CN117884262A - Flotation separation method for inhibitor, chalcopyrite and arsenopyrite - Google Patents
Flotation separation method for inhibitor, chalcopyrite and arsenopyrite Download PDFInfo
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- CN117884262A CN117884262A CN202410303587.7A CN202410303587A CN117884262A CN 117884262 A CN117884262 A CN 117884262A CN 202410303587 A CN202410303587 A CN 202410303587A CN 117884262 A CN117884262 A CN 117884262A
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- Prior art keywords
- inhibitor
- concentrate
- scavenging
- primary
- collector
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Links
- 239000003112 inhibitor Substances 0.000 title claims abstract description 104
- 229910052951 chalcopyrite Inorganic materials 0.000 title claims abstract description 39
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000005188 flotation Methods 0.000 title claims abstract description 39
- 238000000926 separation method Methods 0.000 title claims abstract description 33
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052964 arsenopyrite Inorganic materials 0.000 title claims abstract description 31
- 239000011734 sodium Substances 0.000 claims abstract description 11
- 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 10
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 10
- 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 abstract description 5
- 239000012141 concentrate Substances 0.000 claims description 94
- 230000002000 scavenging effect Effects 0.000 claims description 74
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 34
- 229910052802 copper Inorganic materials 0.000 claims description 34
- 239000010949 copper Substances 0.000 claims description 34
- 230000009471 action Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000004088 foaming agent Substances 0.000 claims description 7
- 238000007670 refining Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 25
- 239000011707 mineral Substances 0.000 abstract description 25
- 239000004576 sand Substances 0.000 abstract description 10
- 231100000331 toxic Toxicity 0.000 abstract description 10
- 230000002588 toxic effect Effects 0.000 abstract description 10
- 238000001179 sorption measurement Methods 0.000 abstract description 9
- 239000003814 drug Substances 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 8
- 238000002360 preparation method Methods 0.000 abstract description 7
- 229910052785 arsenic Inorganic materials 0.000 description 23
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 10
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 10
- 239000012991 xanthate Substances 0.000 description 9
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 6
- 238000009210 therapy by ultrasound Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 4
- 229910052683 pyrite Inorganic materials 0.000 description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 4
- 239000011028 pyrite Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 3
- JEMGLEPMXOIVNS-UHFFFAOYSA-N arsenic copper Chemical compound [Cu].[As] JEMGLEPMXOIVNS-UHFFFAOYSA-N 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 229910001431 copper ion Inorganic materials 0.000 description 3
- -1 iron ions Chemical class 0.000 description 3
- 238000010907 mechanical stirring Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- DSCFFEYYQKSRSV-UHFFFAOYSA-N 1L-O1-methyl-muco-inositol Natural products COC1C(O)C(O)C(O)C(O)C1O DSCFFEYYQKSRSV-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- VJXUJFAZXQOXMJ-UHFFFAOYSA-N D-1-O-Methyl-muco-inositol Natural products CC12C(OC)(C)OC(C)(C)C2CC(=O)C(C23OC2C(=O)O2)(C)C1CCC3(C)C2C=1C=COC=1 VJXUJFAZXQOXMJ-UHFFFAOYSA-N 0.000 description 2
- DSCFFEYYQKSRSV-KLJZZCKASA-N D-pinitol Chemical compound CO[C@@H]1[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)[C@H]1O DSCFFEYYQKSRSV-KLJZZCKASA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000010665 pine oil Substances 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 2
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229960000411 camphor oil Drugs 0.000 description 1
- 239000010624 camphor oil Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 229910052950 sphalerite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of mineral separation, in particular to a flotation separation method for inhibitor, chalcopyrite and arsenopyrite. The inhibitor comprises the following components: sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid; the mass ratio of the carbonized sodium cyanuric acid to the DL-2-amino-3-mercaptopropionic acid is 1:1 to 1.5. The inhibitor can reduce the adsorption of the collector on the surface of the toxic sand to a certain extent, can realize the selective adsorption on the surfaces of the toxic sand and the chalcopyrite, has low dosage of the medicament, simple preparation process and good selectivity, has wide sources of raw materials of the inhibitor, and is easy for industrialized use.
