinds of gold extraction processes in the existing cyanidation plants of gold mines in China. One is the so-called conventional cyanidation process (CCD method and CCF method) in which the thickener is used for continuous countercurrent washing and zinc powder is used to replace the precipitation to recover gold. The other is that there is no need for filtration and washing, CIP process and CIL process were used to recover gold from cyanide pulp directly by activated carbon adsorption< The conventional cyanidation process can be divided into two types according to the different materials: one is the cyanidation plant which processes flotation gold concentrate or mixed mercury and gravity tailings. Most of them are large state-owned mines. For example, Jinchangyu in Hebei Province; Wulong, Liaoning, Yangzhaiyu, Henan; Zhaoyuan, Xincheng, Jiaojia and Sanshan gold mines in Shandong Province. The other is a gold extraction plant which processes argillaceous oxide ore and uses whole slime stirring cyanidation. Such as Jilin trench; Tuanjiegou, Heilongjiang Province; Xinqiao gold and silver mine in Anhui Province. As early as 1930s, cyanidation process has been used in China. During 1936-1938, Jinguashi gold mine in Taiwan used cyanidation zinc powder replacement process to extract gold with an annual output of 150000 taels. After entering the 1960s, in order to adapt to the development of national economy and vigorously develop the proction of mineral gold, the intermittent mechanical agitation cyanidation process and continuous agitation cyanidation process were successively adopted in some mines to replace the percolation cyanidation process. In 1967, the continuous mechanical agitation cyanidation process was first realized in Lingshan and Linglong gold concentrators of Zhaoyuan gold mine, Shandong Province. The cyanidation rate increased from 70% to 93.23%. Since then, the continuous mechanical agitation cyanidation process has been rapidly promoted in major gold mines in China
in recent years, new progress has been made in the scientific research of new processes such as thiourea extraction, thiosulfate extraction, preoxidation bacterial leaching, pressure catalytic leaching and resin adsorption. In 1979, Changchun Gold Research Institute successfully carried out the test of thiourea gold extraction. In 1984, a thiourea gold extraction workshop was built in Longshui mine, Guangxi, with a daily processing capacity of 10-20t of flotation gold concentrate. Although other processes are in the stage of experimental research and are preparing to be put into operation, it is enough to show that the gold extraction technology in China has developed to a new level< In China's gold resources, low-grade oxidized ores account for a certain proportion, so it is not economical to use the conventional cyanidation process to extract gold from such ores, but the heap leaching process still has economic benefits. At the end of 1970s, China began to study the heap leaching process of low-grade gold bearing oxide ore. after the successful small-scale proction of Hushan gold mine in Dandong, Liaoning Province, it was successively applied in some mines in Linghu, Yindongpo, Mojiang, Chongli, Hebei, Chifeng, Inner Mongolia and other areas, with satisfactory economic results, It opens up a way for the development and utilization of low grade gold bearing oxide ore. The heap leaching process has developed rapidly because of its simple process, easy operation, low investment, good benefit and fast start-up. The application of granulation technology and activated carbon adsorption column, as well as the development of gold loaded carbon desorption electrodeposition process, have added new vitality to the popularization and application of heap leaching gold extraction process<
gold smelting and recovery
gold smelting is the last process in gold proction, and its proct is finished gold. Smelting can be divided into roughing and refining. The refined and rough procts are alloy (commonly known as quality gold). Most of the local gold in China's gold mines is quality gold, which is sold directly to banks. Gold rich ore blocks and various gold concentrates are transported to non-ferrous smelters for processing and refining of finished gold (commonly known as gold content). Over the past 40 years since the founding of the people's Republic of China, gold smelting and comprehensive recovery have developed rapidly, the level of smelting technology and equipment has been continuously improved, and the smelting cost has been decreasing, which has promoted the development of gold proction< Before the 1970s, gold proction was in the initial stage of development. Except for a few mines which began to use cyanidation process, the local gold was mainly smelted from natural gold and concentrate from placer gravity separation and mercury paste from mixed mercury process, Local gold accounts for only 30% of the total output, and 70% of the gold is recovered by nonferrous smelters< Since 1970, gold proction has been developing graally, cyanidation technology has been widely used, and the amount of local gold in mines has been increasing. In 1985, the output of finished gold in mines accounted for 70% of the national gold output, and most of the concentrate procts proced by concentrators were proced by cyanidation
