CN110586332A - Method for recovering sulfur and iron from polymetallic ore containing complex copper, sulfur and iron and containing easy-to-float silicate gangue - Google Patents
Method for recovering sulfur and iron from polymetallic ore containing complex copper, sulfur and iron and containing easy-to-float silicate gangue Download PDFInfo
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- CN110586332A CN110586332A CN201910790029.7A CN201910790029A CN110586332A CN 110586332 A CN110586332 A CN 110586332A CN 201910790029 A CN201910790029 A CN 201910790029A CN 110586332 A CN110586332 A CN 110586332A
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- magnetic separation
- pyrite
- concentrate
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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
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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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
-
- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
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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
- B03D1/018—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
- B03D2201/02—Collectors
-
- 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
- B03D2201/04—Frothers
-
- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for recovering pyrite from complex copper-pyrite polymetallic ore containing easy-floating silicate gangue, which comprises the following steps: (1) copper is selected from raw ores to obtain copper concentrate and copper-selected tailings; (2) carrying out low-intensity magnetic separation on the copper-selecting tailings to obtain high-sulfur iron concentrate and low-intensity magnetic separation tailings; (3) carrying out magnetic separation on the low-intensity magnetic separation tailings to obtain high-intensity magnetic separation concentrate and high-intensity magnetic separation tailings; (4) performing flotation on the high-intensity magnetic separation concentrate to recover magnetic pyrite, and recovering low-intensity magnetic separation pyrrhotite and magnetite to obtain high-sulfur iron concentrate; (5) and performing flotation on the strong magnetic separation tailings to recover nonmagnetic pyrite, and recovering nonmagnetic pyrite to obtain sulfur concentrate. The invention has the advantages that the tailings are subjected to the sulfur flotation by the strong magnetic separation, because the interference of the silicate iron minerals with weak magnetism on the separation is eliminated, the operation condition of the separation of the pyrite is improved, the sulfur and iron containing grade of the high-sulfur concentrate is improved and stabilized, the quality of the low-sulfur concentrate product is improved, the market sale requirement is met, the comprehensive recovery rate of sulfur and iron resources is improved, and the sulfur containing of the tailings is reduced.
Description
Technical Field
The invention relates to the field of mine ecological environment and tailing resource recycling, in particular to a method for recovering complex copper-sulfur-iron polymetallic ore sulfur-iron containing easy-floating silicate gangue.
Background
The quality of the ore is mainly reduced by copper, sulfur and iron, the copper grade is 0.94%, the sulfur grade is 12.53%, the iron grade is 23.97%, the gold and silver grade is respectively 0.27g/t and 8.22g/t, the copper in the ore mainly exists by chalcopyrite (which accounts for 86.02%), the chalcopyrite (which accounts for 8.04%), the sulfur mainly exists by pyrrhotite (which accounts for 58.01%), the pyrite, the marcasite and the colloidal pyrite (which accounts for 30.95%), the iron mainly exists by pyrrhotite (which accounts for 44.01%), the magnetite (which accounts for 23.61%), the pyrite and the colloidal pyrite (which accounts for 13.26%), and a small amount of hematite, siderite and the hematite, and the like, the gangue mainly exists by quartz, dolomite, calcite, pomegranate, magnetite, weak mineral and the like, and the ore concentrate of the ore is obtained by a magnetic separation process, the ore concentrate which is mainly composed of high pyrite, the ore is difficult to be used for the ore, the ore is obtained by a magnetic separation process of the ore, the ore is not only by a high-magnetite, the ore is difficult to be obtained by the ore concentrate, the ore is mainly exists by the ore, the ore concentrate with a high-ore concentrate which is not only caused by the ore concentrate which is difficult to be separated from the ore concentrate with a high-ore concentrate which is not only caused by the ore concentrate which is difficult to be separated from the ore concentrate which is not only caused by the ore concentrate which is not only caused by the ore concentrate which is difficult to the ore concentrate which contains the ore concentrate of high ore concentrate of the ore concentrate of 3527% of the ore concentrate of high ore concentrate of the ore of.
Disclosure of Invention
The invention aims to solve the technical problems of improving the sulfur and iron containing grade of high-sulfur concentrate, stabilizing the high-sulfur concentrate, improving the quality of low-sulfur concentrate products, meeting the market sale requirement, improving the comprehensive recovery rate of sulfur and iron resources and reducing the sulfur content of tailings, thereby providing the method for recovering the sulfur and iron from the complex copper-sulfur-iron polymetallic ore containing the easy-to-float silicate gangue.
