CN117943210B - Flotation separation inhibitor for chalcopyrite and pyrite, preparation method and application - Google Patents
Flotation separation inhibitor for chalcopyrite and pyrite, preparation method and applicationInfo
- Publication number
- CN117943210B CN117943210B CN202410346769.2A CN202410346769A CN117943210B CN 117943210 B CN117943210 B CN 117943210B CN 202410346769 A CN202410346769 A CN 202410346769A CN 117943210 B CN117943210 B CN 117943210B
- Authority
- CN
- China
- Prior art keywords
- flotation
- chalcopyrite
- pyrite
- concentrate
- inhibitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005188 flotation Methods 0.000 title claims abstract description 106
- 229910052683 pyrite Inorganic materials 0.000 title claims abstract description 60
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000011028 pyrite Substances 0.000 title claims abstract description 60
- 238000000926 separation method Methods 0.000 title claims abstract description 53
- 239000003112 inhibitor Substances 0.000 title claims abstract description 49
- 229910052951 chalcopyrite Inorganic materials 0.000 title claims abstract description 48
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000012141 concentrate Substances 0.000 claims abstract description 72
- 230000002000 scavenging effect Effects 0.000 claims abstract description 57
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052802 copper Inorganic materials 0.000 claims abstract description 53
- 239000010949 copper Substances 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 27
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 21
- 239000011707 mineral Substances 0.000 claims abstract description 21
- 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 abstract description 18
- 239000011734 sodium Substances 0.000 claims abstract description 18
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 18
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 17
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 17
- 239000004571 lime Substances 0.000 claims abstract description 17
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 7
- -1 tert-butyl propylene xanthate Chemical compound 0.000 claims description 31
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 27
- 239000003153 chemical reaction reagent Substances 0.000 claims description 23
- 239000012991 xanthate Substances 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 15
- 239000004088 foaming agent Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 11
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 11
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 claims description 9
- 229950004394 ditiocarb Drugs 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- HWASUGAGLDBXHL-UHFFFAOYSA-K trisodium;1,3,5-triazanidacyclohexane-2,4,6-trione Chemical compound [Na+].[Na+].[Na+].[O-]C1=NC([O-])=NC([O-])=N1 HWASUGAGLDBXHL-UHFFFAOYSA-K 0.000 claims description 8
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000010665 pine oil Substances 0.000 claims description 6
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- QBILQWNTFUSQBC-UHFFFAOYSA-N sodium;1,3,5-triazinane-2,4,6-trione Chemical compound [Na].O=C1NC(=O)NC(=O)N1 QBILQWNTFUSQBC-UHFFFAOYSA-N 0.000 claims description 5
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 4
- 241001417527 Pempheridae Species 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 229960000411 camphor oil Drugs 0.000 claims description 3
- 239000010624 camphor oil Substances 0.000 claims description 3
- 239000010642 eucalyptus oil Substances 0.000 claims description 3
- 229940044949 eucalyptus oil Drugs 0.000 claims description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 239000001095 magnesium carbonate Substances 0.000 claims description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 229960001631 carbomer Drugs 0.000 claims description 2
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 150000005323 carbonate salts Chemical class 0.000 claims 1
- 238000010408 sweeping Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 abstract 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 235000010755 mineral Nutrition 0.000 description 17
- 239000000047 product Substances 0.000 description 16
- 101100399296 Mus musculus Lime1 gene Proteins 0.000 description 15
- 239000002994 raw material Substances 0.000 description 10
- 239000002516 radical scavenger Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000008396 flotation agent Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 3
- 229910001431 copper ion Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- QHFDHWJHIAVELW-UHFFFAOYSA-M sodium;4,6-dioxo-1h-1,3,5-triazin-2-olate Chemical compound [Na+].[O-]C1=NC(=O)NC(=O)N1 QHFDHWJHIAVELW-UHFFFAOYSA-M 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 235000011181 potassium carbonates Nutrition 0.000 description 2
- 229910052952 pyrrhotite Inorganic materials 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 238000001238 wet grinding Methods 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052961 molybdenite Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052627 muscovite Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004094 preconcentration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical group [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Abstract
The invention provides a flotation separation inhibitor for chalcopyrite and pyrite, a preparation method and application thereof, and relates to the technical field of mineral separation. Specifically, the flotation inhibitor comprises sodium carbo-cyanuric acid, alkaline thiourea, alkaline polymeric iron and carbonate; when the flotation separation of the chalcopyrite and the pyrite is carried out, firstly, the minerals are ground and classified, then, the flotation separation is carried out by the steps of primary roughing, secondary scavenging and secondary concentration, and the copper concentrate product is obtained after collection. The method can solve the defects of poor copper-iron separation effect, low copper recovery rate caused by lime addition and the like in the flotation separation process of the chalcopyrite and the pyrite; the flotation process can realize the copper recovery rate of 92.48% in copper concentrate, and has good application prospect.
