CN113337721A - Process for recovering gold and silver from smelting furnace slag - Google Patents
Process for recovering gold and silver from smelting furnace slag Download PDFInfo
- Publication number
- CN113337721A CN113337721A CN202110436991.8A CN202110436991A CN113337721A CN 113337721 A CN113337721 A CN 113337721A CN 202110436991 A CN202110436991 A CN 202110436991A CN 113337721 A CN113337721 A CN 113337721A
- Authority
- CN
- China
- Prior art keywords
- silver
- particles
- ore
- flotation
- 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
- 238000000034 method Methods 0.000 title claims abstract description 47
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 28
- 239000010931 gold Substances 0.000 title claims abstract description 28
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 25
- 239000004332 silver Substances 0.000 title claims abstract description 25
- 239000002893 slag Substances 0.000 title claims abstract description 17
- 238000003723 Smelting Methods 0.000 title claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 64
- 238000005188 flotation Methods 0.000 claims abstract description 37
- 238000002386 leaching Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims description 44
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 239000012141 concentrate Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000004088 foaming agent Substances 0.000 claims description 14
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- 239000012991 xanthate Substances 0.000 claims description 6
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 241000779819 Syncarpia glomulifera Species 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000001739 pinus spp. Substances 0.000 claims description 3
- 230000002000 scavenging effect Effects 0.000 claims description 3
- 229940036248 turpentine Drugs 0.000 claims description 3
- RYYWUUFWQRZTIU-UHFFFAOYSA-N Thiophosphoric acid Chemical class OP(O)(S)=O RYYWUUFWQRZTIU-UHFFFAOYSA-N 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 20
- 239000002184 metal Substances 0.000 abstract description 14
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- 150000002739 metals Chemical class 0.000 abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011593 sulfur Substances 0.000 abstract description 3
- 230000020477 pH reduction Effects 0.000 abstract description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 22
- 238000004064 recycling Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- 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
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a process for recovering gold and silver from smelting furnace slag, and aims to solve the problems that the existing acidification roasting process requires that the wet feeding roasting temperature cannot exceed 650 ℃, so that the sulfur burning rate is low, a small amount of gold and silver is wrapped and cannot be effectively oxidized, the gold and silver cannot be extracted and recovered more thoroughly, and the recovery quality and the recovery efficiency of the gold and silver in waste residues are reduced. The process for recovering gold and silver from the smelting furnace slag can effectively improve the recovery rate and the recovery quality of metals in the waste slag through crushing, flotation and cyaniding leaching, can make the waste liquid generated in the waste slag treatment process be more fully used, and reduces the pollution caused by the tailings in the treatment process.
Description
Technical Field
The invention relates to gold smelting and resource comprehensive recycling, in particular to a process for recycling gold and silver from smelting furnace slag.
Background
After the sulfur-containing gold concentrate is treated by acidizing and roasting, after copper is removed by acid leaching and gold and silver are extracted by cyanidation, the indexes of the waste residue after the water is removed by a ceramic filter are as follows: fe: 30-35 wt%, Au: 1.5-2.0 g/t, Ag: 40-50 g/t, CN: 0.7-0.8 wt%, S: 1.5-2.0 wt%, water: 25 to 26 wt%. According to the current environmental protection requirement, a special tailing pond is built for stacking waste residues; and the outward transportation requirements are strict (must be covered by tarpaulin, can not be spilled on the road).
The existing acidification roasting process requires that the wet feeding roasting temperature cannot exceed 650 ℃, so that the sulfur burning rate is low, a small amount of gold and silver are wrapped and cannot be effectively oxidized, the gold and silver cannot be extracted and recovered more thoroughly, and the recovery quality and the recovery efficiency of the gold and silver in the waste residue are reduced.
There is therefore a need to propose a solution to this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the process for recovering gold and silver from smelting slag, and the aims of effectively improving the recovery rate and recovery quality of valuable metals in waste slag are fulfilled through crushing, multiple flotation, grinding and cyaniding leaching.