The technical scheme of the invention is as follows: the method for recovering the pyrite from the polymetallic ore containing the complex copper pyrite containing the easy-floating silicate gangue comprises the following steps: (1) copper is selected from raw ores to obtain copper concentrate and copper-selected tailings; (2) carrying out low-intensity magnetic separation on the copper-selecting tailings to obtain high-sulfur iron concentrate and low-intensity magnetic separation tailings; (3) carrying out magnetic separation on the low-intensity magnetic separation tailings under the condition of magnetic field intensity of 8500-9500 oersted to obtain high-intensity magnetic separation concentrate and high-intensity magnetic separation tailings; (4) performing flotation on the high-intensity magnetic separation concentrate to recover magnetic pyrite, adopting ferrous sulfate and sodium thiosulfate as activators, D208 and butyl xanthate as collectors, pine oil as a foaming agent, pH6.5, and the concentration of roughing is 30%, performing primary coarse cleaning and secondary fine cleaning in a flotation process, and recovering low-intensity magnetic separation pyrrhotite and magnetite to obtain high-sulfur iron concentrate; (5) and recovering nonmagnetic pyrite by the flotation of the strong magnetic separation tailings, wherein ferrous sulfate and sodium thiosulfate are used as activating agents, D505 and butyl xanthate are used as collecting agents, pine oil is used as a foaming agent, the pH value is 6.5, the concentration of roughing is 32%, the first rough step, the third fine step and the second fine step are performed in the flotation process, and the nonmagnetic pyrite is recovered to obtain sulfur concentrate.
In the scheme, the dosage of the rough concentration activator ferrous sulfate in the step (4) is 300g/t, the dosage of the sodium thiosulfate is 40g/t, the dosage of the collector D208 is 400g/t, the dosage of the butyl xanthate is 50g/t, and the dosage of the pine oil is 40 g/t; the dosage of the collecting agent D208 is 50g/t, the dosage of the butyl xanthate is 10g/t and the dosage of the pine oil is 10 g/t.
In the scheme, the dosage of the roughing activator ferrous sulfate in the step (5) is 400g/t, the dosage of the sodium thiosulfate is 40g/t, the dosage of the collecting agent D505 is 200g/t, the dosage of the butyl xanthate is 60g/t, and the dosage of the pine oil in the roughing process is 40 g/t; the dosage of the collecting agent D505 is 50g/t, the dosage of the butyl xanthate is 10g/t and the dosage of the butyl xanthate is 10g/t in one sweep.
The invention has the advantages that the strong magnetic separator is adopted to carry out strong magnetic separation on the low-intensity magnetic separation tailings, so that the low-intensity magnetic minerals and the non-magnetic pyrite minerals are completely separated, the interference of the low-intensity magnetic minerals on sulfur separation is eliminated, and the operation condition of the pyrite separation is improved. The magnetic pyrite is recovered by the high-intensity magnetic separation concentrate flotation, so that 54.92% of iron (which is 15% higher than that of the original low-sulfur concentrate), 34.38% of sulfur (which is 10% higher than that of the original low-sulfur concentrate), 89.3% of S + Fe (which replaces the original low-sulfur concentrate) are obtained, and nonmagnetic pyrite is recovered by the high-intensity magnetic separation tailings flotation, so that sulfur concentrate products which contain 42.75% of sulfur (which is 1-2% higher than that of the original high-sulfur concentrate), 47.43% of iron (which is 6-7% higher than that of the original high-sulfur concentrate) and 90.18% of S + Fe (which is more than 8% higher than that of the original high; all meet the requirements of roasting acid-making cinder to prepare high-quality and high-quality iron oxide pellets; the total recovery rate of sulfur selection is improved to more than 93 percent from 73 percent, and the total recovery rate of iron (total iron) is improved to more than 80 percent from 36 percent. 34.24 million tons of magnetic high-sulfur iron concentrate products and 58.21 million tons of sulfur concentrate can be recovered more each year, 21882.1 million yuan is increased each year, the net profit is increased 10812.97 million yuan each year, and the economic benefit is huge. Meanwhile, the sulfur and iron minerals in the tailings are effectively recovered, the grade of the total sulfur in the tailings is reduced to be below 3.0%, and the harm of the tailings to the environment is reduced to the minimum.
Drawings
FIG. 1 is a schematic process flow of the complex copper-sulfur-iron polymetallic ore recovery principle of the existing floatable silicate gangue;
FIG. 2 is a schematic process flow diagram of the present invention;
FIG. 3 is a process flow, parameter diagram, of step (4) of the present invention;
FIG. 4 is a process flow, parameter diagram, of step (5) of the present invention.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments based on the embodiments in the present invention, without any inventive work, will be apparent to those skilled in the art from the following description.
As shown in figure 2, the invention is an improvement made aiming at the existing complex copper-sulfur-iron polymetallic ore sulfur-iron recovery process flow of the easy-to-float silicate gangue, and adds the process steps of carrying out magnetic separation on the low-intensity magnetic separation tailings by using a high-intensity magnetic separator with specific magnetic field intensity and then carrying out flotation on the low-intensity magnetic separation tailings on the premise of keeping the original process flow frame, thereby obtaining an unexpected good result, having low improvement cost and great benefit.