Description
Technical Field
The invention relates to the technical field of mineral separation, in particular to a flotation separation inhibitor for chalcopyrite and pyrite, a preparation method and application thereof.
Background
Copper is an important nonferrous metal resource and has been widely used in the fields of electric power, traffic, new energy materials, photovoltaic industry and the like. As economies continue to develop, the demand for copper increases. With the rapid development of high-quality copper resources, the recovery of low-grade refractory copper resources is increasingly concerned. Chalcopyrite as the main copper-containing mineral is often co-present with pyrite, which increases the difficulty of obtaining high quality copper concentrates. Currently, chalcopyrite and pyrite are commonly separated by flotation, and flotation separation mainly faces the following difficulties: (1) After the chalcopyrite is dissociated, copper ions dissolved into ore pulp on the surface of the chalcopyrite are easy to generate an activating effect on the pyrite, so that the floatability of the pyrite is greatly improved; (2) A large amount of lime is added in the conventional copper-sulfur separation, so that the copper pyrite is influenced while the upward floating of pyrite is inhibited under the high alkaline condition, and the recovery rate of copper is reduced; (3) A large amount of lime is added in conventional copper-sulfur separation, so that a large amount of calcium ions exist in the flotation ore pulp, equipment or pipelines are easy to scale, and the flotation efficiency is reduced.
In view of this, the present invention has been made.
Disclosure of Invention
The first object of the invention is to provide a flotation separation inhibitor for chalcopyrite and pyrite, which is mainly used for solving the defects that the conventional flotation agent has poor copper-iron separation effect and low copper recovery rate caused by lime addition in the process of carrying out the flotation separation of chalcopyrite and pyrite.
The second purpose of the invention is to provide a composite flotation reagent for chalcopyrite and pyrite, which can effectively solve the problem of separation of copper and sulfur.
The third object of the invention is to provide a flotation separation method of chalcopyrite and pyrite, which adopts specific flotation agents and flotation process methods, and obtains copper concentrate products through grinding, classification, one-time roughing, two-time scavenging and two-time concentration.
In order to achieve the above object of the present invention, the following technical solutions are specifically adopted:
the flotation separation inhibitor for the chalcopyrite and the pyrite comprises the following components in parts by weight:
2-6 parts of sodium carbo-isocyanurate, 4-5 parts of sodium diethyl dithiocarbamate and 3-4 parts of carbonate;
Wherein the sodium carbomer cyanuric acid is prepared by high-temperature heat treatment of trisodium cyanurate.
A composite flotation reagent for chalcopyrite and pyrite, comprising the flotation separation inhibitor; and the compound flotation reagent further comprises a collector and a frother;
Wherein the collector comprises at least one of tert-butyl propylene xanthate, n-butyl propylene xanthate and ethyl propylene xanthate; the foaming agent comprises at least one of pine oil, camphor oil or eucalyptus oil.
A method for separating chalcopyrite and pyrite by floatation adopts the composite floatation agent for the chalcopyrite and pyrite; the flotation separation method comprises the following steps:
(1) Grinding and classifying the mixed mineral aggregate of the chalcopyrite and the pyrite to obtain mixed mineral slurry;
(2) Adjusting the pH value of the mixed ore pulp to 9-10 by lime, and performing flotation to obtain copper concentrate; the flotation includes one rougher, two sweepers and two beneficiations.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention provides a novel organic inhibitor special for flotation separation of chalcopyrite and pyrite; the preparation method comprises the steps of mixing sodium carborundum cyanuric acid, sodium diethyl dithiocarbamate and carbonate; the sulfur bond (-SH) and the cyano (-CN) in the inhibitor are adsorbed on the surface of pyrite on one hand, so that the hydrophilicity of the pyrite can be enhanced, and the effect of a collector and the surface of the pyrite can be prevented; on the other hand, the film of the xanthate collecting agent formed on the surface of the pyrite can be dissolved. In addition, cyanide ions (-CN) can form complexes with the activated ions of pyrite in the pulp, such as copper ions and the like, to prevent the pyrite from being activated. Therefore, the inhibitor can form strong adsorption with copper ions and iron ions, and has strong selectivity; the grade of copper in the copper concentrate is 19.05% -20.08%, and the recovery rate is 91.39% -92.48%.
