CN108940573A - A kind of gold mine quickly shunts method for concentrating - Google Patents
A kind of gold mine quickly shunts method for concentrating Download PDFInfo
- Publication number
- CN108940573A CN108940573A CN201810851585.6A CN201810851585A CN108940573A CN 108940573 A CN108940573 A CN 108940573A CN 201810851585 A CN201810851585 A CN 201810851585A CN 108940573 A CN108940573 A CN 108940573A
- Authority
- CN
- China
- Prior art keywords
- cell
- gold
- flotation
- rougher
- flotation cell
- 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.)
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- 239000010931 gold Substances 0.000 title claims abstract description 36
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 36
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000006260 foam Substances 0.000 claims abstract description 41
- 239000004576 sand Substances 0.000 claims abstract description 27
- 239000012141 concentrate Substances 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 239000003112 inhibitor Substances 0.000 claims abstract description 8
- 238000005188 flotation Methods 0.000 claims description 70
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 16
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 15
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical group CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 14
- 229960001763 zinc sulfate Drugs 0.000 claims description 8
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 8
- 235000010265 sodium sulphite Nutrition 0.000 claims description 7
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 7
- 239000012991 xanthate Substances 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052938 sodium sulfate Inorganic materials 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005456 ore beneficiation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- -1 3-butyl Chemical group 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- WQSRXNAKUYIVET-UHFFFAOYSA-N sulfuric acid;zinc Chemical compound [Zn].OS(O)(=O)=O WQSRXNAKUYIVET-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/025—Precious metal ores
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of gold mines quickly to shunt method for concentrating, it belongs to gold mine technical field of beneficiation.Present invention aim to address the weight of mine circulating load existing for the existing gold ore beneficiation method technical problems low with gold recovery.The technical solution adopted by the present invention is that: a kind of gold mine quickly shunts method for concentrating, raw ore slurry after grind grading is given to agitator by it, inhibitor is added in agitator and collecting agent is stirred and sizes mixing, the raw ore slurry sized mixing is given to rougher cell and carries out roughing, it opens a way to two slot foams before rougher cell, is exhausted directly to concentrate case;And the foam of remaining rougher cell then concentrates entrance selected, selected foam is discharged to concentrate case, is merged into final Gold Concentrate under Normal Pressure with two slot foams before rougher cell;Rougher cell sand setting addition collecting agent is being scanned, and is scanned sand setting and is then thrown into Tailings Dam as last tailing.The present invention has the advantages that the grade of Gold Concentrate under Normal Pressure can be made to be promoted, tailings grade is effectively reduced and improves gold recovery.
Description
Technical field
The present invention relates to a kind of gold mines quickly to shunt method for concentrating, it belongs to gold mine technical field of beneficiation.
Background technique
Present some gold ore beneficiation methods, due to design defect, the congenital designed capacity of cleaning technological flowasheet is insufficient, causes
Selected effect is not in full use in actual production process, along with production space is limited, is difficult to carry out production procedure complete
The transformation in face.Simultaneously as ore floatability has differences, the target mineral product in the foam in same roughing flotation operation slot
Position is there are echelon, and the high-grade foam in preceding slot even has reached or is more than concentrate index requirement, after which enters
Continue selected operation, target mineral will be made to run tail due to the long floatability of flotation time reduces, while increasing flotation flowsheet middling cycle
Load seriously affects gold recovery.
Summary of the invention
Present invention aim to address the weight of mine circulating load existing for existing gold ore beneficiation method is low with gold recovery
Technical problem, providing a kind of can separately handle the foam in rougher cell, can alleviate selected inefficiency of production, make essence
The gold mine that choosing played one's part to the full and improved golden sorting index quickly shunts method for concentrating.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of gold mine quickly shunts method for concentrating, the raw ore slurry after grind grading is given to agitator, in agitator
Addition inhibitor and collecting agent are stirred and size mixing, and the raw ore slurry sized mixing is given to rougher cell and carries out roughing, to roughing
The preceding two slots foam of flotation cell is opened a way, and concentrate case is exhausted directly to;And the foam of remaining rougher cell is then concentrated into essence
A flotation cell is selected to carry out selected for the first time, selected flotation cell sand setting returns to rougher cell, selected flotation cell foam collection
It is middle selected into second of the progress of selected two flotation cell;Selected two flotation cells sand setting again returns to a selected flotation cell, and selected two
Flotation cell foam is discharged to concentrate case, is merged into final Gold Concentrate under Normal Pressure with two slot foams before rougher cell;Rougher cell is heavy
Sand addition collecting agent carries out scanning for the first time in scanning a flotation cell, scans a flotation cell foam and returns to rougher cell,
It scans flotation cell sand setting addition collecting agent to be scanned for the second time in scanning two flotation cells, scans the return of two flotation cell foams
To a flotation cell is scanned, scans two flotation cell sand settings and be then thrown into Tailings Dam as last tailing.
