WO2008036820A3 - Method for oxidizing carbonaceous ores to facilitate precious metal recovery - Google Patents

Method for oxidizing carbonaceous ores to facilitate precious metal recovery Download PDF

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Publication number
WO2008036820A3
WO2008036820A3 PCT/US2007/079039 US2007079039W WO2008036820A3 WO 2008036820 A3 WO2008036820 A3 WO 2008036820A3 US 2007079039 W US2007079039 W US 2007079039W WO 2008036820 A3 WO2008036820 A3 WO 2008036820A3
Authority
WO
WIPO (PCT)
Prior art keywords
precious metal
metal recovery
carbonaceous ores
oxidizing
carbonaceous
Prior art date
Application number
PCT/US2007/079039
Other languages
French (fr)
Other versions
WO2008036820A2 (en
Inventor
James Tranquilla
Original Assignee
Hw Advanced Technologies Inc
James Tranquilla
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 Hw Advanced Technologies Inc, James Tranquilla filed Critical Hw Advanced Technologies Inc
Publication of WO2008036820A2 publication Critical patent/WO2008036820A2/en
Publication of WO2008036820A3 publication Critical patent/WO2008036820A3/en

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
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C22B1/10—Roasting processes in fluidised form
    • 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
    • C22B11/02—Obtaining noble metals by dry processes
    • 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
    • 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
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/22—Remelting metals with heating by wave energy or particle radiation
    • C22B9/221—Remelting metals with heating by wave energy or particle radiation by electromagnetic waves, e.g. by gas discharge lamps
    • C22B9/225—Remelting metals with heating by wave energy or particle radiation by electromagnetic waves, e.g. by gas discharge lamps by microwaves

Abstract

A method of oxidizing carbonaceous ores to assist in the recovery of metals is provided. The method includes the steps of heating a bed of carbonaceous ore in the reaction chamber of a reactor vessel, using microwave energy to initiate and sustain oxidation of the carbonaceous ore within the bed into carbon dioxide, controlling the inflow of oxygen into the reaction chamber to provide sufficient oxygen to maintain the reaction C + O2 = CO2, and monitoring the depletion of carbon from the carbonaceous ore.
PCT/US2007/079039 2006-09-20 2007-09-20 Method for oxidizing carbonaceous ores to facilitate precious metal recovery WO2008036820A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82634606P 2006-09-20 2006-09-20
US60/826,346 2006-09-20

Publications (2)

Publication Number Publication Date
WO2008036820A2 WO2008036820A2 (en) 2008-03-27
WO2008036820A3 true WO2008036820A3 (en) 2008-06-12

Family

ID=39201271

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/079039 WO2008036820A2 (en) 2006-09-20 2007-09-20 Method for oxidizing carbonaceous ores to facilitate precious metal recovery

Country Status (2)

Country Link
US (1) US20080069723A1 (en)
WO (1) WO2008036820A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008036817A2 (en) * 2006-09-20 2008-03-27 Hw Advanced Technologies, Inc. Method and apparatus for microwave induced pyrolysis of arsenical ores and ore concentrates
WO2008036824A1 (en) * 2006-09-20 2008-03-27 Hw Advanced Technologies, Inc. A method and means for using microwave energy to oxidize sulfidic copper ore into a prescribed oxide-sulfate product
MX2013011323A (en) * 2011-04-01 2013-10-17 Smidth As F L System and process for the continuous recovery of metals.
CN102758079B (en) * 2012-07-25 2013-12-18 福建省双旗山矿业有限责任公司 Energy-saving optimizing technology for microwave roasting and non-cyanogen gold leaching of sulfur-bearing gold mineral
WO2014105944A1 (en) * 2012-12-28 2014-07-03 Flsmidth A/S Use of enzymes for recovering a metal from a metal-containing ore
CN103937964B (en) * 2014-04-28 2016-06-15 南华大学 A kind of containing gold sulfur arsenic concentrate microwave calcining gold extracting method
US20230077051A1 (en) * 2021-09-02 2023-03-09 Nevada Gold Mines LLC Multi-staged high temperature pressure oxidation process for double refractory precious metal-containing materials
PL440757A1 (en) * 2022-03-25 2023-10-02 Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie Method for recovering Pt, Pd, Rh, Au from highly diluted aqueous solutions and system for recovering Pt, Pd, Rh, Au from highly dilute aqueous solutions

Citations (2)

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Publication number Priority date Publication date Assignee Title
US5626647A (en) * 1992-09-22 1997-05-06 Geobiotics, Inc. Method for recovering gold and other precious metals from carbonaceous ores
US6143139A (en) * 1992-04-01 2000-11-07 The United States Of America As Represented By The United States Department Of Energy Method for recovering metals from waste

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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6143139A (en) * 1992-04-01 2000-11-07 The United States Of America As Represented By The United States Department Of Energy Method for recovering metals from waste
US5626647A (en) * 1992-09-22 1997-05-06 Geobiotics, Inc. Method for recovering gold and other precious metals from carbonaceous ores

Also Published As

Publication number Publication date
WO2008036820A2 (en) 2008-03-27
US20080069723A1 (en) 2008-03-20

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