the traditional crucible method is mostly used for in-situ smelting in mines. Due to the different proction process and material properties, the gold content of the resultant gold is also different. Because the gold content is not high or the silver content is not priced, some mines adopt the chemical method to remove impurities, remelting or electrolysis method to separate and refine gold and silver in order to improve the quality and economic benefits
recovery of associated gold in nonferrous smelters
in gold proction, the recovery of associated gold from polymetallic ore occupies a considerable position. Gold, copper, lead and other non-ferrous metals are selected into the concentrate. In copper and lead smelting, gold and silver are recovered. In order to increase gold proction, some non-ferrous smelters in China have built comprehensive precious metal recovery workshops. By 1985, there were more than 20 smelters in China. In addition to Shenyang smelter, Zhuzhou Smelter, Shanghai smelter, Yunnan Smelter, Chongqing smelter, Wuhan smelter, Fuchunjiang smelter, Tianjin smelter, Taiyuan smelter, etc. Among them, the output of associated gold in the three major smelters of Shenyang smelter, Shangye smelter and Zhuzhou Smelter accounts for more than 90% of the total output of associated gold in China, which is an important force in China's gold proction. The recovery of associated gold in these enterprises is based on the fact that in the process of copper and lead smelting, gold and silver are enriched in the crude copper and lead. During the electrolytic refining of crude copper and lead, gold and silver are deposited in the electrolytic anode slime. Therefore, extracting gold and silver from the anode slime is the main way to recover associated gold and silver.
Gold beneficiation
crushing and grinding of gold ore
the content of gold in the ore is very low. In order to extract gold, it is necessary to crush and grind the ore and preconcentrate or separate gold from the ore by mineral processing. According to the investigation, jaw crusher is often used in China's gold concentrators for coarse crushing, standard cone crusher for medium crushing, and short head cone crusher and counter roller crusher for fine crushing. Medium and small gold concentrators mostly adopt two-stage one closed circuit crushing process, while large gold concentrators adopt three-stage one closed circuit crushing process<
Gold beneficiation gravity separation technology
gravity separation and flotation are widely used in gold beneficiation, and gravity separation plays a very important role in placer gold proction
gravity separation is widely used in rock gold mines. It is mostly used as an auxiliary process to recover coarse gold in grinding circuit, which creates favorable conditions for flotation and cyanidation process, improves beneficiation indexes, increases the total recovery of gold, and plays a positive role in increasing output and recing cost<
more than 10 gold concentrators in Shandong Province have adopted gravity separation process, the average total recovery rate can be increased by 2% ~ 3%, and the enterprise has good economic benefits. According to incomplete statistics, it can make a profit of several million yuan per year. Henan, Hunan, Inner Mongolia and other provinces (regions) have also achieved good results, the main equipment used are chute, shaker, jig and short cone cyclone<
Gold beneficiation - flotation technology
flotation method is widely used in rock gold mines. According to the survey, about 80% of rock gold mines in China adopt flotation method for gold separation, and the concentrate proced is mostly sent to gold smelters for treatment
there are usually two kinds of flotation processes: preferential flotation and mixed flotation. In recent years, new progress has been made in technological process improvement and reagent addition system, and flotation recovery has been improved significantly. According to the investigation results of flotation process indexes of more than 40 gold concentrators in China, the flotation recovery rate of sulfide ore is 90%, and a few of them are as high as 95% ~ 97%; The recovery of oxide ore is about 75%; Some of them are 80% - 85%
in recent years, there are a lot of innovation and scientific research achievements in flotation process, and the effect is obvious. Stage grinding flotation process and gravity flotation combined process are the main trend of flotation technology development in China. For example, Xiangxi Gold Mine adopts gravity flotation combined process to grind ore in stages and separate ore in stages, which can obtain better indexes and increase recovery by more than 6%; Jiaojia gold mine, Wulong gold mine, Wenyu Gold Mine and Dongchuang gold mine have also achieved certain results
of course, like other methods, flotation method is not omnipotent, and it is impossible to be effective for all gold bearing ores. The ore properties should be mainly considered, and various argumentation and tests should be carried out when selecting the technological process. In recent years, in order to improve the separation effect, in the process of continuous improvement, many improvements and researches have been made on the reagent addition system and mixed medication, and new progress has been made in the automatic control of dosing<
gold extraction process of gold beneficiation
gold extraction by mixed mercury method
mixed mercury method is an ancient gold extraction process, which is simple, economical and suitable for the recovery of coarse-grained monomer gold. This method is still used in many gold mines in China. With the development of gold proction and the progress of science and technology, the process of extracting gold by mixed mercury method has been improved and perfected. Due to the increasingly stringent requirements of environmental protection, some mines have cancelled the mercury mixing operation and replaced it by gravity separation, flotation and cyanidation
