CN103736569B - A kind of beneficiation method of sulphide ore - Google Patents
A kind of beneficiation method of sulphide ore Download PDFInfo
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- CN103736569B CN103736569B CN201310677274.XA CN201310677274A CN103736569B CN 103736569 B CN103736569 B CN 103736569B CN 201310677274 A CN201310677274 A CN 201310677274A CN 103736569 B CN103736569 B CN 103736569B
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- 238000000034 method Methods 0.000 title claims abstract description 88
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000005188 flotation Methods 0.000 claims abstract description 131
- 239000012141 concentrate Substances 0.000 claims abstract description 77
- 238000000227 grinding Methods 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000008187 granular material Substances 0.000 claims abstract description 8
- 229910052569 sulfide mineral Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000006260 foam Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 238000005273 aeration Methods 0.000 claims description 13
- 238000002386 leaching Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 239000004088 foaming agent Substances 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000009991 scouring Methods 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 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 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 38
- 239000011707 mineral Substances 0.000 abstract description 38
- 238000011084 recovery Methods 0.000 abstract description 35
- 229910052751 metal Inorganic materials 0.000 abstract description 18
- 239000002184 metal Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 84
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 13
- 229910052750 molybdenum Inorganic materials 0.000 description 13
- 239000011733 molybdenum Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 7
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 7
- 229910052951 chalcopyrite Inorganic materials 0.000 description 6
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 6
- 229910052948 bornite Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052976 metal sulfide Inorganic materials 0.000 description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000010494 dissociation reaction Methods 0.000 description 3
- 230000005593 dissociations Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 229910052960 marcasite Inorganic materials 0.000 description 2
- 229910052961 molybdenite Inorganic materials 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052969 tetrahedrite Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241000168254 Siro Species 0.000 description 1
- OXTUGHPNQWIYEI-UHFFFAOYSA-N [Au]=S.[Cu] Chemical compound [Au]=S.[Cu] OXTUGHPNQWIYEI-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910001779 copper mineral Inorganic materials 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 229910052955 covellite Inorganic materials 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 150000004763 sulfides Chemical group 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
A beneficiation method for sulphide ore, the beneficiation method relating to a kind of sulphide ore is improved, and particularly adopts the method for grinding column machine associating flotation.The step of its ore dressing process comprises and being sorted through one section by sulfide mineral, obtains one section of coarse granule concentrate A1 and section product from failing A2; One section of mine tailing A2 is it is characterized in that to adopt grinding column machine to carry out combining the process of sorting.Method of the present invention, effectively can overcome the problem that disseminated grain size is thin, the sulphide ore of material composition complexity adopts conventional flotation method effectively not reclaim in floatation process, grinding column machine is adopted to carry out combining the process of sorting one section of mine tailing, in mineral after the ore dressing of ultra-fine grade target minreal application grinding column machine, reach satisfied metal recovery effect.
Description
Technical field
A beneficiation method for sulphide ore, the beneficiation method relating to a kind of sulphide ore is improved, and particularly adopts the method for grinding column machine associating flotation.
Background technology
In Mineral Processing Industry, the dressing method that metal sulfide rock is most widely used is floating separation, is called for short flotation.Floatation is applied to the history that Mining Market has more than 150 year, and floatation process and theory there has also been very large development, defines the floatation process of various unique technology content and various uses.
Along with the continuous exploitation of mineral resources utilizes, mineral resources become more and more poorer, and poor, thin, assorted, the difficult future development of mineral resources trend, difficulty selects the yield proportion of grandidierite increasing, and the disseminated grain size of valuable mineral is thin.The technological process of floatation process sulfide mineral be traditionally arranged to be two stage grinding, two sections roughly select, repeatedly selected and coarse scan choosing, the outstanding feature of this kind of flow process to obtain thinner product, can carry out roughly grinding and fine grinding at different grinding section, and when requiring that mog is less than 0.15mm(and 80%-200 order), adopt stage grinding less expensive, and product granularity composition evenly, it is few that hardness crosses crushing phenomenon compared with large gangue mineral.But there is fatefulue weakness, be also the common problem that current floatation exists, be specially:
1, after regrinding, in fine fraction, valuable metal can not well be recycled.Between the mineral of the mine tailing that cause one section is thick, selected, fine-grained dissemination characteristic determines and must carry out Ultrafine Grinding to ore, monomer whose is dissociated, can realize effective sorting of mineral.