(2) The inhibitor of pyrite in the existing flotation separation process is mainly lime, and the organic inhibitor provided by the invention can realize low-alkalinity separation of pyrite and pyrite, so that the reduction of copper floating property in the high-alkalinity slurry environment caused by lime inhibitor and the negative influence on equipment caused by a calcium ion structure are avoided. The invention is mainly carried out under weak base condition, and the synergistic advantages of the inhibitor, the collector and the foaming agent in the flotation process are exerted by the combination of the medicaments, so that the high-efficiency separation of pyrite is realized in the aspects of the collection and the inhibition.
(3) The invention provides a flotation process method, which has simple process flow, can obtain better indexes through one roughing, two carefully selecting and two scavenging, and has good separation and recovery effects.
Detailed Description
The technical solution of the present invention will be clearly and completely described in conjunction with the specific embodiments, but it will be understood by those skilled in the art that the examples described below are some, but not all, examples of the present invention, and are intended to be illustrative only and should not be construed as limiting the scope of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. Furthermore, the terms first, "second," "1," "2," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
A first aspect of the present invention is to provide a flotation separation depressant for chalcopyrite and pyrite.
The flotation separation inhibitor for the chalcopyrite and the pyrite comprises the following components in parts by weight: 2-6 parts of sodium carbo-isocyanurate, 4-5 parts of sodium diethyl dithiocarbamate and 3-4 parts of carbonate.
As an optional embodiment, the parts by weight of the sodium carbo-cyanuric acid include, but are not limited to, any one or any two of the numerical intervals of 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5 and 6; the mass parts of the sodium diethyldithiocarbamate include any one or any two of numerical intervals consisting of 4, 4.2, 4.4, 4.5, 4.6, 4.8 and 5; the carbonate comprises any one or any two of numerical intervals consisting of 3, 3.2, 3.4, 3.5, 3.6, 3.8 and 4 in parts by weight.
The sodium carbo-cyanuric acid is prepared by high-temperature heat treatment of trisodium cyanurate.
As a preferred embodiment, the preparation method of the carbonized sodium cyanuric acid comprises the following steps: and carrying out high-temperature heat treatment on trisodium cyanurate (or referred to as sodium cyanurate) in a nitrogen atmosphere to obtain the carbonized sodium cyanurate.
As a more preferred embodiment, the high-temperature heat treatment includes: heating to 700-900 ℃ at a speed of 8-15 ℃ per minute, and keeping at constant temperature for 2-3 hours.
As an alternative embodiment, the temperature of the high temperature heat treatment includes, but is not limited to, any one or any two of 700, 725, 750, 775, 800, 825, 850, 875, 900 (°c); the constant temperature time of the high temperature heat treatment comprises any one or any two of numerical intervals consisting of 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9 and 3 (h).
As a more preferable embodiment, the trisodium cyanurate salt is dissolved by deionized water before the preparation of the carbonized sodium cyanurate, and the crystal powder of the trisodium cyanurate salt is obtained by vacuum drying after filtering an aqueous solution of the trisodium cyanurate salt; the crystal powder is used as a raw material for carbonization, and the homogeneous, dry and pure carbonized sodium tripolycyanate raw material can be effectively obtained through the high-temperature heat treatment process.
As a preferred embodiment, the carbonate comprises: at least one of sodium carbonate, potassium carbonate, calcium carbonate or basic magnesium carbonate. And the molecular formula of the basic magnesium carbonate in the invention is preferably (MgCO 3)4· Mg(OH)2· 5H2 O).
A second aspect of the invention is to provide a composite flotation reagent for chalcopyrite and pyrite.
The composite flotation reagent for chalcopyrite and pyrite comprises the flotation separation inhibitor in the first aspect; on the basis, the collector and the foaming agent are also included. Wherein the collector comprises at least one of tert-butyl propylene xanthate, n-butyl propylene xanthate and ethyl propylene xanthate.
As a preferred embodiment, the foaming agent includes at least one of pine oil, camphor oil or eucalyptus oil.
As a preferred embodiment, the collector consists of tert-butyl xanthogenate propylene ester, n-butyl xanthogenate propylene ester and ethyl xanthogenate propylene ester; or the collector consists of tert-butyl xanthogenate propylene ester and n-butyl xanthogenate propylene ester.
As a more preferred embodiment, when the collector consists of the above three components, the mass ratio of the tert-butyl xanthogenate propylene ester, the n-butyl xanthogenate propylene ester and the ethyl xanthogenate propylene ester is 1:1:1.
As a more preferred embodiment, when the collector consists of the above two components, the mass ratio of the tert-butyl xanthogenate propylene ester to the n-butyl xanthogenate propylene ester is 1: (1-2); including but not limited to 1:1. 1:1.2, 1:1.4, 1:1.5, 1:1.6, 1:1.8, 1:2 or any one or any two of the ratio intervals.
