CN115501980A - Chalcopyrite and talc flotation separation inhibitor and application thereof - Google Patents
Chalcopyrite and talc flotation separation inhibitor and application thereof Download PDFInfo
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- CN115501980A CN115501980A CN202211356870.3A CN202211356870A CN115501980A CN 115501980 A CN115501980 A CN 115501980A CN 202211356870 A CN202211356870 A CN 202211356870A CN 115501980 A CN115501980 A CN 115501980A
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- flotation
- talc
- chalcopyrite
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- phosphonic acid
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- 239000000454 talc Substances 0.000 title claims abstract description 73
- 229910052623 talc Inorganic materials 0.000 title claims abstract description 73
- 238000005188 flotation Methods 0.000 title claims abstract description 67
- 239000003112 inhibitor Substances 0.000 title claims abstract description 55
- 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
- 238000000926 separation method Methods 0.000 title claims abstract description 30
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims abstract description 38
- 235000012222 talc Nutrition 0.000 claims description 68
- 239000012141 concentrate Substances 0.000 claims description 46
- 230000002000 scavenging effect Effects 0.000 claims description 45
- 239000004088 foaming agent Substances 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- IRDQNLLVRXMERV-UHFFFAOYSA-N CCCC[Na] Chemical compound CCCC[Na] IRDQNLLVRXMERV-UHFFFAOYSA-N 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 239000012991 xanthate Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- AAJRIJBGDLLRAE-UHFFFAOYSA-M sodium;butoxymethanedithioate Chemical compound [Na+].CCCCOC([S-])=S AAJRIJBGDLLRAE-UHFFFAOYSA-M 0.000 claims description 4
- 238000005187 foaming Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 9
- 239000011707 mineral Substances 0.000 abstract description 9
- 231100000956 nontoxicity Toxicity 0.000 abstract description 2
- 239000008396 flotation agent Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000005764 inhibitory process Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001612 separation test Methods 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 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 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 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
- 239000002734 clay mineral Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Images
Classifications
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- 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
- B03D1/004—Organic compounds
- B03D1/014—Organic compounds containing phosphorus
-
- 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
- B03D2201/06—Depressants
-
- 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
- B03D2203/04—Non-sulfide ores
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a chalcopyrite and talc flotation separation inhibitor and application thereof. According to the invention, through adding the inhibitor amino trimethylene phosphonic acid, the amino trimethylene phosphonic acid selectively acts on the surface of the talc mineral, so that the surface hydrophilicity of the talc mineral is increased, and the influence on chalcopyrite is small, so that the high-efficiency separation of the chalcopyrite and the talc is realized. In addition, the inhibitor amino trimethylene phosphonic acid of the invention has the characteristics of no toxicity, no harm, high selectivity, low cost, easy commercial availability and the like.
Description
Technical Field
The invention belongs to the technical field of mineral processing, and particularly relates to a chalcopyrite and talc flotation separation inhibitor and application thereof.
Background
Copper is an important strategic metal resource, is widely applied to the fields of electricity, light industry, mechanical manufacturing, building industry, aerospace and the like due to excellent physical and chemical properties, and is the second largest consumer resource second to aluminum in the field of nonferrous metal materials in China. Copper exists mainly in the form of chalcopyrite in nature, which is commonly coexisted with clay minerals such as talc, chlorite, serpentine and the like. Talc (Mg) 3 Si 4 O 10 (OH) 2 ) As one of the most common gangue minerals in sulfide ores, the mineral flotation agent has good natural floatability, is easy to float upwards along with target minerals to enter concentrate, and reduces the mineral separation index. In addition, talc is soft in texture, is easy to be argillized in the crushing and grinding processes, is adsorbed and covered on the surface of a target mineral, is difficult to separate, and the talc slime also causes the increase of the viscosity of flotation foam, deteriorates the flotation environment and greatly reduces the quality of sulfide ore concentrate. At present, the separation path of chalcopyrite and talc mainly comprises two aspects, namely, removing fine particle talc by pre-desliming; and secondly, adding a talc inhibitor to enable the talc inhibitor to enter flotation tailings. However, when fine talc particles are removed in advance by utilizing the physical properties and flotation characteristics of talc, a part of talc may be separated, but valuable metals are also lost. Moreover, the prior talc removal method alone does not satisfy the requirements of the copper concentrate obtained, and talc inhibition is still required. The addition of an inhibitor to selectively inhibit talc is the most common method used in the separation of chalcopyrite and talc. Currently, starch, lignosulfonate, carboxymethyl cellulose, guar gum, and the like are commonly used talc inhibitors. The traditional inhibitor for inhibiting talc often has the problems of large medicament dosage, high mineral separation cost, poor inhibition effect, large loss of valuable metals and the like, and is difficult to meet the requirement of actual production. Therefore, the novel efficient talc separation inhibitor is developed, the floatability difference between talc and chalcopyrite is increased, the selective separation of the talc and the chalcopyrite is realized, and the novel efficient talc separation inhibitor has important significance for the development and utilization of talc-containing chalcopyrite resources.
