CN114959289A - Method for recovering platinum from palladium extraction organic phase - Google Patents
Method for recovering platinum from palladium extraction organic phase Download PDFInfo
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- CN114959289A CN114959289A CN202210437481.7A CN202210437481A CN114959289A CN 114959289 A CN114959289 A CN 114959289A CN 202210437481 A CN202210437481 A CN 202210437481A CN 114959289 A CN114959289 A CN 114959289A
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000000605 extraction Methods 0.000 title claims abstract description 68
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 46
- 229910052763 palladium Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000012074 organic phase Substances 0.000 title claims abstract description 23
- 238000001179 sorption measurement Methods 0.000 claims abstract description 16
- 230000005484 gravity Effects 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 44
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 38
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 19
- 238000003795 desorption Methods 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 13
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 7
- 230000029087 digestion Effects 0.000 claims description 7
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 claims description 6
- 238000011069 regeneration method Methods 0.000 claims description 6
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 claims description 5
- 244000248349 Citrus limon Species 0.000 claims description 5
- 235000005979 Citrus limon Nutrition 0.000 claims description 5
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000007865 diluting Methods 0.000 claims description 5
- 238000002386 leaching Methods 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 239000001119 stannous chloride Substances 0.000 claims description 5
- 235000011150 stannous chloride Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 2
- 229920001429 chelating resin Polymers 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims description 2
- JWEWNTJADCWFRP-UHFFFAOYSA-N 3-methyl-1-(3-methylbutylsulfanyl)butane Chemical compound CC(C)CCSCCC(C)C JWEWNTJADCWFRP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 7
- 239000010970 precious metal Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- -1 platinum group metals Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
- C22B3/24—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition by adsorption on solid substances, e.g. by extraction with solid resins
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for recovering platinum in an extracted palladium organic phase, and particularly relates to a method for recovering trace co-extracted platinum in a continuous palladium extraction process by adopting a process route of 'back extraction-digestion-adsorption-desorption-powder making' for a blank organic phase formed after a loaded organic phase is subjected to back extraction in the process of extracting palladium by taking diisoamyl sulfide as a main component of the organic phase, wherein the method specifically comprises the following 5 steps: (1) back extraction; (2) digesting; (3) adsorption; (4) desorbing; (5) and (5) pulverizing. The specific gravity of the recovered platinum can reach 6 g/cm 3 The continuous extraction process of palladium is not influenced, and the process flow is simple, economic, environment-friendly, convenient and effective.
Description
Technical Field
The invention relates to the technical field of precious metal metallurgy and wet methods, in particular to a method for recovering platinum from a palladium extraction organic phase.
Technical Field
In the process of precious metal wet refining, extraction separation is a common typical method, and diisoamyl sulfide (S) is generally adopted in the production process of platinum group metals 201 ) As a main extractant component, continuous palladium extraction is realized through the flow of extraction, washing, back extraction, regeneration and balance, so that palladium and sulfur atoms in an organic phase are directly coordinated and extracted, and the separation of palladium from other precious metals and base metals is realized. However, in the extraction process, due to the existence of mercaptan, sulfoxide oxide and the like in the diisoamyl sulfide, the platinum in the solution can be co-extracted, and the recovery and the balance are only needed, so that the recovery and the utilization of trace platinum co-extracted in an organic phase are difficult. The platinum is remained in the organic phase for a long time, so that the extraction efficiency of the palladium is easily reduced, and the cycle service life of the organic phase is shortened; meanwhile, platinum contained in the organic phase is generally recovered by the traditional incineration process, but the incineration process can thoroughly destroy the organic phase, so that the organic phase cannot be recycled, the continuous extraction process cannot be realized, and the method is not environment-friendly, so that the method is extremely important for exploring a new treatment process.
Disclosure of Invention
The invention aims to provide a method for recovering platinum from a palladium extraction organic phase, which has the process route of 'back extraction-digestion-adsorption-desorption-powder preparation', can realize the recovery of co-extracted platinum in the continuous palladium extraction process, and is used for recovering the co-extracted platinum of an organic phase in the palladium extraction process.
