WO2012151028A1 - Procédé de récupération de métaux de base - Google Patents

Procédé de récupération de métaux de base Download PDF

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Publication number
WO2012151028A1
WO2012151028A1 PCT/US2012/032687 US2012032687W WO2012151028A1 WO 2012151028 A1 WO2012151028 A1 WO 2012151028A1 US 2012032687 W US2012032687 W US 2012032687W WO 2012151028 A1 WO2012151028 A1 WO 2012151028A1
Authority
WO
WIPO (PCT)
Prior art keywords
sqas
metals
metal
solution
recovery
Prior art date
Application number
PCT/US2012/032687
Other languages
English (en)
Inventor
Joseph L. Thomas
Original Assignee
Metals Recovery Technology Inc., A Delaware Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metals Recovery Technology Inc., A Delaware Corporation filed Critical Metals Recovery Technology Inc., A Delaware Corporation
Publication of WO2012151028A1 publication Critical patent/WO2012151028A1/fr

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Classifications

    • 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
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • 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

Definitions

  • the field of the present invention is processes for the separation of base metals.
  • Solvent extraction and/or ion exchange are regularly used for such separations.
  • Other chemical processes of precipitation and volatilization may be used in conjunction with solvent extraction and/or ion exchange. Typically, these processes are used to remove selected elements from the mother liquid or to purify metals of insufficient purity.
  • the present invention is directed to a process for the recovery and purification of selected base metals
  • base metals as used herein excludes precious and noble metals as those terms are used in the field of chemistry.
  • Base metals specifically includes but is not limited to Co, Cu, Fe, Ni, Pb, Se, Te, and Zn.
  • SQAS substituted quaternary ammonium salts
  • SQAS substituted quaternary ammonium salts
  • a process for the recovery of base metals comprises selectively separating at least one of a plurality of metals in a solution by precipitating the at least one metal using SQAS and removing the precipitate from the solution.
  • the metal(s) selectively separated may be capable of forming an anionic complex.
  • the at least one metal includes one or both of Pb+4, Fe+3 and one or more of lower valent metals Ni, Se, Zn, separation being in a solution in 6N HCI and SQAS.
  • the at least one metal includes Te and Se, separation being in a solution in 6N HCI and SQAS.
  • the at least one metal includes Ni and Co, separation being in a solution with SQAS with increasing acid concentration.
  • the at least one metal includes Cu+2, Zn+2, Co+2 forming anionic complexes, separation being in methanol with SQAS.
  • the at least one metal includes Co+2 forming anionic complexes, separation from Ni being in methanol with SQAS.
  • SQAS Substituted quaternary ammonium salts
  • metals are precipitated with SQAS.
  • Metal recovery and refining includes processes of heating, cooling, precipitation, dissolution, oxidation and reduction of SQAS complexes.
  • Metal- SQAS precipitation is accomplished in all cases discussed, typically after cooling of a solution. Precipitates are physically separated from filtrates by filtration, centrifugation, evaporation or other suitable method. Many separable metals can remain in the filtrate in certain of the processes. In specific instances, metal- SQAS precipitates form in organic solvents such as alcohols, while they do not form in aqueous solvent.
  • Nickel-Cobalt separations are likewise very difficult. However, since nickel does not form anionic complexes, it is not precipitated by SQAS. Cobalt is precipitated by SQAS and solubility decreases as acid concentration increases.
  • SQAS is contemplated to separate many types of metals as shown by the examples below. Although we cannot attest to any particular theorem, recovery and purification of metals utilizing SQAS appears to reduce inherent constraints imposed by thermodynamic and kinetic properties of metal in solution that have long defied resolution.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un procédé de récupération de métaux de base choisis à partir d'une solution, lequel procédé comprend la précipitation sélective de métaux à partir de la solution à l'aide de sels d'ammonium quaternaire substitués (SQAS). Un SQAS est généralement représenté par la formule H0-3 R4-1 NX, où H = hydrogène, R = groupe organique, N = azote et X = halogénure. Une précipitation sélective pour une séparation emploie une variation dans les solvants organiques, le chauffage, le refroidissement, l'oxydation, le pH et la réduction de complexes de SQAS.
PCT/US2012/032687 2011-05-03 2012-04-09 Procédé de récupération de métaux de base WO2012151028A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201161481887P 2011-05-03 2011-05-03
US61/481,887 2011-05-03
US201261609687P 2012-03-12 2012-03-12
US61/609,687 2012-03-12

