CN105363562A - Beneficiation method of low-grade cuprite - Google Patents
Beneficiation method of low-grade cuprite Download PDFInfo
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- CN105363562A CN105363562A CN201510894023.6A CN201510894023A CN105363562A CN 105363562 A CN105363562 A CN 105363562A CN 201510894023 A CN201510894023 A CN 201510894023A CN 105363562 A CN105363562 A CN 105363562A
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- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 title claims abstract description 67
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910052802 copper Inorganic materials 0.000 claims abstract description 95
- 239000010949 copper Substances 0.000 claims abstract description 95
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 94
- 238000005188 flotation Methods 0.000 claims abstract description 64
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 46
- 239000012141 concentrate Substances 0.000 claims abstract description 24
- 239000004088 foaming agent Substances 0.000 claims abstract description 21
- 239000002270 dispersing agent Substances 0.000 claims abstract description 9
- 239000007800 oxidant agent Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 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 description 20
- 239000002253 acid Substances 0.000 claims description 20
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 20
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 20
- 239000011734 sodium Substances 0.000 claims description 20
- 229910052708 sodium Inorganic materials 0.000 claims description 20
- 239000012991 xanthate Substances 0.000 claims description 20
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- 229910001779 copper mineral Inorganic materials 0.000 claims description 7
- 229910021532 Calcite Inorganic materials 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 239000010459 dolomite Substances 0.000 claims description 6
- 229910000514 dolomite Inorganic materials 0.000 claims description 6
- 239000010453 quartz Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 241000907663 Siproeta stelenes Species 0.000 claims description 5
- 239000012286 potassium permanganate Substances 0.000 claims description 4
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 2
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 2
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical group CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- XVIWVTWNQQUGQI-UHFFFAOYSA-L disodium;sulfanylidenemethanediolate Chemical compound [Na+].[Na+].[O-]C([O-])=S XVIWVTWNQQUGQI-UHFFFAOYSA-L 0.000 claims description 2
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 7
- 239000011707 mineral Substances 0.000 abstract description 7
- 230000003750 conditioning effect Effects 0.000 abstract 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 11
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 9
- 229960004643 cupric oxide Drugs 0.000 description 7
- 239000005751 Copper oxide Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910000431 copper oxide Inorganic materials 0.000 description 3
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 2
- 229940112669 cuprous oxide Drugs 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000000926 separation method Methods 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
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- Manufacture And Refinement Of Metals (AREA)
- Paper (AREA)
Abstract
The invention discloses a beneficiation method of low-grade cuprite. The method comprises the steps of after grinding the low-grade cuprite, adding water for pulp conditioning, so as to obtain ore pulp; sequentially adding an ore pulp dispersing agent, a vulcanizing agent, a copper ore collecting agent and a foaming agent into the ore pulp for pulp conditioning, and carrying out flotation to obtain cooper rough concentrate I; sequentially adding the vulcanizing agent, the copper ore collecting agent and the foaming agent into the ore pulp for pulp conditioning, and carrying out flotation to obtain a copper middling product; and finally, sequentially adding an oxidizing agent, the vulcanizing agent, the copper ore collecting agent and the foaming agent into the pulp for pulp conditioning, and carrying out flotation to obtain cooper rough concentrate II. The method is applicable to flotation of cuprite type copper ore, various copper-containing minerals in the copper ore can be fully recycled, the method is particularly applicable to flotation of cuprite which is difficult to beneficiate, copper concentrate with the copper grade of 18%-21% can be obtained, the cooper recovery rate reaches 78%-85% and is remarkably increased, the production cost is reduced, and the economic benefits are improved.
Description
Technical field
The present invention relates to a kind of beneficiation method of low-grade cuprite, in particular to one by stepped-flotation separation method, diffeential floatation cupric oxide ore, the method for the cuprous oxide ore deposit of difficult choosing sulfide flotation again after Strong oxdiative, realize the synthetical recovery of low-grade cuprite, belong to copper ore floatation technical field.
