DE543304C - Lyes of precious metals - Google Patents

Lyes of precious metals

Info

Publication number
DE543304C
DE543304C DE1930543304D DE543304DD DE543304C DE 543304 C DE543304 C DE 543304C DE 1930543304 D DE1930543304 D DE 1930543304D DE 543304D D DE543304D D DE 543304DD DE 543304 C DE543304 C DE 543304C
Authority
DE
Germany
Prior art keywords
precious metals
lyes
gold
thiourea
leaching
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE1930543304D
Other languages
German (de)
Inventor
Dr Heinrich Gockel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of DE543304C publication Critical patent/DE543304C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G7/00—Compounds of gold
    • C01G7/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • 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
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/16—Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
    • C22B3/1608—Leaching with acyclic or carbocyclic agents
    • C22B3/1616—Leaching with acyclic or carbocyclic agents of a single type
    • 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

Landscapes

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

Description

Laugen von Edelmetallen Zum Auslaugen von Erzen, die Edelmetalle, besonders Gold, enthalten, werden Lösungen von Cvannatrium oder Cyankaliutn benutzt (sogenannte Cyanidlaugerei).Leaching of precious metals For leaching ores, the precious metals, solutions of cyan sodium or cyanide potassium are used, especially if they contain gold (so-called cyanide leaching).

Es wurde nun gefunden, daß man in diesen Prozessen an Stelle der giftigen Cvansalze Lösungen von Thioharnstoff und seiner wasserlöslichen Derivate, wie Methylthioharnstoff, anwenden kann.It has now been found that in these processes, instead of the poisonous Cvan salts solutions of thiourea and its water-soluble derivatives, such as methylthiourea, can apply.

Der Gebrauch des völlig ungiftigen Thioliarnstoffs an Stelle der äußerst giftigen Cyansalze bedeutet eine erhebliche Erleichterung in den in Betracht kommenden L augereiprozessen. B e i s p i e 1 : i kg gemahlenes Erz, in dem ro mg gediegenes Gold enthalten sind, werden mit einer i°/oigen wäßrigen schwachsauren Lösung von Thioharnstoff ausgelaugt. Aus der Lösung wird das Gold nach bekannten Verfahren ausgeschieden.The use of the completely non-toxic thiolar in place of the extremely poisonous cyan salts means a considerable relief in those in question L uring processes. Example 1: 1 kg of ground ore in which ro mg of solid Gold are contained with a 10% aqueous weakly acidic solution of Thiourea leached. The gold is made from the solution using known processes eliminated.

Claims (1)

PATENTANSPRUCH: Verfahren zum Laugen von Edelmetallen, besonders von Gold, aus diese enthaltenden Erzen, dadurch gekennzeichnet, daß wäßrige angesäuerte Lösungen von Thioharnstoff oder seinen wasserlöslichen Derivaten als Laugen benutzt werden.PATENT CLAIM: Process for leaching precious metals, especially of Gold, from ores containing them, characterized in that aqueous acidified Solutions of thiourea or its water-soluble derivatives are used as alkalis will.
DE1930543304D 1930-05-01 1930-05-01 Lyes of precious metals Expired DE543304C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE543304T 1930-05-01

Publications (1)

Publication Number Publication Date
DE543304C true DE543304C (en) 1932-02-04

Family

ID=6559996

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930543304D Expired DE543304C (en) 1930-05-01 1930-05-01 Lyes of precious metals

Country Status (1)

Country Link
DE (1) DE543304C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2746661A1 (en) * 1976-10-19 1978-04-20 Mines Fond Zinc Vieille METHOD FOR RECOVERING PRECIOUS METALS FROM A SOLID STARTING MATERIAL
FR2557141A1 (en) * 1983-12-27 1985-06-28 Sueddeutsche Kalkstickstoff PROCESS FOR OBTAINING PRECIOUS METALS
EP0257548A1 (en) * 1986-08-26 1988-03-02 Noranda Inc. Process for the recovery of silver from zinc plant calcines and neutral or low acid leach residues with thiourea

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2746661A1 (en) * 1976-10-19 1978-04-20 Mines Fond Zinc Vieille METHOD FOR RECOVERING PRECIOUS METALS FROM A SOLID STARTING MATERIAL
FR2368546A1 (en) * 1976-10-19 1978-05-19 Mines Fond Zinc Vieille PROCESS FOR RECOVERING PRECIOUS METALS FROM MATERIALS IN CONTAINER
FR2557141A1 (en) * 1983-12-27 1985-06-28 Sueddeutsche Kalkstickstoff PROCESS FOR OBTAINING PRECIOUS METALS
EP0257548A1 (en) * 1986-08-26 1988-03-02 Noranda Inc. Process for the recovery of silver from zinc plant calcines and neutral or low acid leach residues with thiourea

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