As shown in figure 2, the low-intensity magnetic separation tailings directly enter a high-intensity magnetic separator with the magnetic field intensity of 8500-9500 oersted for high-intensity magnetic separation, so that the effective separation of magnetic pyrite and nonmagnetic pyrite is realized, and the obtained magnetic separation concentrate and magnetic separation tailings are obtained. The magnetic concentrate mainly comprises the following components: carrying out low-intensity magnetic separation on pyrrhotite, magnetite, hematite, siderite, hematite-limonite, ferric silicate minerals and the like; the main minerals in the magnetic separation tailings are nonmagnetic pyrrhotite, pyrite, marcasite, colloidal pyrite and the like.
As shown in fig. 3, the magnetic pyrite was recovered by flotation using a high-intensity magnetic concentrator. The process technical conditions are as follows: the flotation process comprises primary and secondary rough flotation, the pH value of the rough flotation is 6.5, the concentration of the rough flotation is 30%, L1 (namely ferrous sulfate, the dosage of 300 g/t) and L2 (namely sodium thiosulfate, the dosage of 40 g/t) are used as activators in the rough flotation, D208 (namely ethyl xanthate, the dosage of 400 g/t) and butyl xanthate (the dosage of 50 g/t) are used as collectors in the rough flotation, pine oil (the dosage of 40 g/t) is used as a foaming agent, collecting agents D208 (the dosage of 50 g/t) and butyl xanthate (the dosage of 10 g/t) are added in the rough flotation, and pine oil (the dosage of 10 g/t) is added as a foaming agent, so that the magnetic high-sulfur iron ore concentrate product is obtained.
As shown in fig. 4, the non-magnetic pyrite is recovered by flotation of the strong magnetic tailings. The process technical conditions are as follows: performing primary rough three-fine two-sweep flotation in a flotation process, wherein the pH value of rough flotation is 6.5, the concentration of rough flotation is 32%, L1 (the dosage of 400 g/t) and L2 (the dosage of 40 g/t) are used as activators, D505 (methyl isoamyl xanthate, the dosage of 200g/t and one sweep of 50 g/t) and butyl xanthate (the dosage of 60g/t and one sweep of 10 g/t) are used as collectors, pine oil (the dosage of 40g/t and one sweep of 10 g/t) are used as foaming agents, D505 (the dosage of 50 g/t) and butyl xanthate (the dosage of 10 g/t) are replenished in one sweep, foaming agents are added, and pine oil (the dosage of 10 g/t) is used, so that a sulfur concentrate product is obtained.
Claims (3)
1. The method for recovering the pyrite from the complex copper-pyrite polymetallic ore containing the easy-to-float silicate gangue is characterized by comprising the following steps of: it comprises the following steps: (1) copper is selected from raw ores to obtain copper concentrate and copper-selected tailings; (2) carrying out low-intensity magnetic separation on the copper-selecting tailings to obtain high-sulfur iron concentrate and low-intensity magnetic separation tailings; (3) carrying out magnetic separation on the low-intensity magnetic separation tailings under the condition of magnetic field intensity of 8500-9500 oersted to obtain high-intensity magnetic separation concentrate and high-intensity magnetic separation tailings; (4) performing flotation on the high-intensity magnetic separation concentrate to recover magnetic pyrite, adopting ferrous sulfate and sodium thiosulfate as activators, D208 and butyl xanthate as collectors, pine oil as a foaming agent, pH6.5, and the concentration of roughing is 30%, performing primary coarse cleaning and secondary fine cleaning in a flotation process, and recovering low-intensity magnetic separation pyrrhotite and magnetite to obtain high-sulfur iron concentrate; (5) and recovering nonmagnetic pyrite by the flotation of the strong magnetic separation tailings, wherein ferrous sulfate and sodium thiosulfate are used as activating agents, D505 and butyl xanthate are used as collecting agents, pine oil is used as a foaming agent, the pH value is 6.5, the concentration of roughing is 32%, the first rough step, the third fine step and the second fine step are performed in the flotation process, and the nonmagnetic pyrite is recovered to obtain sulfur concentrate.
2. The method for recovering the pyrite in the complex copper-pyrite polymetallic ore containing the free silicate gangue as claimed in claim 1, wherein: in the step (4), the dosage of the rough concentration activator ferrous sulfate is 300g/t, the dosage of the sodium thiosulfate is 40g/t, the dosage of the collecting agent D208 is 400g/t, the dosage of the butyl xanthate is 50g/t, and the dosage of the pine oil is 40 g/t; the dosage of the collecting agent D208 is 50g/t, the dosage of the butyl xanthate is 10g/t and the dosage of the pine oil is 10 g/t.
