CN102534204A - Thiosulfate gold extraction method taking Fe (III) cyanide salts as oxidants - Google Patents
Thiosulfate gold extraction method taking Fe (III) cyanide salts as oxidants Download PDFInfo
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- CN102534204A CN102534204A CN2012100557069A CN201210055706A CN102534204A CN 102534204 A CN102534204 A CN 102534204A CN 2012100557069 A CN2012100557069 A CN 2012100557069A CN 201210055706 A CN201210055706 A CN 201210055706A CN 102534204 A CN102534204 A CN 102534204A
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- iii
- iron
- gold
- prussiate
- salt
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000010931 gold Substances 0.000 title claims abstract description 51
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 51
- -1 Fe (III) cyanide salts Chemical class 0.000 title claims abstract description 23
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 title abstract 5
- 238000000605 extraction Methods 0.000 title abstract 2
- 239000007800 oxidant agent Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 34
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000001238 wet grinding Methods 0.000 claims abstract description 8
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 claims description 24
- BYGOPQKDHGXNCD-UHFFFAOYSA-N tripotassium;iron(3+);hexacyanide Chemical compound [K+].[K+].[K+].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] BYGOPQKDHGXNCD-UHFFFAOYSA-N 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- DCXPBOFGQPCWJY-UHFFFAOYSA-N trisodium;iron(3+);hexacyanide Chemical compound [Na+].[Na+].[Na+].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCXPBOFGQPCWJY-UHFFFAOYSA-N 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 238000002386 leaching Methods 0.000 abstract description 20
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 238000011112 process operation Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- PODWXQQNRWNDGD-UHFFFAOYSA-L sodium thiosulfate pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O PODWXQQNRWNDGD-UHFFFAOYSA-L 0.000 description 16
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical class N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- XOCUXOWLYLLJLV-UHFFFAOYSA-N [O].[S] Chemical compound [O].[S] XOCUXOWLYLLJLV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- NIAGBSSWEZDNMT-UHFFFAOYSA-M tetraoxidosulfate(.1-) Chemical compound [O]S([O-])(=O)=O NIAGBSSWEZDNMT-UHFFFAOYSA-M 0.000 description 1
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a thiosulfate gold extraction method taking Fe (III) cyanide salts as oxidants. The method comprises the following steps: crushing and wet milling golden placer or mineral; adding solutions of Fe (III) cyanide salts, thiosulfate, and thiocarbamide into the ore pulp so as to ensure that in the whole system, the concentration of the thiosulfate is 0.01 to 2 mol/dm<3>, the concentration of the Fe (III) cyanide salts is 0.1 to 1.0 mmol/dm<3>, and the concentration of the thiocarbamide is 0.001 to 10.0 mmol/dm<3>; adjusting the pH value of the system to be 8 to 13; stirring and leaching for 9 to 24 hours; and recycling gold in the leachate according to a conventional method. The method has the advantages that the leaching rate is high; the process operation is simple and easy to control; the consumption of thiosulfate is low; the ingredients of the golden leachate are simple, so as to facilitate the recycling of gold; the application range is wide; and the purpose of environmental protection is realized.
Description
Technical field
The invention belongs to the hydrometallurgy field; Relating to a kind of employing thiosulphate for carrying gold reagent, is oxygenant extracts gold from ore method with iron (
) prussiate salt.
