EP0265736A3 - Process for leaching noble metals from ores or their concentrates using cyanidic solutions with additions of hydrogen peroxide - Google Patents

Process for leaching noble metals from ores or their concentrates using cyanidic solutions with additions of hydrogen peroxide Download PDF

Info

Publication number
EP0265736A3
EP0265736A3 EP87114714A EP87114714A EP0265736A3 EP 0265736 A3 EP0265736 A3 EP 0265736A3 EP 87114714 A EP87114714 A EP 87114714A EP 87114714 A EP87114714 A EP 87114714A EP 0265736 A3 EP0265736 A3 EP 0265736A3
Authority
EP
European Patent Office
Prior art keywords
cyanidic
ores
concentrates
additions
solutions
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.)
Granted
Application number
EP87114714A
Other languages
German (de)
Other versions
EP0265736B1 (en
EP0265736A2 (en
Inventor
Helmut Dr. Knorre
Andrew Dr. Griffiths
Jurgen Dr. Lorosch
Joachim Fischer
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
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 Degussa GmbH filed Critical Degussa GmbH
Publication of EP0265736A2 publication Critical patent/EP0265736A2/en
Publication of EP0265736A3 publication Critical patent/EP0265736A3/en
Application granted granted Critical
Publication of EP0265736B1 publication Critical patent/EP0265736B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C22B11/00—Obtaining noble metals
    • C22B11/08—Obtaining noble metals by cyaniding

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP87114714A 1986-10-31 1987-10-08 Process for leaching noble metals from ores or their concentrates using cyanidic solutions with additions of hydrogen peroxide Expired - Lifetime EP0265736B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3637082A DE3637082C1 (en) 1986-10-31 1986-10-31 Process for leaching precious metals from ores or ore concentrates using cyanide solutions with the addition of hydrogen peroxide
DE3637082 1986-10-31

Publications (3)

Publication Number Publication Date
EP0265736A2 EP0265736A2 (en) 1988-05-04
EP0265736A3 true EP0265736A3 (en) 1990-01-24
EP0265736B1 EP0265736B1 (en) 1992-01-15

Family

ID=6312868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114714A Expired - Lifetime EP0265736B1 (en) 1986-10-31 1987-10-08 Process for leaching noble metals from ores or their concentrates using cyanidic solutions with additions of hydrogen peroxide

Country Status (13)

Country Link
US (1) US5275791A (en)
EP (1) EP0265736B1 (en)
AR (1) AR240177A1 (en)
BR (1) BR8705756A (en)
CA (1) CA1331518C (en)
DE (1) DE3637082C1 (en)
DO (1) DOP1987004572A (en)
ES (1) ES2027674T3 (en)
MX (1) MX169904B (en)
NZ (1) NZ222354A (en)
PH (1) PH24130A (en)
PT (1) PT86035B (en)
ZA (1) ZA876329B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3801741C1 (en) * 1988-01-22 1989-06-15 Degussa Ag, 6000 Frankfurt, De
GB8810736D0 (en) * 1988-05-06 1988-06-08 Interox Chemicals Ltd Heap leaching
US5250272A (en) * 1988-09-09 1993-10-05 Degussa Aktiengesellschaft Process for leaching precious metals with hydrogen-peroxide and a cyanide leaching solution
DE3830703C1 (en) * 1988-09-09 1990-03-22 Degussa Ag, 6000 Frankfurt, De
BR9001538A (en) * 1989-04-04 1991-04-23 Interox Chemicals Ltd GOLD AND / OR SILVER EXTRACTION PROCESS
ZA903216B (en) * 1989-04-28 1991-02-27 Cra Services Improving recovery of precious metals
DE4017899C1 (en) * 1990-06-02 1991-11-14 Degussa Ag, 6000 Frankfurt, De Extn. of silver and gold from ores - by contacting ore with aq. leaching soln. contg. cyanide in presence of peroxo:borate, and sepg. cyano complexes formed
DE4323251A1 (en) * 1993-07-12 1995-01-19 Degussa Method and apparatus for continuously determining the concentration of hydrogen peroxide and oxidizing agents therefor
CA2367651C (en) * 2001-03-13 2009-05-26 Her Majesty The Queen In Right Of Canada, As Represented By The Minist Of Natural Resources Canada Control of lead nitrate addition in gold recovery
RU2460814C1 (en) * 2011-04-13 2012-09-10 Открытое акционерное общество "Ведущий научно-исследовательский институт химической технологии" Method for gold extraction from cyanide solutions with dissolved mercury contained in them
RU2458160C1 (en) * 2011-04-26 2012-08-10 Открытое акционерное общество "Ведущий научно-исследовательский институт химической технологии" Method of gold extraction from mercury-containing cyanic solutions
CN102505079A (en) * 2011-12-30 2012-06-20 中矿金业股份有限公司 Method for pretreating gold ore concentrate prior to cyanide leaching
WO2013110420A1 (en) * 2012-01-27 2013-08-01 Evonik Degussa Gmbh Enrichment of metal sulfide ores by oxidant assisted froth flotation
CN103243222B (en) * 2013-04-24 2014-04-09 中南大学 Modified lime sulphur and application thereof in gold leaching technology
RU2557024C2 (en) * 2013-12-02 2015-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Забайкальский государственный университет" (ФГБОУ ВПО "ЗабГУ") Method for heap leaching of gold from ores
CN104232908B (en) * 2014-09-17 2017-04-12 河南省岩石矿物测试中心 Method for recovering gold from gold-containing mercury smelting tailings
CN104911371B (en) * 2015-04-30 2017-08-25 上海圣的新材料有限公司 One kind proposes golden agent and preparation method thereof
RU2624751C1 (en) * 2016-04-11 2017-07-06 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Method of cyanic leaching of gold and silver
CN110546129A (en) 2017-04-26 2019-12-06 索尔维公司 Reducing the content of carboxylic acids and derivatives thereof in oleum, pyrosulfuric acid or concentrated sulfuric acid

