KR940007198A - Separation and purification of cobalt from tool scraps based on cobalt - Google Patents

Separation and purification of cobalt from tool scraps based on cobalt Download PDF

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Publication number
KR940007198A
KR940007198A KR1019920017258A KR920017258A KR940007198A KR 940007198 A KR940007198 A KR 940007198A KR 1019920017258 A KR1019920017258 A KR 1019920017258A KR 920017258 A KR920017258 A KR 920017258A KR 940007198 A KR940007198 A KR 940007198A
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South Korea
Prior art keywords
cobalt
solvent
solvent extraction
acid
aqueous solution
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KR1019920017258A
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Korean (ko)
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KR940007372B1 (en
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김병남
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김병남
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Priority to KR1019920017258A priority Critical patent/KR940007372B1/en
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Publication of KR940007372B1 publication Critical patent/KR940007372B1/en

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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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • 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

Abstract

본 발명은 폐공구등 코발트가 주성분인 코발트 스크랩을 무기산으로 용해시킨후 용액중에 함유된 불순물을 효과적으로 제거하고 용액중의 코발트 성분만을 유기용매로 추출한 순수한 코발트 화합물을 높은 회수율로 회수하는 코발트의 분리, 정제하는 방법에 관한 것이다.The present invention is to dissolve the cobalt scrap, the main component of cobalt, such as waste tools with inorganic acids, to effectively remove impurities contained in the solution, and to remove the cobalt compound obtained by recovering the pure cobalt compound extracted only with the organic solvent in an organic solvent at high recovery rate, It relates to a method of purification.

코발트를 주성분으로 하는 공구 스크랩을 산성 수용액으로 하여 제1단계 용해 추출법으로 코발트, 니켈 및 비금속(Base Metal)을 수용액으로 분리하고, 상기 금속성분 이외의 금속성분은 용매상으로 전이시킨후 강산으로 탈거하고, 제2단계 용매 추출법으로 코발트, 니켈 및 비금속의 수용액중에서 순수한 코발트 성분만을 고수율로 회수할 수 있다.Cobalt, nickel and base metals are separated into an aqueous solution by a first step dissolution extraction method using a cobalt-based tool scrap as an acidic aqueous solution, and metal components other than the metal components are transferred to a solvent phase and then removed with a strong acid. In the second step solvent extraction, only pure cobalt components can be recovered in a high yield in an aqueous solution of cobalt, nickel and nonmetals.

즉, 옥심계 또는 인산계 용매를 사용하여 단계별로 PH를 조정 금속성분을 탈거시켜주는 2단계 용매추출 방법으로 고순도의 코발트화합물을 높은 수율로 회수할 수 있다.That is, the cobalt compound having high purity can be recovered in a high yield by a two-step solvent extraction method in which the oxime-based or phosphate-based solvent is used to remove the pH-adjusted metal component step by step.

Description

코발트를 주성분으로 하는 공구 스크랩으로 부터 코발트를 분리, 정제하는 방법Separation and purification of cobalt from tool scraps based on cobalt

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (7)

코발트를 주성분으로 하는 공구 스크랩을 산성 수용액으로 하여 용매추출법으로 하여 용매추출법으로 코발트 성분을 분리 정제하는 방법에 있어서, 제1단계 용매추출법으로 코발트, 니켈 및 비금속(base metal) 이외의 금속성분은 용매상(溶媒相)으로 전이시킨 후, 강산으로 탈거(Stripping)하고, 나머지 코발트, 니켈 및 비금속을 함유하고 있는 수용액 중 코발트 성분만을 제2단계 용매 추출방법으로 분리 정제하는 방법.In a method of separating and refining a cobalt component by a solvent extraction method using a solvent extraction method using an acidic aqueous solution of a tool scrap mainly composed of cobalt, a metal component other than cobalt, nickel, and a base metal may be a solvent by a first step solvent extraction method. A method of stripping with a strong acid after transferring to a phase and separating and purifying only the cobalt component in an aqueous solution containing the remaining cobalt, nickel, and nonmetals by a second step solvent extraction method. 제1항에 있어서, 제1단계 용매추출법에서 옥심계 또는 인산계 용매를 사용하거나 이들의 혼합용매를 사용하는 방법.The method of claim 1, wherein an oxime or phosphoric acid solvent is used in the first step solvent extraction method or a mixed solvent thereof is used. 제1항에 있어서, 제1단계 용매상의 금속성분을 황산과 염산의 혼산을 사용하여 탈거시키는 방법.The method of claim 1, wherein the metal component of the first step solvent is stripped off using a mixed acid of sulfuric acid and hydrochloric acid. 제1항에 있어서, 제1단계 용매추출 공정의 PH범위가 1.5∼4.0인 방법.The method of claim 1, wherein the PH range of the first step solvent extraction process is 1.5 to 4.0. 제1항에 있어서, 제2단계 용매추출 공정에서 인산계, 아인산계, 차아인산계 용매를 사용하는 방법.The method of claim 1, wherein a phosphoric acid, phosphorous acid, hypophosphorous acid solvent is used in the second step solvent extraction process. 제1항에 있어서, 제2단계 용매추출 공정의 코발트를 포함하는 수용액의 PH 범위가 3.5∼6.5인 방법.The method of claim 1, wherein the pH range of the aqueous solution comprising cobalt in the second solvent extraction process is 3.5 to 6.5. 제1항에 있어서, 제2단계 용매추출 공정을 거쳐 코발트를 추출한 유기용매를 1∼60%의 황산, 1∼60%의 질산 또는 1∼36%의 염산으로 처리 금속성분을 탈거시키는 방법.The method according to claim 1, wherein the organic solvent extracted with cobalt through a second step solvent extraction process is stripped of 1 to 60% sulfuric acid, 1 to 60% nitric acid or 1 to 36% hydrochloric acid. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920017258A 1992-09-22 1992-09-22 Method of purification cobalt KR940007372B1 (en)

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KR1019920017258A KR940007372B1 (en) 1992-09-22 1992-09-22 Method of purification cobalt

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Application Number Priority Date Filing Date Title
KR1019920017258A KR940007372B1 (en) 1992-09-22 1992-09-22 Method of purification cobalt

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KR940007198A true KR940007198A (en) 1994-04-26
KR940007372B1 KR940007372B1 (en) 1994-08-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100817003B1 (en) * 2000-09-29 2008-03-27 소니 가부시끼 가이샤 High purity cobalt, method of manufacturing thereof, and high purity cobalt targets
KR20190070181A (en) * 2017-12-12 2019-06-20 재단법인 포항산업과학연구원 Method for recovering covalt from solution comprising covalt, nickel and iron

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002022898A1 (en) * 2000-09-15 2002-03-21 Commonwealth Scientific And Industrial Research Organisation Separation of cobalt from manganese using organophosphoric acid solvent extraction
AU2001281597B2 (en) * 2001-08-24 2007-06-21 Qni Technology Pty Ltd Organic reagent cleaning
US7837959B2 (en) 2004-09-24 2010-11-23 Commonwealth Scientific And Industrial Research Organisation Synergistic solvent extraction process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100817003B1 (en) * 2000-09-29 2008-03-27 소니 가부시끼 가이샤 High purity cobalt, method of manufacturing thereof, and high purity cobalt targets
KR100860957B1 (en) * 2000-09-29 2008-09-30 소니 가부시끼 가이샤 Method of manufacturing high purity cobalt
KR20190070181A (en) * 2017-12-12 2019-06-20 재단법인 포항산업과학연구원 Method for recovering covalt from solution comprising covalt, nickel and iron

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