Background technology
Cyanide process is the main method that present gold extracts.Yet sodium cyanide is hypertoxic chemical, and the sodium cyanide that remains in the tailing dam produces some toxic cyanide and can cause serious environmental problem with soaking in the golden process, and some countries and regions have forbidden in gold extracts, using prussiate for this reason.In addition, cyanide process is difficult to handle to complicated gold mines such as cupric carbon containings.Substitute in the reagent at prussiate that recent researches is crossed, thiosulphate is considered to replace the method that has application prospect most of cyanide process with its characteristics such as quick, nontoxic.In order to improve the golden speed of soaking, a lot of bibliographical informations will add copper (
) ion in thiosulfate solution, ammoniacal liquor is formed the leach liquor that mixing solutions extracts as gold.Yet, in the presence of ammoniacal copper complex ion, soaking in the golden process thiosulphate consumption and sharply rise, it is too high that reagent consumes excessive cost, golden leach liquor complicated component simultaneously, the gold that causes getting in the leach liquor is difficult to efficient recovery.Many researchers adopts to add sulfate radical and reagent such as inferior sulfate radical and sulfonium ion, inflated with nitrogen reduction dissolved oxygen or do not have cuprammonium and exists methods such as adopting the pressurization leaching down to carry out big quantity research in the hope of the consumption of reduction reagent; These methods have played certain effect on control thiosulphate consumption; But energy consumption height or complex manufacturing still are difficult to realize scale operation.Also have some bibliographical informations to use oxalate, YD 30 (EDTA) salt to be additive; Thiosulphate consumption is soaked in the golden process in reduction also played certain effect; But need strict control pH value between 4.2～6.4; The pH value is lower than 4.2 o'clock thiosulphates and is decomposed into elemental sulfur and sulfurous gas, and the pH value is higher than at 6.4 o'clock has ferric hydroxide colloid or deposition to generate.
Summary of the invention
The present invention is directed to Cu
2+-NH
3-S
2O
3 2-Mix big, the leaching system complicacy of gold leachate reagent consumption in soaking golden process; Propose a kind of new thiosulphate and soak golden method; Promptly adopting iron (III) the cyanide ligand ion that stability is better, oxidizing potential is higher is oxygenant; With thiosulfate anion is golden complexing agent, and to add a small amount of thiocarbamide be that leaching agent is formed gold leachate and extracted the gold in the ore, realizes through following technical proposal.
A kind of is the thiosulfate gold extracting method of oxygenant with iron (III) prussiate salt; Process the following step: broken wet-milling to fineness-200 order of auriferous placer or rock ore deposit is accounted for 85～95%; The mass concentration of regulating ore pulp is 30～50%; In ore pulp, add solution, thiosulphate and the thiocarbamide of iron (III) prussiate salt again, the concentration that makes thiosulphate in the whole system is 0.01～2mol/dm
3, iron (III) prussiate salt concentration 0.1～1.0mmol/dm
3, thiocarbamide concentration be 0.001～10.0mmol/dm
3, the pH value of regulation system is 8～13 then, and agitation leach 9～24 hours, reclaims the gold in the leach liquor by ordinary method at last.
Said iron (III) prussiate salt is the Tripotassium iron hexacyanide or the Trisodium hexacyanoferrate.
The solution of said iron (III) prussiate salt is that iron (III) prussiate salt is water-soluble, and being mixed with the pH value is the solution more than 9.
The pH value of said regulation system is 8～13 to be to use alkali to regulate, like sodium hydroxide, Pottasium Hydroxide.
Said thiosulphate is the salt that contains thiosulfate anion.
Thiosulfate gold extracting method provided by the invention has following advantage and effect:
(1) reagent consumption is low, adopts Cu for copper gold
2+-NH
3-S
2O
3 2-The leaching system, the thiosulphate consumption is up to 20～30kg/t ore; And adopt the consumption of present method thiosulphate can reduce to below the 7kg/t ore.
(2) the pH variation is little to gold leaching influence, general Cu
2+-NH
3-S
2O
3 2-The leaching system pH require to be controlled at about 10, pH is too high, gold leaching rate significantly reduces; And system pH of the present invention is at 8～13 o'clock, and gold leaching rate and thiosulphate consumption all do not have big variation, need not the pH value that leaches system is done accuracy controlling, applicable to scale operation.
(3) golden leaching velocity is fast, and sample ore flexibility is strong, all can effectively handle cupric, carbon containing gold mine.
(4) golden leach liquor component is simple; Because the consumption of thiosulphate is less; Can not produce a large amount of polythionic acid roots and other oxygen sulfur compound; And the associated metal under the alkaline condition in the gold mine can not dissolve basically with other impurity such as Fe etc. and get into golden leach liquor, helps the recovery of gold in the golden leach liquor, and the lean solution that reclaims gold is easy to recycle.