Further, the inhibitor is sodium sulfite and zinc sulfate, and sodium sulfite dosage is 200~400g/t, sulfuric acid
Zinc dosage is 400~1000g/t.
Further, the collecting agent is butyl xanthate and butylamine black powder, dosage when butyl xanthate roughing are as follows: 120g/
T, dosage when butylamine black powder roughing are 20g/t;The dosage in sand setting is added in butyl xanthate are as follows: 30g/t, butylamine black powder are added heavy
Dosage in sand are as follows: 10g/t.
The invention has the benefit that
The present invention, which takes, quickly shunts selected mode, and the high foam of concentration ratio in rougher cell is directly opened a way and is come out,
Concentrate case is discharged to as concentrate product, and the foam of remaining rougher cell enters back into selected, can make selected abundant hair in this way
The effect of waving, while the circulation of part flotation chats on stream is reduced, it is equivalent to and increases flotation time, can improve
Gold process index.Therefore, compared with the background art, the present invention, which has, can make the grade of Gold Concentrate under Normal Pressure be promoted, tail is effectively reduced
The advantages of mine grade and raising gold recovery.
Detailed description of the invention
Fig. 1 is process flow chart of the invention;
In figure: 1-sodium sulfite, 2-zinc sulfate, 3-butyl xanthates, 4-black powder, A-raw ore slurry, B-roughing flotation
Two slot foam before slot, C-residue rougher cell foam, the selected flotation cell foam of D-, the selected two flotation cells foam of E-,
The selected two flotation cells sand setting of F-Gold Concentrate under Normal Pressure, G-, the selected flotation cell sand setting of H-, I-scan a flotation cell foam, and J-is scanned
Two flotation cell foams, K-tailing.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, one of the present embodiment gold mine quickly shunts method for concentrating, by the raw ore slurry after grind grading
A (grinding fineness -0.074mm 55%) is given to agitator, adds inhibitor in agitator and collecting agent is stirred and sizes mixing,
The inhibitor is sodium sulfite 1 and zinc sulfate 2, and 1 dosage of sodium sulfite is 250g/t, and 2 dosage of zinc sulfate is 500g/t, described
Collecting agent is butyl xanthate 3 and butylamine black powder 4,3 dosage of butyl xanthate are as follows: 120g/t, 4 dosage of black powder are 20g/t;It will size mixing
Raw ore slurry be given to rougher cell carry out roughing, open a way to two slot foam B before rougher cell, be exhausted directly to concentrate
Case;And the foam C of remaining rougher cell is then concentrated and is carried out into a selected flotation cell selected for the first time, a selected flotation cell is heavy
Sand H returns to rougher cell, and selected flotation cell foam D concentrates selected into second of the progress of selected two flotation cell;It is selected
Two flotation cell sand setting G again return to a selected flotation cell, and selected two flotation cells foam E is discharged to concentrate case, with rougher cell
Preceding two slots foam B is merged into final Gold Concentrate under Normal Pressure F;Rougher cell sand setting addition collecting agent carries out the in scanning a flotation cell
Once purging selection, the collecting agent are butyl xanthate 3 and butylamine black powder 4,3 dosage of butyl xanthate are as follows: 30g/t, 4 dosage of butylamine black powder
For 10g/t, a flotation cell foam I is scanned back to rougher cell, flotation cell sand setting addition collecting agent is scanned and is scanning two
It is scanned for the second time in flotation cell, the collecting agent is butyl xanthate 3 and butylamine black powder 4,3 dosage of butyl xanthate are as follows: 30g/
T, 4 dosage of butylamine black powder are 10g/t, scan two flotation cell foam J back to a flotation cell is scanned, scan two flotation cell sand settings then
Tailings Dam is thrown into as last tailing K.
