Rare earth ore washing tank
Publish: 2021-04-22 12:02:28
1. The main technological process of rare earth extraction is as follows: topsoil stripping → excavation of ore bearing body, ore transportation → leaching pool → using electrolyte solution prepared according to a certain proportion (concentration requirement) as & quot; Eluent & quot; Or & quot; Leaching agent;, The solution is added to the leaching tank, and the concentration of & quot; Ionic phase & quot; Rare earth ore is analyzed by & quot; Percolation elution & quot; Or & quot; Leaching & quot; In the solution, the active ions exchange with rare earth ions; Ionic phase & quot; Rare earth is exchanged from the ore bearing carrier minerals and becomes a new state of rare earth; Add & quot; Top water;, The mother liquor containing rare earth was obtained; The mother liquor flows into the collecting tank or mother liquor tank through the pipeline or infusion ditch, and then enters the sedimentation tank; After leaching, the waste resie is removed from the leaching tank and discharged in different places → precipitant and impurity remover are added to the sedimentation tank to remove and precipitate the rare earth from the mother liquor and obtain mixed rare earth; After treatment, the supernatant was returned to the leaching tank for & quot; Eluent & quot; The purity of mixed rare earth oxide is more than 92%.
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The main technological process of rare earth extraction is as follows: topsoil stripping → excavation of ore bearing body, ore transportation → leaching pool → using electrolyte solution prepared according to a certain proportion (concentration requirement) as & quot; Eluent & quot; Or & quot; Leaching agent;, The solution is added to the leaching tank, and the concentration of & quot; Ionic phase & quot; Rare earth ore is analyzed by & quot; Percolation elution & quot; Or & quot; Leaching & quot; In the solution, the active ions exchange with rare earth ions; Ionic phase & quot; Rare earth is exchanged from the ore bearing carrier minerals and becomes a new state of rare earth
Add & quot; Top water;, The mother liquor containing rare earth was obtained; The mother liquor flows into the collecting tank or mother liquor tank through the pipeline or infusion ditch, and then enters the sedimentation tank; After leaching, the waste resie is removed from the leaching tank and discharged in other places → precipitant and impurity remover are added to the sedimentation tank to remove and precipitate the rare earth in the mother liquor and obtain mixed rare earth
After treatment, the supernatant was returned to the leaching tank for & quot; Eluent & quot; The purity of mixed rare earth oxide is more than 92% 
extended data:
the distribution of rare earth minerals is mainly silicate and oxide in magmatic rocks and pegmatites, and fluorocarbonate and phosphate in hydrothermal deposits and weathering crust deposits. Most of the yttrium rich minerals are hosted in granitoids and related pegmatites, aerogenic hydrothermal deposits and hydrothermal deposits
Rare earth elements often coexist in the same mineral because of their similar atomic structure, chemical and crystal chemical properties, that is, cerium group rare earth elements and yttrium group rare earth elements often coexist in the same mineral, but these elements do not coexist in the same amount, some minerals are dominated by cerium group rare earth elements, and some minerals are dominated by yttrium group rare earth elementsmix 60% of rare earth concentrate with concentrated alkali solution, and melt at high temperature. The rare earth concentrate will be decomposed, and the rare earth will be changed into rare earth hydroxide. The alkali cake will be washed with water to remove sodium salt and excess alkali, and then the washed rare earth hydroxide will be dissolved with hydrochloric acid, and the rare earth will be dissolved into rare earth chloride solution, and the acidity will be adjusted to remove impurities, The filtered rare earth chloride solution is concentrated and crystallized to obtain solid rare earth chloride
4. Ion type rare earth ore, which is unique in China, is distributed in southern provinces and is rich in medium and heavy rare earth elements. At present, the solution mining method (in-situ leaching) is mainly used, and the main reagents are ammonia (ammonium chloride, ammonium sulfate, etc.). The solution is generally prepared in three stages, and the injection technology of first concentrated and then diluted, first up and then down, first liquid and then water is adopted to improve the leaching rate and shorten the leaching time, The top water large circulation technology is used to prevent landslides, prevent the mother liquor from seeping out from the mountain ridge and dilute the mother liquor. The water sealing technology is used to prevent the leaching liquor from seeping out and improve the recovery rate of the leaching liquor. The mother liquor is purified, cleaned, precipitated, filtered and dried to obtain rare earth oxides