Adopt method provided by the invention from ore, to extract gold, gold leaching rate is high, and technological operation is simple; Be easy to control, the thiosulphate consumption is low, and golden leach liquor composition simply helps the wherein recovery of gold; Applied widely; PH has good leaching effect between 8～13, fast for cyanide process difficult-treating gold mines such as carbon containing, cupric gold leaching velocity, and can keep quite high gold leaching rate.The whole free cyanogen that does not use severe toxicity in the golden process of carrying is followed ion (CN
-), do not discharge free cyanogen with ion (CN yet
-) wait hypertoxic refuse, environmentally friendly.
Embodiment
Through embodiment the present invention is done below and further describe.
Embodiment 1
Broken wet-milling to fineness-200 order of placer that the Qinghai gold mine is contained golden 2.45g/t, cupric 0.18%, sulfur-bearing 0.28% accounts for 90%; The mass concentration of regulating ore pulp is 50%; In ore pulp, add solution, Sulfothiorine and the thiocarbamide of pH value greater than 9 the Tripotassium iron hexacyanide again, the concentration that makes Sulfothiorine in the whole system is 0.01mol/dm
3, the Tripotassium iron hexacyanide concentration 0.1mmol/dm
3, thiocarbamide concentration be 0.001mmol/dm
3, the pH value of regulation system is 11 then, and agitation leach 9 hours, reclaims the gold in the leach liquor by ordinary method at last.
Gold leaching rate is 87.3%, and the consumption of Sulfothiorine is the 3.3kg/t ore; And with cuprammonium during as additive, the Sulfothiorine consumption is the 18.5kg/t ore.
Embodiment 2
Broken wet-milling to fineness-200 order of certain gold floatation concentrate that will contain 198.2g/t, cupric 23.1%, sulfur-bearing 6.5% accounts for 95%; The mass concentration of regulating ore pulp is 30%; In ore pulp, add the pH value again and be solution, Sulfothiorine and the thiocarbamide of 10 the Trisodium hexacyanoferrate, the concentration that makes Sulfothiorine in the whole system is 2mol/dm
3, the Trisodium hexacyanoferrate concentration 1.0mmol/dm
3, thiocarbamide concentration be 10.0mmol/dm
3, the pH value of using the sodium hydroxide regulation system then is 8, and agitation leach 24 hours, reclaims the gold in the leach liquor by ordinary method at last.
Gold leaching rate is 80.5%, and the consumption of Sulfothiorine is the 4.65kg/t ore; And with cuprammonium during as additive, the Sulfothiorine consumption is the 29.6kg/t ore.
Embodiment 3
Broken wet-milling to fineness-200 order of certain gold ore that will contain golden 49.4g/t, cupric 2.4% accounts for 95%; The mass concentration of regulating ore pulp is 40%; In ore pulp, add the pH value again and be solution, Sulfothiorine and the thiocarbamide of 11 the Tripotassium iron hexacyanide, the concentration that makes Sulfothiorine in the whole system is 1mol/dm
3, the Tripotassium iron hexacyanide concentration 0.5mmol/dm
3, thiocarbamide concentration be 5mmol/dm
3, the pH value of using the Pottasium Hydroxide regulation system then is 13, and agitation leach 24 hours, reclaims the gold in the leach liquor by ordinary method at last.
Gold leaching rate asks 85.3%, and the consumption of Sulfothiorine is the 5.1kg/t ore; And with cuprammonium during as additive, the Sulfothiorine consumption is the 30.8kg/t ore.
Embodiment 4
Broken wet-milling to fineness-200 order in Burma gold mine rock ore deposit that will contain golden 32.1g/t, cupric 1.8% accounts for 95%; The mass concentration of regulating ore pulp is 40%; In ore pulp, add the pH value again and be solution, Sulfothiorine and the thiocarbamide of 11 the Tripotassium iron hexacyanide, the concentration that makes Sulfothiorine in the whole system is 0.5mol/dm
3, the Tripotassium iron hexacyanide concentration 0.1mmol/dm
3, thiocarbamide concentration be 1.0mmol/dm
3, the pH value of regulation system is 10 then, and agitation leach 20 hours, reclaims the gold in the leach liquor by ordinary method at last.