2, valuable metal disseminated grain size is comparatively thin, often adopts the technology enriching and recovering sorted of regrinding.Valuable metal sulfide is generally in tiny granular or irregular granular aggregate is embedding is distributed in gangue mineral, even part with oxide ore and with its compact siro spinning technology, form relict texture, network and particulate disseminated structure, multi-metal sulfide or mutually formation a kind of special " microcrystal is fit ".This part mineral enters conventional flotation, on the one hand, ultra-fine grain specific area is large, surface energy is high, beneficiation reagent weakens the solid hydrophobic effect of the parent of target minreal in this case, the character of swimming of target minreal and gangue mineral is very close, be difficult to effective separation, the contradictory relation of concentrate grade and the rate of recovery at this time seems very outstanding, makes the recovery utilization rate of superfine granule metal sulfide mineral lower.Current domestic existing a large amount of gold mine, weakly magnetic iron ore, manganese ore, phosphorus ore, bauxite etc. cannot effectively sortings because target minreal and associated mineral disseminated grain size are too thin.
3, in flotation, the process of chats is problem comparatively complicated in floatation process always, does not have new theory and process application to obtain the example of achievement in research in industrial practice.In general, during application floatation process, mainly contain two kinds of disposal options according to the mineral composition of chats, one directly returns last flow process, and another kind is independent regrinding and reconcentration, thus obtain the second qualified concentrate containing.These two kinds of mode process chats can improve comprehensive recovery to a certain extent, but simultaneously a large amount of chats circulate in flotation flowsheet also can worsen each section of operation sort environment and total quality flow process, the room for promotion of restriction recovery rate in ore-dressing, chats metal rate is about 35-40%, and operation recovery is low is the principal element affecting sorting operation comprehensive recovery.
Summary of the invention
Object of the present invention is exactly the deficiency existed for above-mentioned prior art, provides a kind of beneficiation method that effectively can overcome the sulphide ore of the problem that disseminated grain size is thin, the sulphide ore of material composition complexity adopts conventional flotation method effectively not reclaim in floatation process.
The object of the invention is to be achieved through the following technical solutions.
A beneficiation method for sulphide ore, the step of its ore dressing process comprises and being sorted through one section by sulfide mineral, obtains one section of coarse granule concentrate A1 and section product from failing A2; One section of mine tailing A2 is it is characterized in that to adopt grinding column machine to carry out combining the process of sorting.
The beneficiation method of a kind of sulphide ore of the present invention, is characterized in that the step that the process of sorting combined by grinding column machine comprises:
(1) the mine tailing A2 sorted a section carries out scouring and controls classification, obtain-400 order content reach 95 ~ 98% meet the material B1 that flotation column sorts requirement, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=38 μm, enters control classification; B1 is as flotation column raw material;
(2) the qualified products B1 that the vertical mixing mill of step (1) prepares is fed tank diameter, lime solution adds 500 ~ 1000g/t; Add water and the concentration of ore pulp adjusted to 25 ~ 30%, add adjusting agent vulcanized sodium 30-100g/t, waterglass 100-200g/t, collecting agent butyl xanthate 10g/t+ aerofloat 226 50g/t, foaming agent 2# oil 10g/t, then stir
5minute, obtain flotation column to ore deposit B3;
(3) two sections of ore pulp B1 step (2) obtained, feed flotation column and carry out concentrate enrichment and sort, in ore pulp, pour air, aeration quantity remains on 26-28m
3/ min, implements foam spray, leaching quantity 1-1.5m
3/ h, froth bed THICKNESS CONTROL, at 150-200mm, sorts time 10-12 minute, obtains a selected copper concentrate products C 1 and flotation column product from failing C2;
(4) selected copper concentrate product D1 step (3) obtained, feed essence and sweep two flotation columns and carry out concentrate enrichment, in ore pulp, pour air, aeration quantity remains on 32-35m
3/ min, implements foam spray, leaching quantity 1.5-1.8m
3/ h, froth bed THICKNESS CONTROL, at 350-400mm, sorts time 8-10 minute, and copper concentrate products C 3, the C4 product obtaining selected two product from failing C4 and particulate returns in order and feeds a selected flotation column;
(5) flotation column product from failing C2 step 3 obtained, feeds the once purging selection that flotation device carries out flotation column cleaner tailings, adds water pulp density to adjust to 15-18%, is filled with air 0.45-0.5m in ore pulp
3/ m
2min, flotation 13 minutes, obtains flotation device and scans a concentrate products C 5 and scan a product from failing C6, scans a concentrate products C 5 and returns vertical mixing mill and regrind;
(6) by the product from failing C6 that step (5) obtains, feed and scan two flotation devices and sort, add water and pulp density adjusted to 13-15%, in ore pulp, be filled with air 0.35m
3/ m
2min, flotation 10-11 minute, obtain scanning two concentrate products C 7 and scanning product from failing C8, C7 product returns to feed in order scans a flotation device.
