CN104815746A - Recovery method of high-iron highly-argillaceous alkaline gangue refractory oxide copper ore - Google Patents
Recovery method of high-iron highly-argillaceous alkaline gangue refractory oxide copper ore Download PDFInfo
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- CN104815746A CN104815746A CN201510163371.6A CN201510163371A CN104815746A CN 104815746 A CN104815746 A CN 104815746A CN 201510163371 A CN201510163371 A CN 201510163371A CN 104815746 A CN104815746 A CN 104815746A
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- 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
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- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/002—High gradient magnetic separation
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- 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
Abstract
The invention relates to a recovery method of a high-iron highly-argillaceous alkaline gangue refractory oxide copper ore, and belongs to the technical field of ore processing. A raw oxide copper ore is ground for mixed flotation by sulfur and oxygen to obtain a sulfur-oxygen mixed flotation concentrate and a flotation tailing; through high-gradient magnetic separation of the flotation tailing, a refractory oxide copper magnetic separation rough concentrate and a magnetic separation tailing are obtained; the open selection is performed for the oxide copper magnetic separation rough concentrate obtained through the high-gradient magnetic separation for 2-3 times to obtain an oxide copper magnetic separation concentrate and a magnetic separation middling; and wet leaching is performed for the magnetic separation middling. The recovery rate of the recovery method is increased by 15-25% compared with single floatation. The recovery method solves the problems of low recovery rate of conventional vulcanization flotation to high-iron-content oxide copper minerals, high agent consumption, low leaching rate, high energy consumption, easy hardening and high production cost in the process of wet leaching of highly-argillaceous alkaline gangue oxide copper and low recovery rate of single magnetic separation to copper minerals. The recovery method guarantees high-efficiency recovery of high-iron highly-argillaceous alkaline gangue refractory oxide copper. The recovery method is stable in process flow, strong in adaptability and low in production cost, and facilitates the industrial implementation.
Description
Technical field
The present invention relates to a kind of recovery method of high ferro high shale content basic gangue refractory copper oxide ores, belong to technical field of mineral processing.
Background technology
Copper is the important non-ferrous metal being related to national economy, and it is with conduction, heat conduction, anti-tensile, the premium properties such as wear-resisting, the industrial circle such as to be widely used in electrically, machine-building, the energy are military.Along with the development of national economy, the demand of China to copper constantly increases.China can supply the copper ore resource critical shortage of commercial mining and utilization, and copper-sulphide ores and Yi Xuan rich ore reduce day by day, and that therefore strengthens refractory copper ore sorts technical research, improves its comprehensive utilization ratio, significant.
Cupric oxide ore is high containing mud, fine size, and reagent consumption is large, production cost is high; Partial oxidation copper mineral or be present in iron mineral in isomorphous mode, or be mixed into containing magnetic impurities such as Fe, Mn due to suction-operated or machinery, greatly reduce floatability.Adopt existing old process, as floatation, segregation-floatation, ammonia leaching-Sulphur-precipitation flotation method, chemical mineral processing method, these methods of Bioleaching reclaim copper, ubiquity the features such as technological process is complicated, beneficiation cost is high, the rate of recovery is low, environmental pollution is serious, is difficult to industrial implementation.
Application number is a kind of high shale content basic gangue Flotation of Oxide Copper Ore of CN102764701A, adopts the floatation process without foaming agent-strong activation-mud dispersion-strong collecting to carry out the recovery of cupric oxide.The method is low to the Percentage bound high iron content cupric oxide rate of recovery.
Application number is a kind of high flotation and metallurgy method containing mud cupric oxide ore of CN103555938A, and by crushing raw ore, washup to coarse grain ore pulp and the particulate ore pulp not containing mud, coarse grain flotation of ore pulp, leaches after particulate slurry concentrating.The method does not reclaim copper in washup sludge, simultaneously low to the Percentage bound high iron content cupric oxide rate of recovery.