Gold leaching rate is 87.2%, and the consumption of Sulfothiorine is the 4.53kg/t ore; And with cuprammonium during as additive, the Sulfothiorine consumption is the 27.3kg/t ore.
Embodiment 5
Broken wet-milling to fineness-200 order of gold mine that contains that will contain golden 2.1g/t, cupric 0.31%, carbon containing 0.81% accounts for 85%; The mass concentration of regulating ore pulp is 40%; In ore pulp, add the pH value again and be solution, ammonium thiosulfate and the thiocarbamide of 9 the Trisodium hexacyanoferrate, the concentration that makes ammonium thiosulfate in the whole system is 0.1mol/dm
3, the Trisodium hexacyanoferrate concentration 0.1mmol/dm
3, thiocarbamide concentration be 0.01mmol/dm
3, the pH value of using the sodium hydroxide regulation system then is 10, and agitation leach 9 hours, reclaims the gold in the leach liquor by ordinary method at last.
Gold leaching rate is 89.4%, and the ammonium thiosulfate consumption is the 6.84kg/t ore; And with cuprammonium during as additive, the ammonium thiosulfate consumption is the 18.3kg/t ore.
Claims (4)
1. one kind is the thiosulfate gold extracting method of oxygenant with iron (III) prussiate salt; It is characterized in that through the following step: broken wet-milling to fineness-200 order of auriferous placer or rock ore deposit is accounted for 85～95%; The mass concentration of regulating ore pulp is 30～50%; In ore pulp, add solution, thiosulphate and the thiocarbamide of iron (III) prussiate salt again, the concentration that makes thiosulphate in the whole system is 0.01～2mol/dm
3, iron (III) prussiate salt concentration 0.1～1.0mmol/dm
3, thiocarbamide concentration be 0.001～10.0mmol/dm
3, the pH value of regulation system is 8～13 then, and agitation leach 9～24 hours, reclaims the gold in the leach liquor by ordinary method at last.
2. according to claim 1 is the thiosulfate gold extracting method of oxygenant with iron (III) prussiate salt, and it is characterized in that: said iron (III) prussiate salt is the Tripotassium iron hexacyanide or the Trisodium hexacyanoferrate.
3. according to claim 1 and 2 is the thiosulfate gold extracting method of oxygenant with iron (III) prussiate salt; It is characterized in that: the solution of said iron (III) prussiate salt is that iron (III) prussiate salt is water-soluble, and being mixed with the pH value is the solution more than 9.
4. according to claim 1 and 2 is the thiosulfate gold extracting method of oxygenant with iron (III) prussiate salt, it is characterized in that: the pH value of said regulation system is 8～13 to be to use alkali to regulate.
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|---|---|---|---|
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|---|---|---|---|
| CN201210055706.9A CN102534204B (en) | 2012-03-06 | 2012-03-06 | Thiosulfate gold extraction method taking Fe (III) cyanide salts as oxidants |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276206A (en) * | 2013-06-09 | 2013-09-04 | 中南大学 | Method for leaching gold in alkaline thiourea system efficiently and stably |
| CN104549147A (en) * | 2014-12-23 | 2015-04-29 | 昆明理工大学 | Preparation method and application of activated carbon for recycling gold |
| CN108130428A (en) * | 2017-12-22 | 2018-06-08 | 中国科学院过程工程研究所 | The method that gold and silver is extracted from ore |
| CN109280767A (en) * | 2018-12-17 | 2019-01-29 | 招金矿业股份有限公司 | A method of reducing Cymag consumption in refined gold ore cyaniding leaching process |
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| CN109280767A (en) * | 2018-12-17 | 2019-01-29 | 招金矿业股份有限公司 | A method of reducing Cymag consumption in refined gold ore cyaniding leaching process |
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