CN106824548B - Flotation dispersing agent suitable for high-talc-content copper-nickel sulfide ore and preparation method thereof - Google Patents
Flotation dispersing agent suitable for high-talc-content copper-nickel sulfide ore and preparation method thereof Download PDFInfo
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- 239000002270 dispersing agent Substances 0.000 title claims abstract description 34
- 238000005188 flotation Methods 0.000 title claims abstract description 31
- YFLLTMUVNFGTIW-UHFFFAOYSA-N nickel;sulfanylidenecopper Chemical compound [Ni].[Cu]=S YFLLTMUVNFGTIW-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title abstract description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 11
- 239000004584 polyacrylic acid Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 8
- 235000011118 potassium hydroxide Nutrition 0.000 claims abstract description 4
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 4
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 24
- 229910000570 Cupronickel Inorganic materials 0.000 abstract description 20
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052759 nickel Inorganic materials 0.000 abstract description 12
- 239000012141 concentrate Substances 0.000 abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052802 copper Inorganic materials 0.000 abstract description 9
- 239000010949 copper Substances 0.000 abstract description 9
- 239000000454 talc Substances 0.000 abstract description 6
- 229910052623 talc Inorganic materials 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 5
- 229910052952 pyrrhotite Inorganic materials 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 18
- 239000011707 mineral Substances 0.000 description 18
- 235000010755 mineral Nutrition 0.000 description 18
- 230000002209 hydrophobic effect Effects 0.000 description 17
- 239000003795 chemical substances by application Substances 0.000 description 10
- 239000003112 inhibitor Substances 0.000 description 8
- 230000002000 scavenging effect Effects 0.000 description 7
- 239000001768 carboxy methyl cellulose Substances 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 238000007667 floating Methods 0.000 description 6
- 238000000227 grinding Methods 0.000 description 6
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 5
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 241000219782 Sesbania Species 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 3
- 239000012190 activator Substances 0.000 description 3
- 239000012736 aqueous medium Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- ZNXQPKTZYBXOIN-UHFFFAOYSA-N potassium;pentane Chemical compound [K+].CCCC[CH2-] ZNXQPKTZYBXOIN-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000012991 xanthate Substances 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000017 hydrogel Substances 0.000 description 2
- 229910052611 pyroxene Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052612 amphibole Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 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
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052954 pentlandite Inorganic materials 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/005—Dispersants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention provides a flotation dispersant suitable for high-talc-content copper nickel sulfide ore, which comprises the following components in parts by weight: and (2) component A: 15-60 parts; and (B) component: 3-15 parts; a proper amount of water; the component A is low molecular weight polyacrylic acid; the component B is any one of sodium carbonate, caustic soda and caustic potash. The raw materials of the dispersing agent are cheap and easy to obtain, and the preparation method is simple and easy to implement; the dispersant of the invention is used for the flotation of talc type copper nickel sulphide ore whole mud, is particularly suitable for the flotation separation of refractory medium and low grade copper nickel sulphide ore with high content of talc and nickel-containing pyrrhotite, and can greatly improve the grade of copper and nickel in copper nickel concentrate.
Description
Technical Field
The invention belongs to the technical field of mineral separation, and particularly relates to a flotation dispersant suitable for high-talc-content copper-nickel sulfide ores and a preparation method thereof.
Background
The layered magnesium silicate mineral with natural hydrophobicity is a gangue mineral commonly existing in copper nickel sulfide ore. In order to separate the hydrophobic gangue from the sulfurized minerals, the miners use dispersants such as sodium hexametaphosphate, water glass, carboxymethyl cellulose, etc. for dispersing the inhibited hydrophobic gangue minerals to increase the flotation recovery of the sulfurized minerals. However, the above-mentioned dispersing agents generally have disadvantages such as poor dispersing effect, high drug dosage, and influence on floating of the target mineral. The research and development of the hydrophobic gangue dispersing agent which has high dispersing efficiency and is beneficial to the flotation of the sulphide ores have practical significance.