3. The method for recovering the pyrite in the complex copper-pyrite polymetallic ore containing the free silicate gangue as claimed in claim 1, wherein: in the step (5), the dosage of a roughing activator ferrous sulfate is 400g/t, the dosage of sodium thiosulfate is 40g/t, the dosage of a collecting agent D505 is 200g/t, the dosage of butyl xanthate is 60g/t, and the dosage of pine oil in roughing is 40 g/t; the dosage of the collecting agent D505 is 50g/t, the dosage of the butyl xanthate is 10g/t and the dosage of the butyl xanthate is 10g/t in one sweep.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910790029.7A CN110586332A (en) | 2019-08-26 | 2019-08-26 | Method for recovering sulfur and iron from polymetallic ore containing complex copper, sulfur and iron and containing easy-to-float silicate gangue |
| BR102020017252-2A BR102020017252A2 (en) | 2019-08-26 | 2020-08-24 | METHOD OF RECOVERY OF S AND FE FROM CU-S-FE POLYMETALLIC ORE COMPLEX CONTAINING EASY TO FLOAT SILICATE GANGAE |
| ZA2020/05276A ZA202005276B (en) | 2019-08-26 | 2020-08-25 | Method of recovering s and fe from complex cu-s-fe polymetallic ore containing easy-to-float silicate gangue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910790029.7A CN110586332A (en) | 2019-08-26 | 2019-08-26 | Method for recovering sulfur and iron from polymetallic ore containing complex copper, sulfur and iron and containing easy-to-float silicate gangue |
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| Publication Number | Publication Date |
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| CN110586332A true CN110586332A (en) | 2019-12-20 |
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| CN201910790029.7A Pending CN110586332A (en) | 2019-08-26 | 2019-08-26 | Method for recovering sulfur and iron from polymetallic ore containing complex copper, sulfur and iron and containing easy-to-float silicate gangue |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110586332A (en) |
| BR (1) | BR102020017252A2 (en) |
| ZA (1) | ZA202005276B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111298984A (en) * | 2020-03-27 | 2020-06-19 | 云南铁峰矿业化工新技术有限公司 | Collecting agent |
| CN112827640A (en) * | 2021-01-05 | 2021-05-25 | 安徽马钢罗河矿业有限责任公司 | Beneficiation method for recovering iron and sulfur from high-sulfur low-intensity magnetic separation tailings |
| CN113369011A (en) * | 2021-05-31 | 2021-09-10 | 铜陵有色金属集团股份有限公司 | Method for gradient recovery of pyrite mineral from copper-dressing tailings |
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| US4298169A (en) * | 1979-09-26 | 1981-11-03 | The Regents Of The University Of Minnesota | Selective flocculation, magnetic separation, and flotation of ores |
| CN104259009A (en) * | 2014-08-08 | 2015-01-07 | 西北矿冶研究院 | Copper-iron-sulfur separation composite inhibitor and high-sulfur refractory copper-iron ore beneficiation method |
| CN106733216A (en) * | 2016-12-27 | 2017-05-31 | 云南锡业股份有限公司卡房分公司 | A kind of beneficiation method of the tin copper symbiotic sulfide ore rich in magnetic iron ore |
| CN108745625A (en) * | 2018-05-31 | 2018-11-06 | 铜陵有色金属集团股份有限公司 | The method of substep recycling magnetic iron ore, monocline pyrrhotine, hexa-pyrrhotite and pyrite |
| CN108906312A (en) * | 2018-07-02 | 2018-11-30 | 安徽马钢罗河矿业有限责任公司 | A kind of beneficiation method for diversification raw ore |
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-
2019
- 2019-08-26 CN CN201910790029.7A patent/CN110586332A/en active Pending
-
2020
- 2020-08-24 BR BR102020017252-2A patent/BR102020017252A2/en unknown
- 2020-08-25 ZA ZA2020/05276A patent/ZA202005276B/en unknown
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| US4298169A (en) * | 1979-09-26 | 1981-11-03 | The Regents Of The University Of Minnesota | Selective flocculation, magnetic separation, and flotation of ores |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111298984A (en) * | 2020-03-27 | 2020-06-19 | 云南铁峰矿业化工新技术有限公司 | Collecting agent |
| CN112827640A (en) * | 2021-01-05 | 2021-05-25 | 安徽马钢罗河矿业有限责任公司 | Beneficiation method for recovering iron and sulfur from high-sulfur low-intensity magnetic separation tailings |
| CN113369011A (en) * | 2021-05-31 | 2021-09-10 | 铜陵有色金属集团股份有限公司 | Method for gradient recovery of pyrite mineral from copper-dressing tailings |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA202005276B (en) | 2021-08-25 |
| BR102020017252A2 (en) | 2021-03-09 |
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Application publication date: 20191220 |
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