CN1096057A - Quick-cyaniding gold-extracting method in autoclave - Google Patents
Quick-cyaniding gold-extracting method in autoclave Download PDFInfo
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- CN1096057A CN1096057A CN 94102432 CN94102432A CN1096057A CN 1096057 A CN1096057 A CN 1096057A CN 94102432 CN94102432 CN 94102432 CN 94102432 A CN94102432 A CN 94102432A CN 1096057 A CN1096057 A CN 1096057A
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- gold
- cyaniding
- autoclave
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Abstract
A kind of quick-cyaniding gold-extracting method in autoclave relates to a kind of novel process of carrying gold.Its method is at first the gold mine slurry to be sent to autoclave to carry out the hot-pressure oxidation pre-treatment, and then soaks gold and handle.Operating condition is: temperature is 100-140 degree, and oxygen partial pressure is 0.2-0.5 MPa, and liquid-solid ratio is 3: 1, and sodium hydroxide is that 140-260 kilograms/tons, sodium cyanide are 0.5-3.0 kilograms/tons, and hot pressing time is 6-8 hours, and soaking the gold time is 1-10 minutes.Its advantage is to have shortened golden cyaniding extraction time, gold leaching rate height, is easy to solid-liquid separation, has reduced facility investment and initial cost.
Description
The invention belongs to metallurgical technology field, relate to a kind of novel process of carrying gold.
At present, the cyanidation gold-extracted technology of the common employing in home and abroad, be under normal temperature, normal pressure, to carry out, the cyaniding extraction time of gold often reaches 24 hours, cause cyaniding equipment huge, particularly to some unmanageable ores, after processing is given in alkaline hot pressing cyaniding, slurry temperature is often higher, if adopt conventional cyaniding slurry temperature to be reduced to the degree that is suitable for conventional cyaniding by methods such as flash distillation and heat exchanges, the factor that these numerous and diverse processes make high temperature and oxygen pressure etc. help cyaniding can not utilized.
The purpose of this invention is to provide a kind of Gold Ore hot-pressure oxidation and give processing direct cyaniding gold-extracting method under high temperature, high pressure effect.
This method is as follows:
1, gold mine slurry is sent to autoclave and carries out hot-pressure oxidation and give processing, its heat pressing operation condition is: temperature is the 100-140 degree, and oxygen partial pressure is that 0.2-0.5 MPa, liquid-solid ratio are 2-4: 1, sodium hydroxide is that 140-260 kilogram/ton, time are 6-8 hour.
2, the ore pulp adding sodium cyanide that hot pressing is given processing soaks gold, and its cyaniding operating condition is: temperature is the 100-140 degree, and oxygen partial pressure is that 0.2-0.5 MPa, liquid-solid ratio are 2-4: 1, sodium cyanide is that 0.5-3.0 kilogram/ton, time are 1-10 minute.
The ore pulp that soaks behind the gold is discharged outside the still, through solid-liquid separation, discard and soak slag, contain golden liquid and be sent to golden recovery zone and handle.
Advantage of the present invention is: because cyaniding temperature height has shortened golden cyaniding extraction time greatly under the effect of oxygen, and the gold leaching rate height, the ore pulp speed after leaching is fast, is easy to solid-liquid separation, and aftertreatment is easy, has reduced facility investment and initial cost.
Fig. 1 is that hot-pressure oxidation gives the cyanidation gold-extracted process flow sheet of processing.
Embodiment:
1, gold mine slurry is sent to autoclave and carries out hot-pressure oxidation and give processing, its heat pressing operation condition is: temperature is that 140 degree, oxygen partial pressure are that 0.5 MPa, liquid-solidization are that 3: 1, sodium hydroxide are that 170 kilograms/ton, time are 8 hours.
2, give ore pulp after handling through hot-pressure oxidation and add sodium cyanide and soak gold, its cyaniding operating condition is: temperature be 140 spend, oxygen partial pressure is that 0.5 MPa, liquid-solid ratio are that 3: 1, sodium cyanide are that 2 kilograms/ton, time are 5 minutes.
