CN102978393A - Method for comprehensively recovering valuable elements in copper-containing gold ores - Google Patents
Method for comprehensively recovering valuable elements in copper-containing gold ores Download PDFInfo
- Publication number
- CN102978393A CN102978393A CN2012104321695A CN201210432169A CN102978393A CN 102978393 A CN102978393 A CN 102978393A CN 2012104321695 A CN2012104321695 A CN 2012104321695A CN 201210432169 A CN201210432169 A CN 201210432169A CN 102978393 A CN102978393 A CN 102978393A
- Authority
- CN
- China
- Prior art keywords
- copper
- charcoal
- treatment process
- reduction
- gold
- 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
-
- 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
Abstract
The invention relates to a method for comprehensively recovering valuable elements in copper-containing gold ores, and especially relates to a method for comprehensively recovering copper and gold in high-copper gold oxide ores. The method comprises the following steps: carrying out high-cyanide and high-alkali carbon leaching of the copper-containing gold ores, reducing the obtained carbon leaching lean solution to recover copper, and returning the copper removed solution to the high-cyanide and high-alkali carbon leaching step. Compared with the prior art, the method, which allows the valuable metal elements comprising gold and copper to be effectively recovered from the gold ores through adopting the efficient high-cyanide and high-alkali carbon leaching against the disadvantages existing in a background technology, has the advantages of manure technology, easy industrialization and strong adaptation capability to ores.
Description
Technical field
The present invention relates to copper gold and comprehensively reclaim valuable element gold copper, especially high cupric (3-5%) oxidation gold mine comprehensive recovery of gold copper is significant.
Background technology
In the prior art, cupric oxidation gold mine generally adopts sour preimpregnation copper, soaks the copper ashes cyaniding and reclaims gold, and this technique is relatively ripe, technical process is long, reagent cost is high, especially will consume a large amount of acid to containing the higher ore of basic gangue but exist, but also may bring filtration to wait series of problems; The conventional cyanidation method, leaching yield is low, produces easily the high-copper charcoal, greatly increases the subsequent smelting cost.
Summary of the invention
It is long that the present invention mainly overcomes existing treatment technology ubiquity technical process, the high in cost of production shortcoming.
Based on this thinking, the present invention adopts following technical scheme:
Step 1, cyanogen, alkali, charcoal soak: add prussiate and alkali, stirring reaction in the oxidized ore; Charcoal soaks end, filters, and washing, washings is for subsequent use;
Copper is reclaimed in step 2, reduction: charcoal soaks lean solution reduction, stirring reaction in the step 1; Reduction reaction is complete, filters, and washs for subsequent use;
Step 3, return leaching: liquid returns cyanogen, alkali, charcoal and soaks system after the reduction.
Wherein, step 1 to three repeats more than 5 times at least.
Wherein, described alkali can be unslaked lime, caustic soda etc.
Wherein, during the high-alkali charcoal of high cyanogen soaked, gold mine raw ore gold grade was greater than 3g/t, and copper is less than 5%.
Wherein, during the high-alkali charcoal of high cyanogen soaked, free sodium cyanide concentration leached pH greater than 1000ppm〉11, charcoal extraction time 24-72 hour, pulp density 25-45%, charcoal density 10-30g/L;
Wherein, reduction decopper(ing) reagent is Sodium Pyrosulfite, and purity is more than 98%;
Wherein, the Sodium Pyrosulfite consumption is theoretical 1.1-1.5 times;
Wherein, Sodium Pyrosulfite reduction temperature 20-60 ℃;
Wherein, 1-8 hour Sodium Pyrosulfite recovery time, reducing slag contains copper grade greater than 15%.
Described as can be known by foregoing invention, the present invention is directed to the drawback that background technology exists, adopt the high-alkali charcoal of high cyanogen soak-charcoal soaks the drawback that lean solution Sodium Pyrosulfite reducing process exists in can fine solution conventional process, need not to consume a large amount of acid, and the leaching yield of gold is high, do not produce the high-copper charcoal, and comprehensive recovery part valuable metal copper.
Embodiment
Embodiment 1
External certain copper gold (Au 4.27g/t, Cu0.74%) 1kg, pulp density 40%, feed preparation unit size-200 order is greater than 90.0%, pH value 11.20 (lime consumption 6kg/t), and sodium cyanide keeps 1000ppm, charcoal density 15g/L, stir or roller bottle Cyanide Leaching 48h, cyanidation tailings gold copper grade is respectively 0.48g/t and 0.44%, and slag meter gold copper leaching rate is respectively 89.31% and 41.84%.Charcoal soaks lean solution copper 1872mg/L, Sodium Pyrosulfite 10g/L reduction 4 hours, and the copper deposition rate surpasses 95%, and heavy copper ashes copper grade is 15.48%.Liquid returned leaching after reduction was processed, and circulated 7 times, and gold loaded carbon gold, copper grade are respectively 1050g/t and 4556g/t.
