Zinc-sulfur green low-carbon flotation method

Abstract

The invention discloses a zinc-sulfur green low-carbon flotation method which comprises the following steps: ore pulp subjected to stirring treatment automatically flows into zinc-sulfur mixed roughing operation, foam subjected to roughing operation is subjected to fine selection, underflow subjected to roughing operation is subjected to scavenging, and underflow subjected to three times of scavenging operation is tailings; foams subjected to concentration in the zinc-sulfur mixed flotation coarse-fine scavenging step automatically flow into a stirring barrel, a product subjected to stirring is subjected to zinc-sulfur separation roughing operation, foams subjected to separation roughing are subjected to concentration, and foams subjected to two times of concentration are zinc concentrate; underflow after separation and roughing is subjected to scavenging, and underflow after three times of scavenging is sulfur concentrate. According to the method, the problems that in a traditional preferential flotation process, a large amount of lime is used for inhibiting pyrite during zinc separation, a large amount of sulfuric acid needs to be adopted for activating pyrite during sulfur separation, limitation exists during zinc and sulfur recovery, and potential safety and environmental protection hazards exist are solved; the tailings are discarded in advance, the chemical consumption and the power consumption are saved, the safety and environmental protection hidden danger caused by using sulfuric acid is eliminated, and green, low-carbon and efficient separation of zinc and sulfur is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of nonferrous metal ore flotation, in particular to a zinc-sulfur green low-carbon flotation method. Background Art

[0002] The flotation system of a non-ferrous metal lead, zinc and sulfur polymetallic mine in East China originally adopted the priority flotation process. The priority flotation process is mainly used to process ores containing multiple useful minerals, such as sulfide lead-zinc ore. Its basic principle is to first float out one mineral, then suppress other minerals, and finally activate and float another mineral. The priority flotation process is as follows: first, add a zinc-sulfur mineral inhibitor and a lead collector to float out the lead mineral to obtain a lead concentrate, and zinc and sulfur and other minerals are lead tailings; then add a large amount of lime to the lead tailings to suppress pyrite, add a zinc activator and a collector to float out the zinc mineral to obtain a zinc concentrate, and sulfur minerals and others are zinc tailings; then add sulfuric acid to the zinc tailings to activate the suppressed pyrite, and add a collector to float to obtain a sulfur concentrate. That is, lead, zinc, sulfur and other polymetallic separations are carried out in sequence. In the above zinc selection process, a large amount of lime is used to suppress pyrite, resulting in the need to use sulfuric acid to activate pyrite in the sulfur selection process. Although safety measures are taken during the transportation, storage and use of sulfuric acid, there are still safety and environmental risks. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a green and low-carbon zinc-sulfur flotation method in view of the deficiencies of the above-mentioned prior art. The green and low-carbon zinc-sulfur flotation method changes the traditional preferential flotation process, which uses a large amount of lime to suppress pyrite when selecting zinc, and a heavy pressure and heavy pulling method that requires a large amount of sulfuric acid to activate pyrite when selecting sulfur, and has limitations in zinc and sulfur recovery, and has safety and environmental protection risks. It realizes the early disposal of tailings, saves drug consumption and electricity consumption, eliminates the safety and environmental protection risks of using sulfuric acid, and realizes green, low-carbon and efficient separation of zinc and sulfur.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0005] A green low-carbon zinc-sulfur flotation method, comprising a zinc-sulfur mixed flotation coarse and fine scavenging step and a zinc-sulfur separation coarse and fine scavenging step;

[0006] The zinc-sulfur mixed flotation rough and fine sweeping steps include:

[0007] The slurry is fully stirred after adding activator, frother and collector in sequence. After fully reacting with the reagent, the slurry flows by gravity into the zinc-sulfur mixed selection roughing operation. The foam after the zinc-sulfur mixed selection roughing operation enters the selection operation through the slurry suction effect of the XCF flotation machine. The foam after the selection operation enters the zinc-sulfur separation rough and fine scavenging step through the slurry suction effect of the stirring barrel. The bottom flow after the selection operation returns to the zinc-sulfur mixed selection roughing operation; the bottom flow after the zinc-sulfur mixed selection roughing operation enters the scavenging operation through the slurry suction effect of the XCF flotation machine. The bottom flow after three scavenging operations is tailings, and the foam after each scavenging operation is returned to the previous level.

[0008] The zinc-sulfur separation rough and fine sweeping steps include:

[0009] The foam after the selection operation in the zinc-sulfur mixed flotation rough and fine scavenging step enters the mixing barrel through the slurry absorption effect. After adding lime for sufficient stirring, the slurry enters the zinc-sulfur separation rough selection operation through the slurry absorption effect of the XCF flotation machine. The foam after the zinc-sulfur separation rough selection operation enters the selection operation through the slurry absorption effect of the XCF flotation machine. After two selection operations, the foam is zinc concentrate, and the underflow after each selection operation is returned to the previous level; the underflow after the zinc-sulfur separation rough selection operation enters the scavenging operation through the slurry absorption effect of the XCF flotation machine. After three scavenging operations, the underflow is sulfur concentrate, and the foam after each scavenging operation is returned to the previous level.

[0010] As a further improved technical solution of the present invention, in the zinc-sulfur mixed flotation coarse and fine scavenging step, a collector is added for scavenging in each of the three scavenging operations;

[0011] In the coarse and fine scavenging steps of zinc-sulfur separation, a collector is added for scavenging in each of the three scavenging operations; lime is added for concentrating in the first concentrating operation.

[0012] As a further improved technical solution of the present invention, the collector is butyl xanthate and the activator is copper sulfate.

