CN102041393A - Silver anode mud treatment process - Google Patents

Silver anode mud treatment process Download PDF

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Publication number
CN102041393A
CN102041393A CN2010106211760A CN201010621176A CN102041393A CN 102041393 A CN102041393 A CN 102041393A CN 2010106211760 A CN2010106211760 A CN 2010106211760A CN 201010621176 A CN201010621176 A CN 201010621176A CN 102041393 A CN102041393 A CN 102041393A
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China
Prior art keywords
palladium
silver
solution
precipitate
gold
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Pending
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CN2010106211760A
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Chinese (zh)
Inventor
谢兆凤
张圣南
马辉
曹永贵
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Chengzhou City Jingui Silver Co Ltd
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Chengzhou City Jingui Silver Co Ltd
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Priority to CN2010106211760A priority Critical patent/CN102041393A/en
Publication of CN102041393A publication Critical patent/CN102041393A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention relates to a silver anode mud treatment process. The process is characterized by leaching silver anode mud with nitric acid, wherein silver, palladium and base metals enter into solution while gold and platinum remain in residue; after roasting the leaching residue and removing impurities, using a cast gold anode plate to electrolyze the leaching residue to obtain gold No. 1 and using electrolyte for recycling platinum; regulating the pH value of leachate and adding mixed precipitator A solution to selectively precipitate palladium to obtain palladium precipitate residues; solution after palladium precipitation mainly being AgNO3 solution and returning the AgNO3 solution to undergo silver electrolysis; dissolving the palladium precipitate residues with aqua regia and filtering the dissolved solution to obtain the filter residue which is mainly AgCl, reducing the filter residue with hydrazine hydrate to obtain crude silver powder and returning the crude silver powder to a cast silver anode plate; and concentrating and carrying out ammonium on the solution after dissolution to obtain (NH4)2PdCl6 precipitate, dissolving the (NH4)2PdCl6 precipitate with ammonia and acidizing the (NH4)2PdCl6 precipitate with hydrochloric acid to obtain Pd(NH3)2Cl2 precipitate, then reducing the Pd(NH3)2Cl2 precipitate with hydrazine hydrate and then drying the reduction product to obtain spongy palladium, wherein the produced filtrate is returned to the concentration process. The invention has the advantages of less precious metal loss, low cost, strong practicability, high comprehensive recoverability and obvious economic benefit.

Description

The treatment process of silver anode slime
Technical field
The present invention relates to a kind of treatment process of silver anode slime, belong to non-ferrous metal hydrometallurgy field.
Background technology
Electrolytic refining process is the common method of preparation high pure metal.As the electrorefining process of silver, be to make anode with thick silver, the titanium plate is made negative electrode, and silver nitrate aqueous solution is made electrolytic solution, at volts DS 1.5~3.5V, electric current 250~300A/m 2Condition under refining can obtain 99.99% silver.
Thick silver generally all contains plurality of impurities such as Au, Pt, Pd and base metal Pb, Cu, Bi before electrolysis.In electrolytic process, gold that electropotential ratio silver is big and platinum metals major part can not dissolved and be precipitated, and the base metal impurity part meeting that electropotential is littler than silver forms oxide compound or subsalt also can precipitate, and these throw outs have just constituted silver anode slime.The productive rate of silver anode slime is higher, is about 8%, and composition is more complicated also, and main chemical compositions is Au 30~40%, Ag40~50%, Pd1~2%, Pt 0.1~0.4%, Pb0.04~0.07%, Cu3~4%, Bi0.05~0.1%.So silver anode slime is the main raw material that extracts gold and reclaim the platinum palladium.
At present, silver anode slime usually adopts chlorination process to handle in large-lot producer, leaches with hydrochloric acid and sodium chlorate, silver-coloredly enters in the parting slag with AgCl, and parting liquid is with oxalic acid or SO 2Reduction obtains thick bronze, carries out golden electrolysis then, reduction back liquid displacement platinum palladium.But problems such as there is the difficult control of leaching condition in this method, leaches reagent price height, precious metal is difficult to separate with base metal, platinum palladium separation difficulty, the rate of recovery are low.And this method is difficult to miniaturization, and the silver anode slime limited amount of general smelting enterprise can't be handled with aforesaid method, have to sell outward, is worth but precious metal so wherein is not recovered utilization and has a greatly reduced quality, and has caused enterprise's tremendous economic loss.Therefore be badly in need of a kind of novel process of invention and come the Processing Ag anode sludge.