The technical purpose of the invention is realized by the following technical scheme: the process for recovering gold and silver from smelting slag comprises the following steps: 1) putting the cooled waste residue into a crushing tower for crushing, wherein a spraying device is arranged in the crushing tower for spraying cyanide-containing waste liquid on the waste residue; 2) screening the crushed waste residue particles, and putting the particles which do not pass the screening into a crushing tower again for secondary crushing until the particles are smaller than 10 mm; 3) feeding the screened particles into a flotation machine for primary flotation, adding a collecting agent and a foaming agent for multiple times in the flotation process, and floating to obtain concentrate particles and tailing particles; 4) grinding the concentrate particles obtained in the step 3 by an ore grinder, sending the ground concentrate particles into a stirring tank, and stirring and mixing to obtain ore pulp with the concentration of 35-45%; 5) sending the ore pulp into a leaching tank for cyaniding leaching, and adding activated carbon into the leaching tank for adsorption after leaching is completed to obtain finished ore and barren liquor;
6) and (4) feeding the lean solution into a carbon adsorption tower for re-adsorption to obtain finished ore and cyanide-containing waste liquid.
By adopting the technical scheme, the particle size of the waste residue can be reduced after the waste residue is crushed, so that the waste residue can be more fully reacted in the subsequent treatment process, the cyanogen-containing waste liquid is sprayed in the crushing process, so that the waste residue particles and the cyanogen-containing waste liquid can be subjected to preliminary reaction, the waste residue particles are pretreated, the subsequent processing quality and efficiency of the waste residue particles are improved, the generation of dust in the crushing process of the waste residue particles can be reduced by spraying the cyanogen-containing waste liquid, and the pollution caused by waste residue treatment is reduced; the waste residue can be more uniform in particle size after being screened and repeatedly crushed, and can be more fully reacted in subsequent processing; concentrate particles containing valuable metals in waste residue particles can be screened and separated through the flotation of the flotation machine, and in the flotation process of the flotation machine, a collecting agent and a foaming agent are added into the flotation machine for multiple times, so that the collecting effect of the reagent can be enhanced, the effective collection of the reagent on gold and silver is ensured, and the efficient recovery of the gold and silver is ensured; the concentrate particles after grinding can react more fully in subsequent processing, after cyaniding leaching and activated carbon adsorption, the metal in the waste residues can be effectively recovered, the barren solution discharged from the leaching tank can be more thoroughly recovered after secondary adsorption of the activated carbon, the cyanide-containing waste liquid can be sprayed again after recovery in next processing, the recovery rate and the recovery quality of the metal in the waste residues can be effectively improved, and the waste liquid generated in the waste residue treatment process can be more fully used.
The invention is further configured to: the leaching tank is internally provided with a stirring rod which is rotationally connected with the leaching tank, and the stirring rod is fixedly connected with a plurality of stirring blades.
Through adopting above-mentioned technical scheme, just can drive the stirring leaf and stir in the internal rotation of leaching tank after rotating the puddler, make the interior cyanogen-containing liquid of leaching tank can with the concentrate granule between abundant react, further improved the efficiency and the quality of metal recovery.
The invention is further configured to: the collecting agent is one or more of sulfide ore collecting agents, such as one or more of various xanthates (xanthates) and thiophosphates (nigrums), and the foaming agent is turpentine, ether alcohol agents and the like.
The invention is further configured to: the flotation process of the flotation machine comprises one-time rough concentration, three-time fine concentration and two-time scavenging closed-circuit process.
By adopting the technical scheme, the flotation of the concentrate particles can be more sufficient through multiple times of flotation of the flotation machine, and the metal recovery rate in the tailings is improved.
The invention is further configured to: the flotation machine adds the collecting agent and the foaming agent for 3-6 times in the flotation process.
The invention is further configured to: the total addition amount of the collecting agent is 100-620 g per ton of ore, and the total addition amount of the foaming agent is 520g per ton of ore 100-620 g.
In conclusion, the invention has the following beneficial effects:
the recovery rate and the recovery quality of valuable metals in the waste residue can be effectively improved through crushing, multiple flotation, grinding and cyaniding leaching.
Detailed Description
The present invention will be described in detail with reference to examples.