The beneficiation method of a kind of sulphide ore of the present invention, is characterized in that the C8 product of its output is as system true tailings.Through sorting of this technological process, flotation column concentrate C3 product send smelting as qualified concentrate containing together with A1, and C8 is system true tailings, after concentrated, deliver to tailings reservoir for piling.
The beneficiation method of a kind of sulphide ore of the present invention, is characterized in that the granularity of Ball-stirring mill is 20 ~ 30 times of feeding granularity F80; When sulphide ore ore grinding, solid weight concentration is 55% ~ 65%; Vertical stirring mill medium volume loadings when not overflow is 80%.
The beneficiation method of a kind of sulphide ore of the present invention, is characterized in that flotation column feed ore concentration controls as 25%-38%, aeration quantity 26-35m
3/ min, the blowing pressure remains between 0.8-1.2MPa, and froth bed thickness is 50-300mm.
The beneficiation method of a kind of sulphide ore of the present invention, it is characterized in that flotation device feed ore concentration is at 18%-25%, depth of foam remains on 60-120mm.
The beneficiation method of a kind of sulphide ore of the present invention, its beneficial effect is:
1, key equipment vertical mixing mill, flotation column and flotation device special advantage separately in flow process is given full play to, mutual formation supporting technical conditions, can effectively solve sulfide mineral and associated mineral disseminated grain size too thin, be easy to overground and adopt conventional flotation cannot the low problem of the efficiency of separation.
2, in target minreal fine grinding or Ultrafine Grinding operation, when the monomer dissociation adopting conventional ore grinding technology (as ball mill) to realize valuable metal, power consume and production cost are quite high.Even if mog can make mineral obtain monomer dissociation, but the overground phenomenon of product is serious, and many valuable minerals are lost in sludge.And vertical mixing mill production efficiency is high, be more than ten times of ball mill, energy resource consumption is 1/4 of ball mill, overground rate can be reduced to less than 2% while realizing Ultrafine Grinding, and shockproof operating type more can meet the requirement that environmental protection is produced.
3, in this technique, flotation column structure is simple, and space availability ratio is high, does not have moving component noiselessness, and operating environment is good, can be described as safe low energy consumption operation; Because its bubble-particle flotation interface is sufficient, concentration ratio is large, the rate of recovery is high, flotation speed is fast, and flotation flowsheet simplifies more, effectively reduces flotation operation number of times.
4, in the mine tailing after this separating method sorts, the valuable metal that general sulphide ore form exists, containing quantity not sufficient 3%, illustrates that this flow process has almost reclaimed ultra-fine grade target minreal completely; Less than-10 μm recovery rate of valuable metals bring up to more than 50% by 30% of general grading process, grinding column machine associating Beneficiation flowsheet Be very effective.This dressing method is applied to sorting of copper sulfide gold mine, and compared with the dressing method of ball mill+common flotation device, Cu Concentrate Grade improves 2%, and copper, gold recovery improve 0.1%, 1.8%.
Accompanying drawing explanation
Fig. 1 is principle process chart of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment and accompanying drawing thereof, the present invention is described in further detail, but because the scope of application of grinding column machine technique is wider, so embodiments of the present invention are not limited to two examples lifted in the present invention.
A beneficiation method for sulphide ore, the step of its ore dressing process comprises and being sorted through one section by sulfide mineral, obtains one section of coarse granule concentrate A1 and section product from failing A2; Adopt grinding column machine to carry out combining the process of sorting one section of mine tailing A2, in mineral after ultra-fine grade target minreal application grinding column machine beneficiation method, reach satisfied metal recovery effect.
Specifically comprise the following steps:
1, material prepares
Mineral, after one section sorts, obtain one section of coarse granule concentrate A1 and section product from failing A2; A1 metal content, 10.66% ~ 16.85%, send smelting procedure together with the concentrate after sorting with grinding column machine technique, and one section of mine tailing A2 raw material enters grinding column machine associating Beneficiation flowsheet.