Disclosure of Invention
The invention provides a chalcopyrite and talcum efficient flotation separation inhibitor and application thereof, aiming at solving the problems of the existing talcum flotation inhibitor. In addition, the efficient inhibitor amino trimethylene phosphonic acid has the characteristics of no toxicity, no harm, high selectivity, low cost, easy commercial acquisition and the like.
The technical scheme of the invention is as follows:
an inhibitor for the flotation separation of chalcopyrite and talcum, which is aminotrimethylene phosphonic acid.
The amino trimethylene phosphonic acid is used as a talc inhibitor for flotation separation of chalcopyrite and talc.
The invention discloses application of a chalcopyrite and talc flotation separation inhibitor, which is characterized by comprising the following specific steps:
(1) Crushing and grinding: crushing raw ore to be less than 2mm, and grinding the ore until the particle fineness is less than-0.074 mm;
(2) Size mixing: placing the ore pulp ground in the step (1) into a flotation machine, adjusting the concentration of the ore pulp to be 40-70%, and adjusting the pH of the ore pulp to be more than or equal to 8 by adopting a pH regulator;
(3) Adding chemicals for flotation: performing primary roughing, secondary concentrating and secondary scavenging on the pulp mixed in the step (2), wherein 50-100mg/L of inhibitor amino trimethylene phosphonic acid, 30-50mg/L of collector butyl sodium xanthate and 60-80mg/L of foaming agent 2# oil are sequentially added in the roughing operation, 15-20 mg/L of inhibitor amino trimethylene phosphonic acid is added in the first-stage concentrating operation, 5-10 mg/L of inhibitor amino trimethylene phosphonic acid is added in the second-stage concentrating operation, 20-30 mg/L of collector butyl sodium xanthate and 20-30mg/L of foaming agent 2# oil are added in the first-stage scavenging operation, 10-20 mg/L of collector butyl sodium xanthate and 20-30mg/L of foaming agent 2# oil are added in the second-stage scavenging operation, and after the agent acts for 3 min, performing flotation foaming scraping operation to obtain a flotation concentrate foam product and a tailing product in the tank;
(4) Post-treatment of flotation products: and (4) filtering and drying the final concentrate product obtained in the step (3) and the final tailing product to obtain copper concentrate with the Cu grade of 21.05-27.19% and the chalcopyrite recovery rate of 80.31-87.43%.
And (2) crushing raw ores in the step (1) by adopting a jaw crusher, and grinding ores by adopting a ceramic ball mill.
The pH regulator in the step (2) is hydrochloric acid and sodium hydroxide solution with the mass percentage concentration of 0.5-1.0%, the rotation speed of the flotation machine is set to be 1700-1900 r/min, and the pulp mixing time of the ore pulp is 2-3 min.
The principle of the invention is as follows:
the inhibitor aminotrimethylene phosphonic acid has rich phosphate groups, can generate chemical action with magnesium ions on the surface of the talc to be strongly adsorbed on the surface of the talc, and blocks the adsorption of the sodium butyl xanthate serving as a collector on the surface of the talc, so that the hydrophilicity of the surface of the talc is increased, and the floatability of the talc is inhibited. And because the interaction between the phosphoric acid group in the amino trimethylene phosphonic acid and the copper/iron ions of the active site on the surface of the chalcopyrite is weaker, the absorption of the inhibitor amino trimethylene phosphonic acid on the surface of the chalcopyrite is less, the further absorption of the collecting agent on the surface of the chalcopyrite is hardly influenced, the chalcopyrite surface after the collecting agent acts presents stronger hydrophobicity, and the better flotation performance is kept. Therefore, the addition of the inhibitor aminotrimethylene phosphonic acid increases the floatability difference between the chalcopyrite and the talc, and realizes the effective separation of the chalcopyrite and the talc.