Description
Technical Field
The invention relates to the technical field of mineral separation, in particular to a flotation separation method for inhibitor, chalcopyrite and arsenopyrite.
Background
The arsenopyrite is the most widely distributed arsenic-containing mineral in the metal deposit, and often exists together with sulphide ores such as chalcopyrite, pyrite, sphalerite and the like. The arsenic content in the flotation concentrate is too high, so that the environment is greatly polluted in the smelting process, and the treatment cost is greatly increased. Therefore, the reduction of arsenic content in concentrate by beneficiation means is of great importance.
Currently, the flotation separation of chalcopyrite and arsenopyrite faces the following difficulties: (1) The arsenopyrite is easily activated by copper ions dissolved in chalcopyrite, so that the floatability of the arsenopyrite is improved, and the separation of copper and arsenic is more difficult; (2) The common inorganic inhibitors such as lime, potassium dichromate, sodium sulfide, sodium sulfite and the like are used in a large amount, so that the lime is easy to cause pipeline blockage. The oxidant mainly comprising potassium dichromate can obviously enhance the hydrophilicity of the oxidant by oxidizing the arsenopyrite, however, the environmental pollution caused by the medicament is serious. Commonly used organic inhibitors, such as tannins, polyacrylamides, dextrins, and the like, often adsorb by forming complexes with metal ions on the surface of the metal minerals. However, the use of the agent can also have a certain influence on the flotation of chalcopyrite, and the selectivity is poor. Therefore, it is of great importance to find a high selectivity flotation reagent which can effectively promote the separation of chalcopyrite from arsenopyrite.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to solve the problems of difficult separation and large pollution of medicaments in the existing chalcopyrite flotation and the existing arsenopyrite flotation. The inhibitor can effectively promote separation of chalcopyrite and arsenopyrite.
In order to achieve the above object of the present invention, the following technical solutions are specifically adopted:
in one aspect, the invention relates to an inhibitor comprising the following components:
sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid;
the mass ratio of the carbonized sodium cyanuric acid to the DL-2-amino-3-mercaptopropionic acid is 1: 1-3.
The inhibitor can reduce the adsorption of the collector on the surface of the toxic sand to a certain extent, can realize the selective adsorption on the surfaces of the toxic sand and the chalcopyrite, has low dosage of the medicament, simple preparation process and good selectivity, has wide sources of raw materials of the inhibitor, and is easy for industrialized use.
In another aspect, the invention also relates to a chalcopyrite and arsenopyrite flotation separation method, which comprises the following steps:
(a) Adding the inhibitor, the collector and the foaming agent into ore pulp, and then carrying out roughing to obtain roughing concentrate and roughing tailings;
(b) Adding the inhibitor and the collector into the roughing concentrate, and then carrying out primary concentration to obtain primary concentrate and primary concentrated middlings; adding the inhibitor into the primary concentrate, and then carrying out secondary concentration to obtain secondary concentrate and secondary concentration middlings; adding the inhibitor into the secondary concentrate, and then carrying out tertiary concentration to obtain copper concentrate and tertiary concentration middlings;
(c) Adding the collector into the roughing tailings, and then carrying out primary scavenging to obtain primary scavenging concentrate and primary scavenging middlings; adding the collector into the primary scavenging concentrate, and then carrying out secondary scavenging to obtain secondary scavenging concentrate and secondary scavenging middlings; and adding the collector into the secondary scavenging concentrate, and then carrying out tertiary scavenging to obtain tailings and tertiary scavenging middlings.
The chalcopyrite and arsenopyrite flotation separation method has reasonable arrangement, simple process and capability of obviously reducing the arsenic content in copper concentrate by adopting a specific inhibitor.