Embodiment 2
External certain copper gold (Au 3.62g/t, Cu0.70%) 1kg, pulp density 40%, feed preparation unit size-200 order is greater than 90.0%, pH value 11.20 (lime consumption 6kg/t), and sodium cyanide keeps 1000ppm, charcoal density 10g/L, stir or roller bottle Cyanide Leaching 24h, cyanidation tailings gold copper grade is respectively 0.36g/t and 0.42%, and slag meter gold copper leaching rate is respectively 90.05% and 38.85%.Charcoal soaks lean solution copper 1580mg/L, Sodium Pyrosulfite 8g/L reduction 5 hours, and the copper deposition rate surpasses 96%, and heavy copper ashes copper grade is 14.50%.Liquid returned leaching after reduction was processed, and circulated 9 times, and gold loaded carbon gold, copper grade are respectively 1105g/t and 6325g/t.
Embodiment 3
Domestic certain copper gold (Au4.49g/t, Cu0.73%) 1kg, pulp density 40%, feed preparation unit size-200 order is greater than 90.0%, pH value 11.20 (lime consumption 6kg/t), and sodium cyanide keeps 1000ppm, charcoal density 20g/L, stir or roller bottle Cyanide Leaching 24h, cyanidation tailings gold copper grade is respectively 0.62g/t and 0.43%, and slag meter gold copper leaching rate is respectively 86.19% and 40.85%.Charcoal soaks lean solution copper 1743mg/L, Sodium Pyrosulfite 20g/L reduction 8 hours, and the copper deposition rate surpasses 98%, and heavy copper ashes copper grade is 16.80%.Liquid returned leaching after reduction was processed, and circulated 8 times, and gold loaded carbon gold, copper grade are respectively 1258g/t and 3870g/t.
Claims (9)
1. a copper gold comprehensively reclaims the treatment process of valuable element, it is characterized in that comprising the steps:
Step 1, cyanogen, alkali, charcoal soak: add prussiate and alkali, stirring reaction in the oxidized ore; Charcoal soaks end, filters, and washing, washings is for subsequent use;
Copper is reclaimed in step 2, reduction: charcoal soaks lean solution reduction, stirring reaction in the step 1; Reduction reaction is complete, filters, and washs for subsequent use;
Step 3, return leaching: liquid returns cyanogen, alkali, charcoal and soaks system after the reduction.
2. a kind of copper gold according to claim 1 comprehensively reclaims the treatment process of valuable element, it is characterized in that: step 1 to three repeats 5 times at least.
3. a kind of copper gold according to claim 1 comprehensively reclaims the treatment process of valuable element, it is characterized in that: the copper gold gold grade is greater than 3g/t in the described step 1, and copper is less than 5%.
4. a kind of copper gold according to claim 1 comprehensively reclaims the treatment process of valuable element, it is characterized in that: during the high-alkali charcoal of high cyanogen soaks in the described step 1, free sodium cyanide concentration is greater than 1000ppm, leach pH〉11, charcoal extraction time 24-72 hour, pulp density 25-45%, charcoal density 5-30g/L.
5. a kind of copper gold according to claim 1 comprehensively reclaims the treatment process of valuable element, it is characterized in that: reduction decopper(ing) reagent is Sodium Pyrosulfite in the described step 2, and purity is more than 98%.
6. a kind of copper gold according to claim 5 comprehensively reclaims the treatment process of valuable element, it is characterized in that: pyrosulphite sodium reduction amount is theoretical consumption 1.1-1.5 times in the described step 2.
7. a kind of copper gold according to claim 5 comprehensively reclaims the treatment process of valuable element, it is characterized in that: the Sodium Pyrosulfite reduction temperature is 20-60 ℃ in the described step 2.
8. a kind of copper gold according to claim 5 comprehensively reclaims the treatment process of valuable element, it is characterized in that: the 1-8 hour Sodium Pyrosulfite recovery time in the described step 2.