in the proction of gold, the process of extracting gold by mixed mercury method still plays an important role, and has been applied at home and abroad. At present, this technology has been applied in many gold mines, such as Zhangjiakou, Hebei, Ergou, Liaoning, Jiapigou, Jilin and Yinan, Shandong. Liaoning Ergou gold mine was originally a single flotation process. According to the nature of ore, it was changed into a combined process of mixed mercury and flotation. The total recovery was increased by 78.1% (the recovery of mixed mercury was 64.6%), the grade of tailings was reced from 0.74g/t to 0.32g/t, and the annual benefit was 1.58 million yuan. The key to the process of gold extraction by mixed mercury method is how to take protective measures to eliminate mercury pollution<
cyanidation gold extraction process
cyanidation gold extraction process is the main method to extract gold from ore or concentrate. The process of gold extraction by cyanidation includes: cyanidation leaching, washing and filtration of leaching pulp, extraction of gold from cyanidation solution or cyanidation pulp and smelting of finished procts. There are two kinds of gold extraction processes in the existing cyanidation plants of gold mines in China. One is the so-called conventional cyanidation process (CCD method and CCF method) in which the thickener is used for continuous countercurrent washing and zinc powder is used to replace the precipitation to recover gold. The other is that there is no need for filtration and washing, CIP process and CIL process were used to recover gold from cyanide pulp directly by activated carbon adsorption< The conventional cyanidation process can be divided into two types according to the different materials: one is the cyanidation plant which processes flotation gold concentrate or mixed mercury and gravity tailings. Most of them are large state-owned mines. For example, Jinchangyu in Hebei Province; Wulong, Liaoning, Yangzhaiyu, Henan; Zhaoyuan, Xincheng, Jiaojia and Sanshan gold mines in Shandong Province. The other is a gold extraction plant which processes argillaceous oxide ore and uses whole slime stirring cyanidation. Such as Jilin trench; Tuanjiegou, Heilongjiang Province; Xinqiao gold and silver mine in Anhui Province. As early as 1930s, cyanidation process has been used in China. During 1936-1938, Jinguashi gold mine in Taiwan used cyanidation zinc powder replacement process to extract gold with an annual output of 150000 taels. After entering the 1960s, in order to adapt to the development of national economy and vigorously develop the proction of mineral gold, the intermittent mechanical agitation cyanidation process and continuous agitation cyanidation process were successively adopted in some mines to replace the percolation cyanidation process. In 1967, the continuous mechanical agitation cyanidation process was first realized in Lingshan and Linglong gold concentrators of Zhaoyuan gold mine, Shandong Province. The cyanidation rate increased from 70% to 93.23%. Since then, the continuous mechanical agitation cyanidation process has been rapidly promoted in major gold mines in China
in recent years, new progress has been made in the scientific research of new processes such as thiourea extraction, thiosulfate extraction, preoxidation bacterial leaching, pressure catalytic leaching and resin adsorption. In 1979, Changchun Gold Research Institute successfully carried out the test of thiourea gold extraction. In 1984, a thiourea gold extraction workshop was built in Longshui mine, Guangxi, with a daily processing capacity of 10-20t of flotation gold concentrate. Although other processes are in the stage of experimental research and are preparing to be put into operation, it is enough to show that the gold extraction technology in China has developed to a new level< In China's gold resources, low-grade oxidized ores account for a certain proportion, so it is not economical to use the conventional cyanidation process to extract gold from such ores, but the heap leaching process still has economic benefits. At the end of 1970s, China began to study the heap leaching process of low-grade gold bearing oxide ore. after the successful small-scale proction of Hushan gold mine in Dandong, Liaoning Province, it was successively applied in some mines in Linghu, Yindongpo, Mojiang, Chongli, Hebei, Chifeng, Inner Mongolia and other areas, with satisfactory economic results, It opens up a way for the development and utilization of low grade gold bearing oxide ore. The heap leaching process has developed rapidly because of its simple process, easy operation, low investment, good benefit and fast start-up. The application of granulation technology and activated carbon adsorption column, as well as the development of gold loaded carbon desorption electrodeposition process, have added new vitality to the popularization and application of heap leaching gold extraction process<
gold smelting and recovery