Application number is the integrated conduct method of a kind of mud of CN101724749A, iron, calcium, magnesium high-load cupric oxide ore, comprises washup, sour dump leaching and acid and stirs leaching.When cupric oxide ore oxygenation efficiency is low, the method is low to the copper sulfide rate of recovery in cupric oxide ore.
Therefore, the high efficiente callback needing exploitation high ferro high shale content basic gangue refractory copper oxide ore badly utilizes technology.
Summary of the invention
For poor containing magnetic impurity copper mineral floatability containing high ferro high shale content basic gangue refractory copper oxide ores, flotation recovery rate is low, wet-leaching production cost is high, the problem that single magnetic separation is low to the copper mineral rate of recovery, the invention provides a kind of recovery method of high ferro high shale content basic gangue refractory copper oxide ores, it is low that described method has cost, the features such as the rate of recovery is high, strong adaptability.
Technical scheme of the present invention is, provides a kind of recovery method of high ferro high shale content basic gangue refractory copper oxide ores, comprises the following steps:
(1) levigate for raw ore extremely-0.074 mm is accounted for 65% ~ 95%;
(2) bulk flotation of sulphur oxygen is carried out to the raw ore after levigate, obtain sulphur oxygen bulk flotation rougher concentration and sulphur oxygen bulk flotation rougher tailings;
(3) carry out selectedly obtaining sulphur oxygen bulk concentrate to described sulphur oxygen bulk flotation rougher concentration; Described sulphur oxygen bulk flotation rougher tailings is scanned, obtains the mixing of sulphur oxygen and scan mine tailing;
(4) scan mine tailing to the mixing of described sulphur oxygen to carry out high-gradient magnetic separation and obtain high-gradient magnetic separation rough concentrate and magnetic tailing, magnetic tailing throws tail;
(5) described high-gradient magnetic separation rough concentrate is carried out to magnetic separation is selected obtains magnetic concentrate and magnetic middling ore;
(6) wet-leaching is carried out to described magnetic middling ore;
Wherein the bulk flotation of sulphur oxygen is roughly selected, and add 1000 ~ 5000g vulcanized sodium as vulcanizing agent by raw ore per ton, 100 ~ 500g penta xanthate is as collecting agent, and 20 ~ 60gMIBC is as foaming agent; Scan and add 200 ~ 500g vulcanized sodium as vulcanizing agent by raw ore per ton, 30 ~ 100g penta xanthate is as collecting agent, and 10 ~ 30gMIBC is as foaming agent.
Described sulphur oxygen bulk flotation rougher concentration carry out 1 ~ 3 time selected; Described sulphur oxygen bulk flotation rougher tailings carries out the bulk flotation of 1 ~ 2 sulphur oxygen and scans; Described sulphur oxygen mixing is scanned mine tailing and is carried out 2 ~ 3 high-gradient magnetic separation, and described high-gradient magnetic separation magnetic field intensity is: 0.8 ~ 1.4T; It is selected that described high-gradient magnetic separation rough concentrate carries out 2 ~ 3 high-gradient magnetic separation, and described high-gradient magnetic separation magnetic field intensity is: 0.7 ~ 1.2T; Described high-gradient magnetic separation chats leaches, and leaching condition is: adopt leaching, leaching acid is sulfuric acid, and in ore pulp, acid concentration is 50 ~ 150g/L extraction temperature 20 DEG C ~ 30 DEG C, extraction time 1 ~ 5 hour.