The purpose of the invention is realized by the following technical scheme:
a method for recovering platinum from a palladium extraction organic phase is characterized by comprising the following steps:
(1) back extraction: adding a platinum back-extraction section in the continuous palladium extraction process, and recovering platinum co-extracted in the palladium extraction process by using thiourea as a back-extraction agent, wherein the grade number of the platinum back-extraction section is 3-5, the addition position of the platinum back-extraction section is the middle of a regeneration section, the mass fraction of thiourea back-extraction liquid is 1% -5%, and the comparison is that O/A = 3: 1-2, the platinum back extraction in the continuous palladium extraction process can be realized, and the thiourea back extraction solution is generated after the platinum back extraction is recovered;
(2) digestion: adding one or two of nitric acid, sulfuric acid, hydrogen peroxide and sodium hydroxide into the thiourea back extraction solution obtained in the step (1) for digestion, adding hydrochloric acid solution of 0.5-6 mol/L for dissolution after the total proportion of 1-2% of the volume of the thiourea back extraction solution is added, and filtering to remove precipitated substances to obtain a dissolved solution;
(3) adsorption: adsorbing the solution obtained in the step (2) by chelating resin, wherein the adsorption grade is 2-4 grades, the flow rate of the solution is 8-10 BV/h, and leaching by using 3 BV pure water after adsorption is finished to obtain load resin;
(4) desorption: desorbing the loaded resin obtained in the step (3) by adopting a chlorine gas and hydrochloric acid solution, wherein the acidity of the hydrochloric acid solution is 1-4 mol/L, and the solid-to-liquid ratio is m Supported resin ：V Hydrochloric acid solution = 1: 3-6, introducing chlorine for 4-10 hours, and filtering to obtain desorption liquid;
(5) preparing a reducing agent: firstly, diluting hydrazine hydrate to 3-10%, then adding hydrochloric acid according to 0.5-1.5 times of the volume of the hydrazine hydrate, controlling the temperature at 50-60 ℃, and uniformly stirring to prepare a reducing agent;
(6) milling: reducing the desorption solution obtained in the step (4) by adopting the reducing agent prepared in the step (5) to prepare powder, controlling the gram/liter concentration of platinum in a system to be 50-120 g/L during reduction, controlling the temperature of the desorption solution to be 70-100 ℃, detecting stannous chloride as lemon yellow at the reduction end point, and filtering to obtain the desorption solution with the specific gravity of 6 g/cm 3 The above heavy platinum.
Compared with the prior art, the invention has the following beneficial effects:
1. the method for recovering platinum from the palladium extraction organic phase has the advantages of simple process flow, economy, environmental protection, convenience and effectiveness.
2. The method for recovering the platinum from the palladium extraction organic phase can realize the high-efficiency recovery of the co-extracted platinum in the continuous palladium extraction process, and does not influence the continuous palladium extraction process.
3. The method for recovering the platinum from the palladium extraction organic phase can obtain the platinum with the specific gravity of 6 g/cm 3 The heavy platinum solves the problem that the platinum black produced by the original process flies and is lost in the subsequent refining process.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are included as part of the present invention and are intended to provide further details and to demonstrate the effectiveness of the invention.
The main components of the blank organic phase used in this experiment are shown in Table 1 below
TABLE 1 blank organic phase major ingredients Table
| Component (A) | Pt | Pd | Ni | Cu | Se |
| Content (ppm) | 823.1 | 11.12 | 271.12 | 223.55 | 22.12 |
Example 1
(1) Back extraction: in the continuous palladium extraction process, a platinum stripping section 3 grade is added in the middle of a regeneration section, and 4% thiourea is used as a platinum stripping agent, compared with the ratio of O/A = 3: and 2, realizing the back extraction recovery of the platinum in the continuous palladium extraction process to obtain 50L of thiourea back extraction liquid.
(2) Digestion: adding 0.5L of nitric acid and hydrogen peroxide into 50L of the thiourea back extraction solution obtained in the step (1), digesting, adding 5L of 2 mol/L hydrochloric acid solution for dissolving, and filtering to remove precipitate substances to obtain a dissolved solution.
(3) Adsorption: and (3) adsorbing the dissolved solution obtained in the step (2) by using resin, wherein the adsorption stage number is 3, the flow rate of the solution is 8 BV/h, and leaching by using 3 BV of pure water after adsorption is finished to obtain the loaded resin.
(4) Desorption: desorbing the resin obtained in the step (3) by adopting a chlorine and hydrochloric acid solution, wherein the acidity of the hydrochloric acid solution is 2.5 mol/L, and the solid-to-liquid ratio is 1: 4, introducing chlorine for 6 hours, and filtering to obtain 4L of desorption solution.
(5) Preparing a reducing agent: firstly, adding 0.1L of hydrazine hydrate into 1L of pure water, diluting to 7.7 percent, then adding 0.12L of hydrochloric acid, controlling the temperature at 55 ℃, and uniformly stirring to obtain the reducing agent.