gold smelting is the last process in gold proction, and its proct is finished gold. Smelting can be divided into roughing and refining. The refined and rough procts are alloy (commonly known as quality gold). Most of the local gold in China's gold mines is quality gold, which is sold directly to banks. Gold rich ore blocks and various gold concentrates are transported to non-ferrous smelters for processing and refining of finished gold (commonly known as gold content). Over the past 40 years since the founding of the people's Republic of China, gold smelting and comprehensive recovery have developed rapidly, the level of smelting technology and equipment has been continuously improved, and the smelting cost has been decreasing, which has promoted the development of gold proction< Before the 1970s, gold proction was in the initial stage of development. Except for a few mines which began to use cyanidation process, the local gold was mainly smelted from natural gold and concentrate from placer gravity separation and mercury paste from mixed mercury process, Local gold accounts for only 30% of the total output, and 70% of the gold is recovered by nonferrous smelters< Since 1970, gold proction has been developing graally, cyanidation technology has been widely used, and the amount of local gold in mines has been increasing. In 1985, the output of finished gold in mines accounted for 70% of the national gold output, and most of the concentrate procts proced by concentrators were proced by cyanidation
the traditional crucible method is mostly used for in-situ smelting in mines. Due to the different proction process and material properties, the gold content of the resultant gold is also different. Because the gold content is not high or the silver content is not priced, some mines adopt the chemical method to remove impurities, remelting or electrolysis method to separate and refine gold and silver in order to improve the quality and economic benefits
recovery of associated gold in nonferrous smelters
in gold proction, the recovery of associated gold from polymetallic ore occupies a considerable position. Gold, copper, lead and other non-ferrous metals are selected into the concentrate. In copper and lead smelting, gold and silver are recovered. In order to increase gold proction, some non-ferrous smelters in China have built comprehensive precious metal recovery workshops. By 1985, there were more than 20 smelters in China. In addition to Shenyang smelter, Zhuzhou Smelter, Shanghai smelter, Yunnan Smelter, Chongqing smelter, Wuhan smelter, Fuchunjiang smelter, Tianjin smelter, Taiyuan smelter, etc. Among them, the output of associated gold in the three major smelters of Shenyang smelter, Shangye smelter and Zhuzhou Smelter accounts for more than 90% of the total output of associated gold in China, which is an important force in China's gold proction. The recovery of associated gold in these enterprises is based on the fact that in the process of copper and lead smelting, gold and silver are enriched in the crude copper and lead. During the electrolytic refining of crude copper and lead, gold and silver are deposited in the electrolytic anode slime. Therefore, extracting gold and silver from the anode slime is the main way to recover associated gold and silver.
2. The content of gold in the ore is very low. In order to extract gold, it is necessary to crush and grind the ore and preconcentrate or separate gold from the ore by mineral processing. Gravity separation and flotation are widely used in gold beneficiation. Gravity separation plays a very important role in placer gold proction. Flotation is widely used in rock gold mines. At present, about 80% of rock gold mines in China adopt this method for gold beneficiation. The level of beneficiation technology and equipment has been greatly improved< (1) crushing and grinding
according to the investigation, jaw crushers are mostly used in China's gold concentrators for coarse crushing, standard cone crushers for medium crushing, and short head cone crushers and counter roller crushers for fine crushing. Medium and small gold concentrators mostly adopt two-stage one closed circuit crushing process, while large gold concentrators adopt three-stage one closed circuit crushing process< (2) gravity separation
gravity separation is widely used in rock gold mines. It is mostly used as an auxiliary process to recover coarse gold in grinding circuit, which creates favorable conditions for flotation and cyanidation process, improves beneficiation indexes, improves the total recovery of gold, and plays a positive role in increasing output and recing cost< (3) flotation
according to the survey, about 80% of China's rock gold mines adopt flotation method for gold separation, and the concentrate proced is mostly sent to non-ferrous smelters for treatment. Due to the increasing development of cyanidation and in order to improve the economic benefit and rece the loss of concentrate transportation, the proct structure has changed greatly in recent years. Most of them adopt on-site treatment (of course, because of the contradiction between beneficiation and metallurgy and pricing problems, the mine is forced to treat on-site), which promotes the great development of flotation technology and occupies an important position in gold proction. There are usually two kinds of flotation processes: preferential flotation and mixed flotation. In recent years, new progress has been made in technological process improvement and reagent addition system, and flotation recovery has been improved significantly
in recent years, in order to improve the separation effect, many improvements and researches have been made on the reagent addition system and mixed medication, and new progress has been made in the automatic control of dosing. Welcome to our factory for consultation.
