Elasticity is conservative
Publish: 2021-05-11 02:52:11
1. This is not clear. You need to go to the person in charge
2. Regular company, I went to the summer vacation, summer work, arranged a western restaurant waiter work, went to find the little brother surnamed long arrangement, I think it's very good. But I only did 20 days, temporary things left, took 1900 wages
3.
City: Ningbo
property name: Ningbo headquarters No.1
bus line: Ningbo Taizhou Wenzhou expressway, Hangzhou Ningbo Expressway and ring expressway are surrounded by three lines, connecting the main urban area of Ningbo in the north, about 12 km away from the eastern new town and about 12 km away from the airport
other modes of transportation: Ningbo Taizhou Wenzhou expressway, Hangzhou Ningbo Expressway and ring expressway are surrounded by three lines, connecting the main urban area of Ningbo in the north, about 12 km away from the eastern new town and about 12 km away from the airport
(the information is for reference only, and the information of the sales office shall prevail.)
Sohu focus provides you with real estate information, real estate details, purchase process, owners' forum, home decoration and other comprehensive information
4.
Real estate name: No.1 Runjiang, Shijiazhuang City: Shijiazhuang bus line: No.99, No.537, Ruisheng Pharmaceutical Co., Ltd. get off and walk for 200 meters, No.28, Development Zone Management Committee get off and walk for 500 meters
rail transit: Subway Line 1 Liucun station and torch square station walk for 8 minutes
(the information is for reference only, and the final information is subject to the information of the sales office.)
when you buy a new house, go to Sohu Focus
5.
Methods of extracting gold from gold ore:
1. Roasting of gold concentrate:
(1) the gold in most refractory ores is closely associated with sulfide, and the gold bearing sulfide can be fully and effectively enriched by flotation method to proce gold concentrate with high flotation recovery
(2) e to the complex composition of flotation gold concentrate and the high content of beneficial and harmful elements, the leaching rate of gold is low by direct cyanide leaching. Therefore, roasting oxidation pretreatment of this type of refractory gold concentrate is one of the effective methods to improve the gold leaching rate Hot press oxidation process:(1) hot press oxidation process is divided into acidic hot press oxidation and alkaline hot press oxidation. Alkaline hot press oxidation is suitable for refractory gold ore with high carbonate content, while acidic hot press oxidation is suitable for refractory gold concentrate containing sulfur and arsenic
(2) hot press oxidation is the oxidation and decomposition of pyrite and arsenopyrite under a certain temperature and pressure, so no matter how small the gold particles are, they will be dissociated, making the gold leaching rate higher
3. Combined pretreatment process:(1) for the typical refractory gold concentrate with complex composition, various interference elements and high content, it is difficult to obtain the best effect by using a single pretreatment process
(2) for example, when the concentrate contains antimony and organic carbon, if the roasting method is used for carbon removal, antimonate and antimony alloy will be formed in the roasting process e to the low volatilization temperature of antimony, which will form a secondary inclusion of gold and seriously hinder the leaching of gold, However, the structure of organic carbon can not be destroyed, and its "robbing gold" property can not be eliminated, so the leaching index of gold will also be greatly affected 
morphology and characteristics of gold:
1. Gold is crystal at room temperature, equiaxed crystal system, cubic face centered crystal lattice, natural good crystal form, rare, often irregular granular, lumpy, flake, network, dendritic, fibrous and spongy aggregates. Pure gold is golden yellow, and its color can change accordingly when it contains impurities
With the increase of silver content, the reflectivity increases, the hardness of gold increases and the density decreases. The volatility of gold is very poor. It is almost nonvolatile when the melting point is above 1300 ℃, but it increases greatly in gas and co atmospherethe above contents refer to: network gold ore
6. Gold smelting procts are 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 that 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. The local gold only accounted for 30% of the total output, 70% of 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 day by day. 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 cyanidated and smelted in situ to proce finished gold
the traditional crucible method is mostly used for in-situ smelting in mines. Due to the different proction processes and the nature of the materials to be processed, the gold content of the resultant gold is also different. Due to the low gold content or the non pricing of silver content, some mines adopt chemical method for impurity removal and remelting or electrolytic method for gold and silver separation and refining in order to improve the quality and economic benefits. In 1984, Jiaojia gold mine used a new hydrometallurgical process to remove base metals from cyanide gold slime by electrochlorination (extracting gold by aqueous solution chlorination and silver by ammonia leaching) to obtain finished gold with 99.9% gold grade and silver ingot with 99.9% silver grade. Copper and lead in gold slime are also recovered at the same time (wet treatment of gold slime has a tendency to be popularized). Zhaoyuan gold mine has successfully developed a Φ one point five × The 1.8m converter is used to smelt the gold mud instead of the crucible, which reces the cost and improves the working conditions. This method has been widely used in Xincheng Gold Mine and other mines in Shandong Province with good results