The invention has the beneficial effects that:
(1) According to the invention, amino trimethylene phosphonic acid is used as a talc flotation inhibitor for the first time, and is used in the flotation separation process of chalcopyrite and talc, through selective inhibition of talc, the floatability difference of talc and chalcopyrite is increased, the effective separation of the talc and the chalcopyrite is realized, and the use of amino trimethylene phosphonic acid reduces the loss of chalcopyrite in the flotation process, and solves the problem of high difficulty in the flotation separation of chalcopyrite and talc at present.
(2) Compared with the traditional talc inhibitor, the novel talc inhibitor amino trimethylene phosphonic acid has the outstanding advantages of strong selectivity, good inhibition effect, small medicament dosage, easy commercial availability, small environmental pollution and the like, and is convenient for large-scale industrial production and application.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The invention is further illustrated by the figures and examples.
Example 1: in this example, the chalcopyrite talc content in the raw ore was 3.45% and the talc content was 1.67% by conducting a flotation separation test study on chalcopyrite talc in some places.
The inhibitor of this example is aminotrimethylene phosphonic acid. The amino trimethylene phosphonic acid is used as a talc inhibitor for flotation separation of chalcopyrite and talc. As shown in fig. 1, the specific steps are as follows:
(1) Crushing and grinding: crushing raw ore to below 2mm by using a jaw crusher, and grinding the ore by using a ceramic ball mill until the particle fineness is less than-0.074 mm;
(2) Size mixing: and (2) placing the ore pulp ground in the step (1) into a flotation machine, setting the rotation speed of the flotation machine to be 1900 r/min, and setting the pulp conditioning time to be 2 min. Adjusting the concentration of the ore pulp to be 40%, and adjusting the pH value of the ore pulp to be 8.0 by adopting a hydrochloric acid solution with the mass percentage concentration of 0.5%;
(3) Adding chemicals for flotation: adding 50mg/L of inhibitor amino trimethylene phosphonic acid, 50mg/L of collector butyl sodium xanthate and 60mg/L of foaming agent 2# oil into the pulp subjected to pulp mixing in the step (2) in sequence to perform primary roughing operation, wherein the dosing intervals are 3 min, namely adding one flotation agent to act for 3 min, then adding the other flotation agent, inserting a baffle of a flotation machine to perform the flotation foam scraping operation of roughing after the foaming agent 2# oil is added to act for 3 min, obtaining roughing concentrate and roughing tailings, adding 15mg/L of inhibitor amino trimethylene phosphonic acid into the roughing concentrate to perform primary roughing operation to obtain first concentrate and first tailings, returning the first tailings to the roughing operation to form closed cycle, adding 5mg/L of inhibitor amino trimethylene phosphonic acid into the first concentrate to perform secondary operation to obtain second concentrate and second tailings, returning the second tailings to the first stage of roughing operation to form closed cycle, adding 30mg/L of collector amino trimethylene phosphonic acid into the first concentrate to perform secondary operation, and returning the second concentrate to the first stage of scavenging operation to form first stage of closed cycle, and returning the second concentrate to perform secondary scavenging operation to obtain second concentrate and second concentrate, and returning the first stage of scavenging operation to form 20mg of first stage of scavenging and second scavenging operation to form first stage of scavenging concentrate, and second scavenging operation to perform secondary scavenging operation to form first stage of scavenging operation of first scavenging concentrate and second scavenging operation to obtain second scavenging operation, and second scavenging operation of scavenging concentrate, and second scavenging operation to form first stage of scavenging operation, and second scavenging operation to obtain second scavenging operation, and second scavenging operation, adding collector amino tertiary scavenger.
(4) Post-treatment of flotation products: and (4) filtering and drying the second concentrate obtained in the step (3) and the second scavenged tailing product to obtain the copper concentrate with the Cu grade of 23.05% and the chalcopyrite recovery rate of 87.43%.
Example 2: in this example, the chalcopyrite talc content in the raw ore was 3.04% and the talc content was 1.77% by conducting a flotation separation test study on chalcopyrite talc in some places.