2 grinding column machines are combined and are sorted
2.1 stock grading
The mine tailing A2 sorted one section carries out scouring and controls classification, obtain-400 order content reach 95 ~ 98% meet the material B1 that flotation column sorts requirement, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=38 μm, enters control classification; B1 is as flotation column raw material.
2.2 dosings, size mixing and stir
The qualified products B1 that step 2.1 vertical mixing mill prepares is fed tank diameter, and lime solution adds 500 ~ 1000g/t; Add water and the concentration of ore pulp adjusted to 25 ~ 30%, add adjusting agent vulcanized sodium 30-100g/t, waterglass 100-200g/t, collecting agent butyl xanthate 10g/t+ aerofloat 226 50g/t, foaming agent 2# oil 10g/t, then stir
5minute, obtain flotation column to ore deposit B3;
2.3 sort
2.3.1 flotation column selected: two sections of ore pulp B1 step 2.2 obtained, feed flotation column and carry out concentrate enrichment and sort, in ore pulp, pour air, aeration quantity remains on 26-28m
3/ min, implements foam spray, leaching quantity 1-1.5m
3/ h, froth bed THICKNESS CONTROL, at 150-200mm, sorts time 10-12 minute, obtains a selected copper concentrate products C 1 and flotation column product from failing C2;
2.3.2 flotation column selected two: the selected copper concentrate product D1 obtained by step 2.3.1, feed essence and sweep two flotation columns and carry out concentrate enrichment, in ore pulp, pour air, aeration quantity remains on 32-35m
3/ min, implements foam spray, leaching quantity 1.5-1.8m
3/ h, froth bed THICKNESS CONTROL, at 350-400mm, sorts time 8-10 minute, and copper concentrate products C 3, the C4 product obtaining selected two product from failing C4 and particulate returns in order and feeds a selected flotation column;
2.3.3 flotation device scans one: the flotation column product from failing C2 obtained by step 2.3.1, feeds the once purging selection that flotation device carries out flotation column cleaner tailings, adds water pulp density to adjust to 15-18%, is filled with air 0.45-0.5m in ore pulp
3/ m
2min, flotation 13 minutes, obtains flotation device and scans a concentrate products C 5 and scan a product from failing C6, scans a concentrate products C 5 and returns vertical mixing mill and regrind;
2.3.4 flotation device is scanned: the product from failing C6 obtained by step 2.3.3, feeds to scan two flotation devices and sort, and adds water pulp density to adjust to 13-15%, is filled with air 0.35m in ore pulp
3/ m
2min, flotation 10-11 minute, obtain scanning two concentrate products C 7 and scanning product from failing C8, C7 product returns to feed in order scans a flotation device.
The C8 product of output is as system true tailings.Through sorting of this technological process, flotation column concentrate C3 product send smelting as qualified concentrate containing together with A1, and C8 is system true tailings, after concentrated, deliver to tailings reservoir for piling.
The beneficiation method of a kind of sulphide ore of the present invention, its innovation point:
1, adopt post machine combined recovery mode by ultra-fine, microfine valuable metal, analyze foam from floatation kinetics more stable, target minreal and bubble contact are more abundant, can improve the operation recovery 5-10 percentage point of chats.
2, the vertical mixing mill of grinding column machine combined process flow is to grind stripping, weaken the effect impacted and shear, make material keep original lattice shape to greatest extent, avoid overground while can ensure target minreal fineness can provide best ore grinding grade for flotation column again; Flotation column plays it and sub-elects high-quality concentrate to the high sorting result characteristic of fine mineral; Meanwhile, the micro-size fraction mineral dissociating bad enter flotation device and scan, and then after regrinding, reenter flotation column, realize throwing tail, ensure that whole operation has the higher sorting rate of recovery.
3, flotation device-flotation column New process combining breaches the traditional mode of domestic and international hydrometallurgy or degree of depth flotation fetching portion high-quality molybdenum concntrate, flotation column is good to micro-size fraction recovering effect, flotation device supplements coarse fraction or intergrowth and reclaims, thus obtaining the concentrate of high-grade, high-recovery, the sorting realizing flotation column one flotation device is had complementary advantages.Recovery target minreal is thinner and embedding cloth is uneven mineral have absolute predominance.