Comparative example 1: the raw ore slurry (grinding fineness -0.074mm 55%) after grind grading is given to agitator, is being stirred
Added in bucket inhibitor sodium sulfite dosage 250g/t, zinc sulfate dosage 500g/t and collecting agent butyl xanthate dosage 120g/t,
Butylamine black powder dosage 20g/t, which is stirred, to size mixing, and the raw ore slurry sized mixing is given to rougher cell and carries out roughing, to all thick
Selecting the foam concentrations of flotation cell to enter, the progress of a selected flotation cell is selected for the first time, and selected flotation cell sand setting is floating back to roughing
Slot is selected, it is selected for the second time that selected flotation cell foam concentrations enter the progress of selected two flotation cell;Selected two flotation cells sand setting returns again
A selected flotation cell is returned to, selected two flotation cells foam is discharged to concentrate case, is final Gold Concentrate under Normal Pressure.The addition of rougher cell sand setting
Collecting agent butyl xanthate 30g/t, butylamine black powder 10g/t carry out scanning for the first time in scanning a flotation cell, scan a flotation cell
Foam returns to rougher cell, scans flotation cell sand setting addition collecting agent butyl xanthate 30g/t, butylamine black powder 10g/t exists
It scans and is scanned for the second time in two flotation cells, scan two flotation cell foams back to a flotation cell is scanned, scan two flotation cells
Sand setting is thrown into Tailings Dam as last tailing.
The present embodiment 1 and old process comparative example recycling Gold Concentrate under Normal Pressure index are shown in Table 1
Table 1
Case | Head grade (g/t) | Tailings grade | Gold concentrate grade (g/t) | Gold recovery (%) |
The embodiment of the present invention | 2.53 | 0.31 | 40.91 | 87.12 |
Comparative example | 2.53 | 0.44 | 35.27 | 85.22 |
As shown in Table 1, since gold concentrate grade improves 5.64g/t, so that Gold Concentrate under Normal Pressure is returned golden rate and is mentioned by 94% in sale
For height to 95%, every one ton of raw ore of processing increases benefit: 2.53 × 87.12% × 1% × 300=6.61 member;Due to gold recovery
1.9% is improved, every one ton of raw ore of processing increases benefit: 2.40 × 1.9% × 300=13.68 member;Both one ton of raw ores of every processing
Total benefit that increases: 6.61+13.68=20.29 member.
Sodium sulfite dosage in above-described embodiment 1 can also select between 200~400g/t, and zinc sulfate dosage can also be
It is selected between 400~1000g/t.
Claims (3)
1. a kind of gold mine quickly shunts method for concentrating, it is characterised in that: the raw ore slurry (A) after grind grading is given to agitator,
Inhibitor is added in agitator and collecting agent is stirred and sizes mixing, and the raw ore slurry sized mixing is given to rougher cell and is carried out slightly
Choosing, opens a way to two slot foams (B) before rougher cell, is exhausted directly to concentrate case;And the foam of remaining rougher cell
(C) the selected flotation cell of entrance is then concentrated to carry out selected for the first time, selected flotation cell sand setting (H) returns to rougher cell,
Selected flotation cell foam (D) is concentrated selected into second of the progress of selected two flotation cell;Selected two flotation cells sand setting (G) is returned again
A selected flotation cell is returned to, selected two flotation cells foam (E) is discharged to concentrate case, closes with two slot foams (B) before rougher cell
And at final Gold Concentrate under Normal Pressure (F);Rougher cell sand setting addition collecting agent carries out scanning for the first time in scanning a flotation cell, sweeps
It selects a flotation cell foam (I) back to rougher cell, scans flotation cell sand setting addition collecting agent in scanning two flotation cells
It is scanned for the second time, scans two flotation cell foams (J) back to a flotation cell is scanned, scan two flotation cell sand settings and be then used as most
Tailing (K) afterwards is thrown into Tailings Dam.
2. a kind of gold mine according to claim 1 quickly shunts method for concentrating, it is characterised in that: the inhibitor is sulfurous
Sour sodium and zinc sulfate, sodium sulfite dosage are 200~400g/t, and zinc sulfate dosage is 400~1000g/t.