It should be noted that there is a better copper capture effect when the component amounts of the collector are in the preferred ratio interval described above, but it does not mean that the component amounts of the collector are and only the ratio selection described above; copper capture during chalcopyrite and pyrite can also be achieved when a combination of one or the other of the two components is employed alone, with only slightly less capture than the preferred embodiment described above.
A third aspect of the present invention is to provide a method of flotation separation of chalcopyrite and pyrite.
The method for the flotation separation of chalcopyrite and pyrite employs a composite flotation reagent as described in the second aspect. The flotation separation method comprises the following steps: (1) Grinding and classifying chalcopyrite and pyrite to prepare ore pulp to be floated; (2) And separating by a flotation process of one roughing, two scavenging and two concentrating, and collecting to obtain a copper concentrate product.
As a preferred embodiment, the chalcopyrite and pyrite raw materials employed in the present invention have the following properties, calculated on the mixed mineral material to be treated: copper content is 0.41% -0.48%, sulfur content is 1.52% -3.85%, and gangue comprises quartz, biotite, chlorite, potash feldspar and the like.
Grinding and classifying the mixed mineral aggregate of the chalcopyrite and the pyrite to obtain mixed ore pulp.
As a preferred embodiment, the grinding may employ, for example, dry grinding, wet grinding, or the like; in a more preferable case, wet grinding is adopted, and the grinding mode of stirring grinding is carried out by adding the ore and water into a grinding machine in a blending way; grinding is optionally assisted by adding grinding media or auxiliary agents, etc., and is not limited in this invention.
As a preferred embodiment, the proportion of the ore material with the granularity smaller than 0.074mm is 75% -82% after the classification.
As a preferred embodiment, after the grinding and classification, water is added to the mineral aggregate and a slurry with a concentration of 30% -35% is prepared for flotation in the next step.
Step two, adjusting the pH value of the mixed ore pulp to 9-10 by lime, and performing flotation to obtain copper concentrate; the flotation includes one rougher, two sweepers and two beneficiations.
It is understood that the roughing, scavenging and refining referred to in this step two all refer to a primary flotation operation, i.e. five flotation steps are performed in total in this step; and the tailing pulp obtained in the roughing process is used as the pulp raw material for the first scavenging, the tailing pulp obtained in the front scavenging is used as the pulp raw material for the rear scavenging, and the concentrate pulp in the scavenging returns to the previous stage. Similarly, the concentrate pulp obtained in the rough concentration process is used as the pulp raw material for the first concentration, the concentrate pulp obtained in the pre-concentration is used as the pulp raw material for the post-concentration, and the tailing pulp in the concentration is returned to the previous stage.
In the invention, the corresponding stirring and aeration modes exist in each flotation operation, any conventional or non-conventional modes can be adopted in the invention, such as mechanical impeller stirring, rotor stirring, gas precipitation or pressure gas dissolution, and the like, and any flotation parameters or types can be used for realizing the mineral separation of the invention, and the invention is not limited in the invention.
As a preferred embodiment, the pH-adjusting agent in this step is lime; wherein, lime not only plays the effect of adjusting pH, but also plays the effect of restraining the floatation of pyrite, and the floatation separation effect is prevented from being reduced when separating and concentrating copper in the step.
As a preferred embodiment, the collecting agent is added in the form of an aqueous solution, and the mass concentration of the solution is 1% -5%; as a more preferred embodiment, the concentration of the aqueous solution of the collector is 2% by mass.
As a preferred embodiment, the roughing includes: adding a collector, an inhibitor and a foaming agent in the compound flotation reagent into ore pulp for flotation to obtain rougher tailings and rougher concentrate;
as a more preferable implementation mode, in the roughing, the consumption of the collector is 30 g/t-200 g/t, the consumption of the inhibitor is 400 g/t-2000 g/t and the consumption of the foaming agent is 10 g/t-35 g/t based on the mass of the ore pulp;
In an alternative embodiment, in the roughing, the amount of the collector includes, but is not limited to, any one or any two of the numerical intervals of 30, 50, 60, 80, 100, 120, 140, 150, 160, 180, 200 (g/t), the amount of the inhibitor includes, but is not limited to, any one or any two of the numerical intervals of 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000 (g/t), and the amount of the foamer includes, but is not limited to, any one or any two of the numerical intervals of 10, 15, 20, 25, 30, 35 (g/t), based on the mass of the pulp.
