CN106733205A - The Efficient beneficiation method of troilite in lead zinc flotation tailing - Google Patents
The Efficient beneficiation method of troilite in lead zinc flotation tailing Download PDFInfo
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- CN106733205A CN106733205A CN201611134648.3A CN201611134648A CN106733205A CN 106733205 A CN106733205 A CN 106733205A CN 201611134648 A CN201611134648 A CN 201611134648A CN 106733205 A CN106733205 A CN 106733205A
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- Prior art keywords
- sulphur
- flotation
- zinc
- tailing
- time
- Prior art date
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Links
- 238000005188 flotation Methods 0.000 title claims abstract description 67
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 title claims abstract description 31
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 23
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000005864 Sulphur Substances 0.000 claims abstract description 92
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000012141 concentrate Substances 0.000 claims abstract description 30
- 229910052742 iron Inorganic materials 0.000 claims abstract description 22
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011701 zinc Substances 0.000 claims abstract description 21
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 19
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000002351 wastewater Substances 0.000 claims description 12
- 238000004064 recycling Methods 0.000 claims description 7
- 230000008719 thickening Effects 0.000 claims description 5
- 239000002516 radical scavenger Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 10
- 238000005265 energy consumption Methods 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 230000005574 cross-species transmission Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052683 pyrite Inorganic materials 0.000 description 3
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 3
- 239000011028 pyrite Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910020218 Pb—Zn Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000012991 xanthate Substances 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
-
- 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
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides one kind and selects the sulphur dosing to significantly reduce, but the Efficient beneficiation method of troilite in the lead zinc flotation tailing of the main grade of iron concentrate and sulphur operation recovery can be significantly improved, the method is by first selecting lead, the concentration after zinc 20 25% is selected again, the zinc tailings dewatering of pH >=12 is concentrated into the concentration underflow of concentration 50 52%, it is subsequently adding the pH=6 7 of sulfuric acid regulation concentration underflow, add and select sulphur collecting agent, most of sulphur iron concentrate of the main grade of sulphur more than 49% of hanking is directly entered product through once fast choosing with flotation column, remaining sulphur flotation device scans into iron concentrate of the main grade of sulphur more than 43% through a thick essence two, the total operation recovery of sulphur reaches more than 96%, the main grade of iron concentrate reaches 47%.
Description
Technical field
Method the present invention relates to carry out selecting sulphur to troilite in lead zinc flotation tailing, it is adaptable to sulphur in lead zinc flotation tailing
The high-efficiency comprehensive utilization of iron ore, and the recycling containing ferro-sulphur ore suitable for other nonferrous metals ores.
Background technology
The general all association ferro-sulphur ores of the nonferrous metal mines such as the existing Pb-Zn deposits of China, copper mine, mine is large number of, troilite
Aboundresources.Troilite is not only important Elementary Chemical Industry raw material, is also the source of iron and steel raw material, in troilite production sulfuric acid
During produce heat energy can also generate electricity, be also heat energy raw material.
Low concentration+flotation device technique that sulphur iron ore dressing is generally used in the current lead zinc flotation tailing of China is directly selected in, no
The mineral processing index of only sulphur iron is relatively low, and because selected concentration is low, causes resource recovery low, and many high energy consumptions of equipment, medicament disappear
Consumption height causes beneficiation cost high, the problems such as flotation spill-over is serious.
The content of the invention
Select the sulphur dosing to significantly reduce it is an object of the invention to provide one kind, but the main grade of iron concentrate can be significantly improved
With the Efficient beneficiation method of troilite in the lead zinc flotation tailing of sulphur operation recovery.
The Efficient beneficiation method of troilite in lead zinc flotation tailing of the present invention, after first selecting lead, selecting zinc again
The zinc tailings dewatering of concentration 20-25%, pH >=12 be concentrated into the concentration underflow of concentration 50-52%, be subsequently adding sulfuric acid regulation dense
The pH=6-7 of contracting underflow, adds and selects sulphur collecting agent, is more than most of sulphur main grade of sulphur of hanking through once fast choosing with flotation column
49% iron concentrate is directly entered product, and remaining sulphur flotation device scans into sulphur of the main grade of sulphur more than 43% through a thick essence two
Concentrate, the total operation recovery of sulphur reaches more than 96%, and the main grade of iron concentrate reaches 47%.