rare earth is the abbreviation of rare earth group elements, and 17 elements are often classified into the rare earth family. China is the country with the richest rare earth resources, and its reserves and output rank first in the world. Ionic rare earth is a new type of rare earth mineral resources in China. It is characterized by complete distribution, high content of high value-added elements, low specific radioactivity, many high-tech application elements and high comprehensive utilization value; Five & quot; In a sense, it has changed, promoted and accelerated the process of world high technology. The second generation extraction technology of ionic rare earth -- & quot; In situ leaching process;, Won the & quot; The Eighth Five Year Plan & quot; The national science and technology major achievement award is the national & quot; The Eighth Five Year Plan & quot; Science and technology attacking the pass & quot; Top ten world leading technological achievements & quot; He won the National Invention Award in 1997. This research achievement was reported by CCTV in the news program in 1996. It is a unique ionic rare earth in China. Since the discovery, naming and the invention of the second generation extraction process in 1970, after 25 years of confidentiality management, it has been officially disclosed at home and abroad for the first time; Show up & quot
the technology of ionic rare earth is the independent intellectual property of China. Ganzhou Research Institute of nonferrous metallurgy is the main unit of scientific and technological achievements in the discovery and naming of ion adsorption rare earth ore and the second generation of rare earth extraction technology in China. Comrade Ding Jiayu, who was then deputy director in charge of scientific research and later director of Ganzhou Institute of nonferrous metallurgy, as the main participant and leader in the invention and application of the second generation extraction process of ionic rare earth ore, has an unforgettable memory of the historical development process of this event. At the request of the reporter, Comrade Ding Jiayu reviewed and summarized this historical event comprehensively and systematically
up to 1970, in the past 175 years of development and utilization history of rare earth mineral resources, it was found that there are as many as 200 kinds of minerals containing rare earth elements and their compounds in nature. However, there are only a few rare earth minerals with real instrial value, about 10 kinds. There are mainly monazite, ceric silica, bastnaesite, beryllium yttrium silicate, phosphorite, epidote, niobium yttrium ore and black rare gold ore. However, most of these minerals contain a certain amount of uranium or thorium, and the rare earth minerals exist as solid and mineral phase minerals, which are often associated with radioactive elements
in the late 20th century, with the rapid development of high technology and instrialization in the world, especially since the 1980s, the use of medium and heavy rare earth elements in the world has increased sharply, especially the demand for neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, yttrium and other rare earth elements. In view of the following reasons: first, in the traditional rare earth mineral resources, the content of most of the above rare earth elements is limited, so it is difficult to obtain rare earth concentrate; Second, because of the complexity of the proction process, the process is very long, the cost is high, and the price is expensive. If it has to be instrialized, it is very difficult, and the output is difficult to meet the requirements; Third, according to the characteristics of traditional rare earth deposit resources, if we want to obtain the above-mentioned target elements in a certain mine at the same time, it is difficult to achieve the effect. It is necessary to mine multiple rare earth mines with different distribution to meet the above-mentioned needs at the same time. Obviously, only relying on the development of traditional rare earth resources is bound to be difficult to meet the rapid development trend of modern high technology and the demand for rare earth elements. Therefore, this situation will inevitably lead to the pursuit and exploration of new rare earth resources, hoping to obtain the reliable guarantee of rare earth resources needed by high technology< In fact, as early as the 1960s, China recognized the important role of medium and heavy rare earth resources, especially heavy rare earth resources, in national defense construction and national economic construction from a strategic perspective. In the mid-1960s, the former Ministry of metallurgical instry organized the South heavy rare earth resources research conference according to the national military plan. Aiming at the surrounding rock of a mine in South China, through scientific and technological research, the code named & quot; Proct 6 & quot; Heavy rare earth procts. Through the cooperation of the units participating in the war, the technological process has been got through, and the & quot; Proct 6 & quot; Samples. But the cost is very high, and it is difficult to implement instrialization. But then came & quot; Cultural Revolution;, The battle had to be suspended
after several twists and turns, the use of traditional experimental research methods have failed, but still not afraid of difficulties, indomitable, adhere to explore, and strive to tackle key problems. After hard work, we abandoned the traditional method of studying rare earth deposits in granite weathering crust, creatively adopted a variety of comprehensive technical means, such as rare earth soluble analysis and pulp resin adsorption, and finally graally opened up the problem; No mineralization & quot; Of & quot; Ion adsorption rare earth ore & quot; It's the secret of life.