[0013] As a further improved technical solution of the present invention, the zinc-sulfur mixed flotation coarse and fine scavenging step specifically includes:

[0014] a1. The ore pulp enters the mixing barrel 1 under the action of slurry suction, copper sulfate and pine oil are added to the mixing barrel 1, and the ore pulp after fully reacting with the reagent flows to the mixing barrel 2 by gravity, butyl xanthate is added to the mixing barrel 2, and the ore pulp after fully reacting with the reagent enters the first tank XCF flotation machine in the zinc-sulfur mixed roughing component (B1) under the action of slurry suction;

[0015] a2. The zinc-sulfur mixed selection roughing component adopts a three-tank flotation machine, including a first tank XCF flotation machine, a second tank XCF flotation machine and a third tank KYF flotation machine connected in sequence; the zinc-sulfur mixed selection roughing operation is carried out in the zinc-sulfur mixed selection roughing component, and the foam after the zinc-sulfur mixed selection roughing operation flows into the XCF flotation machine of the mixed fine component through the slurry suction effect of the XCF flotation machine; the bottom flow after the zinc-sulfur mixed selection roughing operation flows into the XCF flotation machine of the mixed sweep component through the slurry suction effect of the XCF flotation machine;

[0016] a3. Add butyl xanthate to the first mixed sweeping component, and the first mixed sweeping component performs the first sweeping operation. The foam after the sweeping operation returns to the second trough XCF flotation machine in the zinc-sulfur mixed roughing component. The bottom flow after the sweeping operation flows into the XCF flotation machine in the second mixed sweeping component through the slurry suction effect of the XCF flotation machine;

[0017] a4. Add butyl xanthate into the second mixing and sweeping component, and the second mixing and sweeping component performs the second sweeping operation. The foam after the sweeping operation returns to the XCF flotation machine in the first mixing and sweeping component; the bottom flow after the sweeping operation flows into the XCF flotation machine in the third mixing and sweeping component through the slurry suction effect of the XCF flotation machine;

[0018] a5. Add butyl xanthate to the mixed sweep component three, and the mixed sweep component three performs the third sweeping operation. The foam after the sweeping operation returns to the XCF flotation machine in the mixed sweep component two; the bottom flow after the sweeping operation is the tailings, which flows into the tailings pump pool by gravity;

[0019] a6. The first selection operation is carried out in the mixed and refined component. The foam after the selection operation flows into the mixing barrel three in the zinc-sulfur separation rough and refined sweeping step; the bottom flow after the selection operation returns to the first tank XCF flotation machine in the zinc-sulfur mixed selection roughing component through the slurry suction effect of the XCF flotation machine.

[0020] As a further improved technical solution of the present invention, the zinc-sulfur separation coarse and fine scavenging step specifically includes:

[0021] b1. Add lime into the mixing barrel 3, and the product after mixing flows into the mixing barrel 4 by gravity. After the slurry in the mixing barrel 4 and the reagent fully react, it enters the XCF flotation machine in the zinc-sulfur separation roughing assembly through the slurry suction action of the XCF flotation machine;

[0022] b2. The zinc-sulfur separation roughing component performs zinc-sulfur separation roughing operation. The foam after the separation roughing operation flows into the XCF flotation machine of the separation refinement component through the slurry suction effect of the XCF flotation machine; the bottom flow after the separation roughing operation flows into the XCF flotation machine of the separation sweeping component through the slurry suction effect of the XCF flotation machine;

[0023] b3. Add butyl xanthate to the separation sweeping component 1, and the separation sweeping component 1 performs the first sweeping operation. The foam after the sweeping operation is returned to the XCF flotation machine of the zinc-sulfur separation roughing component through the slurry suction effect of the XCF flotation machine; the bottom flow after the sweeping operation is returned to the XCF flotation machine of the separation sweeping component 2 through the slurry suction effect of the XCF flotation machine;

[0024] b4. Add butyl xanthate to the separation sweeping component 2, and the separation sweeping component 2 performs a second sweeping operation. The foam after the sweeping operation is returned to the XCF flotation machine of the separation sweeping component 1 through the slurry suction effect of the XCF flotation machine; the bottom flow after the sweeping operation is returned to the XCF flotation machine of the separation sweeping component 3 through the slurry suction effect of the XCF flotation machine;

[0025] b5. Add butyl xanthate to the separation sweeping component 3, and the separation sweeping component 3 performs the third sweeping operation. The foam after the sweeping operation is returned to the XCF flotation machine of the separation sweeping component 2 through the slurry suction effect of the XCF flotation machine. The bottom flow after the sweeping operation is sulfur concentrate;

[0026] b6. Add lime to the separation and refinement component 1, and the separation and refinement component 1 performs the first concentration operation. The foam after the concentration operation flows into the XCF flotation machine of the separation and refinement component 2 through the slurry suction effect of the XCF flotation machine; the bottom flow after the concentration operation returns to the XCF flotation machine of the zinc-sulfur separation roughing component through the slurry suction effect of the XCF flotation machine;

[0027] b7. The separation and refinement component No. 2 performs the second concentration operation. The foam after the concentration operation is zinc concentrate. The bottom flow after the concentration operation returns to the XCF flotation machine of the separation and refinement component No. 1 through the slurry suction effect of the XCF flotation machine.

[0028] As a further improved technical solution of the present invention, the mixed sweep component 1, the mixed sweep component 2, the mixed sweep component 3 and the mixed fine component 1 all adopt a double-tank flotation machine, including a tank XCF flotation machine and a tank KYF flotation machine that are interconnected;

[0029] The zinc-sulfur separation roughing assembly, separation refining assembly 1, separation scavenging assembly 1, separation scavenging assembly 2 and separation scavenging assembly 3 all adopt double-trough flotation machines, including a one-trough XCF flotation machine and a one-trough KYF flotation machine connected to each other; the separation refining assembly 2 adopts a single-trough flotation machine, including a one-trough XCF flotation machine.

[0030] As a further improved technical solution of the present invention, the mixing barrel 1 is connected to the mixing barrel 2 through a pipeline, the mixing barrel 2 is connected to the first tank XCF flotation machine in the zinc-sulfur mixed selection roughing assembly through a pipeline, the underflow outlet of the zinc-sulfur mixed selection roughing assembly is connected to the XCF flotation machine in the mixing sweeping assembly through a pipeline, the foam tank of the zinc-sulfur mixed selection roughing assembly is connected to the XCF flotation machine in the mixing and refining assembly through a pipeline; the underflow outlet of the mixing and refining assembly is connected to the first tank XCF flotation machine in the zinc-sulfur mixed selection roughing assembly through a pipeline; the mixing and refining assembly The foam tank in the mixing and sweeping component is connected with the mixing barrel three through a pipeline; the underflow outlet in the mixing and sweeping component one is connected with the XCF flotation machine in the mixing and sweeping component two through a pipeline, and the underflow outlet in the mixing and sweeping component two is connected with the XCF flotation machine in the mixing and sweeping component three through a pipeline; the foam tank of the mixing and sweeping component one is connected with the second tank XCF flotation machine in the zinc-sulfur mixed separation roughing component through a pipeline, and the foam tank of the mixing and sweeping component two is connected with the XCF flotation machine in the mixing and sweeping component one through a pipeline; the foam tank of the mixing and sweeping component three is connected with the XCF flotation machine in the mixing and sweeping component two through a pipeline.