Background technology
Cupric oxide ore and mixed copper ore account for 10% ~ 15% of current world copper ore resource, account for 25% of copper metal amount.In ore, copper thing plants complexity mutually, affects the principal element that sorts to be: the oxygenation efficiency of sample ore about 85%, have up to 90%, copper mineral contains cupric oxide, malachite, cuprous oxide (cuprite), and cuprite wherein belongs to refractory copper ore.Ore-dressing technique research report both at home and abroad for this Copper Deposits is very few, and the main method of sulfide flotation that adopts reclaims copper mineral, but the flotation of this routine effectively can not reclaim cuprite, causes copper flotation recovery rate lower.
Summary of the invention
For the defect that the low-grade cuprite of existing sulfide flotation method process exists, the object of the invention is to be that provide a kind of obtains high-grade copper mineral from low-grade cuprite, and the beneficiation method that copper recovery is high, the method is simple to operate, cost is low, and achieves the synthetical recovery of low-grade high oxidation rate copper mine.
In order to realize above-mentioned technical purpose, the invention provides a kind of beneficiation method of low-grade cuprite, the method comprises the following steps:
(1) by after low-grade cuprite ore grinding, add water and size mixing, obtain ore pulp;
In described low-grade cuprite, copper grade is 0.6% ~ 0.9%, and gangue content comprises calcite, dolomite, quartz, cuprite and malachite, and main copper mineral is cuprite;
(2) add after ore pulp dispersant, vulcanizing agent, copper ore collecting agent and foaming agent size mixing in gained ore pulp successively, enter flotation, obtain copper rough concentrate I;
(3) add after vulcanizing agent, copper ore collecting agent and foaming agent size mixing in the ore pulp after (2) flotation successively, enter flotation, obtain copper chats;
(4) add after oxidant, vulcanizing agent, copper ore collecting agent and foaming agent size mixing in the ore pulp after (3) flotation successively, enter flotation, obtain copper rough concentrate II.
Technical scheme of the present invention adopts substep sulfide flotation in conjunction with the low-grade cuprite of method process of Strong oxdiative sulfide flotation, the cupric oxide ore easily selected is separated preferably by sulfide flotation, and in ore, the copper mineral of the difficult choosing of residue is separated by sulfide flotation after Strong oxdiative again.This method solve the technical bottleneck that existing sulfide flotation method is difficult to process low-grade cuprite, substantially increase the grade of copper concentrate and the rate of recovery of copper.
In preferred scheme, the mass percentage content that low-grade cuprite ore grinding to granularity meets-0.074mm grade is 95% ~ 98%.
In preferred scheme, the ore pulp mass percent concentration in (1) is 28% ~ 30%.
In preferred scheme, (2) in, the addition of the relatively low-grade cuprite of ore pulp dispersant is 1kg/t ~ 1.5kg/t, the addition of the relatively low-grade cuprite of vulcanizing agent is 1.5kg/t ~ 2kg/t, the addition of the relatively low-grade cuprite of copper ore collecting agent is 0.5kg/t ~ 1.5kg/t, and the addition of the relatively low-grade cuprite of foaming agent is 20g/t ~ 50g/t.
In preferred scheme, (3) in, the addition of the relatively low-grade cuprite of vulcanizing agent is 0.5kg/t ~ 1kg/t, the addition of the relatively low-grade cuprite of copper ore collecting agent is 0.2kg/t ~ 0.5kg/t, and the addition of the relatively low-grade cuprite of foaming agent is 10g/t ~ 20g/t.
In preferred scheme, (4) in, the addition of the relatively low-grade cuprite of oxidant is 2kg/t ~ 3kg/t, the addition of the relatively low-grade cuprite of vulcanizing agent is 1.0kg/t ~ 1.5kg/t, the addition of the relatively low-grade cuprite of copper ore collecting agent is 0.2kg/t ~ 0.4kg/t, and the addition of the relatively low-grade cuprite of foaming agent is 10g/t ~ 20g/t.
More preferably in scheme, dispersant is at least one in waterglass, ammonium sulfate and calgon.
More preferably in scheme, vulcanizing agent is vulcanized sodium and/or sodium thiocarbonate.
More preferably in scheme, copper ore collecting agent is at least one in butyl xanthate, amyl group xanthate, butyl black powder and benzyl hydroximic acid.
More preferably in scheme, oxidant is at least one in hydrogen peroxide, potassium permanganate, clorox, calcium hypochlorite and potassium bichromate.