Compared with the prior art, the invention has the beneficial effects that:
(1) Compared with the traditional inhibitor, the inhibitor provided by the invention can reduce the adsorption of the collector on the surface of the toxic sand to a greater extent, and for the toxic sand, the iron ions on the surface of the toxic sand are in a ligand-lacking state, lone pair electrons exist, and the-COOH and-NH in the inhibitor are easy to combine 2 and-SH forms a feedback pi bond. The arrangement of copper ion valence electrons in chalcopyrite belongs to d10 configuration, and has obvious inertness, so that a feedback pi bond cannot be formed, and selective adsorption on the surfaces of arsenopyrite and chalcopyrite can be realized.
(2) The inhibitor provided by the invention is prepared from the carbonized sodium cyanuric acid and DL-2-amino-3-mercaptopropionic acid by compounding to form the medicament serving as an arsenic mineral inhibitor, can reduce the arsenic content in copper concentrate to 0.40%, has low medicament dosage, simple preparation process and good selectivity, has wide sources of raw materials of the inhibitor, and is easy to industrialize.
(3) The chalcopyrite and arsenopyrite flotation separation method provided by the invention has the advantages of reasonable separation method setting, simple process and capability of obviously reducing the arsenic content in copper concentrate by adopting a specific inhibitor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a process flow diagram of a chalcopyrite and arsenopyrite flotation separation method provided by the invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and detailed description, 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 of the present invention 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.
In one aspect, the invention relates to an inhibitor comprising the following components:
sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid;
the mass ratio of the carbonized sodium cyanuric acid to the DL-2-amino-3-mercaptopropionic acid is 1: 1-3 (e.g., 1:1, 1:1.5, 1:2, 1:2.5, or 1:3).
Compared with the traditional inhibitor, the inhibitor can reduce the adsorption of the collector on the surface of the toxic sand to a greater extent, and for the toxic sand, the iron ions on the surface of the toxic sand are in a ligand-lacking state, lone pair electrons exist, and the-COOH and-NH in the inhibitor are easy to combine 2 and-SH forms a feedback pi bond. The arrangement of copper ion valence electrons in chalcopyrite belongs to d10 configuration, and has obvious inertness, so that a feedback pi bond cannot be formed, and selective adsorption on the surfaces of arsenopyrite and chalcopyrite can be realized.
The inhibitor is prepared from sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid, and can be used as an arsenic mineral inhibitor, so that the arsenic content in copper concentrate can be reduced to 0.40%, the dosage of the inhibitor is low, the preparation process is simple, the selectivity is good, the source of raw materials of the inhibitor is wide, and the inhibitor is easy to industrialize.
Sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid react with metal ions on the surface of arsenopyrite as follows:
2(C 6 H 7 O 6 Na)n+Fe 2+ =2(C 6 H 7 O 6 )nFe +2Na + ；
C 3 H 7 NO 2 S+Fe 2+ =C 3 H 5 NO 2 SFe +2H + 。
in another aspect, the invention also relates to a chalcopyrite flotation separation method, as shown in fig. 1, comprising the following steps:
(a) Adding the inhibitor, the collector and the foaming agent into ore pulp, and then carrying out roughing to obtain roughing concentrate and roughing tailings;
(b) Adding the inhibitor and the collector into the roughing concentrate, and then carrying out primary concentration to obtain primary concentrate and primary concentrated middlings; adding the inhibitor into the primary concentrate, and then carrying out secondary concentration to obtain secondary concentrate and secondary concentration middlings; adding the inhibitor into the secondary concentrate, and then carrying out tertiary concentration to obtain copper concentrate and tertiary concentration middlings;
(c) Adding the collector into the roughing tailings, and then carrying out primary scavenging to obtain primary scavenging concentrate and primary scavenging middlings; adding the collector into the primary scavenging concentrate, and then carrying out secondary scavenging to obtain secondary scavenging concentrate and secondary scavenging middlings; and adding the collector into the secondary scavenging concentrate, and then carrying out tertiary scavenging to obtain tailings and tertiary scavenging middlings.
The chalcopyrite and arsenopyrite flotation separation method has reasonable setting, simple process and capability of obviously reducing the arsenic content in copper concentrate by adopting a specific inhibitor.
