CN103736569A - Beneficiation method of sulphide ore - Google Patents
Beneficiation method of sulphide ore Download PDFInfo
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- CN103736569A CN103736569A CN201310677274.XA CN201310677274A CN103736569A CN 103736569 A CN103736569 A CN 103736569A CN 201310677274 A CN201310677274 A CN 201310677274A CN 103736569 A CN103736569 A CN 103736569A
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- 238000000034 method Methods 0.000 title claims abstract description 87
- 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 76
- 238000000227 grinding Methods 0.000 claims abstract description 43
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 229910052569 sulfide mineral Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000006260 foam Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000005273 aeration Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 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
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 239000004576 sand Substances 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
- 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
- 239000002245 particle Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 2
- 230000002000 scavenging effect Effects 0.000 claims 7
- 238000005507 spraying Methods 0.000 claims 2
- HQABUPZFAYXKJW-UHFFFAOYSA-O butylazanium Chemical compound CCCC[NH3+] HQABUPZFAYXKJW-UHFFFAOYSA-O 0.000 claims 1
- 239000008237 rinsing water Substances 0.000 claims 1
- 238000010408 sweeping Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 49
- 239000011707 mineral Substances 0.000 abstract description 49
- 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 7
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000011365 complex material Substances 0.000 abstract 1
- 239000010419 fine particle Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 84
- 238000002156 mixing Methods 0.000 description 19
- 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
- 238000002386 leaching Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 229910052951 chalcopyrite Inorganic materials 0.000 description 5
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 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
- 238000003801 milling Methods 0.000 description 4
- 238000010926 purge Methods 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
- 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 description 3
- 238000010494 dissociation reaction Methods 0.000 description 3
- 230000005593 dissociations Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 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
- 238000007664 blowing Methods 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
- 238000009826 distribution Methods 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 238000005265 energy consumption Methods 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
- 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
- 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
- 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
- 230000003116 impacting 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
- 238000009991 scouring Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 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
一种硫化矿的选矿方法，涉及一种硫化矿的选矿方法改进，特别是采用磨柱机联合浮选的方法。其选矿过程的步骤包括将硫化矿物经过一段选别，得到一段粗颗粒精矿A1和一段尾矿产品A2；其特征在于将一段尾矿A2采用磨柱机进行联合选别过程。本发明的方法，能有效克服嵌布粒度细、物质组成复杂的硫化矿在浮选过程中采用常规浮选法不能有效的回收的问题，将一段尾矿采用磨柱机进行联合选别过程，矿种中超细粒级目的矿物应用磨柱机选矿后，达到了满意的金属回收效果。
A beneficiation method of sulfide ore relates to an improvement of a beneficiation method of sulfide ore, in particular a method of combining column grinding and flotation. The steps of the beneficiation process include a stage of sorting sulfide minerals to obtain a section of coarse-grained concentrate A1 and a section of tailings product A2; the feature is that a section of tailings A2 is combined with a column grinder for the separation process. The method of the present invention can effectively overcome the problem that the sulfide ore with fine particle size and complex material composition cannot be effectively recovered by the conventional flotation method in the flotation process. After the ultra-fine-grained target minerals in the ore are beneficiated with a column grinder, a satisfactory metal recovery effect is achieved.
Description
Technical field
A beneficiation method for sulphide ore, the beneficiation method that relates 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 mining industry and produces the history of existing more than 150 year, and floatation process and theory also have a great development, and have formed the floatation process of various unique technology contents and various uses.
Along with the continuous exploitation utilization of mineral resources, it is more and more poorer that mineral resources become, poor, thin, assorted, the difficult future development of mineral resources trend, and difficulty selects the yield proportion of grandidierite increasing, and the disseminated grain size of valuable mineral is thin.The technological process that floatation is processed sulfide mineral is traditionally arranged to be that two stage grinding, two sections are roughly selected, repeatedly selected and coarse scan choosing, the outstanding feature of this class flow process is to access thinner product, can roughly grind and fine grinding at different grinding sections, and be 80%-200 order when requiring mog to be less than 0.15mm(), adopt stage grinding less expensive, and product granularity forms evenly, and it is few that hardness is crossed crushing phenomenon compared with large gangue mineral.But having fatefulue weakness, is also the common problem that current floatation exists, and is specially:
1, regrind after in fine fraction valuable metal can not well be recycled.Because fine-grained dissemination characteristic between the mineral of one section of thick, selected mine tailing has determined to carry out Ultrafine Grinding to ore, monomer whose is dissociated, can realize effective sorting of mineral.