As a preferred embodiment, each of the sweeps comprises: adding a collector in the compound flotation reagent into the roughing or scavenging tailing pulp to perform flotation to obtain scavenging tailings and scavenging concentrate;
As a more preferable implementation mode, the using amount of the collecting agent is 30 g/t-200 g/t based on the mass of the ore pulp in each sweep;
As an alternative embodiment, the amount of collector used in each sweep is based on the mass of the slurry and includes, but is not limited to, any one or any two of the value intervals of 30, 50, 60, 80, 100, 120, 140, 150, 160, 180, 200 (g/t).
As a preferred embodiment, each of said beneficiation comprises: adding an inhibitor in the compound flotation reagent into the rough concentration or the concentrate pulp after concentration, and carrying out flotation to obtain concentration tailings and concentration concentrate;
As a more preferred embodiment, in each concentration, the inhibitor is used in an amount of 400g/t to 2000g/t based on the mass of the pulp;
In an alternative embodiment, the inhibitor may be used in an amount including, but not limited to, any one or any two of the numerical intervals 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000 (g/t), based on the mass of the pulp, in each of the beneficiations.
In summary, as a more preferred embodiment, the "one roughing, two scavenging and two refining" of the present invention includes the following steps:
S1: adding a collector, an inhibitor and a foaming agent in the composite flotation reagent into the ore pulp with the pH value adjusted, and carrying out roughing to obtain rougher tailings and rougher concentrate;
S2: adding a collector in the compound flotation reagent into the ore pulp of the rougher tailings, and performing first scavenging to obtain first scavenger tailings and first scavenger concentrate; the first scavenging concentrate returns to the ore pulp subjected to roughing to perform roughing again;
S3: adding a collector in the composite flotation reagent into the first scavenger tailing pulp, and performing second scavenging to obtain second scavenger tailings and second scavenger concentrate; the second scavenging concentrate returns to the ore pulp of the first scavenging to be scavenged again; the second scavenger tail is used as a final tail product of the flotation separation of the invention;
s4: adding an inhibitor in the compound flotation reagent into the ore pulp of the rougher concentrate to perform first concentration to obtain first concentration tailings and first concentration concentrate; the first concentration tailings are returned to the ore pulp subjected to roughing for roughing again;
S5: adding an inhibitor in the compound flotation reagent into the first concentrated concentrate pulp to perform second concentration to obtain second concentration tailings and second concentration concentrate; wherein the second concentrating tailings are returned to the ore pulp of the first concentrating to be concentrated again; the second concentrate serves as the final concentrate product of the flotation separation of the invention, i.e. the copper concentrate product.
Example 1
The mineral raw material adopted in the embodiment is copper-sulfur polymetallic ore in a certain place in Yunnan. The main metal mineral composition of the ore is chalcopyrite, pyrite and pyrrhotite, and the gangue mineral is mainly quartz, muscovite, fluorite and the like. The average grades of main valuable elements copper and sulfur in the ore are respectively 0.46 percent and 1.52 percent. The method comprises the following steps:
(1) Preparing carbonized sodium cyanuric acid: dissolving sodium tripolycyanate by using deionized water to obtain an aqueous solution with the mass concentration of 8%; filtering the aqueous solution, and vacuum drying the filtrate at 60 ℃ to obtain powder crystals; placing the mixture into a tubular furnace for high-temperature heat treatment under the condition of nitrogen, wherein the temperature of the heat treatment is 800 ℃ (the temperature rising speed is 10 ℃ min -1), and keeping the constant temperature for 2.5 hours to fully carry out the reaction; after the reaction is finished and naturally cooled to room temperature, taking out the sample, namely carbonized sodium tripolycyanate;
Preparation of inhibitors: sodium carbo-cyanuric acid, sodium diethyl dithiocarbamate and sodium carbonate are mixed according to the mass ratio of 4:4.5:3.5, mixing and preparing into 2% aqueous solution;
Preparing a collector: the preparation method comprises the steps of fully mixing tert-butyl xanthate propylene ester, n-butyl xanthate propylene ester and ethyl xanthate propylene ester according to a mass ratio of 1:1:1;
(2) Raw ore treatment: feeding the mixed concentrate containing chalcopyrite and pyrite into grinding classification operation, wherein the proportion of-0.074 mm in the ground product is 75.50%;
(3) Copper-sulfur flotation separation operation: conveying ore pulp into a flotation machine, adding water to adjust the concentration of the ore pulp to 31%, adjusting the pH of the ore pulp to 10 with lime consumption of 2kg/t, and performing roughing twice concentration twice scavenging operation;
(3.1) roughing: adding an inhibitor, a collector and a foaming agent (pine oil) into the ore pulp, wherein the dosages of the three flotation agents are respectively 180g/t, 1800g/t and 35g/t according to the mass of the ore pulp; after the flotation is finished, collecting roughing concentrate and roughing tailings;
(3.2) first scavenging: adding a collector into ore pulp of the roughing tailings, wherein the dosage of the collector is 180g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining first scavenging tailings and first scavenging concentrate; returning the first scavenging concentrate to the ore pulp of the rougher for rougher separation again;
(3.3) second scavenging: adding a collector into the ore pulp of the first scavenging tailings, wherein the use amount of the collector is 80g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining second scavenging tailings and second scavenging concentrate; returning the second scavenging concentrate to the ore pulp of the first scavenging to carry out scavenging again; the second scavenger tail is used as the final tail product of flotation separation in the embodiment;
(3.4) first beneficiation: adding an inhibitor into ore pulp of the roughing concentrate, wherein the dosage is 1800g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining first concentrating tailings and first concentrating concentrate; returning the first concentrating tailings to the ore pulp subjected to rough concentration for rough concentration again;
(3.5) second beneficiation: adding inhibitor into the ore pulp, wherein the dosage is 800g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining second concentrating tailings and second concentrating concentrate; the second concentrating tailings are returned to the ore pulp of the first concentrating to be concentrated again; the second concentrate was used as copper concentrate product of this example;
After detection, the copper concentrate of this example had a copper content of 19.55% and a copper recovery of 92.48%.