The process for recovering gold and silver from smelting slag comprises the following steps: 1) the cooled waste residues are put into a crushing tower to be crushed, a spraying device is arranged in the crushing tower to spray cyanogen-containing waste liquid to the waste residues, the particle size of the waste residues can be reduced after the waste residues are crushed, the waste residues can be more fully reacted in the subsequent treatment process, the cyanogen-containing waste liquid is sprayed in the crushing process, the preliminary reaction can be carried out between the waste residue particles and the cyanogen-containing waste liquid, the waste residue particles are pretreated, the quality and the efficiency of the subsequent processing of the waste residue particles are improved, the generation of dust raised in the crushing process of the waste residue particles can be reduced by spraying the cyanogen-containing waste liquid, and the pollution caused by waste residue treatment is reduced;
2) screening the crushed waste residue particles, putting the particles which do not pass the screening into a crushing tower again for secondary crushing until the particles are smaller than 10mm, and enabling the waste residue particles to be more uniform in size after screening and multiple crushing, so that the waste residue particles can be more fully reacted in subsequent processing;
3) the screened particles are sent to a flotation machine for primary flotation, a collecting agent and a foaming agent are added for multiple times in the flotation process, the times of adding the collecting agent and the foaming agent in the flotation process of the flotation machine are 3-6, the flotation process of the flotation machine is a closed circuit process of primary roughing, tertiary concentrating and secondary scavenging, concentrate particles and tailing particles are floated, the concentrate particles containing valuable metals in waste residue particles can be screened and separated through the flotation of the flotation machine, and the collecting agent and the foaming agent are added in the flotation machine for multiple times in the flotation process of the flotation machine, so that the collecting effect of the agent can be enhanced, the effective collection of the agent on gold and silver is ensured, and the efficient recovery of the gold and silver is ensured;
grinding the concentrate particles obtained in the step 3 by an ore grinder, sending the ground concentrate particles into a stirring tank, stirring and mixing to obtain ore pulp with the concentration of 35-45%, wherein the ground concentrate particles can be used for grinding ore pulp
3) The reaction is more sufficient in the subsequent processing, and after cyaniding leaching and activated carbon adsorption, the metal in the waste residue can be effectively recovered;
4) sending the ore pulp into a leaching tank for cyaniding leaching, and adding activated carbon into the leaching tank for adsorption after leaching is completed to obtain finished ore and barren liquor;
the barren liquor is sent into the carbon adsorption tower to be adsorbed once more to obtain finished ore and cyanogen-containing waste liquor, the barren liquor discharged from the leaching tank can be used for recycling metal more thoroughly after secondary adsorption of active carbon, the cyanogen-containing waste liquor can be used for spraying when being processed next time after being recycled, and the waste liquor generated in the waste residue treatment process can be used more fully.
Be provided with rather than rotating the puddler of being connected in the leaching tank, a plurality of stirring leaves of fixedly connected with on the puddler just can drive the stirring leaf and stir in the leaching tank internal rotation after rotating the puddler, make the interior cyanogen-containing liquid of leaching tank can with the ore concentrate granule between abundant react, further improved the efficiency and the quality of metal recovery.
The collecting agent is one or more of sulfide ore collecting agents, such as one or more of various xanthate (xanthate) and thiophosphate (black powder), the foaming agent is selected from turpentine, ether alcohol and the like, the total adding amount of the collecting agent is 100-620 g per ton of ore, and the total adding amount of the foaming agent is 100-520g per ton of ore.
Therefore, the recovery rate and the recovery quality of metal in the waste residue can be effectively improved, the waste liquid generated in the waste residue treatment process can be more fully used, and the pollution caused in the process of recovering valuable metal from waste residue is reduced.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. The process for recovering gold and silver from smelting slag comprises the following steps: 1) putting the cooled waste residue into a crushing tower for crushing, wherein a spraying device is arranged in the crushing tower for spraying cyanide-containing waste liquid on the waste residue; 2) screening the crushed waste residue particles, and putting the particles which do not pass the screening into a crushing tower again for secondary crushing until the particles are smaller than 10 mm; 3) feeding the screened particles into a flotation machine for primary flotation, adding a collecting agent and a foaming agent for multiple times in the flotation process, and floating to obtain concentrate particles and tailing particles; 4) grinding the concentrate particles obtained in the step 3 by an ore grinder, sending the ground concentrate particles into a stirring tank, and stirring and mixing to obtain ore pulp with the concentration of 35-45%; 5) sending the ore pulp into a leaching tank for cyaniding leaching, and adding activated carbon into the leaching tank for adsorption after leaching is completed to obtain finished ore and barren liquor; 6) and (4) feeding the lean solution into a carbon adsorption tower for re-adsorption to obtain finished ore and cyanide-containing waste liquid.
2. The process for recovering gold and silver from smelting slag according to claim 1, wherein the process comprises the following steps: the leaching tank is internally provided with a stirring rod which is rotationally connected with the leaching tank, and the stirring rod is fixedly connected with a plurality of stirring blades.