Preferably, the pH of the ore pulp is 11-12. Within this range the inhibitor can function stably.
Preferably, the pulp is at a concentration of 30wt% to 35wt% (e.g., 30wt%, 31wt%, 32wt%, 34wt%, or 35 wt%).
Preferably, the fraction of-0.074 mm in the pulp is 79.00wt% to 87.00wt% (e.g. 79.00wt%, 81.00wt%, 83.00wt%, 85.00wt% or 87.00 wt%).
Preferably, the copper grade of minerals in the ore pulp is 0.35% -0.50%, and the arsenic grade is 2.05% -2.23%.
Preferably, in step (a), the inhibitor is added to the pulp in an amount of 2400 to 2800g (e.g. 2400g, 2450g, 2500g, 2550g, 2600g, 2650g, 2700g, 2750g or 2800 g) of inhibitor per ton of pulp.
Preferably, in step (a), the collector is added to the pulp in an amount of 70 to 200g (e.g. 70g, 90g, 110g, 130g, 150g, 170g, 190g or 200 g) per ton of pulp.
Preferably, in step (a), the frother is added to the pulp in an amount of 30-50 g (e.g. 30g, 35g, 40g, 45g or 50 g) of frother per ton of pulp.
Preferably, in the step (a), the action time of the inhibitor is 4-6 min.
Preferably, in the step (a), the acting time of the collecting agent is 2-4 min.
Preferably, in the step (a), the action time of the foaming agent is 0.5-1.5 min.
Preferably, the inhibitor is added to the rougher concentrate in an amount of 300 to 1400g (e.g. 300g, 400g, 500g, 600g, 700g, 800g, 900g, 1000g, 1100g, 1200g, 1300g or 1400 g) per ton of pulp.
Preferably, the collector is added to the rougher concentrate in an amount of 35-100 g (e.g. 35g, 45g, 55g, 65g, 75g, 85g, 95g or 100 g) per ton of pulp.
Preferably, the inhibitor is added to the primary concentrate in an amount of 150 to 700g (e.g. 150g, 250g, 350g, 450g, 550g, 650g or 700 g) per ton of pulp.
Preferably, the inhibitor is added to the secondary concentrate in an amount of 75 to 350g (e.g. 75g, 95g, 115g, 135g, 155g, 175g, 195g, 215g, 235g, 255g, 275g, 295g, 315g, 335g or 350 g) of inhibitor per ton of pulp.
Preferably, in the primary refining, the action time of the inhibitor is 4-6 min.
Preferably, in the primary refining, the acting time of the collecting agent is 2-4 min.
Preferably, in the secondary concentration, the action time of the inhibitor is 4-6 min.
Preferably, in the three carefully selecting, the action time of the inhibitor is 4-6 min.
Preferably, the collector is added to the rougher tailings in an amount of 30-50 g (e.g. 30g, 35g, 40g, 45g or 50 g) per ton of pulp.
Preferably, the collector is added to the primary scavenger concentrate in an amount of 100 to 200g (e.g. 110g, 120g, 130g, 140g, 150g, 160g, 170g, 180g, 190g or 200 g) per ton of pulp.
Preferably, the collector is added to the secondary scavenger concentrate in an amount of 10-20 g (e.g. 10g, 12g, 14g, 16g, 18g or 20 g) per ton of pulp.
Preferably, the collector comprises: tert-butyl xanthogen propylene ester (CAS: 1663-39-4, chemical formula: C) 7 H 12 O 2 The method comprises the steps of carrying out a first treatment on the surface of the Also known as: t-butyl acrylate) and/or ethyl xanthate.
Preferably, the foaming agent comprises: pine oil and/or camphor oil.
Embodiments of the present invention will be described in detail below with reference to specific examples and comparative examples.
Example 1
The preparation method of the inhibitor provided by the embodiment comprises the following steps: sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid are placed in a stirring barrel at 40 ℃ according to the mass ratio of 1:1 is prepared into an inhibitor, and stirred for 5min, wherein the concentration of the inhibitor is 0.5wt%.