[0031] As a further improved technical solution of the present invention, the stirring barrel three is connected with the stirring barrel four through a pipeline, the stirring barrel four is connected with the XCF flotation machine in the zinc-sulfur separation roughing assembly through a pipeline, the underflow outlet of the zinc-sulfur separation roughing assembly is connected with the XCF flotation machine in the separation sweeping assembly one through a pipeline, the underflow outlet of the separation sweeping assembly one is connected with the XCF flotation machine in the separation sweeping assembly two through a pipeline, the underflow outlet of the separation sweeping assembly two is connected with the XCF flotation machine in the separation sweeping assembly three through a pipeline; the foam tank of the separation sweeping assembly one is connected with the XCF flotation machine in the zinc-sulfur separation roughing assembly through a pipeline, The foam tank of the separation sweeping component II is connected with the XCF flotation machine in the separation sweeping component I through a pipeline, and the foam tank of the separation sweeping component III is connected with the XCF flotation machine in the separation sweeping component II through a pipeline; the foam tank of the zinc-sulfur separation roughing component is connected with the XCF flotation machine in the separation refining component I through a pipeline, and the foam tank of the separation refining component I is connected with the XCF flotation machine in the separation refining component II through a pipeline; the underflow outlet of the separation refining component I is connected with the XCF flotation machine in the zinc-sulfur separation roughing component through a pipeline, and the underflow outlet of the separation refining component II is connected with the XCF flotation machine in the separation refining component I through a pipeline.

[0032] As a further improved technical solution of the present invention, the mixing barrel 1 and the mixing barrel 2 both adopt a mixing barrel with an inner diameter of 2400mm and a height of 2400mm; the mixing barrel 3 and the mixing barrel 4 both adopt a mixing barrel with an inner diameter of 2200mm and a height of 2200mm.

[0033] As a further improved technical solution of the present invention, the XCF flotation machine is an XCF-8 slurry suction type aerated mechanical stirring flotation machine, and the KYF flotation machine is a KYF-8 type aerated mechanical stirring flotation machine.

[0034] In the present invention, the feed slurry enters the zinc-sulfur mixed selection roughing assembly through the stirring barrel 1 and the stirring barrel 2 for zinc-sulfur mixed selection roughing operation. The first tank in the zinc-sulfur mixed selection roughing assembly is equipped with an XCF-8 slurry suction type aerated mechanical stirring flotation machine, the second tank is equipped with an XCF-8 slurry suction type aerated mechanical stirring flotation machine, and the third tank is equipped with a KYF-8 aerated mechanical stirring flotation machine. The foam product in the zinc-sulfur mixed selection roughing assembly enters the mixing and fine assembly 1 for fine selection operation. The underflow product in the zinc-sulfur mixed selection roughing assembly enters the mixing and sweeping assembly 1 for sweeping operation. The first tank of the mixing and fine assembly 1 is equipped with an XCF-8 slurry suction type aerated mechanical stirring flotation machine, and the second tank is equipped with an XCF-8 aerated mechanical stirring flotation machine. The mixing and sweeping assembly 1, the mixing and sweeping assembly 2, and the mixing and sweeping assembly 3 are all equipped with an XCF-8 slurry suction type aerated mechanical stirring flotation machine in the first tank, and a KYF-8 aerated mechanical stirring flotation machine in the second tank. The bottom flow product after the selection operation of the mixed and refined component 1 returns to the zinc-sulfur mixed selection roughing component. The concentrate product after the selection operation of the mixed and refined component 1 passes through the mixing barrel 3 and the mixing barrel 4 and enters the zinc-sulfur separation roughing component. The foam products after the scavenging operation of the mixed and swept component 1, the mixed and swept component 2, and the mixed and swept component 3 return in sequence. The bottom flow product after the scavenging operation of the mixed and swept component 3 is the final tailings; early tailings are discarded here. The zinc-sulfur separation roughing component, the separation and refined component 1, the separation and swept component 1, the separation and swept component 2, and the separation and swept component 3 in the zinc-sulfur separation rough and refined scavenging step all use double-slot flotation machines. The first slot is equipped with an XCF-8 slurry suction type aerated mechanical agitation flotation machine, and the second slot is an XCF-8 aerated mechanical agitation flotation machine. The separation and refined component 2 uses a single-slot flotation machine, including an XCF-8 slurry suction type aerated mechanical agitation flotation machine. The foam product after the roughing operation of the zinc-sulfur separation roughing component enters the separation refining component 1 for concentrating operation, and the foam product after the concentrating operation of the separation refining component 1 enters the separation refining component 2 for concentrating operation. The foam product after the concentrating operation of the separation refining component 2 is the final zinc concentrate. The underflow products of the separation refining component 1 and the separation refining component 2 are returned in sequence. The underflow product after the roughing operation of the zinc-sulfur separation roughing component flows into the separation sweeping component 1, and the underflow product after the scavenging operation of the separation sweeping component 1 flows into the separation sweeping component 2, and the underflow product after the scavenging operation of the separation sweeping component 2 flows into the separation sweeping component 3, and the underflow product after the scavenging operation of the separation sweeping component 3 is sulfur concentrate; the foam products after the scavenging operation of the separation sweeping component 1, the separation sweeping component 2 and the separation sweeping component 3 are returned in sequence.

[0035] The present invention uses a combination of an XCF slurry suction type aerated mechanical stirring flotation machine and a KYF aerated mechanical stirring flotation machine to perform zinc-sulfur mixed flotation rough and fine scavenging and zinc-sulfur separation rough and fine scavenging operations, thereby inventing a new zinc-sulfur green low-carbon flotation process, achieving early tailing, no sulfuric acid, low lime, green low-carbon and efficient zinc-sulfur separation. Zinc concentrate, sulfur concentrate and tailings are quickly produced through a simple and efficient process, realizing a new zinc-sulfur green low-carbon flotation process.