according to the investigation, jaw crushers are mostly used in China's gold concentrators for coarse crushing, standard cone crushers for medium crushing, and short head cone crushers and counter roller crushers for fine crushing. Medium and small gold concentrators mostly adopt two-stage one closed circuit crushing process, while large gold concentrators adopt three-stage one closed circuit crushing process< (2) gravity separation
gravity separation is widely used in rock gold mines. It is mostly used as an auxiliary process to recover coarse gold in grinding circuit, which creates favorable conditions for flotation and cyanidation process, improves beneficiation indexes, improves the total recovery of gold, and plays a positive role in increasing output and recing cost< (3) flotation
according to the survey, about 80% of China's rock gold mines adopt flotation method for gold separation, and the concentrate proced is mostly sent to non-ferrous smelters for treatment. Due to the increasing development of cyanidation and in order to improve the economic benefit and rece the loss of concentrate transportation, the proct structure has changed greatly in recent years. Most of them adopt on-site treatment (of course, because of the contradiction between beneficiation and metallurgy and pricing problems, the mine is forced to treat on-site), which promotes the great development of flotation technology and occupies an important position in gold proction. There are usually two kinds of flotation processes: preferential flotation and mixed flotation. In recent years, new progress has been made in technological process improvement and reagent addition system, and flotation recovery has been improved significantly
in recent years, in order to improve the separation effect, many improvements and researches have been made on the reagent addition system and mixed medication, and new progress has been made in the automatic control of dosing. Welcome to our factory for consultation.
3. The content of gold in sand gold mine is very low. How to extract sand gold from river sand efficiently? Gravity separation is the most common method to extract gold from placer gold mine. Gravity separation is also the most effective and the lowest cost method for gold panning. The general placer gold ore is screened by roller screen, the coarse sand is discarded, and the fine sand enters the chute or jigger for roughing. The coarse concentrate can be further enriched by shaking table or centrifugal gold concentrator, and finally gold is extracted from the gold concentrate by the method of mixed mercury extraction. This process is called sand panning.
4. First stage crushing, (breaking large ore) second stage crushing, (fine crushing the ore after the first stage crushing) the ore is finely ground by the feeder (mainly uniform feeding and holding ore intake) and then by the ball mill. The ground ore is fed into the classifier (the extra fine water in the classifier is flushed to the next process, and the non finely ground ore is returned to the ball mill. Note: before entering the classifier, the ore should be absorbed by silver plate, Silver plate is iron plate or copper plate coated with mercury after silver plating. It is the first time to extract gold, which is called mercury gold. It's also called sponge gold. It can be sold directly.) Fine ore into the stirred tank (this is the first process of flotation, in which the coarse flotation agent) and then into the flotation machine (flotation machine has many cells, add flotation agent for roughing, scavenging, cleaning) selected is fine powder, (can be sold directly) discharge is tail sand. The tailing sand is discharged to the tailing pond by sand pump
I speak to you in the most straightforward language. I hope it will help you a little.
I speak to you in the most straightforward language. I hope it will help you a little.
5. There are many kinds of beneficiation methods for gold ores. Flotation is the main beneficiation method for rock gold ores. However, no matter flotation or cyanidation is used for coarse-grained crystalline rock gold ores, good beneficiation effect can not be obtained. The coarse-grained gold ores must be recovered as early as possible in the beneficiation process, and flotation or cyanidation can be used for fine-grained gold ores, A complete set of gold separation process is designed and the whole set of gold separation equipment is designed and manufactured. Here is a brief introction of the coarse gold separation process and equipment. Due to the large specific gravity difference between gold and gangue, the gravity separation method is used to treat the gold ore ground to basic monomer separation, which can obtain good separation effect, In this process, the jig is used to recover the coarse gold in the rock gold, and the mercury mixing cylinder is used to forcibly mix the mercury to collect the gold particles. After pressure filtration and distillation, the gold with high purity can be obtained, and mercury can be recovered. The following is the schematic diagram of the gold separation process: the equipment used in this process mainly includes: coarse jaw crusher, Jaw crusher, rod mill, sawtooth wave jig, mercury mixer, etc
6. Due to the increasing development of cyanidation and the great changes in proct structure of enterprises in order to improve economic benefits and rece the loss of concentrate transportation, more on-site treatment is adopted (of course, e to the contradiction between beneficiation and metallurgy and pricing problems, the mine is forced to treat on-site), which promotes the great development of flotation technology and occupies an important position in gold separation proction. 98 kinds of gold minerals and gold bearing minerals have been found, of which only 47 are common and only 10 are directly used in instry. There are nearly 38 kinds of gold bearing materials in China, and the gold content of gold ore is generally less.