The invention has the advantages that: during method for floating process high shale content cupric oxide, because sludge is superfine, specific area is large, and be adsorbed on coarse granule surface and form cover cap phenomenon, the effect between retarding agent and rough grain, makes reagent consumption amount significantly increase; Meanwhile, sludge is easily entrained in flotation froth, is circulated in flow process and is difficult to remove, and reduces concentrate grade and the rate of recovery, makes flotation be difficult to carry out.Utilize single method for floating can not the sorting high shale content basic gangue cupric oxide ore of economical and efficient; Part copper mineral or be present in iron mineral in isomorphous mode in copper oxide mineral, or be mixed into containing magnetic impurities such as Fe, Mn due to suction-operated, machinery, or exist with the form of delafossite, copper ferromanganese aluminium silica bond, add floatability and specific susceptibility difference between different copper oxide mineral.This part copper mineral flotation rate of recovery is low.Along with the progress of magnetic separation process and magnetic plant, application magnetic separation process reclaims this part copper-bearing mineral becomes possibility.It is low that magnetic separation obtains the alkaline acid consumpting substance content such as shale and calcium magnesium in magnetic concentrate, for wet-leaching provides quality raw materials; According to single wet-leaching PROCESS FOR TREATMENT high shale content basic gangue cupric oxide ore, because raw ore contains a large amount of shale basic gangue, the serious strainability reducing solution permeability and subsequent product in leaching process on the one hand, medicament acid consumption is large on the other hand, cost is high, easily hardens, leaching rate is low.
The present invention gives full play to flotation, magnetic separation and wet method advantage separately, learn from other's strong points to offset one's weaknesses, overcome conventional oxidation copper ore floatation to low containing the magnetic impurity copper mineral rate of recovery, in wet method leaching process, high shale content causes reagent consumption large, leaching rate is low, energy consumption is high, and production cost is high, the problem that single magnetic separation is low to the copper mineral rate of recovery.The present invention can make high ferro high shale content basic gangue refractory copper oxide ore be fully recycled, and is not only conducive to saving resource, and significant for the nervous situation alleviating Mineral Resources in China.
Use new method provided by the invention, with *** saussure high ferro high shale content basic gangue refractory copper oxide ore for handling object, in the small-scale test of system, on the basis of expanding test, complete the commerical test of 2000 ton per days.The industrial test indexes obtained is: between raw ore copper grade 2.5% ~ 5.5%, between oxygenation efficiency 45% ~ 95%, time between clay content 45% ~ 60%, iron content beam 15% ~ 25% is obtaining copper concentrate cupric > 19%, between copper comprehensive recovery 82% ~ 92%.More than 20% percentage point is improved than the rate of recovery of single flotation, single magnetic separation or single leaching copper.Every year can contribution tax more than 300,000,000 yuan.The present invention, no matter from technological process itself or the technical-economic index obtained by it, has significant promotion and exemplary to the processing and utilization of China's cupric oxide ore of the same type.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described
embodiment
1
Raw ore is selected from high grade copper oxide ore deposit, Tibet, raw ore iron content is high, sludge content is large, this ore deposit cupric 4.40%, iron content 20.76%, copper oxygenation efficiency about 65%, copper mineral is mainly malachite, chessy copper, delafossite, copper ferromanganese aluminium silica bond, is mixed into iron causes copper mineral especially cupric oxide floating difficulty in a large amount of copper mineral with absorption or machinery.The complicated occurrence state of copper in ore, main tax exists in free copper oxide and secondary copper sulfide, and distributive law is respectively 41.50%, 34.31%; Secondly exist with the form in conjunction with cupric oxide, distributive law is 27.83%.Gangue mineral is mainly based on clay minerals.