4, while target minreal fully realizes fineness requirement, mineral surfaces is cleaned, innovate a grinding machine and produce multiple effect, especially the little medium ball adopted, quick grinding flotation concentrate, chats or mine tailing, wash the impurity of valuable mineral surface adhesion by rubbing with the hands, sort environment for flotation provides good, significantly improve concentrate grade and the rate of recovery.
5, control the technical parameter of each setting, determine the technical parameter of each operation when adaptation to end mineral sort requirement, be more conducive to valuable metal recovery.Can according to the ore grinding time of different grade demand modeling vertical mixing mills.The granularity of general Ball-stirring mill should be 20 ~ 30 times of feeding granularity F80; When sulphide ore ore grinding, this best solid weight concentration is between 55% ~ 65%; Vertical stirring mill medium volume loadings when not overflow is 80% time, and the consumption of useful load larger kinetic energy is lower.Flotation column feed ore concentration controls 25% ~ 38%, aeration quantity 26 ~ 35m
3/ min, the blowing pressure remains between 0.8 ~ 1.2MPa, and froth bed thickness is 50-300mm.Flotation device feed ore concentration is at 18%-25%, and depth of foam remains on 60-120mm.Medicament adds and mog is determined according to concrete ore deposit property.
Embodiment 1---the application of copper-sulphide ores is selected in difficulty
Raw ore is 0.80% containing copper grade, and copper is that oxide and sulphided form are present in ore respectively, and wherein copper sulfide accounts for 74.48% of metal rate, and cupric oxide accounts for 25.52%, therefore this ore deposit belongs to copper-sulphide ores.Chalcopyrite is the copper mineral that in this ore, content is the highest, how in xenomorphic granular, and the gangue mineral symbiosis such as normal and calcite, parcel partly wraps up calcite, and in veiny, veiny disseminated distributes; Part and tetrahedrite symbiosis, the phenomenon of visible tetrahedrite explanation chalcopyrite; Part edge alteration becomes vitreous copper.Normal embedding gangue mineral and pyrite, the zincblende being furnished with particulate in coarse grain chalcopyrite, the normal and tight symbiosis of gangue mineral of particulate chalcopyrite, embedding raw border are very complicated.In ore, chalcopyrite disseminated grain size is extremely uneven, and the disseminated grain size of most chalcopyrite is 0.02 ~ 0.5mm, and minimum is 0.001mm, and maximum particle size can reach 1.8mm.In ore, bornite is containing 0.11%, bornite is secondary sulphide ore, and also many in xenomorphic granular and symbiosis such as normal and dolomites, being filled in idiomorphic granular dolomite asks, normal is veiny disseminated, the distribution of sparse disseminated, and visible part bornite edge alteration becomes covellite.Bornite granularity is generally at about 0.03 ~ 0.3mm, and minimum is 0.001mm, maximum 1.0mm.Pyrite, marcasite are of paramount importance pyrites in this ore, the two normal closely symbiosis.In ore, pyritous disseminated grain size is uneven, and pyritous disseminated grain size is general comparatively thick, normal in irregular embedding cloth in gangue mineral, and marcasite euhedral degree is poor, and disseminated grain size is thinner.The relation of these two kinds of mineral and other sulfide is also quite close.
1, material prepares
Above copper-bearing mineral, after one section sorts, obtains one section of coarse granule concentrate A1 and section product from failing A2; A1 metal content, 10.66% ~ 16.85%, send smelting procedure together with the concentrate after sorting with grinding column machine technique, and one section of mine tailing A2 raw material enters grinding column machine associating Beneficiation flowsheet.
2 grinding column machines are combined and are sorted
2.1 stock grading
The mine tailing A2 sorted one section carries out scouring and controls classification, obtain-400 order content reach 95 ~ 98% meet the material B1 that flotation column sorts requirement, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=38 μm, enters control classification; B1 is as flotation column raw material.