Summary of the invention
In order to overcome the deficiency of above-mentioned silver anode slime treatment process, the invention provides a kind of treatment process of silver anode slime.This technology leaching condition is easy to control, make become separating of precious metal and base metal easily, the rate of recovery is high, and can miniaturization, be applicable to generally, or small-sized smelting enterprise comes the Processing Ag anode sludge.
The technical solution used in the present invention is: a kind of treatment process of silver anode slime, silver anode slime is leached with nitric acid, and the nitric acid leaching condition is a liquid-solid ratio 2~4: 1, nitric acid liquid concentration 20%~30%, 50~70 ℃ of temperature of reaction; Silver, palladium and base metal enter solution, and gold and platinum are stayed in the slag, separate after filtration leached mud and leach liquor; Casting Jinyang pole plate carries out electrolysis after the leached mud roasting removal of impurities, obtains the 1# gold; Electrolytic solution reclaims platinum and handles; Regulate the pH 0.5~2.5 of leach liquor, the mixed precipitant A solution that adds 1~1.4 times of theoretical amount precipitates palladium-selective, and 70~90 ℃ of temperature of reaction obtain heavy palladium slag; Liquid is mainly AgNO behind the heavy palladium 3Solution returns silver-colored electrolysis treatment; Heavy palladium slag aqua regia dissolution after-filtration, filter residue are mainly the AgCl precipitation, obtain thick silver powder with hydrazine hydrate reduction, return the coin silver positive plate; Liquid concentrated also " ammoniumization " obtains (NH behind the aqua regia dissolution 4) 2PdCl 6Precipitation; (NH 4) 2PdCl 6Precipitation obtains Pd (NH behind ammonia dissolving, hcl acidifying 3) 2Cl 2Precipitation obtains purity at the palladium sponge more than 99.9% again after hydrazine hydrate reduction, oven dry; Wherein the filtrate that Chan Shengs is returned concentration process; Above-mentioned ammonia dissolution conditions is 50~70 ℃ of temperature, terminal point pH8~9; Above-mentioned hcl acidifying condition is terminal point pH0.5~1.0.
Above-mentioned mixed precipitant A is a kind of xanthate solution, the chemical name of xanthate is alkyl xanthogenate or alkyl dithiocarbonate, general formula: ROC (S) SMe, and Me is sodium or potassium in the general formula, also have and make ammonium salt, R is different alkyl, alkaryl, cycloalkyl, alkoxyl group etc.The kind of xanthate is a lot, and commonly used have ethyl xanthate, butyl xanthate, sec.-propyl xanthate, Isobutylxanthic acid, amyl group xanthate, a hexyl xanthate etc.Xanthate energy and many heavy metals, precious metal ion generates insoluble chemical compound, as palladium of the present invention.
Compare with prior art, the present invention has following advantage:
The present invention sends out process can carry out selective separation with gold and silver platinum palladium, and can realize well that open circuit reclaims, and this processing to silver anode slime plays crucial effects.The present invention can carry out also can all carrying out in the part in actual applications, is applicable to the enterprise of various different scales.The advantage that this technology is outstanding is that the precious metal loss is little, cost is low, practical, comprehensively reclaim the degree height, economic benefit is obvious.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing in detail with embodiment:
Embodiment 1
A kind of treatment process of silver anode slime leaches with 20% nitric acid liquid (liquid-solid ratio 2: 1) silver anode slime 50 ℃ of following mechanical stirring, silver, palladium and base metal enter solution, and gold and platinum are stayed in the slag.Casting Jinyang pole plate carries out electrolysis after the leached mud roasting removal of impurities, obtains the 1# gold, the recyclable platinum of electrolytic solution.Regulate leach liquor pH to 0.5, the mixed precipitant A solution that adds 1 times of theoretical amount precipitates palladium-selective under 70 ℃, obtains heavy palladium slag; Liquid is mainly AgNO behind the heavy palladium 3Solution returns silver-colored electrolysis.Heavy palladium slag dissolves after-filtration fully with chloroazotic acid, and filter residue is mainly the AgCl precipitation, obtains thick silver powder with hydrazine hydrate reduction, returns the coin silver positive plate; Acid solution behind the aqua regia dissolution is boiled, be concentrated into about 1/5 of original volume, in solution, slowly add NH then 4Cl obtains (NH 4) 2PdCl 6Precipitation.(NH 4) 2PdCl 6Be deposited in 50 ℃ and stir down, slowly add ammoniacal liquor until the pH to 8 of solution resolution of precipitate, continue solution is heated to boiling, be cooled to the room temperature after-filtration, in filtrate, slowly add hydrochloric acid to pH0.5, leave standstill for some time after-filtration and obtain Pd (NH 3) 2Cl 2Precipitation obtains palladium sponge again after hydrazine hydrate reduction, oven dry, wherein the filtrate that Chan Shengs is returned concentration process.Gained palladium sponge purity is 99.91%, gold recovery 91.6%, silver raising recovery rate 95.3%, the platinum rate of recovery 92.3%, palladium recovery rate 94.2%.