gravity separation and flotation are commonly used mineral processing methods in gold mines. Most gold mines in China adopt the above methods to extract gold, and the mineral processing technology and equipment have been greatly improved
according to the structural state and gold content of gold in minerals, gold minerals can be divided into three categories: gold minerals, gold bearing minerals and gold bearing minerals. The so-called independent mineral of gold refers to the gold proced in the form of gold minerals and gold bearing minerals. It is the most important occurrence form of gold in nature and the main object of instrial development and utilization
the mainstream gold separation process is usually broken by crusher, then crushed by ball mill, then extracted concentrate and tailings by gravity separation and flotation process, and finally smelted by chemical method, finally the proct becomes finished gold.
gravity separation and flotation are commonly used mineral processing methods in gold mines. Most gold mines in China adopt the above methods to extract gold, and the mineral processing technology and equipment have been greatly improved
according to the structural state and gold content of gold in minerals, gold minerals can be divided into three categories: gold minerals, gold bearing minerals and gold bearing minerals. The so-called independent mineral of gold refers to the gold proced in the form of gold minerals and gold bearing minerals. It is the most important occurrence form of gold in nature and the main object of instrial development and utilization
the mainstream gold separation process is usually broken by crusher, then crushed by ball mill, then extracted concentrate and tailings by gravity separation and flotation process, and finally smelted by chemical method, finally the proct becomes finished gold.
7. mining and beneficiation of gold deposits:
the types of gold deposits to be mined are mainly divided into two types: one is vein gold deposits, which are mostly distributed in high mountain areas and formed by internal geological processes (mainly volcanism, magmatism and metamorphism). Vein gold deposits are also called mountain gold deposits and endogenetic gold deposits
another type is placer gold deposit. After exposed to the ground for a long period of time, the placer gold deposit is broken into gold grains, gold flakes and gold st, which are transported by wind and flowing water and gathered under the separation of flowing water, and deposited on the riverside, lakeside and coast to form alluvial, proluvial or coastal placer gold deposits. After weathering and denudation, the detrital procts of some gold deposits accumulate in situ and form resial placer gold deposits
if it accumulates along the slope, it will form a slope type placer gold deposit. Placer gold deposits, also known as exogenic gold deposits, can be formed in Paleozoic, Mesozoic, tertiary, quaternary or modern times. In addition, there is an associated gold ore with low gold content, which is often recovered and comprehensively utilized in the process of non-ferrous metal mining<
gold ore beneficiation process
gold ore resources are rare, and beneficiation is very difficult. At present, 98 gold minerals and gold bearing minerals have been found in the world, of which only 47 are common, while only 10 minerals can be directly used in instry
at present, 38 kinds of gold bearing materials have been found in China, and gold deposits are more rare. At present, gravity separation and flotation are the most widely used mineral processing methods in China. With the progress of mineral processing technology, the mineral processing equipment has been greatly improved
according to the structural state and gold content of gold in minerals, gold minerals can be divided into three categories: gold minerals, gold bearing minerals and gold bearing minerals. The so-called independent mineral of gold refers to the gold proced in the form of gold minerals and gold bearing minerals. It is the most important occurrence form of gold in nature and the main object of instrial development and utilization
at present, the mainstream gold separation process is generally broken by crusher, finely ground by ball mill, and then extracted concentrate and tailings by gravity separation and flotation, and finally smelted by chemical method, and finally the proct becomes finished gold
the gold ore dressing process can be understood as
the raw ore enters the double-layer vibrating screen after the first stage crushing, the upper procts are crushed together with the middle procts after the second stage crushing, and the second stage crushing procts are returned to merge, and the first stage crushing procts are screened again
the final proct after screening is grinded by the first stage ball mill and forms a closed-circuit grinding with the grading mechanism. The grading overflow enters the second stage ball mill for regrinding after being graded by the hydrocyclone, and then forms a closed-circuit grinding with the hydrocyclone