Example 2
The mineral raw material adopted in the embodiment is zinc-sulfur polymetallic ore in a certain area of Guizhou. The main metal mineral composition of the ore is chalcopyrite, pyrite, a small amount of chalcopyrite and pyrrhotite, and the gangue mineral is mainly quartz and the like. The average grades of main valuable elements copper and sulfur in the ore are respectively 0.41 percent and 2.86 percent. The method comprises the following steps:
(1) Preparing carbonized sodium cyanuric acid: the procedure is the same as in example 1;
Preparation of inhibitors: sodium carbo-cyanuric acid, sodium diethyl dithiocarbamate and calcium carbonate are mixed according to the mass ratio of 5:5:4, mixing and preparing into an aqueous solution with the concentration of 2.5%;
Preparing a collector: fully mixing tert-butyl xanthate propylene fat and n-butyl xanthate propylene fat according to a mass ratio of 1:1 to obtain the product;
(2) Raw ore treatment: feeding the chalcopyrite-containing and pyrite mixed concentrate into grinding classification operation, wherein the proportion of-0.074 mm in the ground product is 82.00%;
(3) Copper-sulfur flotation separation operation: conveying ore pulp into a flotation machine, adding water to adjust the concentration of the ore pulp to 35%, adjusting the dosage of lime to 1.8kg/t, adjusting the pH of the ore pulp to 10, and performing roughing twice concentration twice scavenging operation;
(3.1) roughing: adding an inhibitor, a collector and a foaming agent (pine oil) into the ore pulp, wherein the dosages of the three flotation agents are 160g/t, 1500g/t and 35g/t respectively according to the mass of the ore pulp; after the flotation is finished, collecting roughing concentrate and roughing tailings;
(3.2) first scavenging: adding a collector into the ore pulp of the roughing tailings, wherein the dosage of the collector is 160g/t according to the mass of the ore pulp; after the flotation is finished, obtaining first scavenging tailings and first scavenging concentrate; returning the first scavenging concentrate to the ore pulp of the rougher for rougher separation again;
(3.3) second scavenging: adding a collector into the ore pulp of the first scavenging tailings, wherein the dosage of the collector is 90g/t based on the mass of the ore pulp; after the flotation is finished, obtaining second scavenging tailings and second scavenging concentrate; returning the second scavenging concentrate to the ore pulp of the first scavenging to carry out scavenging again; the second scavenger tail is used as the final tail product of flotation separation in the embodiment;
(3.4) first beneficiation: adding inhibitor into ore pulp of roughing concentrate, wherein the dosage is 1500g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining first concentrating tailings and first concentrating concentrate; returning the first concentrating tailings to the ore pulp subjected to rough concentration for rough concentration again;
(3.5) second beneficiation: adding inhibitor into the ore pulp, wherein the dosage is 750g/t according to the mass of the ore pulp; after the flotation is finished, obtaining second concentrating tailings and second concentrating concentrate; the second concentrating tailings are returned to the ore pulp of the first concentrating to be concentrated again; the second concentrate was used as copper concentrate product of this example;
After detection, the copper concentrate of this example had a copper content of 19.05% and a copper recovery of 91.53%.