Embodiment 2
A kind of treatment process of silver anode slime leaches with 25% nitric acid liquid (liquid-solid ratio 3: 1) silver anode slime 60 ℃ of following mechanical stirring, silver, palladium and base metal enter solution, and gold and platinum are stayed in the slag.Casting Jinyang pole plate carries out electrolysis after the leached mud roasting removal of impurities, obtains the 1# gold, the recyclable platinum of electrolytic solution.Regulate leach liquor pH to 1.5, the mixed precipitant A solution that adds 1.2 times of theoretical amount precipitates palladium-selective under 80 ℃, obtains heavy palladium slag; Liquid is mainly AgNO behind the heavy palladium 3Solution returns silver-colored electrolysis.Heavy palladium slag dissolves after-filtration fully with chloroazotic acid, and filter residue is mainly the AgCl precipitation, obtains thick silver powder with hydrazine hydrate reduction, returns the coin silver positive plate; Acid solution behind the aqua regia dissolution is boiled, be concentrated into about 1/5 of original volume, in solution, slowly add NH then 4Cl obtains (NH 4) 2PdCl 6Precipitation.(NH 4) 2PdCl 6Be deposited in 60 ℃ and stir down, slowly add ammoniacal liquor until the pH to 8.5 of solution resolution of precipitate, continue solution is heated to boiling, be cooled to the room temperature after-filtration, in filtrate, slowly add hydrochloric acid to pH0.8, leave standstill for some time after-filtration and obtain Pd (NH 3) 2Cl 2Precipitation obtains palladium sponge again after hydrazine hydrate reduction, oven dry, wherein the filtrate that Chan Shengs is returned concentration process.Gained palladium sponge purity is 99.93%, gold recovery 91.8%, silver raising recovery rate 95.5%, the platinum rate of recovery 92.4%, palladium recovery rate 94.6%.
Embodiment 3
A kind of treatment process of silver anode slime leaches with 30% nitric acid liquid (liquid-solid ratio 4: 1) silver anode slime 70 ℃ of following mechanical stirring, silver, palladium and base metal enter solution, and gold and platinum are stayed in the slag.Casting Jinyang pole plate carries out electrolysis after the leached mud roasting removal of impurities, obtains the 1# gold, the recyclable platinum of electrolytic solution.Regulate leach liquor pH to 2.5, the mixed precipitant A solution that adds 1.4 times of theoretical amount precipitates palladium-selective under 90 ℃, obtains heavy palladium slag; Liquid is mainly AgNO behind the heavy palladium 3Solution returns silver-colored electrolysis.Heavy palladium slag dissolves after-filtration fully with chloroazotic acid, and filter residue is mainly the AgCl precipitation, obtains thick silver powder with hydrazine hydrate reduction, returns the coin silver positive plate; Acid solution behind the aqua regia dissolution is boiled, be concentrated into about 1/5 of original volume, in solution, slowly add NH then 4Cl obtains (NH 4) 2PdCl 6Precipitation.(NH 4) 2PdCl 6Be deposited in 70 ℃ and stir down, slowly add ammoniacal liquor until the pH to 9 of solution resolution of precipitate, continue solution is heated to boiling, be cooled to the room temperature after-filtration, in filtrate, slowly add hydrochloric acid to pH 1, leave standstill for some time after-filtration and obtain Pd (NH 3) 2Cl 2Precipitation obtains palladium sponge again after hydrazine hydrate reduction, oven dry, wherein the filtrate that Chan Shengs is returned concentration process.Gained palladium sponge purity is 99.95%, gold recovery 92.1%, silver raising recovery rate 95.8%, the platinum rate of recovery 92.6%, palladium recovery rate 94.8%.