swirler overflow first floatation priority, foam procts are selected two times and three times selected finally become concentrate procts. After tailings flotation, the tailings after preferential flotation are selected by one rough dressing, one time selection, two selection, three selection and one sweep process. Secondary cleaning and primary cleaning constitute closed circuit separation, while three cleaning and secondary cleaning constitute closed circuit separation< Gravity beneficiation is a method of separating ore according to mineral density difference, which plays an important role in modern beneficiation methods. The main equipment used are chute, shaker, jig and short cone cyclone<
flotation of gold ore dressing equipment
80% of gold concentrators in China adopt flotation method for gold separation, and the concentrate proced is mostly sent to non-ferrous smelters for treatment. Due to the increasing development of cyanidation and in order to improve the economic benefit and rece the loss of concentrate transportation, the proct structure has changed greatly in recent years. Most of them adopt on-site treatment (of course, because of the contradiction between beneficiation and metallurgy and pricing problems, the mine is forced to treat on-site), which promotes the great development of flotation technology and plays an important role in the proction of gold separation<
chemical beneficiation of gold ore
at present, the chemical beneficiation mainly includes the process of extracting gold by mixed mercury and cyanidation. The mixed mercury process is an old gold extraction process, which is simple, economical and suitable for the recovery of coarse-grained monomer gold. However, it has great pollution to the environment and is graally replaced by gravity separation, flotation and cyanidation
the process of gold extraction by cyanidation includes: cyanidation leaching, washing and filtration of leaching pulp, extraction of gold from cyanidation solution or cyanidation pulp and smelting of finished procts<
smelting of gold ore dressing equipment
smelting is the last process of extracting gold, and smelting can be divided into roughing and refining. Gold smelting is developing rapidly in China. Most of the gold is smelted by traditional crucible method to proce qualified gold, or sent to non-ferrous metal smelters to process and refine finished gold< In China's gold resources, low-grade oxidized ores account for a certain proportion. It is not economical to use conventional cyanidation process to extract gold from such ores, but heap leaching process is still economical. Heap leaching is also one of the ways to increase China's gold proction at present, and the country also attaches great importance to it. www.xuankuangshebei1.cn
the types of gold deposits to be mined are mainly divided into two types: one is vein gold deposits, which are mostly distributed in high mountain areas and formed by internal geological processes (mainly volcanism, magmatism and metamorphism). Vein gold deposits are also called mountain gold deposits and endogenetic gold deposits
another type is placer gold deposit. After exposed to the ground for a long period of time, the placer gold deposit is broken into gold grains, gold flakes and gold st, which are transported by wind and flowing water and gathered under the separation of flowing water, and deposited on the riverside, lakeside and coast to form alluvial, proluvial or coastal placer gold deposits. After weathering and denudation, the detrital procts of some gold deposits accumulate in situ and form resial placer gold deposits
if it accumulates along the slope, it will form a slope type placer gold deposit. Placer gold deposits, also known as exogenic gold deposits, can be formed in Paleozoic, Mesozoic, tertiary, quaternary or modern times. In addition, there is an associated gold ore with low gold content, which is often recovered and comprehensively utilized in the process of non-ferrous metal mining<
gold ore beneficiation process
gold ore resources are rare, and beneficiation is very difficult. At present, 98 gold minerals and gold bearing minerals have been found in the world, of which only 47 are common, while only 10 minerals can be directly used in instry
at present, 38 kinds of gold bearing materials have been found in China, and gold deposits are more rare. At present, gravity separation and flotation are the most widely used mineral processing methods in China. With the progress of mineral processing technology, the mineral processing equipment has been greatly improved
according to the structural state and gold content of gold in minerals, gold minerals can be divided into three categories: gold minerals, gold bearing minerals and gold bearing minerals. The so-called independent mineral of gold refers to the gold proced in the form of gold minerals and gold bearing minerals. It is the most important occurrence form of gold in nature and the main object of instrial development and utilization
at present, the mainstream gold separation process is generally broken by crusher, finely ground by ball mill, and then extracted concentrate and tailings by gravity separation and flotation, and finally smelted by chemical method, and finally the proct becomes finished gold
the gold ore dressing process can be understood as