This ore deposit copper mineral reclaims and comprises the following steps:
(1) ore grinding: raw ore ore grinding accounts for 75% to fineness-0.074 mm;
(2) bulk flotation of sulphur oxygen is roughly selected: by per ton to ore deposit, and amount of sodium sulfide is 2000g, stirs 2 minutes, penta xanthate 350g, Aethoxy Sklerol 30g, stirs 2 minutes, flotation time 3 minutes; Obtain sulphur oxygen bulk flotation rougher concentration and the thick mine tailing of sulphur oxygen bulk flotation;
(3) the thick mine tailing of sulphur oxygen bulk flotation obtains the bulk flotation of sulphur oxygen scan mine tailing through to scan for twice, by per ton to ore deposit, wherein scans in a process, amount of sodium sulfide is 500g, stirs 2 minutes, penta xanthate 80g, Aethoxy Sklerol 20g, stirs 2 minutes, flotation time 3 minutes; Scan in two processes, amount of sodium sulfide is 200g, stirs 2 minutes, penta xanthate 40g, Aethoxy Sklerol 10g, stirs 2 minutes, flotation time 3 minutes, obtains the bulk flotation of sulphur oxygen and scans mine tailing; Sulphur oxygen bulk flotation rougher concentration is selected through three blank, obtains sulphur oxygen bulk flotation concentrate; The bulk flotation of sulphur oxygen scans three concentrate for twice through one roughing can obtain Cu Concentrate Grade 29.89%, to raw ore copper recovery 64.20%;
(4) high-gradient magnetic separation: sulphur oxygen bulk flotation mine tailing carries out twice high-gradient magnetic separation, and magnetic field intensity is respectively 0.8T and 1.2 T, obtains high-gradient magnetic separation rough concentrate and and magnetic tailing.It is selected that high-gradient magnetic separation rough concentrate carries out three magnetic separation, and obtain magnetic concentrate and magnetic middling ore, magnetic field intensity is respectively 1.0 T, 0.8T and 0.7T; High-gradient magnetic separation roughly selects triple cleaning through twice can obtain Cu Concentrate Grade 8.79%, to raw ore copper recovery 11.32%;
(5) wet-leaching: by per ton to ore deposit, magnetic middling ore carries out wet-leaching, and adding sulfuric acid dosage is 50kg, extraction temperature 30 DEG C, extraction time 3.0 hours, and leaching rate is 84%, to raw ore copper recovery 14.5%.In magnetic middling ore, the content of CaO, MgO is respectively 0.73%, 0.59%, and the content of acid consumpting substance CaO, MgO is low, can provide good raw material for hydrometallurgy;
(6) overall recovery through the process integration copper of flotation-magnetic separation-wet-leaching reaches 90.02%.
embodiment
2
Raw ore is selected from Tibet copper mine, raw ore iron content is high, sludge content is large, this ore deposit cupric 2.7%, iron content 17.85%, copper oxygenation efficiency about 92%, copper mineral is mainly malachite, chessy copper, delafossite, copper ferrimanganic aluminium silica bond, is mixed into iron causes copper mineral especially cupric oxide floating difficulty in a large amount of copper mineral with absorption or machinery.The complicated occurrence state of copper in ore, main tax there is free copper oxide and in conjunction with in cupric oxide, distributive law is respectively 60.38%, 35.69%.Gangue mineral is mainly based on clay minerals.
This ore deposit copper mineral reclaims and comprises the following steps:
(1) ore grinding: raw ore ore grinding accounts for 90% to fineness-0.074 mm;
(2) bulk flotation of sulphur oxygen is roughly selected: by per ton to ore deposit, and amount of sodium sulfide is 3500g, stirs 2 minutes, penta xanthate 300g, Aethoxy Sklerol 35g, stirs 2 minutes, flotation time 3 minutes; Obtain sulphur oxygen bulk flotation rougher concentration and the thick mine tailing of sulphur oxygen bulk flotation;