The inhibitor of this example is aminotrimethylene phosphonic acid. The amino trimethylene phosphonic acid is used as a talc inhibitor for flotation separation of chalcopyrite and talc. The method comprises the following specific steps:
(1) Crushing and grinding: crushing raw ore to below 2mm by using a jaw crusher, and grinding the ore by using a ceramic ball mill until the particle fineness is less than-0.074 mm;
(2) Size mixing: and (2) placing the ore pulp ground in the step (1) into a flotation machine, setting the rotation speed of the flotation machine to be 1700 r/min, and setting the pulp mixing time to be 3 min. Adjusting the concentration of the ore pulp to be 60% in concrete, and adjusting the pH value of the ore pulp to be 8.5 by adopting a sodium hydroxide solution with the mass percentage concentration of 0.5%;
(3) Adding chemicals for flotation: adding inhibitor amino trimethylene phosphonic acid 100mg/L, collector butyl sodium xanthate 40mg/L and foaming agent 2# oil 70mg/L in sequence into the pulp mixed in the step (2) to perform a roughing operation, wherein the dosing intervals are 3 min, namely adding one flotation agent to act for 3 min, then adding the other flotation agent, inserting a baffle of a flotation machine to perform a roughing flotation foam scraping operation after the foaming agent 2# oil is added to act for 3 min, obtaining roughing concentrate and roughing tailings after the foam scraping is performed for 5min, adding inhibitor amino trimethylene phosphonic acid 20mg/L into the roughing concentrate to perform a first-stage concentration operation to obtain a first-concentration concentrate and a first-concentration tailing, returning the first-concentration tailing to the roughing operation to form a closed cycle, adding inhibitor amino trimethylene phosphonic acid into the first concentration concentrate to be 10mg/L for carrying out two-stage concentration operation to obtain second concentration concentrate and second concentration tailings, returning the second concentration tailings to the first concentration operation to form closed cycle, adding 25mg/L of collecting agent butyl sodium xanthate and 25mg/L of foaming agent 2# oil into the first roughing tailings for carrying out one-stage scavenging operation to obtain first scavenging concentrate and first scavenging tailings, returning the first scavenging concentrate to the roughing operation to form closed cycle, adding 15mg/L of collecting agent butyl sodium xanthate and 25mg/L of foaming agent 2# oil into the first scavenging tailings for carrying out second scavenging operation to obtain second scavenging concentrate and second scavenging tailings, and returning the second scavenging concentrate to the first scavenging operation to form closed cycle;
(4) Post-treatment of flotation products: and (4) filtering and drying the final flotation concentrate product obtained in the step (3) and the final flotation tailing product to obtain the copper concentrate with the Cu grade of 27.19% and the chalcopyrite recovery rate of 80.31%.
Example 3: in this example, the chalcopyrite talc content in the raw ore was 3.58% and the talc content was 1.53% by conducting a flotation separation test study on chalcopyrite talc in some places.
The inhibitor of this example is aminotrimethylene phosphonic acid. The amino trimethylene phosphonic acid is used as a talc inhibitor for flotation separation of chalcopyrite and talc. The method comprises the following specific steps:
(1) Crushing and grinding: crushing raw ore to below 2mm by using a jaw crusher, and grinding the ore by using a ceramic ball mill until the particle fineness is less than-0.074 mm;
(2) Size mixing: and (2) placing the ore pulp ground in the step (1) into a flotation machine, setting the rotation speed of the flotation machine to be 1800 r/min, and setting the pulp mixing time to be 3 min. Adjusting the concentration of the ore pulp to be 70%, and adjusting the pH value of the ore pulp to 10.0 by adopting a sodium hydroxide solution with the mass percentage concentration of 1.0%;
(3) Adding chemicals for flotation: adding 75mg/L of inhibitor amino trimethylene phosphonic acid, 30mg/L of collecting agent butyl sodium xanthate and 80mg/L of foaming agent 2# oil into the pulp mixed in the step (2) in sequence to carry out a roughing operation, wherein the dosing intervals are 3 min, namely adding one flotation agent to act for 3 min, then adding the other flotation agent, inserting a baffle of a flotation machine to carry out the flotation foam scraping operation of roughing after the foaming agent 2# oil is added to act for 3 min, obtaining roughing concentrate and roughing tailings after the foam scraping is carried out for 4min, adding 18mg/L of inhibitor amino trimethylene phosphonic acid into the roughing concentrate to carry out a section of concentration operation to obtain first concentrate and first tailings, returning the first tailings to the roughing operation to form a closed cycle, adding inhibitor amino trimethylene phosphonic acid into the first concentration concentrate to 8mg/L to perform two-stage concentration operation to obtain second concentration concentrate and second concentration tailings, returning the second concentration tailings to the first concentration operation to form closed cycle, adding 30mg/L of collecting agent sodium butyl xanthate and 30mg/L of foaming agent 2# oil into the first roughing tailings to perform one-stage scavenging operation to obtain first scavenging concentrate and first scavenging tailings, returning the first scavenging concentrate to the roughing operation to form closed cycle, adding 10mg/L of collecting agent sodium butyl xanthate and 30mg/L of foaming agent 2# oil into the first scavenging tailings to perform second scavenging operation to obtain second scavenging concentrate and second scavenging tailings, and returning the second scavenging concentrate to the first scavenging operation to form closed cycle;
(4) Post-treatment of flotation products: and (4) filtering and drying the second concentrate obtained in the step (3) and the second scavenged tailings to obtain the copper concentrate with the Cu grade of 24.36% and the chalcopyrite recovery rate of 84.75%.