2, valuable metal disseminated grain size is thinner, the normal technology enriching and recovering of regrinding and sorting that adopts.Valuable metal sulfide is generally tiny granular or irregular granular aggregate embedding and is distributed in gangue mineral, even part is closely connected with oxide ore and with it, form relict texture, network and particulate disseminated structure, multi-metal sulfide or mutually form 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 can be high, beneficiation reagent weakens the solid hydrophobic effect of the parent of object mineral in this case, the character of swimming of object mineral and gangue mineral is very approaching, be difficult to effectively separation, it is very outstanding that the contradictory relation of concentrate grade and the rate of recovery at this time seems, makes the recovery utilization rate of superfine granule metal sulfide mineral lower.The effectively sorting because object mineral and associated mineral disseminated grain size are too thin such as domestic existing a large amount of gold mines, weakly magnetic iron ore, manganese ore, phosphorus ore, bauxite at present.
3, in flotation, the processing of chats is problem comparatively complicated in floatation process always, does not have new theory and process application in industrial practice, to obtain the example of achievement in research.In general, during application floatation process, according to the mineral composition of chats, mainly contain two kinds of disposal options, a kind of is directly to return to last flow process, and another kind is independent regrinding and reconcentration, thereby obtains the second qualified concentrate containing.These two kinds of modes are processed chats and can be improved comprehensive recovery to a certain extent, but simultaneously a large amount of chats in flotation flowsheet, circulate 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 that affects sorting operation comprehensive recovery.
Summary of the invention
Object of the present invention is exactly the deficiency existing for above-mentioned prior art, provides a kind of and can effectively overcome that disseminated grain size is thin, material forms the beneficiation method that complicated sulphide ore adopts the sulphide ore of the problem that conventional flotation method can not effectively 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 sulfide mineral is sorted through one section, obtains one section of coarse granule concentrate A1 and one section of product from failing A2; It is characterized in that one section of mine tailing A2 to adopt grinding column machine to combine the process of sorting.
The beneficiation method of a kind of sulphide ore of the present invention, is characterized in that grinding column machine combines the step of the process of sorting and comprise:
(1) one section of mine tailing A2 sorting is cleaned and control classification, obtain-400 order content and reach 95～98% the material B1 that flotation column sorts requirement that meets, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=38 μ m, enters control classification; B1 is as flotation column raw material;
(2) the qualified products B1 vertical mixing mill of step (1) being prepared feeds tank diameter, and lime solution is added 500～1000g/t; Add water the concentration of ore pulp is adjusted to 25～30%, add adjusting agent vulcanized sodium 30-100g/t, waterglass 100-200g/t, collecting agent butyl xanthate 10 g/t+aerofloat 226 50 g/t, foaming agent 2# oil 10 g/t, then stir
5minute, obtain flotation column to ore deposit B3;
(3) two sections of ore pulp B1 that step (2) obtained, feed flotation column and carry out concentrate enrichment and sort, and in ore pulp, pour air, and 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) a selected copper concentrate product D1 who step (3) is obtained, feeds essence and sweeps two flotation columns and carry out concentrate enrichment, in ore pulp, pours air, and 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 C4 product returns in order and feeds a selected flotation column;
(5) flotation column product from failing C2 step 3 being obtained, feeds the once purging selection that flotation device carries out flotation column cleaner tailings, adds water pulp density is adjusted to 15-18%, in ore pulp, is filled with air 0.45-0.5m
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 to vertical mixing mill and regrind;
(6) product from failing C6 step (5) being obtained, feeds and scans two flotation devices and sort, and adds water pulp density is adjusted to 13-15%, in ore pulp, is filled with air 0.35m
3/ m
2min, flotation 10-11 minute, obtains scanning two concentrate products C 7 and scans product from failing C8, and 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 together with A1 as qualified concentrate containing, and C8 is system true tailings, after concentrated, delivers to tailings reservoir for piling.
The beneficiation method of a kind of sulphide ore of the present invention, the granularity that it is characterized in that 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 useful load in the situation that of not overflow is 80%.
The beneficiation method of a kind of sulphide ore of the present invention, is characterized in that it is 25%-38% that flotation column feed ore concentration is controlled, aeration quantity 26-35 m
3/ min, the blowing pressure remains between 0.8-1.2 MPa, and froth bed thickness is 50-300mm.