3. a kind of gold mine according to claim 1 quickly shunts method for concentrating, it is characterised in that: the collecting agent is butyl
Xanthate and butylamine black powder, dosage when butyl xanthate roughing are as follows: 120g/t, dosage when butylamine black powder roughing is 20g/t;Butyl
The dosage in sand setting is added in xanthate are as follows: the dosage in sand setting is added in 30g/t, butylamine black powder are as follows: 10g/t.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810851585.6A CN108940573A (en) | 2018-07-30 | 2018-07-30 | A kind of gold mine quickly shunts method for concentrating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810851585.6A CN108940573A (en) | 2018-07-30 | 2018-07-30 | A kind of gold mine quickly shunts method for concentrating |
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Publication Number | Publication Date |
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CN108940573A true CN108940573A (en) | 2018-12-07 |
Family
ID=64466204
Family Applications (1)
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CN201810851585.6A Withdrawn CN108940573A (en) | 2018-07-30 | 2018-07-30 | A kind of gold mine quickly shunts method for concentrating |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112317139A (en) * | 2020-11-17 | 2021-02-05 | 云南思茅山水铜业有限公司 | Method for improving gold recovery rate of concentrate |
CN113262883A (en) * | 2020-10-27 | 2021-08-17 | 水口山有色金属有限责任公司 | Flotation method for improving grade of high-sulfur gold concentrate |
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CN1775373A (en) * | 2005-11-28 | 2006-05-24 | 中国铝业股份有限公司 | Bauxite separating method |
CN101028612A (en) * | 2007-04-02 | 2007-09-05 | 紫金矿业集团股份有限公司 | Closed-circuit method for improving refractory gold ore concentrate quality and recovery rate |
CN101028613A (en) * | 2007-04-02 | 2007-09-05 | 紫金矿业集团股份有限公司 | Open-circuit method for improving refractory gold ore concentrate quality and recovery rate |
CN101455998A (en) * | 2007-12-11 | 2009-06-17 | 灵宝市金源矿业有限责任公司 | Gold recovery method from rebellions ore |
CN105537006A (en) * | 2016-02-02 | 2016-05-04 | 青岛智瑞生物有限公司 | Method for achieving flotation of gold-containing ores through biological agent |
CN107597448A (en) * | 2017-10-25 | 2018-01-19 | 湖南水口山有色金属集团有限公司 | A kind of sorting process for improving the non-ferrous metal ore rate of recovery |
US20180112288A1 (en) * | 2014-01-31 | 2018-04-26 | Goldcorp Inc. | Process for separation of at least one metal sulfide from a mixed sulfide ore or concentrate |
-
2018
- 2018-07-30 CN CN201810851585.6A patent/CN108940573A/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1775373A (en) * | 2005-11-28 | 2006-05-24 | 中国铝业股份有限公司 | Bauxite separating method |
CN101028612A (en) * | 2007-04-02 | 2007-09-05 | 紫金矿业集团股份有限公司 | Closed-circuit method for improving refractory gold ore concentrate quality and recovery rate |
CN101028613A (en) * | 2007-04-02 | 2007-09-05 | 紫金矿业集团股份有限公司 | Open-circuit method for improving refractory gold ore concentrate quality and recovery rate |
CN101455998A (en) * | 2007-12-11 | 2009-06-17 | 灵宝市金源矿业有限责任公司 | Gold recovery method from rebellions ore |
US20180112288A1 (en) * | 2014-01-31 | 2018-04-26 | Goldcorp Inc. | Process for separation of at least one metal sulfide from a mixed sulfide ore or concentrate |
CN105537006A (en) * | 2016-02-02 | 2016-05-04 | 青岛智瑞生物有限公司 | Method for achieving flotation of gold-containing ores through biological agent |
CN107597448A (en) * | 2017-10-25 | 2018-01-19 | 湖南水口山有色金属集团有限公司 | A kind of sorting process for improving the non-ferrous metal ore rate of recovery |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113262883A (en) * | 2020-10-27 | 2021-08-17 | 水口山有色金属有限责任公司 | Flotation method for improving grade of high-sulfur gold concentrate |
CN112317139A (en) * | 2020-11-17 | 2021-02-05 | 云南思茅山水铜业有限公司 | Method for improving gold recovery rate of concentrate |
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Application publication date: 20181207 |
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