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826723A (en) * 1972-07-13 1974-07-30 Elmet Inc Process for recovering gold and silver
US4578163A (en) * 1984-12-03 1986-03-25 Homestake Mining Company Gold recovery process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US732605A (en) * 1902-11-18 1903-06-30 Gustav E Thede Process of leaching ores.
US4421724A (en) * 1981-09-08 1983-12-20 Anglo Mineral Resources, Inc. Extraction method for refractory precious metal ore
CA1221842A (en) * 1983-06-03 1987-05-19 Arthur E. Coburn Treatment of ores
DE3801741C1 (en) * 1988-01-22 1989-06-15 Degussa Ag, 6000 Frankfurt, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826723A (en) * 1972-07-13 1974-07-30 Elmet Inc Process for recovering gold and silver
US4578163A (en) * 1984-12-03 1986-03-25 Homestake Mining Company Gold recovery process

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CANADIAN MINING JOURNAL, Band 88, August 1967, Seiten 55-60, National Business Publications Ltd, Gardenvale, CA; E.L. DAY: "Some factors influencing the rate of dissolution of gold in sodium cyanide solutions" *
HYDROMETALLURGY, Band 16, Nr. 3, August 1986, Seiten 395-400, Elsevier Science Publishers B.V., Amsterdam, NL; R.M. GARCIA: "The recovery of silver from photographic film: a study of the leaching reaction with cyanide solution for industrial use" *

Also Published As

Publication number Publication date
EP0265736B1 (en) 1992-01-15
AU589818B2 (en) 1989-10-19
DOP1987004572A (en) 1998-12-05
AU8053387A (en) 1988-05-05
PT86035A (en) 1987-11-01
US5275791A (en) 1994-01-04
PH24130A (en) 1990-03-05
EP0265736A2 (en) 1988-05-04
NZ222354A (en) 1989-09-27
MX169904B (en) 1993-07-30
ES2027674T3 (en) 1992-06-16
AR240177A1 (en) 1990-02-28
BR8705756A (en) 1988-05-31
PT86035B (en) 1990-08-31
DE3637082C1 (en) 1988-05-19
CA1331518C (en) 1994-08-23
ZA876329B (en) 1988-03-29

Similar Documents

Publication Publication Date Title
EP0265736A3 (en) Process for leaching noble metals from ores or their concentrates using cyanidic solutions with additions of hydrogen peroxide
DE3164884D1 (en) Process for the extraction of precious metals from concentrates thereof
GR1002301B (en) Noble metals recuperation
ZA8871B (en) Thermophilic microbial treatment of precious metal ores
EP0175556A3 (en) Process for the pressure oxidation leaching of non-ferrous metal containing sulphidic material
ZA867040B (en) Heap leaching with oxygen
ZW16185A1 (en) Recovery of gold from refractory auriferous iron-containing sulphidic concentrates
PH23578A (en) Process for the recovery of noble metals from ore concentrates
AU6222586A (en) Leaching precious metals using N-Halonydanton
ZA89137B (en) Process for leaching gold and/or silver from ores or ore concentrates and from noble-metal waste or noble-metal scrap by using cyanide-containing leaching solutions
ES464869A1 (en) Process for recovering silver and gold from chloride solutions
ZA827168B (en) Simultaneous leaching and electrodeposition of precious metals
YU58378A (en) Process for the extraction of metals from ores and metal sufides containing concentrates
EP0358004A3 (en) Process for leaching noble metals using cyanidic solutions with hydrogen peroxide
GB2181722B (en) Method for the recovery of precious metals from ores
AP9000185A0 (en) Dissolving platinum group metals from ores & concentrates
ZW18188A1 (en) Process for leaching gold and/or silver from ore concentrates and from noble-metal waste or noble-metal scrap by using cyanide containing leaching solutions
PT81258B (en) Process for recovering zinc from ores and concentrates
AU589818C (en) A process for leaching noble metals from ores or ore concentrates using cyanide-containing solutions with addition of hydrogen peroxide
ZA851489B (en) Process for hydrometallurgical extraction of precious metals
ZA871399B (en) Extractions of metal values from ores or concentrates
AU556833B2 (en) Saturation of cyanide leach solution with oxygen prior to leaching metals from ground ore
PL261041A3 (en) Method of recovering metals from anode slimes reach with lead
PT78061B (en) Process for recovering lead and precious metals from residues of the ustulation of ores and mettalurgic sub-products
AU7918687A (en) Recovery of lead, zinc and other metals from ores concentrates or residues

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19871008

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): ES FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): ES FR GB

17Q First examination report despatched

Effective date: 19910529

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): ES FR GB

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2027674

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20041012

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20061023

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20061030

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20071009

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20071007

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20071009