2.2 dosings, size mixing and stir
The qualified products B1 that step 2.1 vertical mixing mill prepares is fed tank diameter, and lime solution adds 500 ~ 1000g/t; Add water and the concentration of ore pulp adjusted to 25 ~ 30%, add adjusting agent vulcanized sodium 100g/t, waterglass 200g/t, collecting agent butyl xanthate 10g/t+ aerofloat 226 50g/t, foaming agent 2# oil 10g/t, then stir
5minute, obtain flotation column to ore deposit B3;
2.3 sort
2.3.1 flotation column selected: two sections of ore pulp B1 step 2.2 obtained, feed flotation column and carry out concentrate enrichment and sort, in ore pulp, pour air, aeration quantity remains on 26m
3/ min, implements foam spray, leaching quantity 1m
3/ h, froth bed THICKNESS CONTROL, at 150mm, sorts 10 minutes time, obtains a selected copper concentrate products C 1 and flotation column product from failing C2;
2.3.2 flotation column selected two: the selected copper concentrate product D1 obtained by step 2.3.1, feed essence and sweep two flotation columns and carry out concentrate enrichment, in ore pulp, pour air, aeration quantity remains on 35m
3/ min, implements foam spray, leaching quantity 1.5m
3/ h, froth bed THICKNESS CONTROL, at 400mm, sorts 8 minutes time, and copper concentrate products C 3, the C4 product obtaining selected two product from failing C4 and particulate returns in order and feeds a selected flotation column;
2.3.3 flotation device scans one: the flotation column product from failing C2 obtained by step 2.3.1, feeds the once purging selection that flotation device carries out flotation column cleaner tailings, adds water pulp density to adjust to 18%, is filled with air 0.5m in ore pulp
3/ m
2min, flotation 13 minutes, obtains flotation device and scans a concentrate products C 5 and scan a product from failing C6, scans a concentrate products C 5 and returns vertical mixing mill and regrind;
2.3.4 flotation device is scanned: the product from failing C6 obtained by step 2.3.3, feeds to scan two flotation devices and sort, and adds water pulp density to adjust to 15%, is filled with air 0.35m in ore pulp
3/ m
2min, flotation 10 minutes, obtain scanning two concentrate products C 7 and scanning product from failing C8, C7 product returns to feed in order scans a flotation device.
The C8 product of output is as system true tailings.Through sorting of this technological process, flotation column concentrate C3 product, copper grade send smelting as qualified concentrate containing more than 8.2% together with A1, and C8 is system true tailings, and copper grade, lower than 0.17%, delivers to tailings reservoir for piling after concentrated.
By this example compared with common procedure, mog brings up to-400 heights of eye in 95% time by original-200 orders, concentrate grade and the rate of recovery are all relatively more satisfactory, the Ore performance that this is complicated with ore symbiosis, the disseminated grain size of copper is really very thin and ore technology mineralogical study result are consistent, also demonstrate advance and the economic worth of grinding column machine associating flotation flowsheet.
In the present embodiment, sorting through the inventive method the copper concentrate product copper grade obtained is 8.2%; Combining Floatation Concentrate Grade through grinding column machine is 8.2%, and tailings grade is 0.17%, and selected mine slurry grade is 0.35%.The rate of recovery of grinding column machine operation copper is then 52.52%.Computational process is:
Explanation to the rate of recovery calculates: the percentage referring to this substance weight in the weight of metal in concentrate product or other useful constituent and raw ore.The rate of recovery is important mineral processing index, it reflects metal in ore dressing process, the recovery degree of nonmetal or other useful component and technique of preparing level, management work quality.The rate of recovery calculates (all applicable to whole ore dressing process and any stage, an operation)
In formula: α ... head grade (%) β ... concentrate grade (%)
θ ... tailings grade (%) ε ... the rate of recovery (%)
Q
kconcentrate output (t) Q
0raw ore amount (t)
In actual production, usually use head grade, concentrate grade, tailings grade to calculate recovery rate in ore-dressing.
Embodiment 2---the application in molybdenum ore sorts
Raw ore is 0.43% containing molybdenum grade, and the molybdenum distributive law in sulfide is up to 94.85%.Grain size analysis is connect through mineral, from determining degree of dissociation result, + 74 μm of grade material molybdenite liberation degree of minerals only have 70.7%, only just can reach at one 32 μm of grade molybdenites dissociate completely (+32 μm of grade molybdenite liberation degree of minerals amount to 98.O%), illustrate if go for high-quality molybdenum concntrate, need higher mog.In these mineral after ultra-fine grade target minreal application grinding column machine beneficiation method, reach satisfied metal recovery effect.Application process comprises the following steps:
1 material prepares
Through one section of sorting operation output, one section of concentrate product A 1 and one section of product from failing A2; Molybdenum grade be 0.11% A2 as raw material enter grinding column machine associating Beneficiation flowsheet.