Zhaoyuan smelter is the first gold smelter researched, designed and constructed in China. It is a new type of enterprise integrating comprehensive smelting and chemical instry, specializing in the treatment of polymetallic sulfide gold concentrate, mainly extracting gold and recovering silver, copper, lead and sulfur. The completion and operation of Zhaoyuan smelter has filled a technical gap for China's gold proction and smelting process. The combined process of roasting acid leaching - (salt leaching) - cyanidation leaching has solved the long-term proction contradiction among mining, beneficiation and metallurgy, and solved the problems of long-distance transportation loss of gold concentrate (annual loss rate of 2% - 3%), high transportation pressure and comprehensive utilization
the design of the proction process of the plant absorbs the advanced experience at home and abroad, adopts the vacuum belt filter as the washing and filtering equipment of the leaching resie, and adopts the axial-flow cyanidation leaching tank for three times of leaching, three times of solid-liquid separation and washing of the leaching resie< The recovery of associated gold in nonferrous smelters plays an important role in gold proction. 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
the treatment process of copper anode slime has developed rapidly. Through continuous reform and innovation, the traditional pyrometallurgical proction process has become more mature and perfect. The semi wet combined process and the whole wet process have been successfully tested and put into proction, which greatly improves the level of smelting technology and equipment in China. Such as the improvement of copper removal process, the comprehensive recovery of valuable elements, the improvement of furnace body and the improvement of st collection system, etc. In addition, the transformation of electrolytic cell and the popularization and application of intermediate frequency furnace make the pyrometallurgical process graally mature and perfect, and improve the technical and economic indicators. The pyrometallurgical process has the advantages of stable technical conditions, mature process, high degree of comprehensive utilization, strong adaptability to raw materials, large processing capacity and low cost, so it is still widely used in smelters such as Shenyang smelter, Zhuzhou Smelter and Shangye smelter. Fuchunjiang smelter, Wuhan smelter and Chongqing smelter have successively adopted the whole wet process, which has achieved remarkable results. Yunnan Smelter and Tianjin electrolytic copper plant have successfully adopted the combined process of beneficiation and metallurgy and put into operation, which has also achieved remarkable economic benefits. The successful test and application of the technology of extracting gold from sulfuric acid cinder create a new way for gold proction and full utilization of resources in China.
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 day by day. 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 cyanidated and smelted in situ to proce finished gold
the traditional crucible method is mostly used for in-situ smelting in mines. Due to the different proction processes and the nature of the materials to be processed, the gold content of the resultant gold is also different. Due to the low gold content or the non pricing of silver content, some mines adopt chemical method for impurity removal and remelting or electrolytic method for gold and silver separation and refining in order to improve the quality and economic benefits. In 1984, Jiaojia gold mine used a new hydrometallurgical process to remove base metals from cyanide gold slime by electrochlorination (extracting gold by aqueous solution chlorination and silver by ammonia leaching) to obtain finished gold with 99.9% gold grade and silver ingot with 99.9% silver grade. Copper and lead in gold slime are also recovered at the same time (wet treatment of gold slime has a tendency to be popularized). Zhaoyuan gold mine has successfully developed a Φ one point five × The 1.8m converter is used to smelt the gold mud instead of the crucible, which reces the cost and improves the working conditions. This method has been widely used in Xincheng Gold Mine and other mines in Shandong Province with good results
Zhaoyuan smelter is the first gold smelter researched, designed and constructed in China. It is a new type of enterprise integrating comprehensive smelting and chemical instry, specializing in the treatment of polymetallic sulfide gold concentrate, mainly extracting gold and recovering silver, copper, lead and sulfur. The completion and operation of Zhaoyuan smelter has filled a technical gap for China's gold proction and smelting process. The combined process of roasting acid leaching - (salt leaching) - cyanidation leaching has solved the long-term proction contradiction among mining, beneficiation and metallurgy, and solved the problems of long-distance transportation loss of gold concentrate (annual loss rate of 2% - 3%), high transportation pressure and comprehensive utilization