Example 3
The mineral raw material adopted in the embodiment is copper-sulfur polymetallic ore in a certain place in Jiangxi. The main metal mineral composition of the ore is chalcopyrite, pyrite, a small amount of molybdenite, and the gangue mineral is mainly quartz, etc. The average grades of main valuable elements copper and sulfur in the ore are respectively 0.48 percent and 3.85 percent. The method comprises the following steps:
(1) Preparing carbonized sodium cyanuric acid: the procedure is the same as in example 1;
preparation of inhibitors: sodium carbo-cyanuric acid, sodium diethyl dithiocarbamate and basic potassium carbonate are mixed according to the mass ratio of 4:4:3, mixing and preparing into an aqueous solution with the concentration of 3%;
preparing a collector: fully mixing tert-butyl xanthate propylene fat and n-butyl xanthate propylene fat according to a mass ratio of 1:2;
(2) Raw ore treatment: feeding the mixed concentrate containing chalcopyrite and pyrite into grinding classification operation, wherein the proportion of-0.074 mm in the ground product is 81.59%;
(3) Copper-sulfur flotation separation operation: conveying ore pulp into a flotation machine, adding water to adjust the concentration of the ore pulp to 35%, adjusting the dosage of lime to 1.8kg/t, adjusting the pH of the ore pulp to 10, and performing roughing twice concentration twice scavenging operation;
(3.1) roughing: adding an inhibitor, a collector and a foaming agent (pine oil) into the ore pulp, wherein the dosages of the three flotation agents are respectively 200g/t, 2000g/t and 35g/t according to the mass of the ore pulp; after the flotation is finished, collecting roughing concentrate and roughing tailings;
(3.2) first scavenging: adding a collector into the ore pulp of the roughing tailings, wherein the dosage of the collector is 200g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining first scavenging tailings and first scavenging concentrate; returning the first scavenging concentrate to the ore pulp of the rougher for rougher separation again;
(3.3) second scavenging: adding a collector into the ore pulp of the first scavenging tailings, wherein the dosage of the collector is 100g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining second scavenging tailings and second scavenging concentrate; returning the second scavenging concentrate to the ore pulp of the first scavenging to carry out scavenging again; the second scavenger tail is used as the final tail product of flotation separation in the embodiment;
(3.4) first beneficiation: adding inhibitor into ore pulp of roughing concentrate, wherein the dosage is 2000g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining first concentrating tailings and first concentrating concentrate; returning the first concentrating tailings to the ore pulp subjected to rough concentration for rough concentration again;
(3.5) second beneficiation: adding inhibitor into the ore pulp, wherein the dosage is 1000g/t respectively according to the mass of the ore pulp; after the flotation is finished, obtaining second concentrating tailings and second concentrating concentrate; the second concentrating tailings are returned to the ore pulp of the first concentrating to be concentrated again; the second concentrate was used as copper concentrate product of this example;
After detection, the copper content in the copper concentrate of this example was 20.08%, and the copper recovery rate was 91.39%.
Comparative example 1
Substantially the same as example 3 (and using the same ore source to be treated as example 3) except that:
The inhibitor is replaced by: lime and sodium humate (mass ratio is 3:1);
and in the step (3), the lime dosage is 6kg/t, and the pH value of the ore pulp is regulated to 12.
The copper concentrate of the comparative example obtained after detection had a copper content of 20.15% and a copper recovery of 84.63%.
Comparative example 2
Substantially the same as example 3 (and using the same ore source to be treated as example 3) except that:
Preparation of inhibitors: sodium carbo-cyanuric acid and sodium carbonate are mixed according to the mass ratio of 4:3, and preparing into an aqueous solution with the concentration of 3%.
After detection, the copper content in the copper concentrate of the comparative example is 18.26%, and the copper recovery rate is 88.24%.
Comparative example 3
Substantially the same as example 3 (and using the same ore source to be treated as example 3) except that:
Preparation of inhibitors: sodium diethyldithiocarbamate and sodium carbonate are mixed according to the mass ratio of 4:3, and preparing into an aqueous solution with the concentration of 3%.
After detection, the copper content in the copper concentrate of the comparative example is 18.68%, and the copper recovery rate is 88.96%.
From the above, it is seen from the detection results of each example and comparative example that the use of the organic flotation inhibitor of the present invention can achieve efficient separation of chalcopyrite from pyrite under low alkalinity conditions, and the lime usage is much lower than 6kg/t in comparative example 1. In the embodiment, the copper grade in the copper concentrate is 19.05% -20.08%, the recovery rate is 91.39% -92.48%, and the recovery effect of valuable metals is better.
While the invention has been illustrated and described with reference to specific embodiments, it is to be understood that the above embodiments are merely illustrative of the technical aspects of the invention and not restrictive thereof; those of ordinary skill in the art will appreciate that: modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some or all of the technical features thereof, without departing from the spirit and scope of the present invention; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; it is therefore intended to cover in the appended claims all such alternatives and modifications as fall within the scope of the invention.