The traditional copper-nickel sulfide ore flotation process mostly adopts copper-nickel mixed flotation, the flotation reagent uses copper sulfate as a copper-nickel ore substance activating agent, CMC as a gangue inhibitor and butyl xanthate and ammonium nitrate black powder as a copper-nickel ore substance collecting agent for mixed flotation, and the technical method has the following problems: hydrophobic gangue is difficult to effectively disperse and inhibit, so that the quality of copper-nickel concentrate is poor and the content of magnesium oxide in the concentrate is high.
Chinese invention patent "a beneficiation method of copper-nickel sulfide ore", patent numbers CN97116773.7 and CN98102238 disclose several beneficiation methods of copper-nickel sulfide ore, but only solve the problem of changing the ion composition and the mineral surface state in ore pulp to improve the recovery rate of copper-nickel sulfide ore, and can not be applied to the flotation separation of copper-nickel sulfide ore with high hydrophobic gangue content and complex low grade.
Although the Chinese patent of the invention, namely the beneficiation method of the high-grade copper-nickel sulfide ore, obtains better technical effects, the technical scheme of the invention needs to combine magnetic separation, flotation and gravity separation technologies, so that the process is complex, the control difficulty is high, and the method is not suitable for popularization and application.
Patent reports (such as Chinese patent CN 101220745A) utilize sodium polyacrylate hydrogel to prevent sulfide ore from caking, and the principle is that the hydrogel has good water absorption and can prevent oxidation reaction. Therefore, it can only solve the problem that sulfide ore is easily oxidized and agglomerated during long-term storage in the ore mining process. Meanwhile, gel is not used as a flotation agent in general mineral flotation.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a flotation dispersant suitable for high-talc-content copper nickel sulfide ore, which comprises the following components in parts by weight: and (2) component A: 20-60 parts; and (B) component: 5-15 parts of a solvent; a proper amount of water;
the component A is low molecular weight polyacrylic acid; the component B is any one of sodium carbonate, caustic soda and caustic potash.
The molecular weight of the low-molecular-weight polyacrylic acid is 800-1000. Preferably, the low molecular weight polyacrylic acid has a molecular weight of 800.
Preferably, the weight part of the low molecular weight polyacrylic acid is 16 parts.
Preferably, the weight part of the component B is 4 parts.
The weight part of the water is 600-2500 parts.
Preferably, the water is 650 parts by weight.
The dispersant obtained by the invention is an anionic dispersant, has the advantages of strong selective adsorption capacity, capability of effectively reducing the surface potential of slime, increased electrostatic repulsion between particles, obvious dispersion effect, no influence on the floating of target minerals and the like.
It is another object of the present invention to provide a method for preparing the above dispersant, which comprises: and mixing the component A and the component B in parts by weight, adding water, and fully stirring until a high-brightness mixed solution is obtained.
The invention has the beneficial effects that:
1. the raw materials of the dispersing agent are cheap and easy to obtain, and the preparation method is simple and easy to implement;
2. the dispersant of the invention is used for the flotation of talc type copper nickel sulphide ore whole mud, is particularly suitable for the flotation separation of refractory medium and low grade copper nickel sulphide ore with high content of talc and nickel-containing pyrrhotite, and can greatly improve the grade of copper and nickel in copper nickel concentrate.
Detailed Description
The present invention is described in detail below by way of examples, and it should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention.
Example 1
Preparing a hydrophobic slime dispersant:
1. weighing 16 parts of low molecular weight polyacrylic acid (molecular weight is 800) and 4 parts of sodium carbonate, and mixing;
2. and then adding 650 parts of aqueous medium into the obtained product, and fully stirring and dissolving until a high-brightness mixed solution is formed, thus obtaining the required hydrophobic slime dispersant.
The hydrophobic slime dispersant is adopted to carry out flotation test research on certain complex low-grade copper-nickel ore.