(6) Milling: concentrating the desorption solution obtained in the step (4) to about 1L, controlling the reaction temperature to be 85 ℃, slowly and uniformly adding the reducing agent prepared in the step (5) for reduction, stopping reduction when stannous chloride is detected to be lemon yellow, and filtering to obtain the product with the specific gravity of 6.21 g/cm 3 The platinum powder of (1).
Example 2
(1) Back extraction: in the continuous palladium extraction process, a platinum stripping section 3 grade is added in the middle of a regeneration section, 5% thiourea is used as a platinum stripping agent, and the ratio of O/A = 3: 1, realizing the back extraction recovery of platinum in the continuous palladium extraction process, and obtaining 30L of thiourea back extraction liquid.
(2) Digestion: and (2) adding 0.4L of sulfuric acid and hydrogen peroxide into 30L of the thiourea back extract obtained in the step (1), digesting, adding 4L of 1.5 mol/L hydrochloric acid solution for dissolving, and filtering to remove precipitate substances to obtain a dissolved solution.
(3) Adsorption: and (3) adsorbing the solution obtained in the step (2) by using resin, wherein the adsorption stage number is 4, the flow rate of the solution is 9 BV/h, and leaching by using 3 BV of pure water after adsorption is finished to obtain the loaded resin.
(4) Desorption: desorbing the resin obtained in the step (3) by adopting a chlorine and hydrochloric acid solution, wherein the acidity of the hydrochloric acid solution is 3 mol/L, and the solid-to-liquid ratio is 1: and 3, introducing chlorine for 8 hours, and filtering to obtain 3L of desorption solution.
(5) Preparing a reducing agent: firstly, adding 0.12L of hydrazine hydrate into 1L of pure water, diluting to 9.1 percent, then adding 0.1L of hydrochloric acid, controlling the temperature at 50 ℃, and uniformly stirring to obtain the reducing agent.
(6) Milling: concentrating the desorption solution obtained in the step (4) to about 0.8L, controlling the reaction temperature to 95 ℃, slowly and uniformly adding the reducing agent prepared in the step (5) for reduction, stopping reduction when stannous chloride is detected to be lemon yellow, and filtering to obtain the product with the specific gravity of 6.57 g/cm 3 The platinum powder of (1).
Example 3
(1) Back extraction: in the continuous palladium extraction process, a platinum stripping section 3 grade is added in the middle of a regeneration section, and 2% thiourea is used as a platinum stripping agent, compared with the ratio of O/A = 3: and 2, realizing the back extraction recovery of the platinum in the continuous palladium extraction process to obtain 60L of thiourea back extraction liquid.
(2) Digestion: adding 0.8L of nitric acid into 60L of the thiourea back extract obtained in the step (1), digesting, adding 4L of hydrochloric acid solution of 3 mol/L for dissolving, and filtering to remove precipitated substances to obtain a dissolved solution.
(3) Adsorption: and (3) adsorbing the dissolved solution obtained in the step (2) by using resin, wherein the adsorption stage number is 3, the flow rate of the solution is 10 BV/h, and leaching by using 3 BV of pure water after adsorption is finished to obtain the loaded resin.
(4) Desorption: desorbing the resin obtained in the step (3) by adopting a chlorine and hydrochloric acid solution, wherein the acidity of the hydrochloric acid solution is 2 mol/L, and the solid-to-liquid ratio is 1: 5, introducing chlorine for 7 hours, and filtering to obtain 5L of desorption solution.
(5) Preparing a reducing agent: firstly, adding 0.07L of hydrazine hydrate into 1L of pure water, diluting to 5.5 percent, then adding 0.07L of hydrochloric acid, controlling the temperature at 60 ℃, and uniformly stirring to obtain the reducing agent.
(6) Milling: concentrating the desorption solution obtained in the step (4) to about 0.6L, controlling the reaction temperature to 90 ℃, slowly and uniformly adding the reducing agent prepared in the step (5) for reduction, stopping reduction when stannous chloride is detected to be lemon yellow, and filtering to obtain the product with the specific gravity of 6.71 g/cm 3 The platinum powder of (1).