rare earth is the abbreviation of rare earth group elements, and 17 elements are often classified into the rare earth family. China is the country with the richest rare earth resources, and its reserves and output rank first in the world. Ionic rare earth is a new type of rare earth mineral resources in China. It is characterized by complete distribution, high content of high value-added elements, low specific radioactivity, many high-tech application elements and high comprehensive utilization value; Five & quot; In a sense, it has changed, promoted and accelerated the process of world high technology. The second generation extraction technology of ionic rare earth -- & quot; In situ leaching process;, Won the & quot; The Eighth Five Year Plan & quot; The national science and technology major achievement award is the national & quot; The Eighth Five Year Plan & quot; Science and technology attacking the pass & quot; Top ten world leading technological achievements & quot; He won the National Invention Award in 1997. This research achievement was reported by CCTV in the news program in 1996. It is a unique ionic rare earth in China. Since the discovery, naming and the invention of the second generation extraction process in 1970, after 25 years of confidentiality management, it has been officially disclosed at home and abroad for the first time; Show up & quot
the technology of ionic rare earth is the independent intellectual property of China. Ganzhou Research Institute of nonferrous metallurgy is the main unit of scientific and technological achievements in the discovery and naming of ion adsorption rare earth ore and the second generation of rare earth extraction technology in China. Comrade Ding Jiayu, who was then deputy director in charge of scientific research and later director of Ganzhou Institute of nonferrous metallurgy, as the main participant and leader in the invention and application of the second generation extraction process of ionic rare earth ore, has an unforgettable memory of the historical development process of this event. At the request of the reporter, Comrade Ding Jiayu reviewed and summarized this historical event comprehensively and systematically
up to 1970, in the past 175 years of development and utilization history of rare earth mineral resources, it was found that there are as many as 200 kinds of minerals containing rare earth elements and their compounds in nature. However, there are only a few rare earth minerals with real instrial value, about 10 kinds. There are mainly monazite, ceric silica, bastnaesite, beryllium yttrium silicate, phosphorite, epidote, niobium yttrium ore and black rare gold ore. However, most of these minerals contain a certain amount of uranium or thorium, and the rare earth minerals exist as solid and mineral phase minerals, which are often associated with radioactive elements
in the late 20th century, with the rapid development of high technology and instrialization in the world, especially since the 1980s, the use of medium and heavy rare earth elements in the world has increased sharply, especially the demand for neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, yttrium and other rare earth elements. In view of the following reasons: first, in the traditional rare earth mineral resources, the content of most of the above rare earth elements is limited, so it is difficult to obtain rare earth concentrate; Second, because of the complexity of the proction process, the process is very long, the cost is high, and the price is expensive. If it has to be instrialized, it is very difficult, and the output is difficult to meet the requirements; Third, according to the characteristics of traditional rare earth deposit resources, if we want to obtain the above-mentioned target elements in a certain mine at the same time, it is difficult to achieve the effect. It is necessary to mine multiple rare earth mines with different distribution to meet the above-mentioned needs at the same time. Obviously, only relying on the development of traditional rare earth resources is bound to be difficult to meet the rapid development trend of modern high technology and the demand for rare earth elements. Therefore, this situation will inevitably lead to the pursuit and exploration of new rare earth resources, hoping to obtain the reliable guarantee of rare earth resources needed by high technology< In fact, as early as the 1960s, China recognized the important role of medium and heavy rare earth resources, especially heavy rare earth resources, in national defense construction and national economic construction from a strategic perspective. In the mid-1960s, the former Ministry of metallurgical instry organized the South heavy rare earth resources research conference according to the national military plan. Aiming at the surrounding rock of a mine in South China, through scientific and technological research, the code named & quot; Proct 6 & quot; Heavy rare earth procts. Through the cooperation of the units participating in the war, the technological process has been got through, and the & quot; Proct 6 & quot; Samples. But the cost is very high, and it is difficult to implement instrialization. But then came & quot; Cultural Revolution;, The battle had to be suspended