[0036] The beneficial effects of the present invention are:

[0037] In the zinc-sulfur mixed flotation roughing and scavenging step, the zinc-sulfur mixed concentrate is quickly floated out and directly sent to the first mixing and scavenging component under the roughing operation of the zinc-sulfur mixed selection roughing component; the target mineral zinc and sulfur are floated cleanly through the first roughing and three scavenging, and the tailings are discharged in advance, so as to achieve energy saving. The first concentrating operation of the first mixing and scavenging component purifies the zinc-sulfur mixed concentrate, and then sends it to the zinc-sulfur separation roughing and scavenging step for zinc-sulfur separation operation. In the two operations of zinc-sulfur mixed flotation rough and fine scavenging step and zinc-sulfur separation rough and fine scavenging step, due to zinc-sulfur mixed flotation, a large amount of lime is saved compared with the original priority flotation process; through the above zinc-sulfur mixed flotation rough and fine scavenging and zinc-sulfur separation rough and fine scavenging steps, by using the XCF slurry suction type aerated mechanical stirring flotation machine and the KYF aerated mechanical stirring flotation machine combined configuration process, a simple and efficient process quickly produces zinc concentrate, sulfur concentrate, and tailings, realizing zinc-sulfur green low-carbon flotation, realizing early discharge of tailings, energy saving, and reducing the amount of lime added to save reagent costs, changing the traditional priority flotation process that uses a large amount of lime to suppress pyrite when flotating zinc, and a large amount of sulfuric acid is required to activate pyrite when flotating sulfur. The heavy pressure and heavy pulling method, as well as the limitations and safety and environmental protection risks in zinc and sulfur recovery, have achieved early disposal of tailings, saving drug and electricity consumption, eliminating the safety and environmental protection risks of using sulfuric acid, and realizing green, low-carbon and efficient separation of zinc and sulfur.

[0038] The zinc-sulfur mixed roughing component of the present invention adopts a three-slot flotation machine. By continuing to use the XCF flotation machine in the second slot, the foam product of the mixed sweeping component is sucked into the roughing operation by the second slot XCF flotation machine alone, and the roughing feed of the mixing barrel and the selected underflow product of the mixed fine component are sucked into the roughing operation by the first slot XCF flotation machine. A two-slot XCF flotation machine and a one-slot KYF flotation machine are used in combination, and the feed slurry circuit enters the first slot XCF flotation machine and the second slot XCF flotation machine respectively. By diverting the suction slurry pressure of the XCF flotation machine configured in the first slot, the speed of the scavenging foam product and the selected underflow product entering the roughing is accelerated at the same time, thereby solving the overflow of the scavenging foam tank, solving the problem that the foam product cannot be completely and timely sucked back to the roughing operation through the XCF flotation machine, affecting the ore discharge operation of the selected underflow product, resulting in low quality of the concentrate product and high tailings of the tailings product. The effective output of the mixed roughing product is achieved, which is helpful for the effective separation of the subsequent mixed products and the tailings control of the subsequent scavenging operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the structure of the present invention.

[0040] Figure 2 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention are further described below according to the accompanying drawings:

[0042] A zinc-sulfur green low-carbon flotation method comprises a zinc-sulfur mixed flotation coarse and fine scavenging step and a zinc-sulfur separation coarse and fine scavenging step.

[0043] The zinc-sulfur mixed flotation rough and fine scavenging step includes: adding an activator, a frother and a collector to the slurry in sequence and then stirring it fully. After fully reacting with the reagents, the slurry flows by gravity into the zinc-sulfur mixed selection roughing operation. The foam after the zinc-sulfur mixed selection roughing operation enters the selection operation through the slurry suction effect of the XCF flotation machine. The foam after the selection operation enters the zinc-sulfur separation rough and fine scavenging step through the slurry suction effect of the stirring barrel. The bottom flow after the selection operation returns to the zinc-sulfur mixed selection roughing operation; the bottom flow after the zinc-sulfur mixed selection roughing operation enters the scavenging operation through the slurry suction effect of the XCF flotation machine. The bottom flow after three scavenging operations is tailings, and the foam after each scavenging operation is returned to the previous level. Among them, a collector is added for scavenging in each of the three scavenging operations. The collector is butyl xanthate, and the activator is copper sulfate.

[0044] like Figure 1-2 As shown, the zinc-sulfur mixed flotation coarse and fine sweeping step specifically includes:

[0045] a1. The ore pulp enters the mixing barrel 1 under the action of slurry suction, copper sulfate and pine oil are added to the mixing barrel 1, and the ore pulp after fully reacting with the reagent flows to the mixing barrel 2 by gravity, butyl xanthate is added to the mixing barrel 2, and the ore pulp after fully reacting with the reagent enters the first tank XCF flotation machine in the zinc-sulfur mixed roughing component (B1) under the action of slurry suction;

[0046] a2. The zinc-sulfur mixed roughing component B1 adopts a three-tank flotation machine, including a first tank XCF flotation machine, a second tank XCF flotation machine and a third tank KYF flotation machine connected in sequence; zinc-sulfur mixed roughing operation is carried out in the zinc-sulfur mixed roughing component B1, and the foam after the zinc-sulfur mixed roughing operation flows into the XCF flotation machine of the mixed fine component B5 through the slurry suction effect of the XCF flotation machine; the bottom flow after the zinc-sulfur mixed roughing operation flows into the XCF flotation machine of the mixed sweep component B2 through the slurry suction effect of the XCF flotation machine;

[0047] a3. Add butyl xanthate into the first mixed sweeping component B2, and the first mixed sweeping component B2 performs the first sweeping operation. The foam after the sweeping operation returns to the second trough XCF flotation machine in the zinc-sulfur mixed roughing component B1. The bottom flow after the sweeping operation flows into the XCF flotation machine in the second mixed sweeping component B3 through the slurry suction effect of the XCF flotation machine.

[0048] a4. Add butyl xanthate into the second mixing and sweeping component B3, and the second mixing and sweeping component B3 performs the second sweeping operation. The foam after the sweeping operation returns to the XCF flotation machine in the first mixing and sweeping component B2; the bottom flow after the sweeping operation flows into the XCF flotation machine in the third mixing and sweeping component B4 through the slurry suction effect of the XCF flotation machine;

[0049] a5. Add butyl xanthate to the mixed sweep three component B4, and the mixed sweep three component B4 performs the third sweeping operation. The foam after the sweeping operation returns to the XCF flotation machine in the mixed sweep two component B3; the bottom flow after the sweeping operation is tailings, which flows into the tailings pump pool by gravity;

[0050] a6. The mixed and refined component B5 performs the first selection operation, and the foam after the selection operation flows into the mixing barrel three in the zinc-sulfur separation rough and fine sweeping step; the bottom flow after the selection operation returns to the first tank XCF flotation machine in the zinc-sulfur mixed selection roughing component B1 through the slurry suction effect of the XCF flotation machine.