the raw ore enters the double-layer vibrating screen after the first stage crushing, the upper procts are crushed together with the middle procts after the second stage crushing, and the second stage crushing procts are returned to merge, and the first stage crushing procts are screened again
the final proct after screening is grinded by the first stage ball mill and forms a closed-circuit grinding with the grading mechanism. The grading overflow enters the second stage ball mill for regrinding after being graded by the hydrocyclone, and then forms a closed-circuit grinding with the hydrocyclone
swirler overflow first floatation priority, foam procts are selected two times and three times selected finally become concentrate procts. After tailings flotation, the tailings after preferential flotation are selected by one rough dressing, one time selection, two selection, three selection and one sweep process. Secondary cleaning and primary cleaning constitute closed circuit separation, while three cleaning and secondary cleaning constitute closed circuit separation< Gravity beneficiation is a method of separating ore according to mineral density difference, which plays an important role in modern beneficiation methods. The main equipment used are chute, shaker, jig and short cone cyclone<
flotation of gold ore dressing equipment
80% of gold concentrators in China adopt flotation method for gold separation, and the concentrate proced is mostly sent to non-ferrous smelters for treatment. Due to the increasing development of cyanidation and in order to improve the economic benefit and rece the loss of concentrate transportation, the proct structure has changed greatly in recent years. Most of them adopt on-site treatment (of course, because of the contradiction between beneficiation and metallurgy and pricing problems, the mine is forced to treat on-site), which promotes the great development of flotation technology and plays an important role in the proction of gold separation<
chemical beneficiation of gold ore
at present, the chemical beneficiation mainly includes the process of extracting gold by mixed mercury and cyanidation. The mixed mercury process is an old gold extraction process, which is simple, economical and suitable for the recovery of coarse-grained monomer gold. However, it has great pollution to the environment and is graally replaced by gravity separation, flotation and cyanidation
the process of gold extraction by cyanidation includes: cyanidation leaching, washing and filtration of leaching pulp, extraction of gold from cyanidation solution or cyanidation pulp and smelting of finished procts<
smelting of gold ore dressing equipment
smelting is the last process of extracting gold, and smelting can be divided into roughing and refining. Gold smelting is developing rapidly in China. Most of the gold is smelted by traditional crucible method to proce qualified gold, or sent to non-ferrous metal smelters to process and refine finished gold< In China's gold resources, low-grade oxidized ores account for a certain proportion. It is not economical to use conventional cyanidation process to extract gold from such ores, but heap leaching process is still economical. Heap leaching is also one of the ways to increase China's gold proction at present, and the country also attaches great importance to it. www.xuankuangshebei1.cn
8. CIP proction line of gold mine is a process flow of unfiltered cyanidation carbon slurry, which uses activated carbon to directly adsorb and recover gold from cyanidation pulp. It includes seven operation stages: preparation of leaching pulp, cyanidation leaching, adsorption of activated carbon, desorption of gold loaded carbon, obtaining gold slime by electric shock, recycling of de gold carbon and treatment of leaching pulp
[application field]
CIP proction line of gold mine is mainly applicable to two kinds of ores: one is flotation gold concentrate or mixed mercury, gravity tailings, the other is argillaceous oxide ore.
[application field]
CIP proction line of gold mine is mainly applicable to two kinds of ores: one is flotation gold concentrate or mixed mercury, gravity tailings, the other is argillaceous oxide ore.
9.
If you want to buy gold mining equipment, come to Weifang Jinmeng placer gold mining machinery Co., Ltd. Here, we specialize in making all kinds of gold mine equipment, with a complete set of gold mine equipment proction line
according to the form of gold, gold equipment can be divided into two categories, one is sand gold equipment, which takes advantage of the difference in the specific gravity of heavy minerals, takes water as the medium, and washes the mineral materials under the strong washing effect of high-pressure water, so as to realize the separation of light and heavy minerals and recover the gold bearing heavy minerals. The other is the rock gold equipment. The gold in this kind of gold is wrapped in the stone. It needs to go through crushing, ball milling and other processes to separate the gold from the stone to make the gold become monomer gold, and then the gold is extracted by gravity separation or hydrogenation, flotation process. For details, please call Weifang Jinmeng placer gold mining machinery Co., Ltd
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