after several twists and turns, the use of traditional experimental research methods have failed, but still not afraid of difficulties, indomitable, adhere to explore, and strive to tackle key problems. After hard work, we abandoned the traditional method of studying rare earth deposits in granite weathering crust, creatively adopted a variety of comprehensive technical means, such as rare earth soluble analysis and pulp resin adsorption, and finally graally opened up the problem; No mineralization & quot; Of & quot; Ion adsorption rare earth ore & quot; It's the secret of life.
5. After mining, oxalic acid is used for chemical reaction, and then water is used for washing. It's similar to mining in peacetime. I've seen people mining before, but it's the most basic. It doesn't separate all kinds of rare metals. If you are more professional, you can get valuable rare metals from the washed water.
6. Hello, according to the prompt now, your hard disk partition table type does not match the settings in the BIOS of the motherboard, so it cannot boot. The solution is also shown in the software tips. Did you install win8 or win10 before? It looks like, but you are installing win7 now, so the partition table type and motherboard settings are not unified. If you want to install win7, there is a legacy option in the boot item of the BIOS on the motherboard. It must be enabled. This is what matches the hard disk partition table type MBR. If win10 is installed, the hard disk partition table type must be formatted as a guid, and UEFI must be selected in the boot item in the BIOS of the motherboard, so as to ensure that the system can boot normally.
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8. If the time after water entering is relatively short, this method may be able to save the battery, but it needs to be washed three times. Instead of adding dilute sulfuric acid, the original solution is added, and the concentration is determined. If the time goes on, different ions in the water will react with the electrode of the battery, thus destroying the activation layer of the electrode and so on.
9. There is the first generation extraction process of ionic rare earth in Guangdong Province; Extraction technology in different places;, Or it comes down to & quot; Pool leaching process & quot;. The main technological process is as follows: topsoil stripping → excavation of ore bearing body, ore transportation → leaching pool → taking electrolyte solution prepared according to a certain proportion (concentration requirement) as & quot; Eluent & quot; Or & quot; Leaching agent;, The solution is added to the leaching tank, and the concentration of & quot; Ionic phase & quot; Rare earth ore is analyzed by & quot; Percolation elution & quot; Or & quot; Leaching & quot; In the solution, the active ions exchange with rare earth ions; Ionic phase & quot; Rare earth is exchanged from the ore bearing carrier minerals and becomes a new state of rare earth; Add & quot; Top water;, The mother liquor containing rare earth was obtained; The mother liquor flows into the collecting tank or mother liquor tank through the pipeline or infusion ditch, and then enters the sedimentation tank; After leaching, the waste resie is removed from the leaching tank and discharged in different places → precipitant and impurity remover are added to the sedimentation tank to remove and precipitate the rare earth from the mother liquor and obtain mixed rare earth; After treatment, the supernatant was returned to the leaching tank for & quot; Eluent & quot; The purity of mixed rare earth oxide is more than 92%. It can be seen from the above that the key words in this process are: & quot; Topsoil stripping& quot; Excavation of ore bearing body& quot; Ore handling& quot; Leaching pool& quot; Eluent & quot& quot; Allopatric percolation elution& quot; Ion exchange& quot; Rare earth containing mother liquor& quot; Tailing discharge in different places& quot; Mother liquor pool& quot; Sedimentation tank& quot; Precipitant, impurity remover& quot; Precipitation and impurity removal& quot; Mixed rare earth& quot; Supernatant return& quot; Burn & quot& quot; REO ≥ 92% mixed rare earth oxides< br />