[0051] The zinc-sulfur separation rough and fine scavenging step includes: the foam after the selection operation in the zinc-sulfur mixed flotation rough and fine scavenging step flows into the mixing barrel by gravity, lime is added to the mixing barrel for stirring, the product after stirring enters the zinc-sulfur separation rough selection operation through the slurry absorption effect of the XCF flotation machine, the foam after the zinc-sulfur separation rough selection operation enters the selection operation through the slurry absorption effect of the XCF flotation machine, the foam after the two selection operations is zinc concentrate, and the bottom flow after each selection operation returns to the previous level; the bottom flow after the zinc-sulfur separation rough selection operation enters the scavenging operation through the slurry absorption effect of the XCF flotation machine, the bottom flow after three scavenging operations is sulfur concentrate, and the foam after each scavenging operation returns to the previous level. Among them, a collector is added for scavenging in each of the three scavenging operations; lime is added for selection in the first selection operation. The collector is butyl xanthate.

[0052] like Figure 1-2 As shown, the zinc-sulfur separation coarse and fine scavenging step specifically includes:

[0053] b1. Add lime into the mixing barrel 3, and the product after mixing flows into the mixing barrel 4 by gravity. After the slurry in the mixing barrel 4 and the reagent fully react, it enters the XCF flotation machine in the zinc-sulfur separation roughing component C1 through the slurry suction action of the XCF flotation machine;

[0054] b2. Zinc-sulfur separation roughing component C1 performs zinc-sulfur separation roughing operation. The foam after the separation roughing operation flows into the XCF flotation machine of the separation refinement component C2 through the slurry suction effect of the XCF flotation machine; the bottom flow after the separation roughing operation flows into the XCF flotation machine of the separation sweeping component C4 through the slurry suction effect of the XCF flotation machine;

[0055] b3. Add butyl xanthate into the separation scavenging component C4, and the separation scavenging component C4 performs the first scavenging operation. The foam after the scavenging operation is returned to the XCF flotation machine of the zinc-sulfur separation roughing component C1 through the slurry suction effect of the XCF flotation machine; the bottom flow after the scavenging operation is returned to the XCF flotation machine of the separation scavenging component C5 through the slurry suction effect of the XCF flotation machine;

[0056] b4. Add butyl xanthate into the separation and scavenging component C5, and the separation and scavenging component C5 performs a second scavenging operation. The foam after the scavenging operation is returned to the XCF flotation machine of the separation and scavenging component C4 through the slurry suction effect of the XCF flotation machine; the bottom flow after the scavenging operation is returned to the XCF flotation machine of the separation and scavenging component C6 through the slurry suction effect of the XCF flotation machine;

[0057] b5. Add butyl xanthate to the separation and scavenging three-component C6, and the separation and scavenging three-component C6 performs the third scavenging operation. The foam after the scavenging operation is returned to the XCF flotation machine of the separation and scavenging two-component C5 through the slurry suction effect of the XCF flotation machine. The bottom flow after the scavenging operation is sulfur concentrate;

[0058] b6. Add lime into the separation and refinement component C2, and the separation and refinement component C2 performs the first concentration operation. The foam after the concentration operation flows into the XCF flotation machine of the separation and refinement component C3 through the slurry suction effect of the XCF flotation machine; the bottom flow after the concentration operation returns to the XCF flotation machine of the zinc-sulfur separation roughing component C1 through the slurry suction effect of the XCF flotation machine;

[0059] b7. The separation and refinement component C3 performs the second concentration operation. The foam after the concentration operation is zinc concentrate. The bottom flow after the concentration operation is returned to the XCF flotation machine through the slurry suction effect of the XCF flotation machine and flows into the separation and refinement component C2.

[0060] The mixed sweeping assembly B2, mixed sweeping assembly B3, mixed sweeping assembly B4 and mixed sweeping assembly B5 all use double-slot flotation machines, including one XCF flotation machine and one KYF flotation machine connected to each other. The zinc-sulfur separation roughing assembly C1, separation and refinement assembly C2, separation sweeping assembly C4, separation sweeping assembly C5 and separation sweeping assembly C6 all use double-slot flotation machines, including one XCF flotation machine and one KYF flotation machine connected to each other. Separation and refinement assembly C3 uses a single-slot flotation machine, including one XCF flotation machine.

[0061] The mixing barrel 1 is connected to the mixing barrel 2 through a pipeline, the mixing barrel 2 is connected to the first tank XCF flotation machine in the zinc-sulfur mixed roughing assembly B1 through a pipeline, the underflow outlet of the zinc-sulfur mixed roughing assembly B1 is connected to the XCF flotation machine in the mixing and sweeping assembly B2 through a pipeline, the foam tank of the zinc-sulfur mixed roughing assembly B1 is connected to the XCF flotation machine in the mixing and fine assembly B5 through a pipeline; the underflow outlet of the mixing and fine assembly B5 is connected to the first tank XCF flotation machine in the zinc-sulfur mixed roughing assembly B1 through a pipeline; the foam tank in the mixing and fine assembly B5 is connected to the The mixing barrel is three-connected; the underflow outlet in the mixing and sweeping component B2 is connected to the XCF flotation machine in the mixing and sweeping component B3 through a pipeline, and the underflow outlet in the mixing and sweeping component B3 is connected to the XCF flotation machine in the mixing and sweeping component B4 through a pipeline; the foam tank of the mixing and sweeping component B2 is connected to the second tank XCF flotation machine in the zinc-sulfur mixed roughing component B1 through a pipeline, and the foam tank of the mixing and sweeping component B3 is connected to the XCF flotation machine in the mixing and sweeping component B2 through a pipeline; the foam tank of the mixing and sweeping component B4 is connected to the XCF flotation machine in the mixing and sweeping component B3 through a pipeline.