Claims (1)

1. the treatment process of a silver anode slime is characterized in that silver anode slime is leached with nitric acid, and the nitric acid leaching condition is a liquid-solid ratio 2~4: 1, nitric acid liquid concentration 20%~30%, 50~70 ℃ of temperature of reaction; Silver, palladium and base metal enter solution, and gold and platinum are stayed in the slag, separate after filtration leached mud and leach liquor; Casting Jinyang pole plate carries out electrolysis after the leached mud roasting removal of impurities, obtains the 1# gold; Electrolytic solution reclaims platinum and handles; Regulate the pH 0.5~2.5 of leach liquor, the mixed precipitant A solution that adds 1~1.4 times of theoretical amount precipitates palladium-selective, and 70~90 ℃ of temperature of reaction obtain heavy palladium slag; Liquid is mainly AgNO behind the heavy palladium 3Solution returns silver-colored electrolysis treatment; Heavy palladium slag aqua regia dissolution after-filtration, filter residue are mainly the AgCl precipitation, obtain thick silver powder with hydrazine hydrate reduction, return the coin silver positive plate; Liquid concentrated also " ammoniumization " obtains (NH behind the aqua regia dissolution 4) 2PdCl 6Precipitation; (NH 4) 2PdCl 6Precipitation obtains Pd (NH behind ammonia dissolving, hcl acidifying 3) 2Cl 2Precipitation obtains purity at the palladium sponge more than 99.9% again after hydrazine hydrate reduction, oven dry; Wherein the filtrate that Chan Shengs is returned concentration process; Above-mentioned ammonia dissolution conditions is 50~70 ℃ of temperature, terminal point pH8~9; Above-mentioned hcl acidifying condition is terminal point pH0.5~1.0.
CN2010106211760A 2010-12-30 2010-12-30 Silver anode mud treatment process Pending CN102041393A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102703708A (en) * 2012-06-19 2012-10-03 姚彦君 Method for extracting gold and silver from electronic wastes
CN102978407A (en) * 2012-12-17 2013-03-20 四会市鸿明贵金属有限公司 Method for recovering platinum from silver electrolyte
CN102994771A (en) * 2011-09-13 2013-03-27 郴州市金贵银业股份有限公司 Method for extracting palladium sponge from silver electrolysis anode slime parting liquid
CN103074501A (en) * 2013-02-22 2013-05-01 昆山鸿福泰环保科技有限公司 Gold net recovery process
CN103233132A (en) * 2013-04-22 2013-08-07 金川集团股份有限公司 Method for removing impurities from gold powder
CN103555937A (en) * 2013-11-07 2014-02-05 铜陵有色金属集团股份有限公司 Platinum refining process based on two-stage sedimentation method
CN103801332A (en) * 2012-11-08 2014-05-21 中国石油化工股份有限公司 Preparation method for sulfuration palladium/alumina catalyst
CN103954524A (en) * 2013-12-11 2014-07-30 西部矿业股份有限公司 Simple and rapid method for accurate determination of silver in lead anode mud
CN104451186A (en) * 2014-12-07 2015-03-25 金川集团股份有限公司 Method for extracting refined gold from palladium-silver-containing anode mud
CN104651615A (en) * 2015-01-28 2015-05-27 昆山全亚冠环保科技有限公司 Method for recovering silver and palladium from waste
CN104726899A (en) * 2014-12-30 2015-06-24 永兴贵研资源有限公司 Method for recycling silver and platinum from platinum-containing silver iodide
CN104846401A (en) * 2015-05-28 2015-08-19 永兴贵研资源有限公司 Method for recovering gold, silver and palladium from silver alloy
CN105567977A (en) * 2016-01-24 2016-05-11 李家元 Method for treating silver anode mud by pyrogenic process