Claims (1)
1. A method for recovering platinum from a palladium extraction organic phase is characterized by comprising the following steps:
(1) back extraction: adding a platinum back-extraction section in the continuous palladium extraction process, and recovering platinum co-extracted in the palladium extraction process by using thiourea as a back-extraction agent, wherein the grade number of the platinum back-extraction section is 3-5, the addition position of the platinum back-extraction section is the middle of a regeneration section, the mass fraction of thiourea back-extraction liquid is 1% -5%, and the comparison is that O/A = 3: 1-2, the platinum can be recovered by back extraction in the continuous palladium extraction process, and thiourea back extraction liquid is generated after the platinum back extraction;
(2) digestion: adding one or two of nitric acid, sulfuric acid, hydrogen peroxide and sodium hydroxide into the thiourea back extraction solution obtained in the step (1) for digestion, adding hydrochloric acid solution of 0.5-6 mol/L for dissolution after the total proportion of 1-2% of the volume of the thiourea back extraction solution is added, and filtering to remove precipitated substances to obtain a dissolved solution;
(3) adsorption: adsorbing the solution obtained in the step (2) by chelating resin, wherein the adsorption grade is 2-4 grades, the flow rate of the solution is 8-10 BV/h, and leaching by using 3 BV pure water after adsorption is finished to obtain load resin;
(4) desorption: desorbing the loaded resin obtained in the step (3) by adopting a chlorine gas and hydrochloric acid solution, wherein the acidity of the hydrochloric acid solution is 1-4 mol/L, and the solid-to-liquid ratio is m Supported resin ：V Hydrochloric acid solution = 1: 3-6, introducing chlorine for 4-10 hours, and filtering to obtain desorption liquid;
(5) preparing a reducing agent: firstly, diluting hydrazine hydrate to 3-10%, then adding hydrochloric acid according to 0.5-1.5 times of the volume of the hydrazine hydrate, controlling the temperature at 50-60 ℃, and uniformly stirring to prepare a reducing agent;
(6) milling: reducing the desorption solution obtained in the step (4) by using the reducing agent prepared in the step (5) to prepare powder, wherein the gram/liter concentration of platinum in the system is required to be controlled to be 50-120 g/L during reduction, the temperature of the desorption solution is 70-100 ℃, the reduction end point is that stannous chloride is detected to be lemon yellow, and filtering is carried out to obtain the desorption solution with the specific gravity of 6 g/cm 3 The above heavy platinum.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2302150A1 (en) * | 1972-01-18 | 1973-07-26 | Nat Inst Metallurg | PROCESS FOR SEPARATION AND PURIFICATION OF PLATINUM METALS AND GOLD |
| CN85100109A (en) * | 1985-04-01 | 1986-07-16 | 清华大学 | With the platinum in the extraction process recovery spent catalyst |
| JP2007308749A (en) * | 2006-05-17 | 2007-11-29 | Yamaguchi Univ | Method for separating platinum from palladium |
| CN105441693A (en) * | 2015-11-18 | 2016-03-30 | 金川集团股份有限公司 | Method for separating and extracting platinum group metals |
| CN106568763A (en) * | 2016-11-08 | 2017-04-19 | 中国科学院地质与地球物理研究所 | Improved method of gold, platinum and palladium analysis through solid-phase extraction |
| CN107574314A (en) * | 2017-08-25 | 2018-01-12 | 金川集团股份有限公司 | A kind of method of refined platinum in strip liquor from platinum |
| CN111218562A (en) * | 2020-01-10 | 2020-06-02 | 湘潭大学 | Preparation of high-molecular extracting agent and method for efficiently recovering palladium by using high-molecular extracting agent |
| CN111410242A (en) * | 2020-03-12 | 2020-07-14 | 鲁西催化剂有限公司 | Method for recovering rhodium chloride from rhodium slag |
-
2022
- 2022-04-25 CN CN202210437481.7A patent/CN114959289B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2302150A1 (en) * | 1972-01-18 | 1973-07-26 | Nat Inst Metallurg | PROCESS FOR SEPARATION AND PURIFICATION OF PLATINUM METALS AND GOLD |
| CN85100109A (en) * | 1985-04-01 | 1986-07-16 | 清华大学 | With the platinum in the extraction process recovery spent catalyst |
| JP2007308749A (en) * | 2006-05-17 | 2007-11-29 | Yamaguchi Univ | Method for separating platinum from palladium |
| CN105441693A (en) * | 2015-11-18 | 2016-03-30 | 金川集团股份有限公司 | Method for separating and extracting platinum group metals |
| CN106568763A (en) * | 2016-11-08 | 2017-04-19 | 中国科学院地质与地球物理研究所 | Improved method of gold, platinum and palladium analysis through solid-phase extraction |
| CN107574314A (en) * | 2017-08-25 | 2018-01-12 | 金川集团股份有限公司 | A kind of method of refined platinum in strip liquor from platinum |
| CN111218562A (en) * | 2020-01-10 | 2020-06-02 | 湘潭大学 | Preparation of high-molecular extracting agent and method for efficiently recovering palladium by using high-molecular extracting agent |
| CN111410242A (en) * | 2020-03-12 | 2020-07-14 | 鲁西催化剂有限公司 | Method for recovering rhodium chloride from rhodium slag |
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