Publications (1)

Publication Number Publication Date
WO2012151028A1 true WO2012151028A1 (fr) 2012-11-08

Family

ID=47107994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/032687 WO2012151028A1 (fr) 2011-05-03 2012-04-09 Procédé de récupération de métaux de base

Country Status (1)

Country Link
WO (1) WO2012151028A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107261A (en) * 1975-11-07 1978-08-15 Pgp Industries Inc. Process for the separation of platinum group metals
US4331634A (en) * 1978-01-17 1982-05-25 Matthey Rustenburg Refiners (Pty) Limited Solvent extraction process for the selective extraction of palladium
US4442074A (en) * 1982-09-24 1984-04-10 Chevron Research Company Recovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by serial extraction of nickel and cobalt and coextracting molybdenum and vanadium
US4726841A (en) * 1985-07-04 1988-02-23 Grant Richard A Extraction of metals
US20040200782A1 (en) * 2002-02-07 2004-10-14 Singh Waheguru Pal Extraction of metals with diquaternary ammonium salts
US20040251188A1 (en) * 2003-06-10 2004-12-16 Skinner Charles E. Immoblized alkylated amine functional macromolecules, alkylated ammonium salt functional macromolecules, and alkylated quaternary ammonium salt functional macromolecules, process for their preparation and methods for their use
US20050066774A1 (en) * 2003-09-26 2005-03-31 Sumitomo Metal Mining Co., Ltd. Process for mutual separation of platinum group metals
US20090272229A1 (en) * 2008-05-05 2009-11-05 Dos Santos Jose Roberto Chemical process for recovery of metals contained in industrial steelworks waste
US7935173B1 (en) * 2010-07-23 2011-05-03 Metals Recovery Technology Inc. Process for recovery of precious metals

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107261A (en) * 1975-11-07 1978-08-15 Pgp Industries Inc. Process for the separation of platinum group metals
US4331634A (en) * 1978-01-17 1982-05-25 Matthey Rustenburg Refiners (Pty) Limited Solvent extraction process for the selective extraction of palladium
US4442074A (en) * 1982-09-24 1984-04-10 Chevron Research Company Recovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by serial extraction of nickel and cobalt and coextracting molybdenum and vanadium
US4726841A (en) * 1985-07-04 1988-02-23 Grant Richard A Extraction of metals
US20040200782A1 (en) * 2002-02-07 2004-10-14 Singh Waheguru Pal Extraction of metals with diquaternary ammonium salts
US7175818B2 (en) * 2002-02-07 2007-02-13 Lynntech, Inc. Extraction of metals with diquaternary ammonium salts
US20040251188A1 (en) * 2003-06-10 2004-12-16 Skinner Charles E. Immoblized alkylated amine functional macromolecules, alkylated ammonium salt functional macromolecules, and alkylated quaternary ammonium salt functional macromolecules, process for their preparation and methods for their use
US20050066774A1 (en) * 2003-09-26 2005-03-31 Sumitomo Metal Mining Co., Ltd. Process for mutual separation of platinum group metals
US20090272229A1 (en) * 2008-05-05 2009-11-05 Dos Santos Jose Roberto Chemical process for recovery of metals contained in industrial steelworks waste
US7935173B1 (en) * 2010-07-23 2011-05-03 Metals Recovery Technology Inc. Process for recovery of precious metals

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