Example 2
The preparation method of the inhibitor provided by the embodiment comprises the following steps: sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid are placed in a stirring barrel at 50 ℃ according to the mass ratio of 1:2, preparing the compound medicament, stirring and reacting for 10min, wherein the concentration of the inhibitor is 1.5wt%.
Example 3
The preparation method of the inhibitor provided by the embodiment comprises the following steps: sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid are placed in a stirring barrel at 45 ℃ according to the mass ratio of 1:3 preparing the compound medicament, stirring and reacting for 10min, wherein the concentration of the inhibitor is 2wt%.
Example 4
According to the chalcopyrite and arsenopyrite flotation separation method provided by the embodiment, the mineral raw materials are selected from a certain copper-arsenic mineral in Jiangxi, and main minerals of the mineral raw materials are chalcopyrite, arsenopyrite, pyrite, quartz and the like. The copper grade in the raw ore is 0.50 percent, and the arsenic grade is 2.14 percent. The flotation operation was performed uniformly using a mechanical stirring type flotation machine, without additional air supply, and with natural aspiration, using the inhibitor of example 1.
The method specifically comprises the following steps:
(1) The crushed minerals are subjected to grinding and grading to prepare ore pulp with the concentration of 30wt%, wherein the fraction of-0.074 mm in the ore pulp accounts for 79.00wt%;
(2) Pre-treating the flotation pulp by utilizing ultrasonic waves to remove oxide films on the surfaces of minerals, wherein the ultrasonic treatment frequency is 30kHz, the power is 650KW, and the ultrasonic treatment time is 5min;
(3) Regulating the pH value of ore pulp to 11 by using calcium oxide, adding 2500g/t of inhibitor into the ore pulp, reacting with the ore pulp for 5min, then adding 150g/t of tert-butyl xanthate propylene fat and 45g/t of pine oil, and performing roughing after respectively reacting for 3min and 1min to obtain roughing concentrate and roughing tailings;
(4) Adding inhibitor and tert-butyl xanthate propylene fat into the roughing concentrate, and then carrying out primary concentration to obtain primary concentrate and primary concentration middlings; the addition amount of the inhibitor is 1250g/t, the action time is 5min, the addition amount of the tert-butyl xanthate is 75g/t, and the action time is 3min; the middlings are selected once and returned to the previous stage for rough concentration;
(5) Adding inhibitor into the primary concentrate, and then carrying out secondary concentration to obtain secondary concentrate and secondary concentration middlings; the addition amount of the inhibitor is 625g/t, and the action time is 5min; the secondary concentrating middlings return to the previous stage for primary concentrating;
(6) Adding inhibitor into the secondary concentrate, and then carrying out tertiary concentration to obtain copper concentrate and tertiary concentration middlings; the addition amount of the inhibitor is 312.5g/t, and the action time is 5min; the middlings from the third concentration are returned to the previous stage for the second concentration;
(7) Adding a collector into the roughing tailings, and then carrying out primary scavenging to obtain primary scavenging concentrate and primary scavenging middlings; the addition amount of the collector is 30g/t; returning the ore in the primary cleaning to the previous stage for rough cleaning;
(8) Adding a collector into the primary scavenging concentrate, and then carrying out secondary scavenging to obtain secondary scavenging concentrate and secondary scavenging middlings; the addition amount of the collector is 100g/t; returning the secondary scavenging ore to the previous stage for primary scavenging;
(9) Adding a collector into the secondary scavenging concentrate, and then carrying out tertiary scavenging to obtain tailings and tertiary scavenging middlings, wherein the addition amount of the collector is 10g/t; and returning the ore in the third scavenging to the previous stage for the second scavenging.
Finally, the grading index that the grade of copper in the copper concentrate is 24.15 percent, the recovery rate of copper is 96.82 percent and the content of arsenic in the copper concentrate product is 0.55 percent is obtained.