2 grinding column machines are combined and are sorted
2.1 materials prepare
The mine tailing A2 sorted one section carries out control classification scouring, classification, obtain-350 order content reach 90 ~ 95% meet the material B1 that flotation column sorts requirement, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=32 μm, enters control classification; B1 is as flotation column raw material.
2.2 dosings, size mixing and stir
The qualified products B1 that step 2.1 vertical mixing mill prepares is fed tank diameter, the amount of sodium sulfide of prefabricated dilution is added according to 32kg/t; Add water and the concentration of ore pulp adjusted to 25%, add adjusting agent waterglass 1.2Kg/t, foaming agent kerosene 2g/t, then stir
6minute, obtain flotation column to ore deposit B3;
2.3 sort
2.3.1 flotation column selected: two sections of ore pulp B3 step 2.2 obtained, feed flotation column and carry out concentrate enrichment and sort, in ore pulp, pour air, aeration quantity remains on 28m
3/ min, implements foam spray, leaching quantity 1.5m
3/ h, froth bed THICKNESS CONTROL, at 200mm, sorts 12 minutes time, obtains a selected molybdenum concntrate products C 1 and flotation column product from failing C2;
2.3.2 flotation column selected two: the selected molybdenum concntrate products C 1 obtained by step 2.3.1, feed essence and sweep two flotation columns and carry out concentrate enrichment, in ore pulp, pour air, aeration quantity remains on 32m
3/ min, implements foam spray, leaching quantity 1.8m
3/ h, froth bed THICKNESS CONTROL, at 400mm, sorts 8 minutes time, and molybdenum concntrate products C 3, the C4 product obtaining selected two product from failing C4 and particulate returns in order and feeds a selected flotation column;
2.3.3 flotation device scans one: the flotation column product from failing C2 obtained by step 2.3.1, feeds the once purging selection that flotation device carries out flotation column cleaner tailings, adds water pulp density to adjust to 15%, is filled with air 0.45m in ore pulp
3/ m
2min, flotation 13 minutes, obtains flotation device and scans a concentrate products C 5 and scan a product from failing C6, scans a concentrate products C 5 and returns vertical mixing mill and regrind;
2.3.4 flotation device is scanned: the product from failing C6 obtained by step 2.3.3, feeds to scan two flotation devices and sort, and adds water pulp density to adjust to 13%, is filled with air 0.35m in ore pulp
3/ m
2min, flotation 11 minutes, obtain scanning two concentrate product D7 and scanning product from failing C8, C7 product returns to feed in order scans a flotation device.
The C8 product of output is as system true tailings.Through sorting of this technological process, flotation column concentrate C3 product, molybdenum grade send smelting as qualified concentrate containing more than 16.9% together with B6, and C8 is system true tailings, and molybdenum grade, lower than 0.04%, delivers to tailings reservoir for piling after concentrated.
By this example compared with common procedure, mog brings up to-350 heights of eye in 90% time by original-200 orders, concentrate grade and the rate of recovery are all relatively more satisfactory, the Ore performance that this is complicated with ore symbiosis, the disseminated grain size of molybdenum is really very thin and ore technology mineralogical study result are consistent, also demonstrate advance and the economic worth of grinding column machine associating flotation flowsheet.
In the present embodiment, selected molybdenum grade is 0.11%, and sorting through the inventive method the Floatation Concentrate Grade obtained is 16.9%.Tailings grade is 0.04%, and as calculated, operation recovery is 63.78%.Computational process is:
The rate of recovery illustrates:: the percentage referring to this substance weight in the weight of metal in concentrate product or other useful constituent and raw ore.The rate of recovery is important mineral processing index, it reflects metal in ore dressing process, the recovery degree of nonmetal or other useful component and technique of preparing level, management work quality.The rate of recovery calculates (all applicable to whole ore dressing process and any stage, an operation)
In formula: α ... head grade (%) β ... concentrate grade (%)
θ ... tailings grade (%) ε ... the rate of recovery (%)
Q
kconcentrate output (t) Q
0raw ore amount (t)
In actual production, usually use head grade, concentrate grade, tailings grade to calculate recovery rate in ore-dressing.