[0062] The stirring barrel three is connected with the stirring barrel four through a pipeline, the stirring barrel four is connected with the XCF flotation machine in the zinc-sulfur separation roughing assembly C1 through a pipeline, the underflow outlet of the zinc-sulfur separation roughing assembly C1 is connected with the XCF flotation machine in the separation sweeping assembly C4 through a pipeline, the underflow outlet of the separation sweeping assembly C4 is connected with the XCF flotation machine in the separation sweeping assembly C5 through a pipeline, and the underflow outlet of the separation sweeping assembly C5 is connected with the XCF flotation machine in the separation sweeping assembly C6 through a pipeline; the foam tank of the separation sweeping assembly C4 is connected with the XCF flotation machine in the zinc-sulfur separation roughing assembly C1 through a pipeline, and the foam tank of the separation sweeping assembly C5 is connected with the XCF flotation machine in the separation sweeping assembly C6 through a pipeline. The trough is connected with the XCF flotation machine in the separation and sweeping component C4 through a pipeline, and the foam trough of the separation and sweeping component C6 is connected with the XCF flotation machine in the separation and sweeping component C5 through a pipeline; the foam trough of the zinc-sulfur separation roughing component C1 is connected with the XCF flotation machine in the separation and refinement component C2 through a pipeline, and the foam trough of the separation and refinement component C2 is connected with the XCF flotation machine in the separation and refinement component C3 through a pipeline; the underflow outlet of the separation and refinement component C2 is connected with the XCF flotation machine in the zinc-sulfur separation roughing component C1 through a pipeline, and the underflow outlet of the separation and refinement component C3 is connected with the XCF flotation machine in the separation and refinement component C2 through a pipeline.

[0063] The mixing barrel 1 and the mixing barrel 2 are both mixing barrels with an inner diameter of 2400 mm and a height of 2400 mm; the mixing barrel 3 and the mixing barrel 4 are both mixing barrels with an inner diameter of 2200 mm and a height of 2200 mm.

[0064] The XCF flotation machine is an XCF-8 slurry suction type aerated mechanical stirring flotation machine, and the KYF flotation machine is a KYF-8 aerated mechanical stirring flotation machine.

[0065] The working process of this embodiment is:

[0066] like Figure 2As shown, the feed slurry enters the Φ2400mm×2400mm mixing barrel 1 under the action of slurry suction, copper sulfate and pine oil are added to the mixing barrel 1, and the product of the mixing barrel 1 flows by gravity into the Φ2400mm×2400mm mixing barrel 2, to which butyl xanthate is added. Copper sulfate and butyl xanthate are mainly used for activating and capturing zinc-sulfur mixed concentrate, respectively. After stirring, the product enters the first slot XCF-8 slurry suction type aerated mechanical agitation flotation machine in the zinc-sulfur mixed separation roughing assembly B1 through the slurry suction effect of the XCF flotation machine. In the zinc-sulfur mixed separation roughing assembly B1, the three slot flotation machines work simultaneously. The underflow product of the three slot flotation machine of the zinc-sulfur mixed separation roughing assembly B1 flows into the XCF-8 slurry suction type aerated mechanical agitation flotation machine in the mixing and sweeping assembly B2 through the slurry suction effect of the XCF flotation machine. The foam product of the three slot flotation machine of the zinc-sulfur mixed separation roughing assembly B1 flows into the foam tank and then flows into the XCF-8 slurry suction type aerated mechanical agitation flotation machine in the mixing and fine assembly B5 through the pipeline and through the slurry suction effect of the XCF flotation machine. Butyl xanthate is added to the first mixing and sweeping component B2, and the first mixing and sweeping component B2 adopts a double-slot flotation machine. The bottom flow product of the double-slot flotation machine of the first mixing and sweeping component B2 enters the XCF-8 slurry-absorbing aerated mechanical agitation flotation machine in the second mixing and sweeping component B3 through the slurry absorption effect of the XCF flotation machine. Butyl xanthate is added to the second mixing and sweeping component B3, and the second mixing and sweeping component B3 adopts a double-slot flotation machine. The bottom flow product of the double-slot flotation machine of the second mixing and sweeping component B3 enters the XCF-8 slurry-absorbing aerated mechanical agitation flotation machine in the third mixing and sweeping component B4 through the slurry absorption effect of the XCF flotation machine. Butyl xanthate is added to the third mixing and sweeping component B4, and its bottom flow product is the final tailings, which enter the tailings pump pool, and the tailings pump pool transports the tailings out through the pump. The foam product of the first mixing and sweeping component B2 returns to the second slot XCF-8 slurry-absorbing aerated mechanical agitation flotation machine of the zinc-sulfur mixed roughing component B1 after passing through the foam tank. The foam product of the second mixing and sweeping component B3 returns to the XCF-8 slurry suction type aerated mechanical agitation flotation machine in the first mixing and sweeping component B2 after passing through the foam tank. The foam product of the third mixing and sweeping component B4 returns to the XCF-8 slurry suction type aerated mechanical agitation flotation machine in the second mixing and sweeping component B3 after passing through the foam tank. The foam product of the first mixing and fine component B5 enters the Φ2200mm×2200mm mixing barrel three, and the underflow product of the first mixing and fine component B5 returns to the first tank XCF-8 slurry suction type aerated mechanical agitation flotation machine in the zinc-sulfur mixed roughing component B1. Lime is added to the mixing barrel three, and after stirring, it enters the Φ2200mm×2200mm mixing barrel four. The product of the mixing barrel four flows into the XCF-8 slurry suction type aerated mechanical agitation flotation machine in the zinc-sulfur separation roughing component C1 through the slurry suction action of the XCF flotation machine. The zinc-sulfur separation roughing component C1 also adopts a double-tank flotation machine. Its underflow product flows into the XCF-8 slurry-absorbing aerated mechanical agitation flotation machine in the separation sweeping component C4 through the slurry absorption action of the XCF flotation machine, and its foam product flows into the XCF-8 slurry-absorbing aerated mechanical agitation flotation machine in the separation fine component C2 through the foam tank and the slurry absorption action of the XCF flotation machine.Butyl xanthate is added to the separation sweep component C4, and a double-tank flotation machine is also used. Its bottom flow product enters the XCF-8 slurry-absorbing aerated mechanical agitation flotation machine in the separation sweep component C5 through the slurry absorption effect of the XCF flotation machine, and its foam product returns to the XCF-8 slurry-absorbing aerated mechanical agitation flotation machine in the zinc-sulfur separation roughing component C1 through the slurry absorption effect of the XCF flotation machine. Butyl xanthate is added to the separation sweep component C5, and a double-tank flotation machine is also used. Its bottom flow product flows into the XCF-8 slurry-absorbing aerated mechanical agitation flotation machine in the separation sweep component C6 through the slurry absorption effect of the XCF flotation machine, and its foam product returns to the XCF-8 slurry-absorbing aerated mechanical agitation flotation machine in the separation sweep component C4 through the foam tank and the slurry absorption effect of the XCF flotation machine. Butyl xanthate is added to the separation sweeping component C6, and a double-trough flotation machine is also used. Its foam product is returned through the foam tank and the slurry suction effect of the XCF flotation machine to flow into the XCF-8 slurry suction type aerated mechanical stirring flotation machine in the separation sweeping component C5. Its bottom flow product is sulfur concentrate. Lime is added to the separation refinement component C2, and a double-trough flotation machine is also used. Its foam product flows through the foam tank into the separation refinement component C3, and its bottom flow product returns to the zinc-sulfur separation roughing component C1 through the slurry suction effect of the XCF flotation machine. The foam product of the separation refinement component C3 is zinc concentrate, and the bottom flow product of the separation refinement component C3 returns to the separation refinement component C2.