The embodiments of the present invention are described in detail with reference to the drawings, and the scope of the present invention is not limited to the embodiments, and all technical solutions belonging to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention may be apparent to those skilled in the relevant art and are intended to be within the scope of the present invention.
Claims (6)
1. An inhibitor for flotation separation of chalcopyrite and talcum, which is characterized in that the inhibitor is aminotrimethylene phosphonic acid.
2. The chalcopyrite and talc flotation separation inhibitor according to claim 1, characterized in that: the amino trimethylene phosphonic acid is used as a talc inhibitor for flotation separation of chalcopyrite and talc.
3. The use of the chalcopyrite and talc flotation separation inhibitor of claim 1~2, comprising the steps of:
crushing and grinding: crushing raw ore to below 2mm, and grinding the ore until the particle fineness is less than-0.074 mm;
size mixing: placing the ore pulp ground in the step (1) into a flotation machine, adjusting the concentration of the ore pulp to be 40-70%, and adjusting the pH of the ore pulp to be more than or equal to 8 by using a pH regulator;
adding chemicals for flotation: carrying out primary roughing, secondary concentrating and secondary scavenging on the ore pulp subjected to size mixing in the step (2), wherein 50 to 100mg/L of inhibitor amino trimethylene phosphonic acid, 30 to 50mg/L of collector butyl sodium xanthate and 60 to 80mg/L of foaming agent 2# oil are sequentially added in the roughing operation, 15 to 20mg/L of inhibitor amino trimethylene phosphonic acid are added in the first-stage concentrating operation, 5 to 10mg/L of inhibitor amino trimethylene phosphonic acid are added in the second-stage concentrating operation, 20 to 30mg/L of collector butyl sodium xanthate and 20 to 30mg/L of foaming agent 2# oil are added in the first-stage scavenging operation, 10 to 20mg/L of collector butyl sodium xanthate and 20 to 30mg/L of foaming agent 2# oil are added in the second-stage scavenging operation, and after the agents act for 3 min, carrying out flotation foaming scraping operation to obtain a foam concentrate product and a tailing product in-trough product;
post-treatment of flotation products: and (4) filtering and drying the flotation froth concentrate product in the step (3) and the tailing product in the tank to obtain the copper concentrate with the Cu grade of 33.05-34.19% and the chalcopyrite recovery rate of 85.31-91.43%.
4. The use of chalcopyrite and talc flotation separation inhibitor according to claim 3 characterized in that: and (2) crushing the raw ore in the step (1) by adopting a jaw crusher, and grinding the ore by adopting a ceramic ball mill.
5. The use of chalcopyrite and talc flotation separation inhibitor according to claim 3 characterized in that: the pH regulator in the step (2) is hydrochloric acid or sodium hydroxide solution with the mass percentage concentration of 0.5-1.0%, the rotating speed of the flotation machine is set to be 1700-1900 r/min, and the pulp mixing time is 2-3 min.
6. The use of chalcopyrite and talc flotation separation inhibitor according to claim 3 characterized in that: in the step (3), the addition amount of the inhibitor amino trimethylene phosphonic acid accounts for 50-100 mg/L of the mass concentration of the flotation ore pulp according to the solid-to-liquid ratio; the addition amount of the collecting agent sodium butyl xanthate accounts for 30 to 50mg/L of the mass concentration of the flotation pulp; the addition amount of the foaming agent No. 2 oil accounts for 60-80 mg/L of the mass concentration of the flotation ore pulp; the flotation froth scraping time is 4 to 5 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356870.3A CN115501980A (en) | 2022-11-01 | 2022-11-01 | Chalcopyrite and talc flotation separation inhibitor and application thereof |
Applications Claiming Priority (1)
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