3. The process for recovering gold and silver from smelting slag according to claim 2, wherein the process comprises the following steps: the collecting agent is one or more of sulfide ore collecting agents, such as one or more of various xanthates (xanthates) and thiophosphates (nigrums), and the foaming agent is turpentine, ether alcohol agents and the like.
4. The process for recovering gold and silver from smelting slag according to claim 1, wherein the process comprises the following steps: the flotation process of the flotation machine comprises one-time rough concentration, three-time fine concentration and two-time scavenging closed-circuit process.
5. The process for recovering gold and silver from smelting slag according to claim 1, wherein the process comprises the following steps: the flotation machine adds the collecting agent and the foaming agent for 3-6 times in the flotation process.
6. The process for recovering gold and silver from smelting slag according to claim 1, wherein the process comprises the following steps: the total addition amount of the collecting agent is 100-620 g per ton of ore, and the total addition amount of the foaming agent is 520g per ton of ore 100-620 g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110436991.8A CN113337721A (en) | 2021-04-22 | 2021-04-22 | Process for recovering gold and silver from smelting furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110436991.8A CN113337721A (en) | 2021-04-22 | 2021-04-22 | Process for recovering gold and silver from smelting furnace slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113337721A true CN113337721A (en) | 2021-09-03 |
Family
ID=77468377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110436991.8A Pending CN113337721A (en) | 2021-04-22 | 2021-04-22 | Process for recovering gold and silver from smelting furnace slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113337721A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214470A (en) * | 2008-01-21 | 2008-07-09 | 北京科技大学 | Method for using cyaniding barren solution to float, reclaim and cyaniding copper plumbum and zinc in tailings |
| CN101451192A (en) * | 2007-11-28 | 2009-06-10 | 灵宝市金源矿业有限责任公司 | Comprehensive recovery method for directly cyanating and intensified leaching multi-metal gold ore concentrate |
| CN104073645A (en) * | 2014-06-30 | 2014-10-01 | 东北大学 | Method for floatation-recovering valuable metals in superfine cyanided tailings by using high-cyanogen backwater |
| CN104148188A (en) * | 2014-08-06 | 2014-11-19 | 哈巴河金坝矿业有限公司 | Method and device for gold extraction through cyanide-leaching residues |
| CN104805295A (en) * | 2015-05-18 | 2015-07-29 | 张博文 | Process for recovering gold and silver from gold melting waste slag |
| CN105536981A (en) * | 2015-12-14 | 2016-05-04 | 灵宝金源晨光有色矿冶有限公司 | Process for recovering gold, silver and sulfur from castaway slag |
| CN107744884A (en) * | 2017-09-30 | 2018-03-02 | 昆明理工大学 | A kind of method of cyanide gold-leaching tailings flotation recycling gold |
-
2021
- 2021-04-22 CN CN202110436991.8A patent/CN113337721A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451192A (en) * | 2007-11-28 | 2009-06-10 | 灵宝市金源矿业有限责任公司 | Comprehensive recovery method for directly cyanating and intensified leaching multi-metal gold ore concentrate |
| CN101214470A (en) * | 2008-01-21 | 2008-07-09 | 北京科技大学 | Method for using cyaniding barren solution to float, reclaim and cyaniding copper plumbum and zinc in tailings |
| CN104073645A (en) * | 2014-06-30 | 2014-10-01 | 东北大学 | Method for floatation-recovering valuable metals in superfine cyanided tailings by using high-cyanogen backwater |
| CN104148188A (en) * | 2014-08-06 | 2014-11-19 | 哈巴河金坝矿业有限公司 | Method and device for gold extraction through cyanide-leaching residues |
| CN104805295A (en) * | 2015-05-18 | 2015-07-29 | 张博文 | Process for recovering gold and silver from gold melting waste slag |
| CN105536981A (en) * | 2015-12-14 | 2016-05-04 | 灵宝金源晨光有色矿冶有限公司 | Process for recovering gold, silver and sulfur from castaway slag |
| CN107744884A (en) * | 2017-09-30 | 2018-03-02 | 昆明理工大学 | A kind of method of cyanide gold-leaching tailings flotation recycling gold |
Non-Patent Citations (1)
| Title |
|---|
| 黄礼煌: "《金银提取技术》", 31 May 2012, 冶金工业出版社 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210903 |
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| RJ01 | Rejection of invention patent application after publication |