Soak ore pulp behind the gold discharge still outer, through solid-liquid separation, discard and soak slag, contain golden liquid and be sent to golden recovery zone and handle.
Claims (1)
1, a kind of quick-cyaniding gold-extracting method in autoclave, its method is:
A, gold mine slurry is sent to autoclave carries out hot-pressure oxidation and give processing, its heat pressing operation condition is: temperature is the 100-140 degree, and oxygen partial pressure is that 0.2-0.5 MPa, liquid-solid ratio are 2-4: 1, sodium hydroxide is that 140-260 kilogram/ton, time are 6-8 hour;
B, the ore pulp that processing is given in hot pressing add sodium cyanide and soak gold, and its cyaniding operating condition is: temperature is the 100-140 degree, and oxygen partial pressure is that 0.2-0.5 MPa, liquid-solid ratio are 2-4: 1, sodium cyanide is that 0.5-3.0 kilogram/ton, time are 1-10 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94102432A CN1034675C (en) | 1994-03-25 | 1994-03-25 | Quick-cyaniding gold-extracting method in autoclave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94102432A CN1034675C (en) | 1994-03-25 | 1994-03-25 | Quick-cyaniding gold-extracting method in autoclave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1096057A true CN1096057A (en) | 1994-12-07 |
| CN1034675C CN1034675C (en) | 1997-04-23 |
Family
ID=5030649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94102432A Expired - Fee Related CN1034675C (en) | 1994-03-25 | 1994-03-25 | Quick-cyaniding gold-extracting method in autoclave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034675C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051809C (en) * | 1995-07-06 | 2000-04-26 | 青岛大学 | Gold extracting method by recovery |
| WO2008141443A1 (en) | 2007-05-18 | 2008-11-27 | Cominco Engineering Services Ltd. | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
| CN102127653A (en) * | 2010-11-29 | 2011-07-20 | 长春黄金研究院 | Process for extracting gold by modified pressure oxidation-cyaniding |
| CN104593583A (en) * | 2014-12-24 | 2015-05-06 | 中国科学院地球化学研究所 | Wet-process preprocessing method of carlin type refractory leaching gold ore |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4188208A (en) * | 1978-05-22 | 1980-02-12 | Newmont Exploration Limited | Recovery of gold from carbonaceous gold-bearing ores |
| CA1234291A (en) * | 1984-09-27 | 1988-03-22 | Donald R. Weir | Recovery of gold from auriferous refractory iron- containing sulphidic material |
-
1994
- 1994-03-25 CN CN94102432A patent/CN1034675C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051809C (en) * | 1995-07-06 | 2000-04-26 | 青岛大学 | Gold extracting method by recovery |
| WO2008141443A1 (en) | 2007-05-18 | 2008-11-27 | Cominco Engineering Services Ltd. | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
| CN101715493A (en) * | 2007-05-18 | 2010-05-26 | 塞瑟尔有限公司 | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
| EP2160480A4 (en) * | 2007-05-18 | 2010-12-29 | Cesl Ltd | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
| US8025859B2 (en) | 2007-05-18 | 2011-09-27 | Cesl Limited | Process for gold and silver recovery from a sulphide concentrate |
| CN101715493B (en) * | 2007-05-18 | 2012-10-10 | 塞瑟尔有限公司 | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
| EP2540846A3 (en) * | 2007-05-18 | 2013-11-13 | CESL Limited | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
| CN102127653A (en) * | 2010-11-29 | 2011-07-20 | 长春黄金研究院 | Process for extracting gold by modified pressure oxidation-cyaniding |
| CN104593583A (en) * | 2014-12-24 | 2015-05-06 | 中国科学院地球化学研究所 | Wet-process preprocessing method of carlin type refractory leaching gold ore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1034675C (en) | 1997-04-23 |
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