9. a kind of copper gold according to claim 5 comprehensively reclaims the treatment process of valuable element, it is characterized in that: the Sodium Pyrosulfite reducing slag contains copper grade greater than 15% in the described step 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104321695A CN102978393A (en) | 2012-10-31 | 2012-10-31 | Method for comprehensively recovering valuable elements in copper-containing gold ores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104321695A CN102978393A (en) | 2012-10-31 | 2012-10-31 | Method for comprehensively recovering valuable elements in copper-containing gold ores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102978393A true CN102978393A (en) | 2013-03-20 |
Family
ID=47852727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104321695A Pending CN102978393A (en) | 2012-10-31 | 2012-10-31 | Method for comprehensively recovering valuable elements in copper-containing gold ores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102978393A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194614A (en) * | 2013-03-22 | 2013-07-10 | 紫金矿业集团股份有限公司 | Low-grade copper-bearing gold ore dump leaching-carbon adsorption production method |
| CN104120275A (en) * | 2014-06-18 | 2014-10-29 | 厦门紫金矿冶技术有限公司 | Ammonia-cyanide selective gold extraction method for copper-containing oxidized gold ore |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285126A (en) * | 2008-06-05 | 2008-10-15 | 长春黄金研究院 | Gold extraction process with low pollution and high recovery for refractory gold concentrate |
| CN101717862A (en) * | 2009-11-20 | 2010-06-02 | 湖南铠通金属有限公司 | Production process for comprehensively recovering valuable metal of copper, cobalt and iron alloy |
-
2012
- 2012-10-31 CN CN2012104321695A patent/CN102978393A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285126A (en) * | 2008-06-05 | 2008-10-15 | 长春黄金研究院 | Gold extraction process with low pollution and high recovery for refractory gold concentrate |
| CN101717862A (en) * | 2009-11-20 | 2010-06-02 | 湖南铠通金属有限公司 | Production process for comprehensively recovering valuable metal of copper, cobalt and iron alloy |
Non-Patent Citations (1)
| Title |
|---|
| 杨海贤: ""氰化条件对浸铜渣中金银浸出率的影响研究"", 《新乡师范高等专科学校学报》, vol. 20, no. 5, 30 September 2006 (2006-09-30), pages 32 - 33 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194614A (en) * | 2013-03-22 | 2013-07-10 | 紫金矿业集团股份有限公司 | Low-grade copper-bearing gold ore dump leaching-carbon adsorption production method |
| CN103194614B (en) * | 2013-03-22 | 2015-10-21 | 紫金矿业集团股份有限公司 | The method that a kind of low-grade copper gold dump leaching-charcoal absorption is produced |
| CN104120275A (en) * | 2014-06-18 | 2014-10-29 | 厦门紫金矿冶技术有限公司 | Ammonia-cyanide selective gold extraction method for copper-containing oxidized gold ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100591783C (en) | Method for recovering zinc and lead from waste electrolytic anode mud | |
| CN101818250B (en) | Method for processing cobalt-copper-iron alloy | |
| CN102676837A (en) | Method for recycling palladium from silver electrolyte by using dimethylglyoxime | |
| CN101876005A (en) | Method for extracting aurum from difficult-to-handle sulphide ore aurum concentrate by two-segment pressurization leaching method | |
| US9175411B2 (en) | Gold and silver extraction technology | |
| CN103937973B (en) | A kind of method of Organic-inorganic composite reducing pyrolusite | |
| CN102409171B (en) | New process for treating vulcanized gold-containing ore | |
| CN103014357A (en) | Method for recovering arsenic from arsenic soot | |
| CN102690957B (en) | Method for extracting gold from copper-containing gold oxide ore | |
| CN109971962B (en) | Treatment process for copper, mercury, selenium, lead and gold and silver in copper smelting lead filter cake | |
| CN107326179B (en) | Method for recovering polymetallic from complex antimony-containing gold ore | |
| CN104109762B (en) | Environment-friendly nontoxic gold extractant, and preparation method and gold extraction method thereof | |
| CN101307463A (en) | Method for producing electrolytic manganese metal by replacing partial ammonia water with manganese dregs for neutralization deironing | |
| CN104046776A (en) | Process for recovering valuable metals from high-iron alloys | |
| CN116716484B (en) | Method for recovering palladium and dimethylglyoxime from palladium-refining palladium-removing slag | |
| CN102978393A (en) | Method for comprehensively recovering valuable elements in copper-containing gold ores | |
| CN103451432A (en) | Method for extracting lead and precious metals from dead catalysts containing precious metals | |
| CN110684902B (en) | Process for extracting noble metal by silver capture of high-alumina oil catalyst | |
| CN108950232B (en) | Method for green recovery of palladium from palladium-containing waste | |
| CN104120275B (en) | A kind of cupric gold oxide ores ammonia cyanogen selectivity puies forward the method for gold | |
| CN104229893A (en) | Complete-wet-method production technology for producing ammonium molybdate from nickel-molybdenum ore | |
| CN102061383A (en) | Selective copper removing method for high-copper gold loaded carbon | |
| CN104263941B (en) | A kind of technique of comprehensively recovering valuable metal from electroplating sludge | |
| CN102517452A (en) | Method for recovering gold from gold-containing tail liquid produced by gold-loaded carbon desorption and electrodeposition technology | |
| CN102010990A (en) | Method for leaching nickel molybdenum associated ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130320 |