Example 5
According to the chalcopyrite and arsenopyrite flotation separation method provided by the embodiment, the mineral raw materials are selected from certain copper and arsenic minerals in Guizhou, and main minerals are chalcopyrite, arsenopyrite, pyrite, quartz and the like. The copper grade in the raw ore is 0.44%, and the arsenic grade is 2.23%. The flotation operation was performed uniformly using a mechanical stirring type flotation machine, without additional air supply, and with natural aspiration, using the inhibitor of example 2.
The method specifically comprises the following steps:
(1) The crushed minerals are subjected to grinding and grading to prepare ore pulp with the concentration of 33wt%, wherein the fraction of-0.074 mm in the ore pulp accounts for 83.50wt%;
(2) Pre-treating the flotation pulp by utilizing ultrasonic waves to remove oxide films on the surfaces of minerals, wherein the ultrasonic treatment frequency is 35kHz, the power is 650KW, and the ultrasonic treatment time is 7min;
(3) Regulating the pH value of ore pulp to 12 by using calcium oxide, adding 2800g/t inhibitor into the ore pulp, reacting with the ore pulp for 5min, then adding 110g/t tert-butyl xanthate propylene fat and 30g/t pinitol oil, and performing roughing after respectively reacting for 3min and 1min to obtain roughing concentrate and roughing tailings;
(4) Adding inhibitor and tert-butyl xanthate propylene fat into the roughing concentrate, and then carrying out primary concentration to obtain primary concentrate and primary concentration middlings; the addition amount of the inhibitor is 1400g/t, the action time is 5min, the addition amount of the tert-butyl xanthate is 55g/t, and the action time is 3min; the middlings are selected once and returned to the previous stage for rough concentration;
(5) Adding inhibitor into the primary concentrate, and then carrying out secondary concentration to obtain secondary concentrate and secondary concentration middlings; the addition amount of the inhibitor is 700g/t, and the action time is 5min; the secondary concentrating middlings return to the previous stage for primary concentrating;
(6) Adding inhibitor into the secondary concentrate, and then carrying out tertiary concentration to obtain copper concentrate and tertiary concentration middlings; the addition amount of the inhibitor is 350g/t, and the action time is 5min; the middlings from the third concentration are returned to the previous stage for the second concentration;
(7) Adding a collector into the roughing tailings, and then carrying out primary scavenging to obtain primary scavenging concentrate and primary scavenging middlings; the addition amount of the collector is 40g/t; returning the ore in the primary cleaning to the previous stage for rough cleaning;
(8) Adding a collector into the primary scavenging concentrate, and then carrying out secondary scavenging to obtain secondary scavenging concentrate and secondary scavenging middlings; the addition amount of the collector is 150g/t; returning the secondary scavenging ore to the previous stage for primary scavenging;
(9) Adding a collecting agent into the secondary scavenging concentrate, and then carrying out tertiary scavenging to obtain tailings and tertiary scavenging middlings, wherein the adding amount of the collecting agent is 15g/t; and returning the ore in the third scavenging to the previous stage for the second scavenging.
Finally, the grading index that the copper grade in the copper concentrate is 23.41 percent, the copper recovery rate is 94.36 percent and the arsenic content in the copper concentrate product is 0.41 percent is obtained.
Example 6
According to the chalcopyrite and arsenopyrite flotation separation method provided by the embodiment, the mineral raw materials are selected from Guangxi certain copper-arsenic minerals, and the main minerals are chalcopyrite, arsenopyrite, pyrite, quartz, fluorite and the like. The copper grade in the raw ore is 0.35 percent, and the arsenic grade is 2.05 percent. The flotation operation was performed uniformly using a mechanical stirring type flotation machine, without additional air supply, and with natural aspiration, using the inhibitor of example 3.