" Pool Leaching Technology & quot; Compared with the traditional proction process, the first, second and third processes are similar to those of the traditional mining process; The third, fourth and fifth working proceres are similar to those of traditional mineral processing and hydrometallurgy; The processes after the fifth process belong to the traditional hydrometallurgical processes. Among them, the & quot; Leaching pool;, It plays the role of connecting traditional mining and mineral processing professional operations, similar to the & quot; Raw ore & quot;; The & quot; Sedimentation tank;, However, it plays a role of connecting traditional mineral processing and hydrometallurgy, similar to the & quot; The raw material is & quot
therefore, similar to the main separation process of traditional mineral processing specialty, it is in & quot; Leaching pool & quot; And as an intermediate proct of the process, a mother liquor containing rare earth is obtained here; The typical hydrometallurgical process, which belongs to the traditional hydrometallurgical specialty, is mainly in & quot; Sedimentation tank & quot; And from this we get & quot; Rare earth concentrate & quot; The primary procts of China; Mixed rare earth & quot;; The & quot; Rare earth concentrate & quot; Final proct: mixed rare earth oxide with REO ≥ 92%
in addition, in the above operation process, we obtained & quot; Intermediate procts& quot; Primary procts & quot; And & quot; Final proct & quot;. That is, in & quot; Leaching pool & quot; The mother liquor containing rare earth was prepared by ion exchange; In & quot; Sedimentation tank & quot; The mixed rare earth was prepared by precipitation; In & quot; Burn & quot; The mixed rare earth oxide was prepared by the reaction of rare earth and rare earth. Therefore, in order to ensure the proct quality of ionic rare earth, we should control the technology in the three key operations
in this process, the & quot; Rare earth concentrate & quot; Proct is no longer the traditional concept of & quot; Rare earth concentrate & quot; Mineral procts, but relatively high purity & quot; Mixed rare earth oxides & quot; Procts. Strictly speaking, the final procts obtained from ion type rare earth mines are no longer subordinate to & quot; Mineral procts;, It is a proct in the field of hydrometallurgy. Obviously, the grade of its procts has been greatly improved compared with that of traditional mining procts
the above process structure is a new process in the development and utilization of rare earth mineral resources. It completely breaks the traditional process of rare earth resource development, and integrates a variety of specialties and processes to directly proce high purity mixed rare earth oxide procts in mines. Using this proction process, the quality index of the proct is difficult to achieve in the previous rare earth proction process. It can be seen that using this proct as raw material is very beneficial to the further processing of rare earth smelting
however, everything in the world often has & quot; Duality & quot;. Ionic rare earth has a very outstanding advantage, but because of its occurrence characteristics and process characteristics, it is not satisfactory on the other side. With & quot; Pool Leaching Technology & quot; After instrial proction, there are some very sharp and prominent problems: first, the ecological environment is greatly damaged. Due to the widespread occurrence of ionic rare earth in the shallow layer of the earth's surface, the distribution area is large; Pool Leaching Technology & quot; In fact, the proction process is a & quot; The movement of moving mountains;. According to statistics, for each ton of mixed rare earth oxide proction, about 1201-2001 tons of ore will be consumed. At the same time, 1200-2000 tons of tailings will be proced, and the sanding area is about 1 mu. Second, the utilization rate of resources is low and the waste of resources is large. In order to facilitate the mining and transportation of ore and the discharge of tailings, rece costs and save investment, the & quot; Leaching pool & quot; It is located in the middle and lower part of the hillside orebody; Leaching pool & quot; The following ore bodies are controlled by the established proction system; Ore pressing;, Especially if it is covered by tailings, it is more difficult to exploit. According to the data, the utilization rate of resources in the process table is generally less than 50%, and the lower is only about 25-30%.