The beneficiation method of a kind of sulphide ore of the present invention, is characterized in that flotation device feed ore concentration is at 18%-25%, and 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, give full play in flow process key equipment vertical mixing mill, flotation column and flotation device characteristic advantage separately, mutually form supporting technical conditions, can effectively solve sulfide mineral and associated mineral disseminated grain size too thin, be easy to overground and adopt the conventional flotation cannot the low problem of the efficiency of separation.
2,, in the fine grinding of object mineral or Ultrafine Grinding operation, when adopting conventional ore grinding technology (as ball mill) to realize the monomer dissociation of 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, many valuable minerals are lost in sludge.And vertical mixing mill production efficiency is high, be the more than ten times of ball mill, energy resource consumption is 1/4 of ball mill, when realizing Ultrafine Grinding, overground rate can be reduced to below 2%, shockproof operating type more can meet the requirement that environmental protection is produced.
3, in this technique, flotation column is simple in structure, and space availability ratio is high, there is no moving component noiselessness, and operating environment is good, can be described as safe low energy consumption operation; Sufficient because of its bubble-particle flotation interface, concentration ratio is large, the rate of recovery is high, flotation speed is fast, and flotation flowsheet is simplified 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 object mineral completely; The following recovery rate of valuable metals of-10 μ m is brought up to more than 50% by 30% of general grading process, and grinding column machine combines that to sort flow process effect remarkable.This dressing method is applied to sorting of copper sulfide gold mine, compares with the dressing method of ball mill+common flotation device, and Cu Concentrate Grade has improved 2%, and copper, gold recovery improve 0.1%, 1.8%.
Accompanying drawing explanation
Fig. 1 is principle process chart of the present invention.
The specific embodiment
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 two examples that embodiments of the present invention are not limited to lift in the present invention.
A beneficiation method for sulphide ore, the step of its ore dressing process comprises sulfide mineral is sorted through one section, obtains one section of coarse granule concentrate A1 and one section of product from failing A2; Adopt grinding column machine to combine the process of sorting one section of mine tailing A2, in mineral, after ultra-fine grade object mineral application grinding column machine beneficiation method, reached satisfied metal recovery effect.
Specifically comprise the following steps:
1, material is prepared
Mineral, after one section sorts, obtain one section of coarse granule concentrate A1 and one section of 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 and combines and sort flow process.
2 grinding column machines are combined and are sorted
2.1 stock grading
One section of mine tailing A2 sorting is cleaned and controls classification, obtain-400 order content and reach 95～98% the material B1 that flotation column sorts requirement that meets, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=38 μ m, 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 is prepared feeds tank diameter, and lime solution is added 500～1000g/t; Add water the concentration of ore pulp is adjusted to 25～30%, add adjusting agent vulcanized sodium 30-100g/t, waterglass 100-200g/t, collecting agent butyl xanthate 10 g/t+aerofloat 226 50 g/t, foaming agent 2# oil 10 g/t, then stir
5minute, obtain flotation column to ore deposit B3;
2.3 sort
2.3.1 flotation column selected one: two sections of ore pulp B1 that step 2.2 is obtained, and 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 that step 2.3.1 is obtained, and 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, obtains the copper concentrate products C 3 of selected two product from failing C4 and particulate, and C4 product returns in order and feeds a selected flotation column;
2.3.3 flotation device scans one: the flotation column product from failing C2 that step 2.3.1 is obtained, feed the once purging selection that flotation device carries out flotation column cleaner tailings, and add water pulp density is adjusted to 15-18%, in ore pulp, be filled with air 0.45-0.5m
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 to vertical mixing mill and regrind;
2.3.4 flotation device is scanned: the product from failing C6 that step 2.3.3 is obtained, and feed and scan two flotation devices and sort, add water pulp density is adjusted to 13-15%, in ore pulp, be filled with air 0.35m
3/ m
2min, flotation 10-11 minute, obtains scanning two concentrate products C 7 and scans product from failing C8, and 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 together with A1 as qualified concentrate containing, and C8 is system true tailings, after concentrated, delivers 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 more stable from floatation kinetics, object mineral contact more abundant with bubble, can improve the operation recovery 5-10 percentage point of chats.
2, the vertical mixing mill of grinding column machine combined process flow take mill peel off as main, weaken the effect of impacting and shearing, make to greatest extent material keep original lattice shape, avoiding in overground guaranteeing that the fineness of object mineral can provide best ore grinding grade for flotation column again; Flotation column is brought into play its high sorting result characteristic to fine mineral and is sub-elected high-quality concentrate; Meanwhile, the micro-size fraction mineral that dissociate bad enter flotation device and scan, and then after regrinding, reenter flotation column, realize and throw tail, guarantee that whole operation has the higher sorting rate of recovery.