1. The ore characteristics are as follows:
the low-grade nickel sulfide ore has a copper grade of 0.36 percent, a nickel grade of 0.80 percent and a magnesium oxide content of 26.36 percent. The ore is generally subjected to strong alteration, the metal minerals in the ore have fine granularity, are distributed in the gangue in a fine particle star-like scattered shape and a dip-dyed shape, and meanwhile, the gangue minerals are subjected to green mud petrifaction and smooth petrifaction. The sulphide minerals in the ore mainly comprise pyrrhotite, pentlandite, chalcopyrite and pyrite, wherein the content of the pyrrhotite is high (more than 4 percent); the gangue mineral mainly comprises modified minerals such as talc, serpentine, pyroxene, chlorite and amphibole, wherein the contents of talc, serpentine and pyroxene are high (the total content of minerals is more than 40%), the floatability is good, and the gangue mineral is difficult to inhibit; and they have low hardness, and the ore is seriously argillized after being ground; increasing the difficulty of ore dressing.
2. The mineral processing technology comprises the following steps:
(1) carrying out primary grinding on copper nickel sulfide ore raw ore, then screening primary ground ore products to separate-0.074 mm and +0.074mm size fraction parts, wherein the +0.074mm size fraction part enters secondary grinding, and the-0.074 mm size fraction products and products obtained by the secondary grinding are combined to be used as floating samples;
(2) adding a flotation activating agent, a hydrophobic slime dispersing agent, a combined collecting agent and a combined inhibitor into the flotation sample obtained in the step (1) in sequence, fully mixing the slurry, and then charging air to perform copper-nickel roughing so as to obtain copper-nickel rough concentrate and rougher tailings;
(3) carrying out concentration on the copper-nickel rough concentrate for three times, obtaining respective concentrated middlings by each concentration, obtaining copper-nickel concentrate besides the concentrated middlings by the last concentration, wherein the first, second and third concentrated middlings are the first middling, the second middling and the third middling respectively;
(4) and (3) carrying out scavenging on the roughed tailings for three times, obtaining respective scavenged middlings by scavenging each time, obtaining final tailings by scavenging the scavenged middlings for the last time, wherein the scavenged middlings for the first time, the scavenged middlings for the second time and the scavenged middlings for the third time are IV middlings, V middlings and VI middlings respectively.
In the step (1), the copper nickel sulphide ore raw ore is ground and stage grinding is adopted, so that the aim of selectively dissociating the floating sample is achieved, and the granularity of the floating sample is-0.074 mm and the content of the floating sample is 85-90%.
In the step (2), the types and the dosage of the flotation reagents added in the copper-nickel rough concentration are sequentially 1000g/t of raw ore as an activator malic acid, 800g/t of raw ore as a hydrophobic slime dispersant, 180g/t of raw ore as a collector amyl potassium xanthate, 50g/t of raw ore as Mac-10, 500g/t of raw ore as an inhibitor sesbania gum and 50g/t of raw ore as sodium carboxymethylcellulose.
In the step (3), the copper-nickel rough concentrate is subjected to concentration for three times, and the types and the amounts of the flotation reagents added in each concentration are 35g/t of raw ore of the collecting agent amyl potassium xanthate, 15g/t of raw ore of Mac-10, 50g/t of raw ore of the inhibitor sesbania gum and 20g/t of raw ore of sodium carboxymethylcellulose.
In the step (4), the rougher tailings are scavenged for three times, and the types and the dosage of flotation reagents added in each scavenging are 400g/t of active agent micromolecule acid raw ore, 100g/t of hydrophobic slime dispersant raw ore, 35g/t of collecting agent amyl potassium xanthate raw ore, 10g/t of Mac-10 raw ore, 20g/t of inhibitor sesbania gum raw ore and 10g/t of sodium carboxymethylcellulose raw ore in sequence.
Merging the first middling, the fourth middling, the fifth middling and the VI middling, and intensively returning to the copper-nickel roughing procedure for re-beneficiation; and the II middling and the III middling are combined and are intensively returned to the first fine selection process for re-selection.
