SE9103692D0 - PRESSURE OXIDIZATION METHODS FOR EXTRACTION OF GOLD AND TREATMENT OF TOXIC WASTE - Google Patents
PRESSURE OXIDIZATION METHODS FOR EXTRACTION OF GOLD AND TREATMENT OF TOXIC WASTEInfo
- Publication number
- SE9103692D0 SE9103692D0 SE9103692A SE9103692A SE9103692D0 SE 9103692 D0 SE9103692 D0 SE 9103692D0 SE 9103692 A SE9103692 A SE 9103692A SE 9103692 A SE9103692 A SE 9103692A SE 9103692 D0 SE9103692 D0 SE 9103692D0
- Authority
- SE
- Sweden
- Prior art keywords
- gold
- toxic
- methods
- mixture
- extraction
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 6
- 239000010891 toxic waste Substances 0.000 title abstract 4
- 238000000605 extraction Methods 0.000 title abstract 3
- 238000007254 oxidation reaction Methods 0.000 title abstract 2
- 239000000203 mixture Substances 0.000 abstract 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 4
- 239000010931 gold Substances 0.000 abstract 4
- 229910052737 gold Inorganic materials 0.000 abstract 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 3
- 239000005864 Sulphur Substances 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 231100000331 toxic Toxicity 0.000 abstract 3
- 230000002588 toxic effect Effects 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000012141 concentrate Substances 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 1
- 229910052785 arsenic Inorganic materials 0.000 abstract 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 abstract 1
- 239000000356 contaminant Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 231100000419 toxicity Toxicity 0.000 abstract 1
- 230000001988 toxicity Effects 0.000 abstract 1
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
-
- 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
- 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)
- Treatment Of Sludge (AREA)
Abstract
PRESSURE OXIDATION METHODS FOR GOLD EXTRACTION AND TOXIC WASTE TREATMENT The present invention provides methods for extracting gold from refractory auriferous material, such as a gold-containing ore, a concentrate thereof, a reclaimed sulphide concentrate or some combination thereof, including the steps of mixing the refractory auriferous material with at least one toxic residue exhibiting a low sulphur content to form a low sulphur content mixture; pressure oxidizing the mixture; and cyaniding the oxidized mixture. Methods for extracting gold while simultaneously decreasing the toxicity of previously generated toxic wastes are also discussed. The gold extraction/toxic waste treatment methods preferably involve mixing refractory auriferous material with first and second toxic residues of low sulphur content; pressure oxidizing the mixture; and cyaniding the oxidized mixture. In these methods, contaminants in the toxic residues (e.g., iron and arsenic) combine with each other or with other feed components to form inert molecules having a decreased environmental impact.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2032357 CA2032357A1 (en) | 1990-12-14 | 1990-12-14 | Pressure oxidation methods for gold extraction and toxic waste treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE9103692D0 true SE9103692D0 (en) | 1991-12-13 |
| SE9103692L SE9103692L (en) | 1992-06-15 |
Family
ID=4146660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9103692A SE9103692L (en) | 1990-12-14 | 1991-12-13 | PRESSURE OXIDIZATION METHODS FOR EXTRACTION OF GOLD AND TREATMENT OF TOXIC WASTE |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU649750B2 (en) |
| CA (1) | CA2032357A1 (en) |
| MX (1) | MX9102549A (en) |
| SE (1) | SE9103692L (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PE20180808A1 (en) | 2015-07-06 | 2018-05-09 | Sherritt Int Corporation | COPPER RECOVERY FROM A PROCESS FEED CONTAINING ARSENIC |
| PE20191621A1 (en) | 2017-04-14 | 2019-11-06 | Sherritt Int Corporation | LOW SOLID, LOW ACID, PRESSURIZED OXIDATIVE LEACHING OF SULFURED FEED MATERIALS |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1228483A (en) * | 1984-09-19 | 1987-10-27 | Donald R. Weir | Process for the pressure oxidation acid leaching of non-ferrous metal and iron-containing sulphidic material |
| CA1234991A (en) * | 1984-09-27 | 1988-04-12 | Donald R. Weir | Recovery of gold from auriferous refractory iron- containing sulphidic ore |
| US4729788A (en) * | 1987-01-23 | 1988-03-08 | Advanced Mineral Technologies, Inc. | Thermophilic microbial treatment of precious metal ores |
-
1990
- 1990-12-14 CA CA 2032357 patent/CA2032357A1/en not_active Abandoned
-
1991
- 1991-12-05 AU AU88888/91A patent/AU649750B2/en not_active Ceased
- 1991-12-13 SE SE9103692A patent/SE9103692L/en not_active Application Discontinuation
- 1991-12-13 MX MX9102549A patent/MX9102549A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MX9102549A (en) | 1992-06-01 |
| AU649750B2 (en) | 1994-06-02 |
| AU8888891A (en) | 1992-06-18 |
| CA2032357A1 (en) | 1992-06-15 |
| SE9103692L (en) | 1992-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
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