3, flotation device-flotation column New process combining has been broken through and with hydrometallurgy or degree of depth flotation, has been obtained the traditional mode of the high-quality molybdenum concntrate of part both at home and abroad, flotation column is good to micro-size fraction recovering effect, flotation device supplements recovery to coarse fraction or intergrowth, thereby obtain the concentrate of high-grade, high-recovery, realize the sorting of flotation column one flotation device and have complementary advantages.Reclaim the thin and inhomogeneous mineral of embedding cloth of object mineral and have absolute predominance.
4, when object mineral are fully realized fineness requirement, mineral surfaces is cleaned, innovate a grinding machine and produced multiple effect, especially the little medium ball adopting, grind fast flotation concentrate, chats or mine tailing, wash the impurity of valuable mineral surface adhesion by rubbing with the hands, for flotation provides the good environment that sorts, significantly improve concentrate grade and the rate of recovery.
5, control the technical parameter of each setting, in the situation that adaptation to end mineral sort requirement, determine the technical parameter of each operation, be more conducive to valuable metal recovery.Can control according to different grade demands the ore grinding time of vertical mixing mill.The general granularity that stirs 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 useful load in the situation that of not overflow is 80% time, and the larger kinetic energy consumption of useful load is lower.Flotation column feed ore concentration is controlled at 25% ~ 38%, aeration quantity 26 ~ 35 m
3/ min, the blowing pressure remains between 0.8 ~ 1.2 MPa, 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---in difficulty, select the application of copper-sulphide ores
Raw ore is 0.80% containing copper grade, and copper is respectively oxide and sulphided form is present in ore, 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.The gangue mineral symbiosis such as chalcopyrite is the highest copper mineral of content in this ore, is xenomorphic granular more, normal and calcite, parcel partly wraps up calcite, is veiny, the distribution of veiny disseminated; Part and tetrahedrite symbiosis, the phenomenon of visible tetrahedrite explanation chalcopyrite; Part edge alteration becomes vitreous copper.In coarse grain chalcopyrite, normal embedding is furnished with the gangue mineral of particulate and pyrite, zincblende, particulate chalcopyrite normal with the tight symbiosis of gangue mineral, that border is given birth in embedding is very complicated.In ore, chalcopyrite disseminated grain size is extremely inhomogeneous, and the disseminated grain size of most chalcopyrites is 0.02～0.5mm, and minimum is 0.001 mm, and maximum particle size can reach 1.8 mm.In ore, bornite is containing 0.11%, bornite is secondary sulphide ore, is also the symbiosis such as xenomorphic granular and normal and dolomite more, and filling is asked in idiomorphic granular dolomite, often be veiny disseminated, the distribution of sparse disseminated, visible part bornite edge alteration becomes covellite.Bornite granularity is generally in 0.03～0.3 mm left and right, and minimum is 0.001mm, maximum 1.0 mm.Pyrite, marcasite are of paramount importance pyrites in this ore, the two normal closely symbiosis.In ore, pyritous disseminated grain size is inhomogeneous, and pyritous disseminated grain size is generally thicker, be often 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 is prepared
Above copper-bearing mineral, after one section sorts, obtains one section of coarse granule concentrate A1 and one section of 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 and combines and sort flow process.
2 grinding column machines are combined and are sorted
2.1 stock grading
One section of mine tailing A2 sorting is cleaned and controls classification, obtain-400 order content and reach 95～98% the material B1 that flotation column sorts requirement that meets, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=38 μ m, 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 is prepared feeds tank diameter, and lime solution is added 500～1000g/t; Add water the concentration of ore pulp is adjusted to 25～30%, add adjusting agent vulcanized sodium 100g/t, waterglass 200g/t, collecting agent butyl xanthate 10 g/t+aerofloat 226 50 g/t, foaming agent 2# oil 10 g/t, then stir
5minute, obtain flotation column to ore deposit B3;
2.3 sort
2.3.1 flotation column selected one: two sections of ore pulp B1 that step 2.2 is obtained, and 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 that step 2.3.1 is obtained, and 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, obtains the copper concentrate products C 3 of selected two product from failing C4 and particulate, and C4 product returns in order and feeds a selected flotation column;
2.3.3 flotation device scans one: the flotation column product from failing C2 that step 2.3.1 is obtained, feed the once purging selection that flotation device carries out flotation column cleaner tailings, and add water pulp density is adjusted to 18%, in ore pulp, be filled with air 0.5m
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 to vertical mixing mill and regrind;
2.3.4 flotation device is scanned: the product from failing C6 that step 2.3.3 is obtained, and feed and scan two flotation devices and sort, add water pulp density is adjusted to 15%, in ore pulp, be filled with air 0.35m
3/ m
2min, flotation 10 minutes, obtains scanning two concentrate products C 7 and scans product from failing C8, and 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 more than 8.2% is sending smelting together with A1 as qualified concentrate containing, and C8 is system true tailings, copper grade, lower than 0.17%, is delivered to tailings reservoir for piling after concentrated.