The method specifically comprises the following steps:
(1) The crushed minerals are subjected to grinding and grading to prepare ore pulp with the concentration of 35wt%, wherein the fraction of-0.074 mm in the ore pulp accounts for 86.80wt%;
(2) Pre-treating the flotation pulp by utilizing ultrasonic waves to remove oxide films on the surfaces of minerals, wherein the ultrasonic treatment frequency is 45kHz, the power is 650KW, and the ultrasonic treatment time is 10min;
(3) Regulating the pH value of ore pulp to 11 by using calcium oxide, adding 2400g/t inhibitor into the ore pulp, reacting with the ore pulp for 5min, adding 200g/t tert-butyl xanthate propylene fat and 50g/t pinitol oil, reacting for 3min and 1min respectively, and performing roughing to obtain roughing concentrate and roughing tailings;
(4) Adding inhibitor and tert-butyl xanthate propylene fat into the roughing concentrate, and then carrying out primary concentration to obtain primary concentrate and primary concentration middlings; the addition amount of the inhibitor is 1200g/t, the action time is 5min, the addition amount of the tert-butyl xanthate is 100g/t, and the action time is 3min; the middlings are selected once and returned to the previous stage for rough concentration;
(5) Adding inhibitor into the primary concentrate, and then carrying out secondary concentration to obtain secondary concentrate and secondary concentration middlings; the addition amount of the inhibitor is 600g/t, and the action time is 5min; the secondary concentrating middlings return to the previous stage for primary concentrating;
(6) Adding inhibitor into the secondary concentrate, and then carrying out tertiary concentration to obtain copper concentrate and tertiary concentration middlings; the addition amount of the inhibitor is 300g/t, and the action time is 5min; the middlings from the third concentration are returned to the previous stage for the second concentration;
(7) Adding a collector into the roughing tailings, and then carrying out primary scavenging to obtain primary scavenging concentrate and primary scavenging middlings; the addition amount of the collector is 50g/t; returning the ore in the primary cleaning to the previous stage for rough cleaning;
(8) Adding a collector into the primary scavenging concentrate, and then carrying out secondary scavenging to obtain secondary scavenging concentrate and secondary scavenging middlings; the addition amount of the collector is 200g/t; returning the secondary scavenging ore to the previous stage for primary scavenging;
(9) Adding a collector into the secondary scavenging concentrate, and then carrying out tertiary scavenging to obtain tailings and tertiary scavenging middlings, wherein the addition amount of the collector is 20g/t; and returning the ore in the third scavenging to the previous stage for the second scavenging.
Finally, the grading index that the grade of copper in the copper concentrate is 24.85 percent, the recovery rate of copper is 95.69 percent and the content of arsenic in the copper concentrate product is 0.40 percent is obtained.
Comparative example 1
The comparative example differs from example 6 only in that the inhibitor added in step (3) is different, and the inhibitor includes a mass ratio of 1:1 sodium hypochlorite and sodium sulfite in an amount of 3150g/t.
Finally, the grading index that the grade of copper in the copper concentrate is 23.85%, the recovery rate of copper is 85.97%, and the content of arsenic in the copper concentrate product is 0.79% is obtained.
Comparative example 2
This comparative example differs from example 6 only in that the inhibitor added in step (3) was different, and DL-2-amino-3-mercaptopropionic acid was not added to the inhibitor.
Comparative example 3
The comparative example differs from example 6 only in that the inhibitor added in step (3) differs from the sodium carbo-isocyanurate and DL-2-amino-3-mercaptopropionic acid in a mass ratio of 1:3.
comparative example 4
The comparative example differs from example 6 only in that step (3) is to add 2000g/t of inhibitor to the pulp.
TABLE 1 chalcopyrite and arsenopyrite flotation separation effects under different test conditions
In summary, as shown in the experimental data in table 1, compared with the conventional copper-arsenic flotation separation method, the arsenic content in the copper concentrate treated by the inhibitor provided by the invention is obviously reduced, which is far lower than the sorting index of the comparative example, so that the selective adsorption of arsenic minerals can be effectively realized by the separation inhibitor provided by the invention, and the floatability of the arsenic minerals is reduced.