[0067] This embodiment uses a combination of XCF flotation machine and KYF flotation machine to carry out zinc-sulfur mixed flotation rough and fine scavenging operations, and then uses a combination of XCF flotation machine and KYF flotation machine to carry out zinc-sulfur separation rough and fine scavenging operations, thereby inventing a new zinc-sulfur green low-carbon flotation process, realizing early tailing, no sulfuric acid, low lime, green low-carbon and efficient zinc-sulfur separation. Zinc concentrate, sulfur concentrate and tailings are quickly produced through a simple and efficient process, realizing a new zinc-sulfur green low-carbon flotation process.

[0068] In the zinc-sulfur mixed flotation rough and fine scavenging step, copper sulfate and butyl xanthate are mainly used to activate and capture the zinc-sulfur mixed concentrate. In the zinc-sulfur separation rough and fine scavenging step, lime is mainly used to inhibit sulfur minerals, and butyl xanthate is mainly used to capture zinc minerals.

[0069] The industrial production test data of the present invention when applied and implemented are as follows:

[0070] Table 1. Industrial production test data of the present invention when applied and implemented:

[0071] name Yield / % Zinc grade / % Sulfur grade / % Zinc recovery rate / % Sulfur recovery rate / % Mixed roughing 118.83 4.65 15.92 103.34 115.94 Zinc Concentrate 10.34 51.06 30.33 98.72 19.69 Sulfur concentrate 26.33 0.15 47.12 0.71 77.93 Tailings 63.33 0.05 0.60 0.57 2.38

[0072] It can be clearly seen from Table 1 that the application and implementation of the present invention achieves better zinc and sulfur concentrate grades and better zinc concentrate recovery rates and sulfur concentrate recovery rates. Here, the zinc concentrate and sulfur concentrate recovery rates are both the recovery rates of this operation.

[0073] Table 2. Data of the industrial production test for the current month when the present invention is applied and implemented:

[0074]

[0075]

[0076] Table 3. Annual data of industrial production test when the present invention is applied and implemented:

[0077] Zinc grade / % Sulfur grade / % Zinc recovery rate / % Sulfur recovery rate / % Ore 3.46 17.09 100 100 Zinc Concentrate 47.24 30.78 91.66 12.09 Sulfur concentrate 0.15 45.29 1.23 73.51 Tailings 0.12 2.91 2.07 10.60

[0078] Table 4. Comparison of reagent consumption and production energy consumption of zinc-sulfur green low-carbon flotation process and original priority flotation process:

[0079]

[0080] From the monthly data of industrial production test when the present invention is applied and implemented in Table 2 and the annual data of industrial production test when the present invention is applied and implemented in Table 3, it can be seen that the monthly production index and annual production index are very stable after the implementation of the present invention, and the core technical indicators of concentrate grade and recovery rate have achieved very good results. As can be seen from Table 4, the present invention effectively realizes the green low-carbon flotation of zinc and sulfur, and realizes the early tailing, sulfuric acid-free, low-lime and efficient selection of zinc and sulfur. While ensuring the quality of zinc and sulfur concentrate products, there are certain improvements in production reagent consumption and energy consumption, among which the unit consumption of butyl xanthate is reduced by 0.32kg / t, the unit consumption of lime is reduced by 3.79kg / t, the sulfuric acid is reduced by 3.98kg / t, and the power consumption is reduced by 1.31kWh / t. Calculated based on an annual processing capacity of 350,000 tons, the annual cost of mineral processing reagents is reduced by about 2.541 million yuan, the energy consumption cost is about 360,500 yuan, and the comprehensive cost is about 2.9015 million yuan. This technical indicator is at the leading level in the same industry nationwide.

[0081] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A green low-carbon flotation method for zinc-sulfur, characterized in that: It includes zinc-sulfur mixed flotation coarse and fine scavenging steps and zinc-sulfur separation coarse and fine scavenging steps; The zinc-sulfur mixed flotation rough and fine sweeping steps include: The slurry is fully stirred after adding activator, frother and collector in sequence. After fully reacting with the reagent, the slurry flows by gravity into the zinc-sulfur mixed selection roughing operation. The foam after the zinc-sulfur mixed selection roughing operation enters the selection operation through the slurry suction effect of the XCF flotation machine. The foam after the selection operation enters the zinc-sulfur separation rough and fine scavenging step through the slurry suction effect of the stirring barrel. The bottom flow after the selection operation returns to the zinc-sulfur mixed selection roughing operation; the bottom flow after the zinc-sulfur mixed selection roughing operation enters the scavenging operation through the slurry suction effect of the XCF flotation machine. The bottom flow after three scavenging operations is tailings, and the foam after each scavenging operation is returned to the previous level. The zinc-sulfur separation rough and fine sweeping steps include: The foam after the selection operation in the zinc-sulfur mixed flotation rough and fine scavenging step enters the mixing barrel through the slurry absorption effect. After adding lime for sufficient stirring, the slurry enters the zinc-sulfur separation rough selection operation through the slurry absorption effect of the XCF flotation machine. The foam after the zinc-sulfur separation rough selection operation enters the selection operation through the slurry absorption effect of the XCF flotation machine. After two selection operations, the foam is zinc concentrate, and the underflow after each selection operation is returned to the previous level; the underflow after the zinc-sulfur separation rough selection operation enters the scavenging operation through the slurry absorption effect of the XCF flotation machine. After three scavenging operations, the underflow is sulfur concentrate, and the foam after each scavenging operation is returned to the previous level.