In preferred scheme, in (2), in ore pulp, add ore pulp dispersant successively, size mixing 5 ~ 8 minutes; Add vulcanizing agent, size mixing 20 ~ 30 minutes; Add copper ore collecting agent, size mixing 3 ~ 5 minutes; Add foaming agent, size mixing 2 ~ 3 minutes.
In preferred scheme, in (3), in ore pulp, add vulcanizing agent successively, size mixing 5 ~ 10 minutes; Add copper ore collecting agent, size mixing 3 ~ 6 minutes; Add foaming agent, size mixing 1 ~ 2 minute.
In preferred scheme, in (4), in ore pulp, add oxidant successively, size mixing 20 ~ 30 minutes; Add vulcanizing agent, size mixing 5 ~ 10 minutes; Add copper ore collecting agent, size mixing 3 ~ 6 minutes; Add foaming agent, size mixing 1 ~ 2 minute.
Low-grade cuprite main component of the present invention is calcite, dolomite, quartz, cuprite, malachite etc., and clay content is higher; Wherein, copper grade, 0.6% ~ 0.9%, mainly exists with the form of cuprite.
Hinge structure, the Advantageous Effects that technology of the present invention is brought is:
1, technical scheme of the present invention adopts method such as substep sulfide flotation and ore pulp Strong oxdiative after cure flotation etc., achieve the synthetical recovery of various copper mineral in low-grade high oxidation rate copper mine, the particularly cuprite of difficult choosing, obtaining copper concentrate copper grade is 18% ~ 21%, and the rate of recovery reaches 78% ~ 85%;
2, technical scheme of the present invention is simple to operate, cost is low, meets industrial production application requirement.
Detailed description of the invention
Following examples are intended to further illustrate content of the present invention, instead of the protection domain of restriction the claims in the present invention.
Embodiment 1
This method is adopted to carry out float test to Xinjiang low grade copper oxide ore.In these mineral, copper content is 0.85%, and gangue mineral is quartz, calcite and dolomite mainly, and copper mainly exists with the form of cuprite.
Ore ore grinding is accounted for 96% to-0.074mm, add water size mixing to mass concentration be 30%; Add the waterglass of 1.5kg/t, size mixing 8 minutes, after add the vulcanized sodium of 2kg/t, size mixing 20 minutes, then add the benzyl hydroximic acid of 800g/t penta xanthate and 300g/t, size mixing 5 minutes, finally add the terpenic oil of 20g/t, size mixing 2 minutes.In flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate I; In ore pulp, continue the vulcanized sodium adding 500g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 150g/t penta xanthate and 50g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats.The potassium permanganate adding 2kg/t is continued in ore pulp, size mixing 30 minutes, then add the vulcanized sodium of 1kg/t, size mixing 10 minutes, continue the benzyl hydroximic acid adding 300g/t penta xanthate and 100g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate II.Finally, selected through twice, finally obtain the copper concentrate that copper grade is 20.36%, closed circuit copper overall recovery reaches 81.34%.
Comparative example 1
Adopt the sample ore in embodiment 1, ore ore grinding accounted for 96% to-0.074mm, add water size mixing to mass concentration be 30%; Add the waterglass of 1.5kg/t, size mixing 8 minutes, after add the vulcanized sodium of 2kg/t, size mixing 20 minutes, then add the benzyl hydroximic acid of 800g/t penta xanthate and 300g/t, size mixing 5 minutes, finally add the terpenic oil of 20g/t, size mixing 2 minutes.In flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate I; In ore pulp, continue the vulcanized sodium adding 500g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 150g/t penta xanthate and 50g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats I.In ore pulp, continue the vulcanized sodium into 500g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 150g/t penta xanthate and 50g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats II.Finally, selected through twice, finally obtain the copper concentrate that copper grade is 18.58%, closed circuit copper overall recovery is only 67.85%.
Embodiment 2
This method is adopted to carry out float test to Sichuan low grade copper oxide ore.In these mineral, copper content is 0.68%, and gangue mineral is quartz, mica, calcite and dolomite mainly, and copper mainly exists with the form of cuprite.