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 (10)
1. An inhibitor, comprising the following components:
sodium carbo-cyanuric acid and DL-2-amino-3-mercaptopropionic acid;
the mass ratio of the carbonized sodium cyanuric acid to the DL-2-amino-3-mercaptopropionic acid is 1: 1-3.
2. The chalcopyrite and arsenopyrite flotation separation method is characterized by comprising the following steps of:
(a) Adding the inhibitor, the collector and the foaming agent in the ore pulp, and then carrying out roughing to obtain roughing concentrate and roughing tailings;
(b) Adding the inhibitor and the collector into the roughing concentrate, and then carrying out primary concentration to obtain primary concentrate and primary concentrated middlings; adding the inhibitor into the primary concentrate, and then carrying out secondary concentration to obtain secondary concentrate and secondary concentration middlings; adding the inhibitor into the secondary concentrate, and then carrying out tertiary concentration to obtain copper concentrate and tertiary concentration middlings;
(c) Adding the collector into the roughing tailings, and then carrying out primary scavenging to obtain primary scavenging concentrate and primary scavenging middlings; adding the collector into the primary scavenging concentrate, and then carrying out secondary scavenging to obtain secondary scavenging concentrate and secondary scavenging middlings; and adding the collector into the secondary scavenging concentrate, and then carrying out tertiary scavenging to obtain tailings and tertiary scavenging middlings.
3. The chalcopyrite flotation separation method according to claim 2, characterized by comprising at least one of the following technical characteristics (1) - (3):
(1) The pH value of the ore pulp is 11-12;
(2) The concentration of the ore pulp is 30-35 wt%;
(3) The particle size fraction of-0.074 mm in the ore pulp accounts for 79.00-87.00 wt%.
4. The chalcopyrite flotation separation method according to claim 2, characterized by comprising at least one of the following technical characteristics (1) - (3):
(1) Adding 2400-2800 g of the inhibitor into the ore pulp per ton of the ore pulp;
(2) The method comprises the steps of (a), adding 70-200 g of the collector into the ore pulp, wherein the amount of the collector added into each ton of the ore pulp is 70-200 g;
(3) And (a), adding 30-50 g of the foaming agent into the ore pulp per ton of the ore pulp.
5. The chalcopyrite flotation separation method according to claim 2, characterized by comprising at least one of the following technical characteristics (1) - (3):
(1) Step (a), the acting time of the inhibitor is 4-6 min;
(2) Step (a), the acting time of the collecting agent is 2-4 min;
(3) And (a), wherein the action time of the foaming agent is 0.5-1.5 min.
6. The chalcopyrite and arsenopyrite flotation separation method according to claim 2, characterized in that the inhibitor is added to the rougher concentrate in an amount of 300-1400 g per ton of pulp;
and adding 35-100 g of the collector into each ton of ore pulp in the roughing concentrate.
7. The chalcopyrite and arsenopyrite flotation separation process of claim 2, wherein the amount of inhibitor added to the primary concentrate is 150-700 g of inhibitor per ton of pulp.
8. The chalcopyrite and arsenopyrite flotation separation method according to claim 2, characterized in that the inhibitor is added to the secondary concentrate in an amount of 75-350 g of inhibitor per ton of pulp.
9. The chalcopyrite flotation separation method according to claim 2, characterized by comprising at least one of the following technical characteristics (1) - (4):
(1) In the primary refining, the acting time of the inhibitor is 4-6 min;
(2) In the primary refining, the acting time of the collector is 2-4 min;
(3) In the secondary concentration, the action time of the inhibitor is 4-6 min;
(4) In the three carefully selecting steps, the acting time of the inhibitor is 4-6 min.
10. The chalcopyrite flotation separation method according to claim 2, characterized by comprising at least one of the following technical characteristics (1) - (3):
(1) The collecting agent is added into the rougher tailings in an amount of 30-50 g per ton of ore pulp;
(2) The collecting agent is added into the primary scavenging concentrate in an amount of 100-200 g per ton of ore pulp;
(3) And adding 10-20 g of the collector into each ton of ore pulp in the secondary scavenging concentrate.
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