" Pool Leaching Technology & quot; Compared with the traditional proction process, the first, second and third processes are similar to those of the traditional mining process; The third, fourth and fifth working proceres are similar to those of traditional mineral processing and hydrometallurgy; The processes after the fifth process belong to the traditional hydrometallurgical processes. Among them, the & quot; Leaching pool;, It plays the role of connecting traditional mining and mineral processing professional operations, similar to the & quot; Raw ore & quot;; The & quot; Sedimentation tank;, However, it plays a role of connecting traditional mineral processing and hydrometallurgy, similar to the & quot; The raw material is & quot
therefore, similar to the main separation process of traditional mineral processing specialty, it is in & quot; Leaching pool & quot; And as an intermediate proct of the process, a mother liquor containing rare earth is obtained here; The typical hydrometallurgical process, which belongs to the traditional hydrometallurgical specialty, is mainly in & quot; Sedimentation tank & quot; And from this we get & quot; Rare earth concentrate & quot; The primary procts of China; Mixed rare earth & quot;; The & quot; Rare earth concentrate & quot; Final proct: mixed rare earth oxide with REO ≥ 92%
in addition, in the above operation process, we obtained & quot; Intermediate procts& quot; Primary procts & quot; And & quot; Final proct & quot;. That is, in & quot; Leaching pool & quot; The mother liquor containing rare earth was prepared by ion exchange; In & quot; Sedimentation tank & quot; The mixed rare earth was prepared by precipitation; In & quot; Burn & quot; The mixed rare earth oxide was prepared by the reaction of rare earth and rare earth. Therefore, in order to ensure the proct quality of ionic rare earth, we should control the technology in the three key operations
in this process, the & quot; Rare earth concentrate & quot; Proct is no longer the traditional concept of & quot; Rare earth concentrate & quot; Mineral procts, but relatively high purity & quot; Mixed rare earth oxides & quot; Procts. Strictly speaking, the final procts obtained from ion type rare earth mines are no longer subordinate to & quot; Mineral procts;, It is a proct in the field of hydrometallurgy. Obviously, the grade of its procts has been greatly improved compared with that of traditional mining procts
the above process structure is a new process in the development and utilization of rare earth mineral resources. It completely breaks the traditional process of rare earth resource development, and integrates a variety of specialties and processes to directly proce high purity mixed rare earth oxide procts in mines. Using this proction process, the quality index of the proct is difficult to achieve in the previous rare earth proction process. It can be seen that using this proct as raw material is very beneficial to the further processing of rare earth smelting
however, everything in the world often has & quot; Duality & quot;. Ionic rare earth has a very outstanding advantage, but because of its occurrence characteristics and process characteristics, it is not satisfactory on the other side. With & quot; Pool Leaching Technology & quot; After instrial proction, there are some very sharp and prominent problems: first, the ecological environment is greatly damaged. Due to the widespread occurrence of ionic rare earth in the shallow layer of the earth's surface, the distribution area is large; Pool Leaching Technology & quot; In fact, the proction process is a & quot; The movement of moving mountains;. According to statistics, for each ton of mixed rare earth oxide proction, about 1201-2001 tons of ore will be consumed. At the same time, 1200-2000 tons of tailings will be proced, and the sanding area is about 1 mu. Second, the utilization rate of resources is low and the waste of resources is large. In order to facilitate the mining and transportation of ore and the discharge of tailings, rece costs and save investment, the & quot; Leaching pool & quot; It is located in the middle and lower part of the hillside orebody; Leaching pool & quot; The following ore bodies are controlled by the established proction system; Ore pressing;, Especially if it is covered by tailings, it is more difficult to exploit. According to the data, the utilization rate of resources in the process table is generally less than 50%, and the lower is only about 25-30%.
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