Claims (6)
1. a beneficiation method for sulphide ore, the step of its ore dressing process comprises and being sorted through one section by sulfide mineral, obtains one section of coarse granule concentrate A1 and product from failing A2; Grinding column machine is adopted to carry out combining the process of sorting product from failing A2; It is characterized in that the step that the process of sorting combined by grinding column machine comprises:
(1) product from failing A2 is carried out scouring and controls classification, obtain-400 order content reach 95 ~ 98% meet the material B1 that flotation column sorts requirement, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=38 μm, enters control classification; B1 is as flotation column raw material;
(2) the material B1 that flotation column sorts requirement that meets prepared by the vertical mixing mill of step (1) feeds tank diameter, and lime solution adds 500 ~ 1000g/t; Add water and the concentration of ore pulp adjusted to 25 ~ 30%, add adjusting agent vulcanized sodium 30-100g/t, waterglass 100-200g/t, collecting agent butyl xanthate 10g/t+ aerofloat 226 50g/t, foaming agent 2# oil 10g/t, then stir
5minute, obtain flotation column to ore deposit B3;
(3) flotation column step (2) obtained is to ore deposit B3, and feed a selected flotation column and carry out concentrate enrichment and sort, in ore pulp, pour air, aeration quantity remains on 26-28m
3/ min, implements foam spray, leaching quantity 1-1.5m
3/ h, froth bed THICKNESS CONTROL, at 150-200mm, sorts time 10-12 minute, obtains a selected copper concentrate products C 1 and flotation column product from failing C2;
(4) the selected copper concentrate products C 1 step (3) obtained, feed selected two flotation columns and carry out concentrate enrichment and sort, in ore pulp, pour air, aeration quantity remains on 32-35m
3/ min, implements foam spray, leaching quantity 1.5-1.8m
3/ h, froth bed THICKNESS CONTROL, at 350-400mm, sorts time 8-10 minute, obtains the copper concentrate products C 3 of selected two product from failing C4 and particulate, and selected two product from failing C4 return in order and feed a selected flotation column;
(5) flotation column product from failing C2 step (3) obtained, feeds essence and sweeps the once purging selection that a flotation device carries out flotation column cleaner tailings, adds water pulp density to adjust to 15-18%, is filled with air 0.45-0.5m in ore pulp
3/ m
2min, flotation 13 minutes, obtains flotation device and scans a concentrate products C 5 and scan a product from failing C6, scans a concentrate products C 5 and returns vertical mixing mill and regrind;
(6) by the product from failing C6 that step (5) obtains, feed essence and sweep two flotation devices and sort, add water and pulp density adjusted to 13-15%, in ore pulp, be filled with air 0.35m
3/ m
2min, flotation 10-11 minute, obtain essence and sweep two concentrate products C 7 and scan product from failing C8, and essence is swept two concentrate products C 7 and returned in order and feed essence and sweep a flotation device.
2. the beneficiation method of a kind of sulphide ore according to claim 1, what it is characterized in that its output scans product from failing C8 as system true tailings.
3. the beneficiation method of a kind of sulphide ore according to claim 1, it is characterized in that combining sorting of the process of sorting through this, the copper concentrate products C 3 of particulate roughly send smelting as qualified together with coarse granule concentrate A1, and to scan product from failing C8 be system true tailings, after concentrated, deliver to tailings reservoir for piling.
4. the beneficiation method of a kind of sulphide ore according to claim 1, is characterized in that the granularity of Ball-stirring mill is 20 ~ 30 times of feeding granularity F80; When sulphide ore ore grinding, solid weight concentration is 55% ~ 65%; Vertical stirring mill medium volume loadings when not overflow is 80%.
5. the beneficiation method of a kind of sulphide ore according to claim 4, is characterized in that flotation column feed ore concentration controls as 25%-38%, aeration quantity 26-35m
3/ min, the blowing pressure remains between 0.8-1.2MPa, and froth bed thickness is 50-300mm.
6. the beneficiation method of a kind of sulphide ore according to claim 1, it is characterized in that flotation device feed ore concentration is at 18%-25%, depth of foam remains on 60-120mm.
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| CN114653471A (en) * | 2022-04-11 | 2022-06-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for improving beneficiation efficiency of copper sulfide ore |
| CN115025884B (en) * | 2022-05-07 | 2024-04-09 | 金川集团股份有限公司 | Machine-column joint selection process suitable for sorting fine-grained copper-nickel sulfide ores |
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Effective date of registration: 20240219 Address after: 737100 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Patentee after: Jinchuan Group Nickel Cobalt Co.,Ltd. Country or region after: China Address before: 737103 No. 98, Jinchuan Road, Jinchang, Gansu Patentee before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |