UST104001I4 - Method for recovering gold from refractory ores - Google Patents
Method for recovering gold from refractory ores Download PDFInfo
- Publication number
- UST104001I4 UST104001I4 US06/536,222 US53622283A UST104001I4 US T104001 I4 UST104001 I4 US T104001I4 US 53622283 A US53622283 A US 53622283A US T104001 I4 UST104001 I4 US T104001I4
- Authority
- US
- United States
- Prior art keywords
- ore
- gold
- ores
- refractory ores
- maintaining
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G7/00—Compounds of gold
-
- 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
- C22B11/04—Obtaining noble metals by wet 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A process for pretreating refractory ores improves the recovery of gold from such ores upon subsequent cyanidation. After comminuting the ore and forming an aqueous slurry, the ore is subjected to pressurized oxidation at an elevated temperature. By adjusting the pH to below about 1.85 and maintaining the pressure and temperature above 300 psig and 160° C., respectively, very high recovery of gold can be achieved. Additionally, by maintaining a preselected soluble iron concentration in the slurry, the oxidation of the ore is promoted and proceeds at a more rapid rate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/536,222 UST104001I4 (en) | 1982-02-16 | 1983-09-26 | Method for recovering gold from refractory ores |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US34914982A | 1982-02-16 | 1982-02-16 | |
US06/536,222 UST104001I4 (en) | 1982-02-16 | 1983-09-26 | Method for recovering gold from refractory ores |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US34914982A Continuation | 1982-02-16 | 1982-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
UST104001I4 true UST104001I4 (en) | 1984-03-06 |
Family
ID=26996051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/536,222 Pending UST104001I4 (en) | 1982-02-16 | 1983-09-26 | Method for recovering gold from refractory ores |
Country Status (1)
Country | Link |
---|---|
US (1) | UST104001I4 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4979987A (en) * | 1988-07-19 | 1990-12-25 | First Miss Gold, Inc. | Precious metals recovery from refractory carbonate ores |
US5256189A (en) * | 1992-05-20 | 1993-10-26 | Prime Resources Group Inc. | Aqueous oxidation of sulfidic silver ore |
US5320720A (en) * | 1993-01-05 | 1994-06-14 | Prime Resources Group Inc. | Extraction of precious metals from ores thereof |
US5489326A (en) * | 1994-10-04 | 1996-02-06 | Barrick Gold Corporation | Gold recovery using controlled oxygen distribution pressure oxidation |
US20070217285A1 (en) * | 2006-03-17 | 2007-09-20 | Barrick Gold Corporation | Autoclave with underflow dividers |
US20070292326A1 (en) * | 2006-06-15 | 2007-12-20 | Barrick Gold Corporation | Process for reduced alkali consumption in the recovery of silver |
US20100024603A1 (en) * | 2004-12-22 | 2010-02-04 | Placer Dome Technical Services Ltd. | Reduction of lime consumption when treating refractory gold ores or concentrates |
-
1983
- 1983-09-26 US US06/536,222 patent/UST104001I4/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4979987A (en) * | 1988-07-19 | 1990-12-25 | First Miss Gold, Inc. | Precious metals recovery from refractory carbonate ores |
US5256189A (en) * | 1992-05-20 | 1993-10-26 | Prime Resources Group Inc. | Aqueous oxidation of sulfidic silver ore |
US5320720A (en) * | 1993-01-05 | 1994-06-14 | Prime Resources Group Inc. | Extraction of precious metals from ores thereof |
US5489326A (en) * | 1994-10-04 | 1996-02-06 | Barrick Gold Corporation | Gold recovery using controlled oxygen distribution pressure oxidation |
US20100024603A1 (en) * | 2004-12-22 | 2010-02-04 | Placer Dome Technical Services Ltd. | Reduction of lime consumption when treating refractory gold ores or concentrates |
US8029751B2 (en) | 2004-12-22 | 2011-10-04 | Placer Dome Technical Services Limited | Reduction of lime consumption when treating refractory gold ores or concentrates |
US20070217285A1 (en) * | 2006-03-17 | 2007-09-20 | Barrick Gold Corporation | Autoclave with underflow dividers |
US8061888B2 (en) | 2006-03-17 | 2011-11-22 | Barrick Gold Corporation | Autoclave with underflow dividers |
US20070292326A1 (en) * | 2006-06-15 | 2007-12-20 | Barrick Gold Corporation | Process for reduced alkali consumption in the recovery of silver |
US8252254B2 (en) | 2006-06-15 | 2012-08-28 | Barrick Gold Corporation | Process for reduced alkali consumption in the recovery of silver |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |