CN110026295B - Slag separation system for reducing copper content of tailings and application thereof - Google Patents
Slag separation system for reducing copper content of tailings and application thereof Download PDFInfo
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- CN110026295B CN110026295B CN201910407432.7A CN201910407432A CN110026295B CN 110026295 B CN110026295 B CN 110026295B CN 201910407432 A CN201910407432 A CN 201910407432A CN 110026295 B CN110026295 B CN 110026295B
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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
- B03D1/14—Flotation machines
- B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
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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
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1462—Discharge mechanisms for the froth
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Abstract
The invention provides a slag separation system for reducing copper content of tailings, which comprises a first-third ball grinding machine, a first-fourth pump pool, a first-fourth swirler, a first-third ball grinding machine, a first-second stirring barrel, a first-sixth groups of flotation tanks, a first-tenth foam tank, a first-seventh gate valve, a tailing pump pool, a tailing thickener and a tailing filter; the method is changed into the method that the slag powder ore is crushed twice and classified twice to obtain mineral powder with the granularity of less than 75 mu m, the mineral powder is subjected to rough concentration and fine concentration through a first group of flotation tanks to a third group of flotation tanks, then crushed once and classified twice to obtain mineral powder with the granularity of less than 45 mu m, and the mineral powder is subjected to scavenging through a fourth group of flotation tanks to a sixth group of flotation tanks, concentration and dehydration to obtain the tailings. The invention crushes and grades for many times, the granularity of the mineral powder is reduced, the copper ions are convenient to separate, the foam scraped from the foam tank is recycled, the copper content in the tailings is reduced, the control of the gate valve is realized, the flotation time is adjusted, and the recovery rate of the tailings is improved.
Description
Technical Field
The invention belongs to the technical field of slag dressing, and particularly relates to a slag dressing system for reducing copper content of tailings and application thereof.
Background
At present, in the copper smelting industry, the copper content of bottom blowing slag and converter slag generated by crude copper smelting is about 4-5%, the copper content of tailings is reduced through a slag beneficiation process, the improvement of the recovery rate is the direction of continuous efforts in the same industry, however, many enterprises do much work and do not achieve the expected effect, the copper content of the tailings is 0.27-0.33%, the economic loss of the enterprises is reduced by tens of millions, and the copper content is increased by hundreds of millions.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a slag separation system for reducing copper content in tailings and application thereof, aiming at the defects of the prior art, the slag separation system can reduce the copper content in the tailings, the granularity of mineral powder is reduced after multiple times of crushing and grading, copper ions are conveniently separated, foam is scraped from a foam tank for recycling, the copper content in the tailings is reduced, the control of a gate valve is realized, the flotation time is adjusted, and the recovery rate of the tailings is improved.
In order to solve the technical problems, the invention adopts the technical scheme that: a slag separation system for reducing copper content in tailings comprises a ball grinding machine, wherein the ball grinding machine is connected with a pump pool through a pipeline, the pump pool is connected with a cyclone through a pipeline, the bottom end of the cyclone stretches out of the pipeline and is connected with the ball grinding machine, the upper end of the cyclone is connected with a pump pool through a pipeline, the pump pool is connected with a cyclone through a pipeline, the bottom end of the cyclone stretches out of the pipeline and is connected with a ball mill, the ball mill is connected with a pump pool through a pipeline, the upper end of the cyclone is connected with a stirring barrel through a pipeline, the stirring barrel is connected with one end of a first group of flotation tanks through a pipeline, the other end of the first group of flotation tanks is connected with one end of a second group of flotation tanks through a pipeline, the other end of the second group of flotation tanks is connected with one end of a third group of flotation tanks through a pipeline, the other end of the third group of flotation tank is connected with a third pump pool through a pipeline, the third pump pool is connected with a third swirler through a pipeline, the bottom end of the third swirler is connected with a third ball mill through a pipeline, the third ball mill is connected with the third pump pool through a pipeline, the upper end of the third swirler is connected with a fourth pump pool through a pipeline, the fourth pump pool is connected with a fourth swirler through a pipeline, the bottom end of the fourth swirler is connected with the third ball mill through a pipeline, the upper end of the fourth swirler is connected with a second stirring barrel through a pipeline, the second stirring barrel is connected with one end of a fourth group of flotation tank through a pipeline, the other end of the fourth group of flotation tank is connected with one end of a fifth group of flotation tank through a pipeline, the other end of the fifth group of flotation tank is connected with one end of a sixth group of flotation tank through a pipeline, and the other end of the sixth group of flotation tank is connected with a tailing pump through, the tailing pump pond is connected with a tailing thickener through a pipeline, and the tailing thickener is connected with a tailing filter through a pipeline; the first group of flotation tanks sequentially comprises a first flotation tank, a second flotation tank and a third flotation tank; the second group of flotation tanks sequentially comprises a fourth flotation tank, a fifth flotation tank, a sixth flotation tank and a seventh flotation tank; the third group of flotation tanks sequentially comprises a No. eight flotation tank and a No. nine flotation tank; the fourth group of flotation tanks sequentially comprises a No. ten flotation tank, a No. eleven flotation tank, a No. twelve flotation tank, a No. thirteen flotation tank, a No. ten fourth flotation tank and a No. fifteen flotation tank; the fifth group of flotation tanks sequentially comprises a sixteen-number flotation tank, a seventeen-number flotation tank, an eighteen-number flotation tank, a nineteen-number flotation tank, a twenty-number four flotation tank, a twenty-first flotation tank and a twenty-second flotation tank; the sixth group of flotation tanks sequentially comprises a twenty-third flotation tank and a twenty-fourth flotation tank.
Preferably, the lower end of the first group of flotation tanks is provided with a first froth tank, the lower end of the fourth flotation tank is provided with a second froth tank, the lower ends of the fifth flotation tank, the sixth flotation tank and the seventh flotation tank are provided with third foam tanks, the lower end of the third group of flotation cells is provided with a fourth foam cell, the bottom of the No. ten flotation cell is provided with a fifth foam cell, a sixth froth tank is arranged at the bottom of the eleventh flotation tank, and seventh froth tanks are arranged at the bottoms of the twelfth flotation tank, the thirteenth flotation tank, the tenth fourth flotation tank and the fifteenth flotation tank, eighth foam tanks are arranged at the bottoms of the sixteen flotation tanks, the seventeen flotation tanks and the eighteen flotation tanks, the bottom of nineteen flotation cells, twenty-four flotation cells, twenty-first flotation cells and twenty-second flotation cells is provided with a ninth foam cell, and the bottom of the sixth flotation cell group is provided with a tenth foam cell.
Preferably, the number of the scrapers in the first foam groove is 4.
Preferably, No. three flotation cell and pipe connection department are provided with first slide valve, No. seven flotation cell and pipe connection department are provided with the second slide valve, be provided with the third slide valve between No. twelve flotation cell and No. thirteen flotation cell, No. fifteen flotation cell and pipe connection department are provided with the fourth slide valve, be provided with the fifth slide valve between No. nineteen flotation cell and No. twenty four flotation cells, No. twenty flotation cell and pipe connection department are provided with the sixth slide valve, No. twenty-four flotation cell and pipe connection department are provided with the seventh slide valve.
The invention also provides application of the slag separation system for reducing copper content in tailings, and the slag separation system for reducing copper content in tailings is used for a method for reducing copper content in tailings, and the method comprises the following steps:
firstly, placing bottom blowing slag from a copper smelting bottom blowing furnace and converter slag from a converter into a slag ladle for slow cooling to obtain slag ore dressing, and crushing and screening the slag ore dressing to obtain slag powder ore with the particle size of less than 12 mm;
step two, putting the slag powder ore obtained in the step one into a first ball mill for crushing to obtain coarse mineral powder, pumping the coarse mineral powder into a first cyclone through a first pump pool for primary classification, overflowing mineral powder with the granularity of less than 0.85mm from the upper end of the first cyclone, allowing the mineral powder with the granularity of more than 0.85mm to enter the first ball mill from the bottom end of the first cyclone for continuous crushing, pumping the mineral powder with the granularity of less than 0.85mm into a second cyclone through a second pump pool for secondary classification, allowing the mineral powder with the granularity of less than 75 mu m to enter a first stirring barrel, and allowing the mineral powder with the granularity of more than 75 mu m to enter a second ball mill from the bottom end of the second cyclone for crushing and then pumping the mineral powder into a second cyclone through a second pump pool;
step three, adding a mixture of butyl sodium xanthate and second oil into a first stirring barrel, a fourth flotation tank, a second stirring barrel, a thirteenth flotation tank, a sixteenth flotation tank, a nineteen flotation tank and a twenty-second flotation tank;
step four, after the mixture of the butyl sodium xanthate and the second oil in the mineral powder with the granularity of less than 75 microns in the first stirring barrel is stirred and mixed, the mineral powder is firstly subjected to rough concentration in a first group of flotation tanks, then the mineral powder is screened by a first gate valve and then enters a second group of flotation tanks for primary concentration, the mineral powder is firstly mixed with the mixture of the butyl sodium xanthate and the second oil in a fourth group of flotation tanks, then the mineral powder is subjected to primary concentration in the second group of flotation tanks, then the mineral powder is screened by a second gate valve and then enters a third group of flotation tanks for secondary concentration, and finally the mineral powder subjected to secondary concentration is obtained; after the rough concentration and the two-time concentration are finished, slag concentrates in the first foam tank and the second foam tank are scraped for recycling, foams generated in the second foam tank are scraped and put into a third flotation tank for continuous rough concentration, foams generated in the third foam tank are scraped and put into a second ball mill for continuous crushing, foams generated in a fourth foam tank are scraped, and a mixture of butyl sodium xanthate and second oil is added and then put into a fifth flotation tank for continuous concentration;
pumping the mineral powder obtained in the step four after secondary concentration into a third cyclone through a third pump pond for third shunting, pumping the mineral powder overflowing from the upper end of the third cyclone and having the granularity of less than 45 mu m into a fourth cyclone through the fourth pump pond, crushing the mineral powder with the granularity of more than 45 mu m in a third ball mill from the bottom end of the third cyclone, continuously pumping the mineral powder into the third cyclone through the third pump pond for shunting, pumping the mineral powder with the granularity of less than 45 mu m into the fourth cyclone for fourth shunting, feeding the mineral powder overflowing from the upper end of the fourth cyclone and having the granularity of less than 45 mu m into a second stirring barrel, and continuously crushing the mineral powder with the granularity of more than 45 mu m in the third ball mill from the bottom of the fourth cyclone;
step six, the mineral powder with the particle size of less than 45 mu m obtained in the step five enters a fourth group of flotation tanks for first scavenging after being stirred and mixed with the mixture of the butyl sodium xanthate and the second oil in a second stirring barrel, enters a thirteenth group of flotation tanks for mixing with the mixture of the butyl sodium xanthate and the second oil after being screened by a third gate valve in the first scavenging process, enters a fifth group of flotation tanks for second scavenging after being screened by a fourth gate valve in the first scavenging process, is subjected to mixed scavenging with the mixture of the butyl sodium xanthate and the second oil in a sixteenth flotation tank, is subjected to mixed scavenging with the mixture of the butyl sodium xanthate and the second oil in a seventeen flotation tank and an eighteen flotation tank, is subjected to mixed scavenging with the mixture of the butyl sodium xanthate and the second oil in a nineteen flotation tank, is screened by a fifth gate valve, and then enters a twenty-fourth flotation tank and a twenty-first flotation tank for scavenging, finally, after the mixture of the sodium butyl xanthate and the second oil is mixed and scavenged in a twenty-second flotation tank, mineral powder enters a sixth group of flotation tanks through a sixth gate valve to be scavenged for the third time, and after the scavenging for the third time, the mineral powder passes through a seventh gate valve to obtain bottom sand; after the third scavenging is finished, slag concentrate in the fifth foam tank is scraped for recycling, foam in the sixth foam tank is scraped and is put into a first flotation tank for roughing continuously, foam in the seventh foam tank is scraped and is put into a fourth flotation tank for fine selection continuously, foam in the eighth foam tank is scraped and is put into a second ball mill for crushing continuously, foam in the ninth foam tank is scraped and is put into a third ball mill for crushing continuously, and foam in the tenth foam tank is scraped and is put into a sixteenth flotation tank for scavenging continuously;
pumping the bottom sand obtained in the seventh step and the sixth step into a tailing thickener through a tailing pump pond for concentration, and then, dewatering the bottom sand in a tailing filter to obtain the tailing.
Preferably, the mass ratio of the butyl sodium xanthate to the second oil in the mixture of the butyl sodium xanthate and the second oil in the third step, the fourth step and the sixth step is 1: 1.
preferably, the mass of the mixture of the butyl sodium xanthate and the second oil in the third step, the fourth step and the sixth step is the same, and the mass ratio of the mixture of the butyl sodium xanthate and the second oil in the mineral powder with the particle size of less than 75 μm in the first stirring barrel in the fourth step to the mass ratio of the mixture of the butyl sodium xanthate and the second oil in the mineral powder with the particle size of less than 75 μm in the third stirring barrel in the fourth step is 1: 1.
the butyl sodium xanthate plays a role in collecting copper ions, the second oil is a foaming agent and is composite high-grade alcohol, so that foam is generated conveniently, the second oil adsorbs part of mineral powder to generate foam, and the foam adsorbed with the mineral powder enters slag separation in the previous stage, so that the recovery rate of tailings is improved.
Compared with the prior art, the invention has the following advantages:
1. the first group of flotation tanks in the slag separation system for reducing the copper content of tailings of the invention is provided with 3 flotation tanks, the second group of flotation tanks is provided with 4 flotation tanks, the fourth group of flotation tanks is provided with 6 flotation tanks, the fifth group of flotation tanks is provided with 7 flotation tanks, the number of the flotation tanks is large, the flotation time can be increased, the first foam tank is provided with 4 scrapers, under the action of butyl sodium xanthate, copper ions in mineral powder are recovered, roughing is carried out in the first group of flotation tanks, slag concentrate in the first foam tank is scraped out through the 4 scrapers, the scraping amount can be increased for recycling, the slag powder ore with the particle size of less than 12mm is crushed twice and classified twice to obtain mineral powder with the particle size of less than 75 mu m, the mineral powder with small particle size is more beneficial to screening, roughing and concentrating are beneficial to the roughing and concentrating, the butyl sodium xanthate is convenient to recover copper ions, the mineral powder after the roughing and the concentrating twice enters a third pump pool, part of the mineral powder has larger particles and is wrapped by other minerals, the butyl sodium xanthate cannot replenish copper ions, the mineral powder with the particle size of less than 45 mu m is obtained after primary crushing and secondary grading, other minerals wrapped outside part of the mineral powder are crushed, the butyl sodium xanthate can effectively collect the copper ions, scavenging is facilitated, and the copper content of tailings obtained after concentration and dehydration is low after three times of scavenging.
2. In the application of the slag separation system for reducing the copper content of the tailings, the foam generated in the second foam scraping tank is put into the third flotation tank for continuous rough separation, and the foam generated in the fourth foam scraping tank is put into the fifth flotation tank for fine separation again, so that the flotation time can be prolonged; the foam generated by scraping the third foam tank is put into a second ball mill to be continuously crushed without entering a fourth flotation tank, so that the flotation pressure of the foam entering the fourth flotation tank can be reduced, and the foam is moved forwards into the second ball mill, so that the slag separation of the mineral powder without copper is facilitated; the foam scraped out of the sixth foam tank is put into a first flotation tank for roughing continuously, the foam scraped out of the seventh foam tank is put into a fourth flotation tank for concentration continuously, so that the flotation time can be prolonged, copper ions can be better separated, and the recovery rate of tailings is improved; foam generated in the eighth foam tank enters a second ball mill for secondary crushing, foam generated in the ninth foam tank enters a third ball mill for secondary crushing, mineral powder adsorbed in the foam is crushed and classified again and then enters a flotation tank for flotation, the tailing recovery rate is favorably improved, foam in the tenth foam tank enters a sixteenth flotation tank for secondary scavenging, and the foam in the tenth foam tank enters the last scavenging step because the mineral powder in the foam in the tenth foam tank is less, so that the foam in the tenth foam tank does not need to enter the third ball mill for crushing, the pump mineral powder load of a third pump pool can be relieved, and the slag separation efficiency is improved.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural diagram of a slag separation system for reducing copper content in tailings.
Description of reference numerals:
| 1-a ball grinder; | 2-pump pool number one; | 3-cyclone; |
| 4-pump pool II; | 5-second cyclone; | 6-second ball mill; |
| 7-a first stirring barrel; | 8-a first flotation tank; | 9-second flotation cell; |
| 10-No. three flotation cell; | 11 — a first foam tank; | 12-flotation cell number four; |
| 13-a fifth flotation cell; | 14-No. six flotation cell; | no. 15-seven flotation cell; |
| 16 — a second foam tank; | 17-third bubbleA foam tank; | 18-eighth flotation cell; |
| 19-No. nine flotation cell; | 20-a fourth foam tank; | 21-first set of flotation cells; |
| 22-second set of flotation cells; | 23-a third set of flotation cells; | 24-pump pool III; |
| 25-cyclone No. three; | 26-a third ball mill; | 27-pump sump four; |
| no. 28-iv swirler; | 29-second stirring barrel; | 30-a fourth group of flotation cells; |
| 31-a fifth set of flotation cells; | 32-a sixth set of flotation cells; | 33-tailing pump pond; |
| 34-a tailing thickener; | 35-tailing filter; | 36-ten flotation cells; |
| no. 37-eleven flotation cells; | no. 38-twelve flotation cells; | 39-thirteen flotation cell; |
| no. 40-ten four flotation cells; | no. 41-fifteen flotation cells; | no. 42-sixteen flotation cells; |
| no. 43-seventeen flotation cells; | no. 44-eighteen flotation cells; | no. 45-nineteen flotation cells; |
| 46-twenty-four flotation cells; | a No. 47-twenty-one flotation tank; | no. 48-twenty-two flotation tanks; |
| 49-twenty-three flotation tanks; | no. 50-twenty-four flotation tanks; | 51-fifth foam tank; |
| 52-sixth foam sink; | 53-seventh foam sink; | 54 — eighth foam tank; |
| 55-ninth foam tank; | 56-tenth foam tank; | 57-a third gate valve; |
| 58-a fourth gate valve; | 59-fifth gate valve; | 60-a sixth gate valve; |
| 61-a seventh gate valve; | 62-a first gate valve; | 63-second gate valve. |
Detailed Description
As shown in fig. 1, the slag separation system for reducing copper content in tailings in the embodiment includes a first ball grinding machine 1, the first ball grinding machine 1 is connected with a first pump pool 2 through a pipeline, the first pump pool 2 is connected with a first cyclone 3 through a pipeline, the bottom end of the first cyclone 3 extends out of the pipeline and is connected with the first ball grinding machine 1, the upper end of the first cyclone 3 is connected with a second pump pool 4 through a pipeline, the second pump pool 4 is connected with a second cyclone 5 through a pipeline, the bottom end of the second cyclone 5 extends out of the pipeline and is connected with a second ball mill 6, the second ball mill 6 is connected with a second pump pool 4 through a pipeline, the upper end of the second cyclone 5 is connected with a first stirring barrel 7 through a pipeline, the first stirring barrel 7 is connected with one end of a first group of tanks 21 through a pipeline, the other end of the first group of flotation tanks 21 is connected with one end of a second group of flotation tanks 22 through a flotation pipeline, the other end of the second group of flotation tank 22 is connected with one end of a third group of flotation tank 23 through a pipeline, the other end of the third group of flotation tank 23 is connected with a third pump pool 24 through a pipeline, the third pump pool 24 is connected with a third cyclone 25 through a pipeline, the bottom end of the third cyclone 25 is connected with a third ball mill 26 through a pipeline, the third ball mill 26 is connected with the third pump pool 24 through a pipeline, the upper end of the third cyclone 25 is connected with a fourth pump pool 27 through a pipeline, the fourth pump pool 27 is connected with a fourth cyclone 28 through a pipeline, the bottom end of the fourth cyclone 28 is connected with the third ball mill 26 through a pipeline, the upper end of the fourth cyclone 28 is connected with a second stirring barrel 29 through a pipeline, the second stirring barrel 29 is connected with one end of a fourth group of flotation tank 30 through a pipeline, the other end of the fourth group of flotation tank 30 is connected with one end of a fifth group of flotation tank 31 through a pipeline, the other end of the fifth group of flotation cells 31 is connected with one end of a sixth group of flotation cells 32 through a pipeline, the other end of the sixth group of flotation cells 32 is connected with a tailing pump pond 33 through a pipeline, the tailing pump pond 33 is connected with a tailing thickener 34 through a pipeline, and the tailing thickener 34 is connected with a tailing filter 35 through a pipeline; the first group of flotation tanks 21 sequentially comprise a first flotation tank 8, a second flotation tank 9 and a third flotation tank 10; the second group of flotation cells 22 sequentially comprises a fourth flotation cell 12, a fifth flotation cell 13, a sixth flotation cell 14 and a seventh flotation cell 15; the third group of flotation tanks 23 sequentially comprise a No. eight flotation tank 18 and a No. nine flotation tank 19; the fourth group of flotation cells 30 sequentially comprises a No. ten flotation cell 36, a No. eleven flotation cell 37, a No. twelve flotation cell 38, a No. thirteen flotation cell 39, a No. ten fourth flotation cell 40 and a No. fifteen flotation cell 41; the fifth group of flotation tanks 31 sequentially comprise a sixteen-number flotation tank 42, a seventeen-number flotation tank 43, an eighteen-number flotation tank 44, a nineteen-number flotation tank 45, a twenty-number four flotation tank 46, a twenty-first flotation tank 47 and a twenty-second flotation tank 48; the sixth set of flotation cells 32 includes, in order, a twenty-third flotation cell 49 and a twenty-fourth flotation cell 50.
In the slag separation system for reducing copper content in tailings of the embodiment, the lower end of the first flotation cell 21 is provided with a first froth cell 11, the lower end of the fourth flotation cell 12 is provided with a second froth cell 16, the lower ends of the fifth flotation cell 13, the sixth flotation cell 14 and the seventh flotation cell 15 are provided with a third froth cell 17, the lower end of the third flotation cell 23 is provided with a fourth froth cell 20, the bottom of the tenth flotation cell 36 is provided with a fifth froth cell 51, the bottom of the eleventh flotation cell 37 is provided with a sixth froth cell 52, the bottoms of the twelfth flotation cell 38, the thirteenth flotation cell 39, the tenth flotation cell 40 and the fifteenth flotation cell 41 are provided with a seventh froth cell 53, the bottoms of the sixteenth flotation cell 42, the seventeenth flotation cell 43 and the eighteen flotation cell 44 are provided with an eighth froth cell 54, the nineteen flotation cell 45, the twentieth flotation cell 46, the thirteenth flotation cell 46 and the eighteen flotation cell 44 are provided with an eighth froth cell 54, The bottoms of the twenty-first flotation tank 47 and the twenty-second flotation tank 48 are provided with a ninth froth tank 55, and the bottom of the sixth group of flotation tanks 32 is provided with a tenth froth tank 56.
In the slag separation system for reducing the copper content in the tailings, the number of the scrapers in the first foam groove 11 is 4, so that the scraping amount of the slag concentrate in the first foam groove 11 can be increased.
In the slag separation system for reducing copper content in tailings of the embodiment, a first gate valve 62 is arranged at the connection position of the third flotation tank 10 and a pipeline, a second gate valve 63 is arranged at the connection position of the seventh flotation tank 15 and the pipeline, a third gate valve 57 is arranged between the twelfth flotation tank 38 and the thirteenth flotation tank 39, a fourth gate valve 58 is arranged at the connection position of the fifteenth flotation tank 41 and the pipeline, a fifth gate valve 59 is arranged between the nineteen flotation tank 45 and the twenty-fourth flotation tank 46, a sixth gate valve 60 is arranged at the connection position of the twenty-second flotation tank 48 and the pipeline, and a seventh gate valve 61 is arranged at the connection position of the twenty-fourth flotation tank 50 and the pipeline.
The embodiment also provides application of the slag separation system for reducing the copper content of the tailings, and the slag separation system for reducing the copper content of the tailings is used for a method for reducing the copper content of the tailings, and the method comprises the following steps:
firstly, placing bottom blowing slag from a copper smelting bottom blowing furnace and converter slag from a converter into a slag ladle for slow cooling to obtain slag ore dressing, and crushing and screening the slag ore dressing to obtain slag powder ore with the particle size of less than 12 mm; the mass ratio of the bottom blowing slag to the converter slag is 9: 1; wherein the copper content of the bottom blowing slag is 3-4%, and the copper content of the converter slag is 7-9%;
step two, putting the slag powder ore obtained in the step one into a first ball mill 1 for crushing to obtain coarse mineral powder, pumping the coarse mineral powder into a first cyclone 3 through a first pump pool 2 for primary classification, overflowing mineral powder with the granularity of less than 0.85mm from the upper end of the first cyclone 3, feeding the mineral powder with the granularity of more than 0.85mm into the first ball mill 1 from the bottom end of the first cyclone 3 for continuous crushing, pumping the mineral powder with the granularity of less than 0.85mm into a second cyclone 5 through a second pump pool 4 for secondary classification, feeding the mineral powder with the granularity of less than 75 microns into a first stirring barrel 7, feeding the mineral powder with the granularity of more than 75 microns into a second ball mill 6 from the bottom end of the second cyclone 5 for crushing, and pumping the mineral powder into the second cyclone 5 through a second pump pool 4;
step three, adding a mixture of butyl sodium xanthate and second oil into a first stirring barrel 7, a fourth flotation tank 12, a second stirring barrel 29, a thirteenth flotation tank 39, a sixteenth flotation tank 42, a nineteen flotation tank 45 and a twenty-second flotation tank 48;
step four, after the mixture of the butyl sodium xanthate and the second oil in the mineral powder with the granularity of less than 75 microns in the first stirring barrel 7 is stirred and mixed, the mineral powder is firstly subjected to rough concentration in the first group of flotation tanks 21, then the mineral powder is screened by the first gate valve 62 and then enters the second group of flotation tanks 22 for primary concentration, the mineral powder is firstly mixed with the mixture of the butyl sodium xanthate and the second oil in the fourth group of flotation tanks 12, then the mineral powder is subjected to primary concentration in the second group of flotation tanks 22, then the mineral powder is screened by the second gate valve 63 and then enters the third group of flotation tanks 23 for secondary concentration, and then the mineral powder after secondary concentration is obtained; after the rough concentration and the two times of fine concentration are finished, slag concentrates in a first foam tank 11 and a second foam tank 16 are scraped for recycling, foams generated in the second foam tank 16 are scraped and put into a third flotation tank 10 for continuous rough concentration, foams generated in a third foam tank 17 are scraped and put into a second ball mill 6 for continuous crushing, foams generated in a fourth foam tank 20 are scraped, and a mixture of butyl sodium xanthate and second oil is added and then put into a fifth flotation tank 13 for continuous fine concentration;
pumping the mineral powder obtained in the step five and obtained in the step four after secondary concentration into a third cyclone 25 through a third pump pond 24 for third shunting, pumping the mineral powder with the granularity of less than 45 microns overflowing from the upper end of the third cyclone 25 into a fourth cyclone 28 through a fourth pump pond 27, crushing the mineral powder with the granularity of more than 45 microns in a third ball mill 26 from the bottom end of the third cyclone 25, continuously pumping the mineral powder into the third cyclone 25 through the third pump pond 24 for shunting, pumping the mineral powder with the granularity of less than 45 microns into the fourth cyclone 28 for fourth shunting, pumping the mineral powder with the granularity of less than 45 microns in the upper end of the fourth cyclone 28 into a second stirring barrel 29, and continuously crushing the mineral powder with the granularity of more than 45 microns in the third ball mill 26 from the bottom of the fourth cyclone 28;
step six, the mineral powder with the particle size of less than 45 μm obtained in the step five enters a fourth group of flotation tanks 30 for first scavenging after being stirred and mixed with the mixture of the butyl sodium xanthate and the second oil in a second stirring barrel 29, enters a thirteenth group of flotation tanks 39 after being screened by a third gate valve 57 in the first scavenging process and is mixed with the mixture of the butyl sodium xanthate and the second oil, enters a fifth group of flotation tanks 31 for second scavenging after being screened by a fourth gate valve 58 after being subjected to the first scavenging of the fourth group of flotation tanks 30, is subjected to mixed scavenging with the mixture of the butyl sodium xanthate and the second oil in a sixteenth flotation tank 42 and then is subjected to scavenging in a seventeen flotation tank 43 and an eighteen flotation tank 44, and is subjected to mixed scavenging with the mixture of the butyl sodium xanthate and the second oil in a nineteenth flotation tank 45, screening by a fifth gate valve 59, then entering a No. twenty-four flotation tank 46 and a No. twenty-first flotation tank 47 for scavenging, finally mixing and scavenging with a mixture of butyl sodium xanthate and No. two oil in a No. twenty-two flotation tank 48, then entering mineral powder into a sixth group of flotation tanks 32 for third scavenging by a sixth gate valve 60, and obtaining bottom sand after passing the mineral powder through a seventh gate valve 61 after the third scavenging; after the third scavenging is completed, slag concentrate in the fifth foam tank 51 is scraped for recycling, foam in the sixth foam tank 52 is scraped and put into the first flotation tank 8 for roughing continuously, foam in the seventh foam tank 53 is scraped and put into the fourth flotation tank 12 for fine separation continuously, foam in the eighth foam tank 54 is scraped and put into the second ball mill 6 for crushing continuously, foam in the ninth foam tank 55 is scraped and put into the third ball mill 26 for crushing continuously, and foam in the tenth foam tank 56 is scraped and put into the sixteenth flotation tank 42 for scavenging continuously;
pumping the bottom sand obtained in the seventh step and the sixth step into a tailing thickener 34 through a tailing pump pond 33 for concentration, and then, introducing the concentrated bottom sand into a tailing filter 35 for dehydration to obtain tailings; the copper content of the tailings is only 0.17%;
wherein the mass ratio of the butyl sodium xanthate to the second oil in the mixture of the butyl sodium xanthate and the second oil in the third step, the fourth step and the sixth step is 1: 1; the mass of the mixture of the butyl sodium xanthate and the second oil in the third step, the fourth step and the sixth step is the same, and the mass ratio of the mineral powder with the granularity smaller than 75 mu m in the first stirring barrel 7 in the fourth step to the mixture of the butyl sodium xanthate and the second oil is 1: 1.
the above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (3)
1. An application of a slag separation system for reducing copper content in tailings,
the slag separation system comprises a first ball grinding machine (1), wherein the first ball grinding machine (1) is connected with a first pump pool (2) through a pipeline, the first pump pool (2) is connected with a first swirler (3) through a pipeline, the bottom end of the first swirler (3) stretches out of the pipeline to be connected with the first ball grinding machine (1), the upper end of the first swirler (3) is connected with a second pump pool (4) through a pipeline, the second pump pool (4) is connected with a second swirler (5) through a pipeline, the bottom end of the second swirler (5) stretches out of the pipeline to be connected with a second ball mill (6), the second ball mill (6) is connected with the second pump pool (4) through a pipeline, the upper end of the second swirler (5) is connected with a first stirring barrel (7) through a pipeline, the first stirring barrel (7) is connected with one end of a first group of flotation tanks (21) through a pipeline, the other end of the first group of flotation tanks (21) is connected with one end of a second group of flotation tanks (22, the other end of second group flotation cell (22) passes through the one end of pipe connection third group flotation cell (23), the other end of third group flotation cell (23) passes through pipe connection No. three pump ponds (24), No. three pump ponds (24) have No. three swirler (25) through pipe connection, No. three swirler (25)'s bottom has No. three ball mill (26) through pipe connection, No. three ball mill (26) pass through the pipeline with No. three pump ponds (24) are connected, No. four swirler (25)'s upper end has No. four pump ponds (27) through pipe connection, No. four pump ponds (27) have No. four swirler (28) through pipe connection, No. four swirler (28)'s bottom passes through pipe connection No. three ball mill (26), No. two agitator (29) are passed through pipe connection to No. four swirler (28)'s upper end, No. two agitator (29) pass through the one end of pipe connection fourth group flotation cell (30), the other end of the fourth group of flotation tank (30) is connected with one end of a fifth group of flotation tank (31) through a pipeline, the other end of the fifth group of flotation tank (31) is connected with one end of a sixth group of flotation tank (32) through a pipeline, the other end of the sixth group of flotation tank (32) is connected with a tailing pump pond (33) through a pipeline, the tailing pump pond (33) is connected with a tailing thickener (34) through a pipeline, and the tailing thickener (34) is connected with a tailing filter (35) through a pipeline; the first group of flotation tanks (21) sequentially comprise a first flotation tank (8), a second flotation tank (9) and a third flotation tank (10); the second group of flotation tanks (22) sequentially comprise a fourth flotation tank (12), a fifth flotation tank (13), a sixth flotation tank (14) and a seventh flotation tank (15); the third group of flotation tanks (23) sequentially comprise an eighth flotation tank (18) and a ninth flotation tank (19); the fourth group of flotation tanks (30) sequentially comprise a No. ten flotation tank (36), a No. eleven flotation tank (37), a No. twelve flotation tank (38), a No. thirteen flotation tank (39), a No. ten-four flotation tank (40) and a No. fifteen flotation tank (41); the fifth group of flotation tanks (31) sequentially comprise a sixteen flotation tank (42), a seventeen flotation tank (43), an eighteen flotation tank (44), a nineteen flotation tank (45), a twenty-four flotation tank (46), a twenty-first flotation tank (47) and a twenty-second flotation tank (48); the sixth group of flotation tanks (32) sequentially comprise a twenty-third flotation tank (49) and a twenty-fourth flotation tank (50); the lower extreme of first set of flotation cell (21) is provided with first froth groove (11), the lower extreme of No. four flotation cell (12) is provided with second froth groove (16), the lower extreme of No. five flotation cell (13), No. six flotation cell (14) and No. seven flotation cell (15) is provided with third froth groove (17), the lower extreme of third set of flotation cell (23) is provided with fourth froth groove (20), the bottom of No. ten flotation cell (36) is provided with fifth froth groove (51), the bottom of No. eleven flotation cell (37) is provided with sixth froth groove (52), the bottom of No. twelve flotation cell (38), No. thirteen flotation cell (39), No. ten fourth flotation cell (40) and No. fifteen flotation cell (41) is provided with seventh froth groove (53), the bottom of No. sixteen flotation cell (42), No. seventeen flotation cell (43) and No. eighteen flotation cell (44) is provided with eighth froth groove (54), a ninth foam tank (55) is arranged at the bottom of the nineteen flotation tank (45), the twenty-fourth flotation tank (46), the twenty-first flotation tank (47) and the twenty-second flotation tank (48), and a tenth foam tank (56) is arranged at the bottom of the sixth group of flotation tanks (32); the number of the scrapers in the first foam groove (11) is 4; a first gate valve (62) is arranged at the joint of the third flotation tank (10) and the pipeline, a second gate valve (63) is arranged at the joint of the seventh flotation tank (15) and the pipeline, a third gate valve (57) is arranged between the twelfth flotation tank (38) and the thirteenth flotation tank (39), a fourth gate valve (58) is arranged at the joint of the fifteenth flotation tank (41) and the pipeline, a fifth gate valve (59) is arranged between the nineteen flotation tank (45) and the twenty-fourth flotation tank (46), a sixth gate valve (60) is arranged at the joint of the twenty-second flotation tank (48) and the pipeline, and a seventh gate valve (61) is arranged at the joint of the twenty-fourth flotation tank (50) and the pipeline;
it is characterized in that;
the slag separation system for reducing the copper content of the tailings is used for reducing the copper content of the tailings, and the method comprises the following steps:
firstly, placing bottom blowing slag from a copper smelting bottom blowing furnace and converter slag from a converter into a slag ladle for slow cooling to obtain slag ore dressing, and crushing and screening the slag ore dressing to obtain slag powder ore with the particle size of less than 12 mm;
step two, putting the slag powder ore obtained in the step one into a first ball grinding machine (1) for crushing to obtain coarse mineral powder, pumping the coarse mineral powder into a first cyclone (3) through a first pump pool (2) for primary classification, overflowing mineral powder with the granularity of less than 0.85mm from the upper end of the first cyclone (3), feeding the mineral powder with the granularity of more than 0.85mm into the first ball grinding machine (1) for continuous crushing from the bottom end of the first cyclone (3), pumping the mineral powder with the granularity of less than 0.85mm into a second cyclone (5) through a second pump pool (4) for secondary classification, feeding the mineral powder with the granularity of less than 75 mu m into a first stirring barrel (7), feeding the mineral powder with the granularity of more than 75 mu m into a second ball grinding machine (6) from the bottom end of the second cyclone (5), crushing, and pumping the mineral powder into the second cyclone (5) through the second pump pool (4);
step three, adding a mixture of butyl sodium xanthate and second oil into a first stirring barrel (7), a fourth flotation tank (12), a second stirring barrel (29), a thirteenth flotation tank (39), a sixteenth flotation tank (42), a nineteen flotation tank (45) and a twenty-second flotation tank (48);
step four, after the mixture of the butyl sodium xanthate and the second oil in the mineral powder with the granularity of less than 75 microns in the first stirring barrel (7) is stirred and mixed, the mineral powder is firstly subjected to rough concentration in a first group of flotation tanks (21), then the mineral powder is screened by a first gate valve (62) and then enters a second group of flotation tanks (22) for primary concentration, the mineral powder is firstly mixed with the mixture of the butyl sodium xanthate and the second oil in a fourth group of flotation tanks (12), then the mineral powder is subjected to primary concentration in the second group of flotation tanks (22), then the mineral powder is screened by a second gate valve (63) and then enters a third group of flotation tanks (23) for secondary concentration, and mineral powder after secondary concentration is obtained; after roughing and twice fine concentration are finished, slag concentrate in a first foam tank (11) and a second foam tank (16) is scraped for recycling, foam generated in the second foam tank (16) is scraped and put into a third flotation tank (10) for continuous roughing, foam generated in the third foam tank (17) is scraped and put into a second ball mill (6) for continuous crushing, foam generated in a fourth foam tank (20) is scraped, a mixture of butyl sodium xanthate and second oil is added, and then the mixture is put into a fifth flotation tank (13) for continuous concentration;
pumping the mineral powder obtained in the step four after secondary concentration into a third cyclone (25) through a third pump pool (24) for third shunting, pumping the mineral powder overflowing from the upper end of the third cyclone (25) and having the granularity of less than 45 mu m into a fourth cyclone (28) through a fourth pump pool (27), and the mineral powder with the granularity of more than 45 mu m enters a third ball mill (26) from the bottom end of the third cyclone (25) to be crushed, continuously pumping the mixture into a third cyclone (25) for flow distribution through a third pump pool (24), the mineral powder with the granularity of less than 45 mu m is pumped into a fourth cyclone (28) for fourth diversion, the mineral powder with the granularity of less than 45 mu m overflows from the upper end of the fourth cyclone (28) and enters a second stirring barrel (29), the mineral powder with the granularity of more than 45 mu m enters a third ball mill (26) from the bottom of a fourth cyclone (28) to be continuously crushed;
step six, the mineral powder with the particle size of less than 45 mu m obtained in the step five enters a fourth group of flotation tanks (30) for first scavenging after being stirred and mixed with the mixture of the butyl sodium xanthate and the second oil in a second stirring barrel (29), enters a thirteenth group of flotation tanks (39) after being screened by a third gate valve (57) in the first scavenging process and then is mixed with the mixture of the butyl sodium xanthate and the second oil, enters a fifth group of flotation tanks (31) for second scavenging after being screened by a fourth gate valve (58) after being subjected to the first scavenging of the fourth group of flotation tanks (30), is subjected to mixed scavenging with the mixture of the butyl sodium xanthate and the second oil in a sixteenth flotation tank (42) in the second scavenging, is subjected to mixed scavenging with the mixture of the butyl sodium xanthate and the second oil in a seventeen flotation tank (43) and an eighteen flotation tank (44), and is subjected to mixed scavenging with the mixture of the butyl sodium xanthate and the second oil in a nineteenth flotation tank (45), screening by a fifth gate valve (59), then entering a twenty-fourth flotation tank (46) and a twenty-first flotation tank (47) for scavenging, finally carrying out mixed scavenging with a mixture of butyl sodium xanthate and second oil in a twenty-second flotation tank (48), entering mineral powder into a sixth group of flotation tanks (32) for third scavenging by a sixth gate valve (60), and obtaining bottom sand after passing the mineral powder through a seventh gate valve (61) after the third scavenging; after the third scavenging is finished, slag concentrate in a fifth foam tank (51) is scraped for recycling, foam in a sixth foam tank (52) is scraped and put into a first flotation tank (8) for continuous roughing, foam in a seventh foam tank (53) is scraped and put into a fourth flotation tank (12) for continuous concentration, foam in an eighth foam tank (54) is scraped and put into a second ball mill (6) for continuous crushing, foam in a ninth foam tank (55) is scraped and put into a third ball mill (26) for continuous crushing, and foam in a tenth foam tank (56) is scraped and put into a sixteenth flotation tank (42) for continuous scavenging;
pumping the bottom sand obtained in the seventh step and the sixth step into a tailing thickener (34) through a tailing pump pond (33) for concentration, and then, dewatering the bottom sand in a tailing filter (35) to obtain tailings.
2. The use of claim 1, wherein the mass ratio of the butyl sodium xanthate to the second oil in the mixture of the butyl sodium xanthate and the second oil in the third step, the fourth step and the sixth step is 1: 1.
3. the application of the method according to claim 1, wherein the mass of the mixture of the sodium butyl xanthate and the second oil in the third step, the fourth step and the sixth step is the same, and the mass ratio of the mineral powder with the particle size of less than 75 μm in the first stirring barrel (7) in the fourth step to the mixture of the sodium butyl xanthate and the second oil is 1: 1.
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