CN106119554A (en) * 2016-08-18 2016-11-16 紫金矿业集团股份有限公司 High Purity Gold the method being enriched with silver, platinum and palladium is prepared from silver anode slime
CN106480477A (en) * 2016-11-21 2017-03-08 郴州市金贵银业股份有限公司 The method for reclaiming silver-colored palladium from silver anode slime parting liquid
CN106636652A (en) * 2016-12-18 2017-05-10 郴州市金贵银业股份有限公司 Technique for efficient and environment-friendly recovery of palladium from sliver anode slime parting liquid
CN108070722A (en) * 2017-12-18 2018-05-25 郴州市金贵银业股份有限公司 A kind of method that valuable metal is recycled in copper ashes of sinking from silver electrolysis mother liquor
CN108342588A (en) * 2018-02-05 2018-07-31 北京工业大学 The method of copper anode mud high acidic oils liquid precious metal separation recycling
WO2019056837A1 (en) * 2017-09-21 2019-03-28 中国科学院过程工程研究所 Clean extraction method for metal silver
CN110172586A (en) * 2019-06-11 2019-08-27 昆山鸿福泰环保科技有限公司 A method of the Recover palladium from stanniferous acid palladium liquid
CN110484747A (en) * 2019-09-02 2019-11-22 湖南省佳川冶金科技有限公司 A kind of technique of the selective extraction palladium from thick silver
CN112458307A (en) * 2020-11-16 2021-03-09 无锡英特派金属制品有限公司 Separation method of platinum-silver alloy
CN112501438A (en) * 2020-10-20 2021-03-16 广东先导稀材股份有限公司 Method for separating and recovering silver and palladium from silver-palladium alloy waste
CN112794544A (en) * 2020-12-08 2021-05-14 深圳市环保科技集团有限公司 Treatment method of high-chlorine palladium-containing wastewater
CN113215405A (en) * 2021-04-23 2021-08-06 郴州百一环保高新材料有限公司 Method for recovering rare and noble metals from waste three-way catalyst
US11319613B2 (en) 2020-08-18 2022-05-03 Enviro Metals, LLC Metal refinement

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
《有色冶炼》 20031231 容智梅 "从金银冶炼系统中回收铂、钯" 第27-29页 1 , 第6期 *
《有色金属(冶炼部分)》 19791231 张维霖 "黄药在铂族金属提取冶金中的应用" 第52-54页 1 , 第1期 *
《湿法冶金》 20030930 蒋志建 "从含钯、铜、银等贵金属废料中回收钯和银" 第155-158页 1 第22卷, 第3期 *

Cited By (36)

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CN102994771A (en) * 2011-09-13 2013-03-27 郴州市金贵银业股份有限公司 Method for extracting palladium sponge from silver electrolysis anode slime parting liquid
CN102994771B (en) * 2011-09-13 2014-03-26 郴州市金贵银业股份有限公司 Method for extracting palladium sponge from silver electrolysis anode slime parting liquid
CN102703708A (en) * 2012-06-19 2012-10-03 姚彦君 Method for extracting gold and silver from electronic wastes
CN103801332A (en) * 2012-11-08 2014-05-21 中国石油化工股份有限公司 Preparation method for sulfuration palladium/alumina catalyst
CN103801332B (en) * 2012-11-08 2016-02-10 中国石油化工股份有限公司 A kind of preparation method of vulcanization type palladium/aluminium oxide catalyst
CN102978407A (en) * 2012-12-17 2013-03-20 四会市鸿明贵金属有限公司 Method for recovering platinum from silver electrolyte
CN102978407B (en) * 2012-12-17 2014-09-03 四会市鸿明贵金属有限公司 Method for recovering platinum from silver electrolyte
CN103074501A (en) * 2013-02-22 2013-05-01 昆山鸿福泰环保科技有限公司 Gold net recovery process
CN103233132A (en) * 2013-04-22 2013-08-07 金川集团股份有限公司 Method for removing impurities from gold powder
CN103555937B (en) * 2013-11-07 2015-08-19 铜陵有色金属集团股份有限公司 Two sections of sedimentations refine platinum technique
CN103555937A (en) * 2013-11-07 2014-02-05 铜陵有色金属集团股份有限公司 Platinum refining process based on two-stage sedimentation method