(3) the thick mine tailing of sulphur oxygen bulk flotation obtains the bulk flotation of sulphur oxygen scan mine tailing through to scan for twice, by per ton to ore deposit, wherein scans in a process, amount of sodium sulfide is 1000g, stirs 2 minutes, penta xanthate 100g, Aethoxy Sklerol 20g, stirs 2 minutes, flotation time 3 minutes; Scan in two processes, amount of sodium sulfide is 500g, stirs 2 minutes, penta xanthate 50g, Aethoxy Sklerol 10g, stirs 2 minutes, flotation time 3 minutes, obtains the bulk flotation of sulphur oxygen and scans mine tailing; Sulphur oxygen bulk flotation rougher concentration is selected through three blank, obtains sulphur oxygen bulk flotation concentrate; The bulk flotation of sulphur oxygen scans three concentrate for twice through one roughing can obtain Cu Concentrate Grade 24.61%, to raw ore copper recovery 55.51%;
(4) high-gradient magnetic separation: sulphur oxygen bulk flotation mine tailing carries out twice high-gradient magnetic separation, and magnetic field intensity is respectively 0.8T and 1.2 T, obtains high-gradient magnetic separation rough concentrate and and magnetic tailing.It is selected that high-gradient magnetic separation rough concentrate carries out three magnetic separation, and obtain magnetic concentrate and magnetic middling ore, magnetic field intensity is respectively 1.0T, 0.8T and 0.7T; High-gradient magnetic separation roughly selects triple cleaning through twice can obtain Cu Concentrate Grade 8.26%, to raw ore copper recovery 7.59%;
(5) wet-leaching: by per ton to ore deposit, magnetic middling ore carries out wet-leaching, and adding sulfuric acid dosage is 60kg, extraction temperature 30 DEG C, extraction time 3.0 hours, and leaching rate is 85%, to raw ore copper recovery 17.36%.In magnetic middling ore, the content of CaO, MgO is respectively 0.66%, 0.75%, and the content of acid consumpting substance CaO, MgO is lower, can provide good raw material for hydrometallurgy;
(6) overall recovery through the process integration copper of flotation-magnetic separation-wet-leaching reaches 80.46%.
Claims (7)
1.
an ore dressing recovery method for high ferro high shale content basic gangue refractory copper oxide ores, is characterized in that, comprise the following steps:
(1) levigate for raw ore extremely-0.074 mm is accounted for 65% ~ 95%;
(2) bulk flotation of sulphur oxygen is carried out to the raw ore after levigate, obtain sulphur oxygen bulk flotation rougher concentration and sulphur oxygen bulk flotation rougher tailings;
(3) carry out selectedly obtaining sulphur oxygen bulk concentrate to described sulphur oxygen bulk flotation rougher concentration; Described sulphur oxygen bulk flotation rougher tailings is scanned, obtains the mixing of sulphur oxygen and scan mine tailing;
(4) scan mine tailing to the mixing of described sulphur oxygen to carry out high-gradient magnetic separation and obtain high-gradient magnetic separation rough concentrate and magnetic tailing, magnetic tailing throws tail;
(5) described high-gradient magnetic separation rough concentrate is carried out to magnetic separation is selected obtains magnetic concentrate and magnetic middling ore;
(6) wet-leaching is carried out to described magnetic middling ore.
2. ore dressing recovery method according to claim 1, is characterized in that, in step (1), described raw ore all iron content 15% ~ 35%, gangue mineral based on clay class basic gangue, wherein CaO+MgO content 10% ~ 25%, described raw ore copper mineral oxygenation efficiency 40% ~ 95%.
3.
ore dressing recovery method according to claim 1, is characterized in that, in step (2), the bulk flotation of described sulphur oxygen is roughly selected, add 1000 ~ 5000g vulcanized sodium as vulcanizing agent by raw ore per ton, 100 ~ 500g penta xanthate is as collecting agent, and 20 ~ 60gMIBC is as foaming agent; In step (3), described sulphur oxygen bulk flotation rougher tailings is scanned, and add 200 ~ 500g vulcanized sodium as vulcanizing agent by raw ore per ton, 30 ~ 100g penta xanthate is as collecting agent, and 10 ~ 30gMIBC is as foaming agent.
4.
ore dressing recovery method according to claim 1, is characterized in that, in step (3), to described sulphur oxygen bulk flotation rougher concentration carry out 1 ~ 3 time selected; Carry out the bulk flotation of 1 ~ 2 sulphur oxygen to described sulphur oxygen bulk flotation rougher tailings to scan.