The Efficient beneficiation method of troilite in above-mentioned lead zinc flotation tailing, selects the sulphur remaining fund of selecting soon after sulphur to add fourth soon
Base xanthate sends into flotation device roughing sulphur, and the roughing sulphur mine tailing feeding flotation device after roughing sulphur scan for the first time, for the first time
First time after scanning scans mine tailing and is re-fed into flotation device and scanned for the second time；Roughing iron concentrate feeding after roughing sulphur is floating
Select the selected sulphur of machine；First time scavenger concentrate mixing Posterior circle after selected sulphur mine tailing and first time after selected sulphur are scanned is sent into
Flotation device carries out roughing, and the second scavenger concentrate circulation feeding flotation device after scanning for the second time scan for the first time.
The Efficient beneficiation method of troilite in above-mentioned lead zinc flotation tailing, concentrating of zinc tailings waste water recycling is in selecting zinc, second
It is secondary scan after Tailing thickening waste water recycling in selecting sulphur, remaining various waste water are by treatment for reuse in selecting lead and grind grading.
The Efficient beneficiation method of troilite in above-mentioned lead zinc flotation tailing, flotation column is microvesicle countercurrent flotation column, flotation
Machine is pneumatic flotation cell.
Beneficial effects of the present invention：Due to selecting lead zinc to add a large amount of water and lime, pulp density is very low while ore pulp is in
PH high, unfavorable to selecting sulphur, by concentrating of zinc tailings, the zinc tailings concentration control after concentration is gone to select sulphur in 50-52%, is not only sloughed
A large amount of zinc tail bucks high, and make to select the pulp volume of sulphur to be reduced significantly, make to select sulphur to be activated sulphur with less sulfuric acid, select sulphur medicine
Agent consumption is significantly reduced；And using microvesicle countercurrent flotation column-pneumatic flotation cell efficient joint Beneficiation flowsheet, by flotation column
Most of sulphur iron concentrate of the main grade of sulphur more than 49% of hanking is directly entered product by once fast choosing, and remaining sulphur utilizes one thick one
Essence two sweeps that sulphur choosing is clean, and iron concentrate of the main grade of sulphur of hanking more than 43%, the total operation recovery of sulphur reaches more than 96%, iron concentrate
Main grade reaches more than 47%, compared with tradition selects sulphur technique, in the case where flotation time extends, also subtracts sulphur floatation equipment
Few 40%, the efficient of troilite sorts in realizing lead zinc flotation tailing.The main grade of iron concentrate brings up to 47%, sulphur operation by 38%
The rate of recovery reaches 96%.
The technology of the present invention can effectively solve the current lead zinc of China and float using flotation column+flotation device high concentration flotation process
Select pyrite beneficiation common problem in mine tailing.The technology is applicable not only to lead-zinc ore floating mine tailing, is also applied for other
The synthetical recovery of troilite in nonferrous metals ore flotation tailing.The need for the technology of the present invention has adapted to industry technology development, have
Extensive popularizing application prospect.The inventive technique can be that the mineral resources saving of sulphur iron in polymetallic ore mountain is carried with comprehensive utilization
Fine technical support and demonstration have been supplied, it is Resources for construction economizing type, environment-friendly to promoting China metal mine technical progress of industry
The modernization mine of type has great impetus, will be that bigger tribute is made in China's mining industry Efficient Development and comprehensive utilization
Offer.
Brief description of the drawings
Fig. 1 is the technical process figure of the Efficient beneficiation method of troilite in this lead zinc flotation tailing.
Specific embodiment
The common association sulphur iron resource very abundant of certain Pb-Zn deposits, belongs to typical lead-zinc metallogenic belt, before Project Technical application,
Mine ferro-sulphur ore is reclaimed and does not only exist that the main grade of iron concentrate is low, sulfur recovery rate is not high, selects many energy consumption medicaments of sulphur flotation device
Consumption is high, the problems such as select sulphur frequent spill-over, and the requirement production marketing difficulties with sulphur iron market to sulfur grade, it is economical
Benefit is a greater impact, and tradition selects the sulphur technology can not to have met the normal Production requirement in market and mine.This is carried out
After the system research of mesh technology, achievement puts into successively to be applied and by after constantly improve, by the ore dressing of sulphur in lead zinc flotation tailing
Operation recovery improves 11 percentage points；The main grade of iron concentrate improves 9 percentage points；Sulphur power consumption reduction by 25% is selected, is closed
2kwh/t；Solve the problems, such as to select the easy spill-over of Sulfur capacity；The high-efficiency comprehensive utilization of ferro-sulphur ore in lead zinc flotation tailing is realized,
Economy and the social environment benefit for significantly improving mine are notable.
The beneficiation method of input application is described in further detail with reference to Fig. 1.