CN103954524B (en) * 2013-12-11 2017-02-15 西部矿业股份有限公司 Simple and rapid method for accurate determination of silver in lead anode mud
CN103954524A (en) * 2013-12-11 2014-07-30 西部矿业股份有限公司 Simple and rapid method for accurate determination of silver in lead anode mud
CN104451186A (en) * 2014-12-07 2015-03-25 金川集团股份有限公司 Method for extracting refined gold from palladium-silver-containing anode mud
CN104726899A (en) * 2014-12-30 2015-06-24 永兴贵研资源有限公司 Method for recycling silver and platinum from platinum-containing silver iodide
CN104651615A (en) * 2015-01-28 2015-05-27 昆山全亚冠环保科技有限公司 Method for recovering silver and palladium from waste
CN104846401A (en) * 2015-05-28 2015-08-19 永兴贵研资源有限公司 Method for recovering gold, silver and palladium from silver alloy
CN105567977A (en) * 2016-01-24 2016-05-11 李家元 Method for treating silver anode mud by pyrogenic process
CN106119554A (en) * 2016-08-18 2016-11-16 紫金矿业集团股份有限公司 High Purity Gold the method being enriched with silver, platinum and palladium is prepared from silver anode slime
CN106480477A (en) * 2016-11-21 2017-03-08 郴州市金贵银业股份有限公司 The method for reclaiming silver-colored palladium from silver anode slime parting liquid
CN106480477B (en) * 2016-11-21 2018-04-24 郴州市金贵银业股份有限公司 The method that silver-colored palladium is recycled from silver anode slime parting liquid
CN106636652A (en) * 2016-12-18 2017-05-10 郴州市金贵银业股份有限公司 Technique for efficient and environment-friendly recovery of palladium from sliver anode slime parting liquid
CN106636652B (en) * 2016-12-18 2018-06-29 郴州市金贵银业股份有限公司 The technique of efficient green Recover palladium in a kind of parting liquid from silver anode slime
WO2019056837A1 (en) * 2017-09-21 2019-03-28 中国科学院过程工程研究所 Clean extraction method for metal silver
CN108070722B (en) * 2017-12-18 2019-12-13 郴州市金贵银业股份有限公司 Method for recovering valuable metals from copper precipitation slag of silver electrolysis mother liquor
CN108070722A (en) * 2017-12-18 2018-05-25 郴州市金贵银业股份有限公司 A kind of method that valuable metal is recycled in copper ashes of sinking from silver electrolysis mother liquor
CN108342588A (en) * 2018-02-05 2018-07-31 北京工业大学 The method of copper anode mud high acidic oils liquid precious metal separation recycling
CN108342588B (en) * 2018-02-05 2019-12-27 北京工业大学 Method for separating and recovering precious metals from copper anode slime high-acid leaching solution
CN110172586A (en) * 2019-06-11 2019-08-27 昆山鸿福泰环保科技有限公司 A method of the Recover palladium from stanniferous acid palladium liquid
CN110484747A (en) * 2019-09-02 2019-11-22 湖南省佳川冶金科技有限公司 A kind of technique of the selective extraction palladium from thick silver
CN110484747B (en) * 2019-09-02 2020-06-02 湖南省佳川冶金科技有限公司 Process for selectively extracting palladium from crude silver
US11319613B2 (en) 2020-08-18 2022-05-03 Enviro Metals, LLC Metal refinement
CN112501438A (en) * 2020-10-20 2021-03-16 广东先导稀材股份有限公司 Method for separating and recovering silver and palladium from silver-palladium alloy waste
CN112458307A (en) * 2020-11-16 2021-03-09 无锡英特派金属制品有限公司 Separation method of platinum-silver alloy
CN112794544A (en) * 2020-12-08 2021-05-14 深圳市环保科技集团有限公司 Treatment method of high-chlorine palladium-containing wastewater
CN113215405A (en) * 2021-04-23 2021-08-06 郴州百一环保高新材料有限公司 Method for recovering rare and noble metals from waste three-way catalyst

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Application publication date: 20110504