Ore ore grinding is accounted for 97.5% to-0.074mm, add water size mixing to mass concentration be 28.5%; Add the waterglass of 1300g/t, size mixing 8 minutes, after add the vulcanized sodium of 2kg/t, size mixing 20 minutes, then add the benzyl hydroximic acid of 1kg/t penta xanthate and 400g/t, size mixing 5 minutes, finally add the terpenic oil of 20g/t, size mixing 2 minutes.In flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate I; In ore pulp, continue the vulcanized sodium adding 800g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 250g/t penta xanthate and 80g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats.The potassium permanganate adding 2.5kg/t is continued in ore pulp, size mixing 30 minutes, then add the vulcanized sodium of 1000g/t, size mixing 10 minutes, continue the benzyl hydroximic acid adding 200g/t penta xanthate and 50g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate II.Finally, selected through twice, finally obtain the copper concentrate that copper grade is 18.33%, closed circuit copper overall recovery reaches 82.32%.
Comparative example 2
Adopt the sample ore in embodiment 2, ore ore grinding accounted for 97.5% to-0.074mm, add water size mixing to mass concentration be 28.5%; Add the waterglass of 1300g/t, size mixing 8 minutes, after add the vulcanized sodium of 2kg/t, size mixing 20 minutes, then add the benzyl hydroximic acid of 1kg/t penta xanthate and 400g/t, size mixing 5 minutes, finally add the terpenic oil of 20g/t, size mixing 2 minutes.In flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate I; In ore pulp, continue the vulcanized sodium adding 800g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 250g/t penta xanthate and 80g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats I.In ore pulp, continue the vulcanized sodium adding 800g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 250g/t penta xanthate and 80g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats II.Finally, selected through twice, finally obtain the copper concentrate that copper grade is 16.56%, closed circuit copper overall recovery reaches 71.02%.
Embodiment 3
This method is adopted to carry out float test to Guizhou low grade copper oxide ore.In these mineral, copper content is 0.72%, and gangue mineral is quartz, calcite and dolomite mainly, and copper mainly exists with the form of cuprite and malachite.
Ore ore grinding is accounted for 98% to-0.074mm, add water size mixing to mass concentration be 30%; Add the waterglass of 1.2kg/t, size mixing 8 minutes, after add the vulcanized sodium of 2kg/t, size mixing 20 minutes, then add the benzyl hydroximic acid of 1kg/t penta xanthate and 500g/t, size mixing 5 minutes, finally add the terpenic oil of 20g/t, size mixing 2 minutes.In flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate I; In ore pulp, continue the vulcanized sodium adding 800g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 300g/t penta xanthate and 100g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats I.The hydrogen peroxide adding 2kg/t is continued in ore pulp, size mixing 30 minutes, then add the vulcanized sodium of 1.5kg/t, size mixing 10 minutes, continue the benzyl hydroximic acid adding 200g/t penta xanthate and 50g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate II.Finally, selected through twice, finally obtain the copper concentrate that copper grade is 19.28%, closed circuit copper overall recovery reaches 78.05%.
Comparative example 3
Adopt the sample ore in embodiment 3, ore ore grinding accounted for 98% to-0.074mm, add water size mixing to mass concentration be 30%; Add the waterglass of 1.8kg/t, size mixing 8 minutes, after add the vulcanized sodium of 3kg/t, size mixing 20 minutes, then add the benzyl hydroximic acid of 1kg/t penta xanthate and 500g/t, size mixing 5 minutes, finally add the terpenic oil of 20g/t, size mixing 2 minutes.In flotation device, carry out flotation, the froth pulp obtained is copper rough concentrate I; In ore pulp, continue the vulcanized sodium adding 800g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 300g/t penta xanthate and 100g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats I.In ore pulp, continue the vulcanized sodium adding 800g/t, size mixing 5 minutes, then add the benzyl hydroximic acid of 300g/t penta xanthate and 100g/t, size mixing 5 minutes, finally add the terpenic oil of 10g/t, size mixing 1 minute, in flotation device, carry out flotation, the froth pulp obtained is copper chats II.Finally, selected through twice, finally obtain the copper concentrate that copper grade is 17.05%, closed circuit copper overall recovery reaches 68.37%.