1st, concentrating of zinc tailings takes off high-alkali hydraulic art technology
It is low for lead zinc flotation tailing pH (>=12) high, concentration referring to Fig. 1（20-25% or so）Problem, by use zinc tail
One section of thickening, by the buck most of high abjection in zinc mine tailing, is concentrated to concentration 50%, and being delivered to sulphur flotation with pump stirs
Groove, adds sulphur acid for adjusting pH to neutral, addition and selects sulphur collecting agent, sulphur is possessed preferable floatability, to effectively improve sulphur master
Grade and the rate of recovery lay the foundation.
2nd, post machine is combined and selects sulfur highly effective technique of preparing
Referring to Fig. 1, and microvesicle countercurrent flotation column-pneumatic flotation cell efficient joint Beneficiation flowsheet is utilized, by flotation column once
Most of sulphur iron concentrate of the main grade of sulphur more than 49% of hanking is directly entered product by fast choosing, and remaining sulphur utilizes a thick essence two
Sweep that sulphur choosing is clean, iron concentrate of the main grade of sulphur of hanking more than 43%, the total operation recovery of sulphur reaches the main product of more than 96%, iron concentrate
Position reaches more than 47%.In selecting zinc, Tailing thickening waste water recycling in sulphur is selected, remaining various waste water pass through concentrating of zinc tailings waste water recycling
Reasonable sanding is back to and selects lead and grind grading etc., realizes the efficient synthetical recovery of ferro-sulphur ore in lead zinc flotation tailing.
Beneficiation Feed Grade for traditional pyrite flotation technology presence of the invention is high, float-amount is big, sorting equipment is more, energy
Consumption is high, spill-over phenomenon is serious, the main grade of iron concentrate is low, the rate of recovery is poor, reagent consumption is high, troilite has asking for floatability difference
Topic, pattern is sorted by breaking traditions, and has invented high concentration energy-saving environment protection ore dressing new technology, and by zinc mine tailing, preferentially concentration is de-
Water, high concentration selects sulphur iron, is combined using post machine and selects sulphur flow, and making fast choosing with flotation column directly goes out highgrade pyrite concentrate（S≥
49%）, remaining sulphur select net, final main grade S >=47% of iron concentrate, sulphur operation recovery >=96%, concentrating of zinc tailings waste water with flotation device
It is back to and selects zinc, Tailing thickening waste water recycling in sulphur is selected, remaining various waste water is back to by reasonable sanding and selects lead and ore grinding point
Level etc., realizes the efficient synthetical recovery of ferro-sulphur ore in lead zinc flotation tailing, is greatly saved and selects sulphur flotation energy consumption, and
Save and selected sulphur reagent consumption and wastewater treatment expense, revolutionized traditional sulphur iron dressing method, realized lead zinc flotation
The high-efficiency comprehensive utilization of troilite in mine tailing.
Leading indicator：
1st, it is selected in concentration：Select sulphur 50%.
2nd, the main grade of iron concentrate：Sulphur >=47%.
3rd, sulfur recovery rate：In raw ore sulphur >=30%, sulphur operation recovery 96%.
4th, sulphur wastewater recycle rate 100% is selected.
5th, sulphur energy consumption saving >=25% is selected.
Claims (4)
1. in lead zinc flotation tailing troilite Efficient beneficiation method, it is characterized in that：The concentration after first selecting lead, selecting zinc again
The zinc tailings dewatering of 20-25%, pH >=12 is concentrated into the concentration underflow of concentration 50-52%, is subsequently adding sulfuric acid regulation concentration underflow
PH=6-7, add and select sulphur collecting agent, most of sulphur is hanked sulphur of the main grade of sulphur more than 49% through once fast choosing with flotation column
Concentrate is directly entered product, and remaining sulphur flotation device scans into iron concentrate of the main grade of sulphur more than 43%, sulphur through a thick essence two
Total operation recovery reaches more than 96%, and the main grade of iron concentrate reaches 47%.
2. in lead zinc flotation tailing as claimed in claim 1 troilite Efficient beneficiation method, it is characterized in that：After selecting sulphur soon
Select soon sulphur remaining fund add butyl xanthate feeding flotation device roughing sulphur, after roughing sulphur roughing sulphur mine tailing feeding flotation device carry out
Scan for the first time, the first time after scanning for the first time scans mine tailing and is re-fed into flotation device and scanned for the second time；After roughing sulphur
Roughing iron concentrate feeding the selected sulphur of flotation device；First time after selected sulphur mine tailing and first time after selected sulphur are scanned scans
Concentrate mixing Posterior circle feeding flotation device carries out roughing, and the second scavenger concentrate circulation feeding flotation device after scanning for the second time enters
Row is scanned for the first time.
3. in lead zinc flotation tailing as claimed in claim 2 troilite Efficient beneficiation method, it is characterized in that：Concentrating of zinc tailings gives up
Water circulation in selecting zinc, the Tailing thickening waste water recycling after scanning for the second time in selecting sulphur, remaining various waste water by treatment for reuse in
Select lead and grind grading.