According to the characteristics of ores, when the grinding fineness of a flotation test is-200 meshes and the content of the grinding ore accounts for 86.1%, 800g/t of the dispersing agent and corresponding activating agent, collecting agent and inhibitor in the embodiment 1 of the invention are added in the flotation, and the copper-nickel rough concentrate with the copper grade of 2%, the nickel grade of 4.2% and the copper-nickel recovery rate of more than 81% can be obtained by one-time roughing, so that the copper-nickel grade can be improved by the next-step concentration; after three times of scavenging of the roughing tailings, 100g/t of the dispersant in the embodiment 1 of the invention is added in each scavenging, the copper and nickel grades of the tailings are finally reduced to 0.045% and 0.12% respectively, and the loss rate of copper and nickel is about 10%.
On the basis of detailed condition tests, a flotation closed circuit test of selective dissociation, primary roughing, tertiary scavenging, tertiary concentration and batch concentrated return of middlings is adopted to obtain satisfactory technical indexes: the copper grade of the copper-nickel concentrate is 2.95 percent, the nickel grade is 6.19 percent, the copper recovery rate is 87 percent, the nickel recovery rate is 84.05 percent, and the content of magnesium oxide is 5.95 percent; the copper grade of the tailings is 0.053 percent, the nickel grade is 0.14 percent, and the loss rate of nickel is 15.95 percent.
Example 2
Preparing a hydrophobic slime dispersant:
1. weighing 60 parts of low molecular weight polyacrylic acid (molecular weight is 1000) and 15 parts of caustic soda, and mixing;
2. and then adding 2500 parts of an aqueous medium into the obtained product, fully stirring and dissolving until a high-brightness mixed solution is formed, and obtaining the required hydrophobic slime dispersant.
In the beneficiation process, except that in the step (2), the types and the dosage of the flotation reagents added in the copper-nickel rough beneficiation are 1500g/t of raw ore as an activator, 1000g/t of raw ore as a hydrophobic slime dispersant, 200g/t of raw ore as a collecting agent, 100g/t of raw ore as Mac-10, 800g/t of raw ore as an inhibitor and 100g/t of raw ore as sodium carboxymethylcellulose, the rest is the same as the example 1.
Example 3
Preparing a hydrophobic slime dispersant:
1. weighing 15 parts of low molecular weight polyacrylic acid (molecular weight is 900) and 3 parts of caustic potash, and mixing;
2. and then 600 parts of aqueous medium is added into the obtained product, and the mixture is fully stirred and dissolved until a high-brightness mixed solution is formed, so that the required hydrophobic slime dispersant is obtained.
In the beneficiation process, except for the step (2), the types and the dosage of the flotation reagents added in the copper-nickel rough beneficiation are 1300g/t of raw ore as an activator, 900g/t of raw ore as a hydrophobic slime dispersant, 190g/t of raw ore as a collecting agent, 80g/t of raw ore as Mac-10, 600g/t of raw ore as an inhibitor and 80g/t of raw ore as sodium carboxymethylcellulose, and the rest is the same as the example 1.
Comparative example
The comparative example was conducted in the same manner as in example 1 except that: no dispersant was added during the flotation.
The experimental results of examples 1 to 3 are shown in Table 1 in comparison with the comparative examples:
TABLE 1
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the technical solutions of the present invention are described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the present invention, which should be covered by the protection scope of the present invention.
Claims (4)
1. A flotation dispersant suitable for high-talc-content copper-nickel sulfide ore, which is characterized in that the medicament comprises the following components in parts by weight: and (2) component A: 15-60 parts; and (B) component: 4 parts of a mixture; 600-2500 parts of water;
the component A is low molecular weight polyacrylic acid; the component B is any one of sodium carbonate, caustic soda and caustic potash; the low molecular weight polyacrylic acid has a molecular weight of 800.
2. Dispersant according to claim 1, characterized in that the low molecular weight polyacrylic acid is present in a weight fraction of 16 parts.
3. Dispersant according to claim 1, characterized in that the water is present in 650 parts by weight.
4. A method for preparing the dispersant of any one of claims 1 to 3, wherein the method comprises: and mixing the component A and the component B in parts by weight, adding water, and fully stirring until a high-brightness mixed solution is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109794.9A CN106824548B (en) | 2017-02-27 | 2017-02-27 | Flotation dispersing agent suitable for high-talc-content copper-nickel sulfide ore and preparation method thereof |
Applications Claiming Priority (1)
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