This example is compared with common flow process, mog is brought 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, this is complicated with ore symbiosis, the disseminated grain size of copper is really very thin ore feature and ore technology mineralogical study result are consistent, have also proved advance and the economic worth of grinding column machine associating flotation flowsheet.
In the present embodiment, through the inventive method, sorting the copper concentrate product copper grade obtaining is 8.2%; Through grinding column machine associating Floatation Concentrate Grade, be 8.2%, tailings grade is 0.17%, and selected mine slurry grade is 0.35%.The rate of recovery of grinding column machine operation copper is 52.52%.Computational process is:
The explanation that the rate of recovery is calculated: the percentage that refers 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, and it has reflected the recovery degree of metal in ore dressing process, nonmetal or other useful component and technique of preparing level, management work quality.The rate of recovery is calculated (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, conventionally 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%.Through mineral, connect grain size analysis, from determining degree of dissociation result, + 74 μ m grade material molybdenite liberation degree of minerals only have 70.7%, only at one 32 μ m grade molybdenites, just can reach completely dissociate (+32 μ m 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 object mineral application grinding column machine beneficiation method, reached satisfied metal recovery effect.Application process comprises the following steps:
1 material is prepared
Through one section of concentrate products A 1 of one section of sorting operation output and one section of product from failing A2; To be 0.11% A2 enter grinding column machine as raw material to molybdenum grade combines and sort flow process.
2 grinding column machines are combined and are sorted
2.1 materials are prepared
One section of mine tailing A2 sorting is controlled to classification scouring, classification, obtain-350 order content and reach 90～95% the material B1 that flotation column sorts requirement that meets, control classification sand setting and enter vertical mixing mill fine grinding, obtain P
80the ore milling product B2 of=32 μ m, 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 is prepared feeds tank diameter, and the amount of sodium sulfide of prefabricated dilution is added according to 32kg/t; Add water the concentration of ore pulp is 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 one: two sections of ore pulp B3 that step 2.2 is obtained, and 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 that step 2.3.1 is obtained, and 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, obtains the molybdenum concntrate products C 3 of selected two product from failing C4 and particulate, and C4 product returns in order and feeds a selected flotation column;
2.3.3 flotation device scans one: the flotation column product from failing C2 that step 2.3.1 is obtained, feed the once purging selection that flotation device carries out flotation column cleaner tailings, and add water pulp density is adjusted to 15%, in ore pulp, be filled with air 0.45m
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 to vertical mixing mill and regrind;
2.3.4 flotation device is scanned: the product from failing C6 that step 2.3.3 is obtained, and feed and scan two flotation devices and sort, add water pulp density is adjusted to 13%, in ore pulp, be filled with air 0.35m
3/ m
2min, flotation 11 minutes, obtains scanning two concentrate product D7 and scans product from failing C8, and 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 more than 16.9% is being sent smelting together with B6 as qualified concentrate containing, and C8 is system true tailings, molybdenum grade, lower than 0.04%, is delivered to tailings reservoir for piling after concentrated.
This example is compared with common flow process, mog is brought 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, this is complicated with ore symbiosis, the disseminated grain size of molybdenum is really very thin ore feature and ore technology mineralogical study result are consistent, have also proved advance and the economic worth of grinding column machine associating flotation flowsheet.
In the present embodiment, selected molybdenum grade is 0.11%, and through the inventive method, sorting the Floatation Concentrate Grade obtaining is 16.9%, and tailings grade is 0.04%, and as calculated, operation recovery is 63.78%.Computational process is:
Rate of recovery explanation: the percentage that refers 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, and it has reflected the recovery degree of metal in ore dressing process, nonmetal or other useful component and technique of preparing level, management work quality.The rate of recovery is calculated (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, conventionally use head grade, concentrate grade, tailings grade to calculate recovery rate in ore-dressing.
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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 | A method for improving beneficiation efficiency of copper sulfide ore |
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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 |
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