4. in lead zinc flotation tailing as claimed in claim 1 troilite Efficient beneficiation method, it is characterized in that：Flotation column is micro-
Bubble countercurrent flotation column, flotation device is pneumatic flotation cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611134648.3A CN106733205A (en) | 2016-12-11 | 2016-12-11 | The Efficient beneficiation method of troilite in lead zinc flotation tailing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611134648.3A CN106733205A (en) | 2016-12-11 | 2016-12-11 | The Efficient beneficiation method of troilite in lead zinc flotation tailing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106733205A true CN106733205A (en) | 2017-05-31 |
Family
ID=58875219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611134648.3A Pending CN106733205A (en) | 2016-12-11 | 2016-12-11 | The Efficient beneficiation method of troilite in lead zinc flotation tailing |
Country Status (1)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755099A (en) * | 2017-10-24 | 2018-03-06 | 洛阳坤宇矿业有限公司 | A kind of post machine combines two close cycles silt particle floatation process |
| CN107774456A (en) * | 2017-11-12 | 2018-03-09 | 南京银茂铅锌矿业有限公司 | Post machine joint is segmented asynchronous coarse concentrate regrinding and selects lead method |
| CN109647614A (en) * | 2018-12-29 | 2019-04-19 | 南京银茂铅锌矿业有限公司 | Column machine rapidly and efficiently selects zinc method and ore-sorting system |
| CN109647615A (en) * | 2018-12-29 | 2019-04-19 | 南京银茂铅锌矿业有限公司 | Efficiently improve beneficiation method and ore-sorting system that hardly possible selects the zinc concentrate rate of recovery |
| CN109967261A (en) * | 2019-04-10 | 2019-07-05 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | A kind of carbon dioxide replaces the floatation process of sulfuric acid activated pyrite |
| CN110064519A (en) * | 2019-04-26 | 2019-07-30 | 内蒙古大中矿业股份有限公司 | A kind of production technology of highgrade pyrite concentrate |
| CN111841895A (en) * | 2020-06-24 | 2020-10-30 | 紫金矿业集团股份有限公司 | Method for recovering valuable metal minerals from sulfide ore mine beneficiation sludge |
| CN113649173A (en) * | 2021-08-25 | 2021-11-16 | 南京银茂铅锌矿业有限公司 | Short-process sulfur flotation process for concentrated and rapid return of middlings |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755099A (en) * | 2017-10-24 | 2018-03-06 | 洛阳坤宇矿业有限公司 | A kind of post machine combines two close cycles silt particle floatation process |
| CN107755099B (en) * | 2017-10-24 | 2019-08-27 | 洛阳坤宇矿业有限公司 | A kind of column machine joint two close cycles silt particle floatation process |
| CN107774456A (en) * | 2017-11-12 | 2018-03-09 | 南京银茂铅锌矿业有限公司 | Post machine joint is segmented asynchronous coarse concentrate regrinding and selects lead method |
| CN109647614A (en) * | 2018-12-29 | 2019-04-19 | 南京银茂铅锌矿业有限公司 | Column machine rapidly and efficiently selects zinc method and ore-sorting system |
| CN109647615A (en) * | 2018-12-29 | 2019-04-19 | 南京银茂铅锌矿业有限公司 | Efficiently improve beneficiation method and ore-sorting system that hardly possible selects the zinc concentrate rate of recovery |
| CN109647615B (en) * | 2018-12-29 | 2020-03-20 | 南京银茂铅锌矿业有限公司 | Beneficiation method and beneficiation system for improving recovery rate of refractory zinc concentrate |
| CN109967261A (en) * | 2019-04-10 | 2019-07-05 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | A kind of carbon dioxide replaces the floatation process of sulfuric acid activated pyrite |
| CN110064519A (en) * | 2019-04-26 | 2019-07-30 | 内蒙古大中矿业股份有限公司 | A kind of production technology of highgrade pyrite concentrate |
| CN110064519B (en) * | 2019-04-26 | 2020-11-03 | 内蒙古大中矿业股份有限公司 | A kind of production process of high-grade sulfur concentrate |
| CN111841895A (en) * | 2020-06-24 | 2020-10-30 | 紫金矿业集团股份有限公司 | Method for recovering valuable metal minerals from sulfide ore mine beneficiation sludge |
| CN113649173A (en) * | 2021-08-25 | 2021-11-16 | 南京银茂铅锌矿业有限公司 | Short-process sulfur flotation process for concentrated and rapid return of middlings |
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Application publication date: 20170531 |