Claims (10)
1. a beneficiation method for low-grade cuprite, is characterized in that: comprise the following steps:
(1) by after low-grade cuprite ore grinding, add water and size mixing, obtain ore pulp;
In described low-grade cuprite, copper grade is 0.6% ~ 0.9%, and gangue content comprises calcite, dolomite, quartz, cuprite and malachite, and main copper mineral is cuprite;
(2) add after ore pulp dispersant, vulcanizing agent, copper ore collecting agent and foaming agent size mixing in gained ore pulp successively, enter flotation, obtain copper rough concentrate I;
(3) add after vulcanizing agent, copper ore collecting agent and foaming agent size mixing in the ore pulp after (2) flotation successively, enter flotation, obtain copper chats;
(4) add after oxidant, vulcanizing agent, copper ore collecting agent and foaming agent size mixing in the ore pulp after (3) flotation successively, enter flotation, obtain copper rough concentrate II.
2. the beneficiation method of low-grade cuprite according to claim 1, is characterized in that: the mass percentage content that described low-grade cuprite ore grinding to granularity meets-0.074mm grade is 95% ~ 98%.
3. the beneficiation method of low-grade cuprite according to claim 1, is characterized in that: the ore pulp mass percent concentration in (1) is 28% ~ 30%.
4. the beneficiation method of low-grade cuprite according to claim 1, it is characterized in that: in (2), the addition of the relatively low-grade cuprite of ore pulp dispersant is 1kg/t ~ 1.5kg/t, the addition of the relatively low-grade cuprite of vulcanizing agent is 1.5kg/t ~ 2kg/t, the addition of the relatively low-grade cuprite of copper ore collecting agent is 0.5kg/t ~ 1.5kg/t, and the addition of the relatively low-grade cuprite of foaming agent is 20g/t ~ 50g/t.
5. the beneficiation method of low-grade cuprite according to claim 1, it is characterized in that: in (3), the addition of the relatively low-grade cuprite of vulcanizing agent is 0.5kg/t ~ 1kg/t, the addition of the relatively low-grade cuprite of copper ore collecting agent is 0.2kg/t ~ 0.5kg/t, and the addition of the relatively low-grade cuprite of foaming agent is 10g/t ~ 20g/t.
6. the beneficiation method of low-grade cuprite according to claim 1, it is characterized in that: in (4), the addition of the relatively low-grade cuprite of oxidant is 2kg/t ~ 3kg/t, the addition of the relatively low-grade cuprite of vulcanizing agent is 1.0kg/t ~ 1.5kg/t, the addition of the relatively low-grade cuprite of copper ore collecting agent is 0.2kg/t ~ 0.4kg/t, and the addition of the relatively low-grade cuprite of foaming agent is 10g/t ~ 20g/t.
7. the beneficiation method of low-grade cuprite according to claim 4, is characterized in that: described dispersant is at least one in waterglass, ammonium sulfate and calgon.
8. the beneficiation method of the low-grade cuprite according to any one of claim 4 ~ 7, is characterized in that: described vulcanizing agent is vulcanized sodium and/or sodium thiocarbonate; Described copper ore collecting agent is at least one in butyl xanthate, amyl group xanthate, butyl black powder and benzyl hydroximic acid.
9. the beneficiation method of low-grade cuprite according to claim 7, is characterized in that: described oxidant is at least one in hydrogen peroxide, potassium permanganate, clorox, calcium hypochlorite and potassium bichromate.
10. the beneficiation method of low-grade cuprite according to claim 1, is characterized in that:
(2) in ore pulp, add ore pulp dispersant successively in, size mixing 5 ~ 8 minutes; Add vulcanizing agent, size mixing 20 ~ 30 minutes; Add copper ore collecting agent, size mixing 3 ~ 5 minutes; Add foaming agent, size mixing 2 ~ 3 minutes;
(3) in ore pulp, add vulcanizing agent successively in, size mixing 5 ~ 10 minutes; Add copper ore collecting agent, size mixing 3 ~ 6 minutes; Add foaming agent, size mixing 1 ~ 2 minute;
(4) in ore pulp, add oxidant successively in, size mixing 20 ~ 30 minutes; Add vulcanizing agent, size mixing 5 ~ 10 minutes; Add copper ore collecting agent, size mixing 3 ~ 6 minutes; Add foaming agent, size mixing 1 ~ 2 minute.
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