5. ore dressing recovery method according to claim 1, is characterized in that, in step (4), scan mine tailing to described sulphur oxygen mixing and carry out 2 ~ 3 high-gradient magnetic separation, described high-gradient magnetic separation magnetic field intensity is: 0.8 ~ 1.4T.
6. ore dressing recovery method according to claim 1, is characterized in that, in step (5), carry out 2 ~ 3 high-gradient magnetic separation to described high-gradient magnetic separation rough concentrate selected, described high-gradient magnetic separation magnetic field intensity is: 0.7 ~ 1.2T.
7.
ore dressing recovery method according to claim 1, it is characterized in that, in step (6), described high-gradient magnetic separation chats is leached, described leaching condition is: adopt leaching, leaching acid is sulfuric acid, and in ore pulp, acid concentration is 50-150g/L extraction temperature 20 DEG C ~ 30 DEG C, extraction time 1-5 hour.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998750A (en) * | 2015-08-12 | 2015-10-28 | 玉溪大红山矿业有限公司 | Beneficiation method for efficiently recycling low-grade copper-bearing lava magnetite |
| CN105435952A (en) * | 2015-11-09 | 2016-03-30 | 湖南有色金属研究院 | Method for recovering high-pelitic and high-iron copper oxide ore hard to treat |
| CN106916944A (en) * | 2017-03-09 | 2017-07-04 | 昆明理工大学 | A kind of method that Solid Inclusion cupric oxide ore selecting smelting combination is recycled |
| CN108262156A (en) * | 2018-03-30 | 2018-07-10 | 拜城县滴水铜矿开发有限责任公司 | The beneficiation method of the low-grade refractory copper oxide ore of high shale content high basic gangue |
| WO2018161653A1 (en) * | 2017-03-09 | 2018-09-13 | 昆明理工大学 | Method for recycling wrapped complex copper oxide ores |
| CN110216018A (en) * | 2019-05-28 | 2019-09-10 | 西北矿冶研究院 | Beneficiation method for high-mud fine-grain copper oxide ore |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998750A (en) * | 2015-08-12 | 2015-10-28 | 玉溪大红山矿业有限公司 | Beneficiation method for efficiently recycling low-grade copper-bearing lava magnetite |
| CN104998750B (en) * | 2015-08-12 | 2017-05-03 | 玉溪大红山矿业有限公司 | Beneficiation method for efficiently recycling low-grade copper-bearing lava magnetite |
| CN105435952A (en) * | 2015-11-09 | 2016-03-30 | 湖南有色金属研究院 | Method for recovering high-pelitic and high-iron copper oxide ore hard to treat |
| CN106916944A (en) * | 2017-03-09 | 2017-07-04 | 昆明理工大学 | A kind of method that Solid Inclusion cupric oxide ore selecting smelting combination is recycled |
| CN106916944B (en) * | 2017-03-09 | 2018-01-12 | 昆明理工大学 | A kind of method that Solid Inclusion cupric oxide ore selecting smelting combination recycles |
| WO2018161653A1 (en) * | 2017-03-09 | 2018-09-13 | 昆明理工大学 | Method for recycling wrapped complex copper oxide ores |
| AU2017403278B2 (en) * | 2017-03-09 | 2019-11-21 | China Nonferrous Metal Mining Group | Method for recycling wrapped complex copper oxide ores |
| CN108262156A (en) * | 2018-03-30 | 2018-07-10 | 拜城县滴水铜矿开发有限责任公司 | The beneficiation method of the low-grade refractory copper oxide ore of high shale content high basic gangue |
| CN108262156B (en) * | 2018-03-30 | 2020-06-30 | 拜城县滴水铜矿开发有限责任公司 | Beneficiation method for high-argillaceous and high-alkaline gangue low-grade refractory copper oxide ore |
| CN110216018A (en) * | 2019-05-28 | 2019-09-10 | 西北矿冶研究院 | Beneficiation method for high-mud fine-grain copper oxide ore |
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