Claims (8)
1. A flotation separation inhibitor for chalcopyrite and pyrite, characterized in that the flotation separation inhibitor comprises the following components in parts by weight:
2-6 parts of sodium carbo-isocyanurate, 4-5 parts of sodium diethyl dithiocarbamate and 3-4 parts of carbonate;
Wherein the sodium carbomer cyanuric acid is prepared by high-temperature heat treatment of trisodium cyanurate;
the preparation method of the carbonized sodium cyanuric acid comprises the following steps:
Carrying out high-temperature heat treatment on trisodium cyanurate in a nitrogen atmosphere to obtain the sodium carborundum cyanuric acid;
the high temperature heat treatment includes: heating to 700-900 ℃ at a speed of 8-15 ℃ per minute, and keeping at constant temperature for 2-3 hours.
2. The inhibitor of the flotation separation of chalcopyrite and pyrite according to claim 1, characterized in that the carbonate salt comprises: at least one of sodium carbonate, potassium carbonate, calcium carbonate or basic magnesium carbonate.
3. A composite flotation reagent for chalcopyrite and pyrite, characterized in that the composite flotation reagent comprises the flotation separation suppressing agent according to claim 1 or 2;
The compound flotation reagent further comprises a collector and a foaming agent;
Wherein the collector comprises at least one of tert-butyl propylene xanthate, n-butyl propylene xanthate and ethyl propylene xanthate; the foaming agent comprises at least one of pine oil, camphor oil or eucalyptus oil.
4. A composite flotation reagent for chalcopyrite and pyrite according to claim 3, characterized in that the collector consists of tert-butyl xanthogenate propylene ester, n-butyl xanthogenate propylene ester and ethyl xanthogenate propylene ester; wherein the mass ratio of the tert-butyl xanthogenate propylene ester, the n-butyl xanthogenate propylene ester and the ethyl xanthogenate propylene ester is 1:1:1, a step of;
or the collector consists of tert-butyl xanthate propylene ester and n-butyl xanthate propylene ester; wherein the mass ratio of the tert-butyl xanthogenate propylene fat to the n-butyl xanthogenate propylene fat is 1: (1-2).
5. A method for the flotation separation of chalcopyrite and pyrite, characterized in that the method is carried out by using the composite flotation reagent for chalcopyrite and pyrite according to claim 3 or 4; the flotation separation method comprises the following steps:
(1) Grinding and classifying the mixed mineral aggregate of the chalcopyrite and the pyrite to obtain mixed mineral slurry;
(2) Adjusting the pH value of the mixed ore pulp to 9-10 by lime, and performing flotation to obtain copper concentrate; the flotation includes one rougher, two sweepers and two beneficiations.
6. The method for the flotation separation of chalcopyrite and pyrite according to claim 5, wherein the flotation comprises at least one of the following characteristics (i) - (iii):
(i) the roughing comprises: adding a collector, an inhibitor and a foaming agent in the compound flotation reagent into ore pulp for flotation to obtain rougher tailings and rougher concentrate;
(ii) each of the sweeps comprises: adding a collector in the compound flotation reagent into the roughing or scavenging tailing pulp to perform flotation to obtain scavenging tailings and scavenging concentrate;
(iii), each of said beneficiations comprising: and adding an inhibitor in the compound flotation reagent into the rough concentration or the concentrate pulp after concentration, and carrying out flotation to obtain concentration tailings and concentration concentrate.
7. The method of separating chalcopyrite from pyrite according to claim 6, wherein the amount of agent used in the flotation includes at least one of the following characteristics (a) - (C):
(A) In the coarse process, the using amount of the collecting agent is 30 g/t-200 g/t, the using amount of the inhibitor is 400 g/t-2000 g/t, and the using amount of the foaming agent is 10 g/t-35 g/t based on the mass of ore pulp;
(B) In each sweeping, the using amount of the collecting agent is 30 g/t-200 g/t based on the mass of ore pulp;
(C) In each concentration, the dosage of the inhibitor is 400 g/t-2000 g/t based on the mass of the ore pulp.
8. The method for separating chalcopyrite from pyrite according to claim 7, wherein the collector is added in the form of an aqueous solution, and the mass concentration of the solution is 1% -5%.
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| CN113333172A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Flotation separation method for high-sulfur copper-zinc ore |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113333172A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Flotation separation method for high-sulfur copper-zinc ore |
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| Title |
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| 卢寿慈 ; .硫化矿浮选理论的进展.国外金属矿选矿.(06),第35页. * |
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