the design of the proction process of the plant absorbs the advanced experience at home and abroad, adopts the vacuum belt filter as the washing and filtering equipment of the leaching resie, and adopts the axial-flow cyanidation leaching tank for three times of leaching, three times of solid-liquid separation and washing of the leaching resie< The recovery of associated gold in nonferrous smelters plays an important role in gold proction. 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
the treatment process of copper anode slime has developed rapidly. Through continuous reform and innovation, the traditional pyrometallurgical proction process has become more mature and perfect. The semi wet combined process and the whole wet process have been successfully tested and put into proction, which greatly improves the level of smelting technology and equipment in China. Such as the improvement of copper removal process, the comprehensive recovery of valuable elements, the improvement of furnace body and the improvement of st collection system, etc. In addition, the transformation of electrolytic cell and the popularization and application of intermediate frequency furnace make the pyrometallurgical process graally mature and perfect, and improve the technical and economic indicators. The pyrometallurgical process has the advantages of stable technical conditions, mature process, high degree of comprehensive utilization, strong adaptability to raw materials, large processing capacity and low cost, so it is still widely used in smelters such as Shenyang smelter, Zhuzhou Smelter and Shangye smelter. Fuchunjiang smelter, Wuhan smelter and Chongqing smelter have successively adopted the whole wet process, which has achieved remarkable results. Yunnan Smelter and Tianjin electrolytic copper plant have successfully adopted the combined process of beneficiation and metallurgy and put into operation, which has also achieved remarkable economic benefits. The successful test and application of the technology of extracting gold from sulfuric acid cinder create a new way for gold proction and full utilization of resources in China.
7. In fact, it is difficult to extract gold. Generally, it can only be done by factories. If you are an indivial, I would advise you not to do it, because extracting gold requires more equipment and some chemicals. Generally speaking, the gold content of a rock like gold mine is about 4G per ton of ore. that is to say, even a large gold refinery can only extract about 4G of gold from each ton of gold ore. however, you only have 50kg of ore, that is, 25kg of ore, You can only extract about 0.1g of gold at most. How much is 0.1g of gold, and your refining technology can not reach the level of large refineries
that is to say, you can't extract gold from it. So I still advise you not to do so
other people's refining process is to crush the ore first, then screen it to get the gold ore with high gold content, and then extract the gold by cyanidation method. Moreover, there are some filtering processes, which are very complicated. Otherwise, the proction cost of gold will not reach about 80 yuan per gram in China
that is to say, you can't extract gold from it. So I still advise you not to do so
other people's refining process is to crush the ore first, then screen it to get the gold ore with high gold content, and then extract the gold by cyanidation method. Moreover, there are some filtering processes, which are very complicated. Otherwise, the proction cost of gold will not reach about 80 yuan per gram in China
8. 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
(2) gravity separation is widely used in rock gold mines. It is mostly used as an auxiliary process to recover coarse gold in the grinding circuit, which creates favorable conditions for flotation and cyanidation process, improves the beneficiation index, improves the total recovery rate of gold, and plays a positive role in increasing output and recing cost< According to the investigation, 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< (4) chemical separation hydrometallurgical gold extraction process 1. The mixed mercury process 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.
(2) gravity separation is widely used in rock gold mines. It is mostly used as an auxiliary process to recover coarse gold in the grinding circuit, which creates favorable conditions for flotation and cyanidation process, improves the beneficiation index, improves the total recovery rate of gold, and plays a positive role in increasing output and recing cost< According to the investigation, 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< (4) chemical separation hydrometallurgical gold extraction process 1. The mixed mercury process 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.
9. To collect, we have not received the relevant documents as you said ～
the transfer fee of mining right, that is, the price is different ～ not the same thing ～
the transfer fee of mining right, that is, the price is different ～ not the same thing ～
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