2. The zinc-sulfur green low-carbon flotation method according to claim 1, characterized in that: In the zinc-sulfur mixed flotation coarse and fine scavenging step, a collector is added for scavenging in each of the three scavenging operations; In the coarse and fine scavenging steps of zinc-sulfur separation, a collector is added for scavenging in each of the three scavenging operations; lime is added for concentrating in the first concentrating operation.

3. The zinc-sulfur green low-carbon flotation method according to claims 1 and 2, characterized in that: The collector is butyl xanthate, and the activator is copper sulfate.

4. The zinc-sulfur green low-carbon flotation method according to claim 1, characterized in that: The zinc-sulfur mixed flotation coarse and fine sweeping steps specifically include: a1. The ore pulp enters the mixing barrel 1 under the action of slurry suction, copper sulfate and pine oil are added to the mixing barrel 1, and the ore pulp after fully reacting with the reagent flows to the mixing barrel 2 by gravity, butyl xanthate is added to the mixing barrel 2, and the ore pulp after fully reacting with the reagent enters the first tank XCF flotation machine in the zinc-sulfur mixed roughing component (B1) under the action of slurry suction; a2. The zinc-sulfur mixed roughing component (B1) adopts a three-tank flotation machine, including a first tank XCF flotation machine, a second tank XCF flotation machine and a third tank KYF flotation machine connected in sequence; the zinc-sulfur mixed roughing operation is carried out in the zinc-sulfur mixed roughing component (B1), and the foam after the zinc-sulfur mixed roughing operation flows into the XCF flotation machine of the mixed fine component (B5) through the slurry suction effect of the XCF flotation machine; the bottom flow after the zinc-sulfur mixed roughing operation flows into the XCF flotation machine of the mixed sweep component (B2) through the slurry suction effect of the XCF flotation machine; a3. Add butyl xanthate into the first mixing and sweeping component (B2), and the first mixing and sweeping component (B2) performs the first scavenging operation. The foam after the scavenging operation returns to the second tank XCF flotation machine in the zinc-sulfur mixed roughing component (B1). The bottom flow after the scavenging operation flows into the XCF flotation machine in the second mixing and sweeping component (B3) through the slurry suction effect of the XCF flotation machine; a4. Add butyl xanthate into the second mixing and sweeping component (B3), and the second mixing and sweeping component (B3) performs a second sweeping operation. The foam after the sweeping operation returns to the XCF flotation machine in the first mixing and sweeping component (B2); the bottom flow after the sweeping operation flows into the XCF flotation machine in the third mixing and sweeping component (B4) through the slurry suction effect of the XCF flotation machine; a5. Add butyl xanthate to the three-mix sweep assembly (B4), and the three-mix sweep assembly (B4) performs the third sweep operation. The foam after the sweep operation returns to the XCF flotation machine in the two-mix sweep assembly (B3); the bottom flow after the sweep operation is tailings, which flows into the tailings pump pool by gravity; a6. The first concentrating operation is carried out in the first mixing and concentrating component (B5). The foam after the concentrating operation flows into the mixing barrel three in the zinc-sulfur separation roughing and concentrating step; the bottom flow after the concentrating operation returns to the first tank XCF flotation machine in the zinc-sulfur mixed roughing and concentrating component (B1) through the slurry suction effect of the XCF flotation machine.

5. The zinc-sulfur green low-carbon flotation method according to claim 4, characterized in that: The zinc-sulfur separation coarse and fine scavenging step specifically includes: b1. Add lime into the mixing barrel 3, and the product after mixing flows into the mixing barrel 4 by gravity. After the slurry in the mixing barrel 4 and the reagent fully react, it enters the XCF flotation machine in the zinc-sulfur separation roughing component (C1) through the slurry suction action of the XCF flotation machine; b2. The zinc-sulfur separation roughing component (C1) performs zinc-sulfur separation roughing operation. The foam after the separation roughing operation flows into the XCF flotation machine of the separation refinement component (C2) through the slurry suction effect of the XCF flotation machine; the bottom flow after the separation roughing operation flows into the XCF flotation machine of the separation sweeping component (C4) through the slurry suction effect of the XCF flotation machine; b3, adding butyl xanthate into the separation scavenging component (C4), the separation scavenging component (C4) performs the first scavenging operation, and the foam after the scavenging operation is returned to the XCF flotation machine of the zinc-sulfur separation roughing component (C1) through the slurry suction effect of the XCF flotation machine; the bottom flow after the scavenging operation is flowed into the XCF flotation machine of the separation scavenging component (C5) through the slurry suction effect of the XCF flotation machine; b4, adding butyl xanthate into the separation scavenging component (C5), the separation scavenging component (C5) performs a second scavenging operation, and the foam after the scavenging operation returns to the XCF flotation machine of the separation scavenging component (C4) through the slurry suction effect of the XCF flotation machine; the bottom flow after the scavenging operation flows into the XCF flotation machine of the separation scavenging component (C6) through the slurry suction effect of the XCF flotation machine; b5. Add butyl xanthate to the separation and scavenging component (C6), and the separation and scavenging component (C6) performs a third scavenging operation. The foam after the scavenging operation is returned to the XCF flotation machine of the separation and scavenging component (C5) through the slurry suction effect of the XCF flotation machine. The bottom flow after the scavenging operation is sulfur concentrate; b6. Add lime into the separation and refinement component (C2), and the separation and refinement component (C2) performs the first concentration operation. The foam after the concentration operation flows into the XCF flotation machine of the separation and refinement component (C3) through the slurry suction effect of the XCF flotation machine; the bottom flow after the concentration operation returns to the XCF flotation machine of the zinc-sulfur separation roughing component (C1) through the slurry suction effect of the XCF flotation machine; b7. The separation and refinement component (C3) performs a second concentration operation. The foam after the concentration operation is zinc concentrate. The bottom flow after the concentration operation is returned to the XCF flotation machine through the slurry suction effect of the XCF flotation machine and flows into the separation and refinement component (C2).

6. The zinc-sulfur green low-carbon flotation method according to claim 5, characterized in that: The mixing and sweeping component (B2), the mixing and sweeping component (B3), the mixing and sweeping component (B4) and the mixing and finishing component (B5) all adopt double-tank flotation machines, including a tank XCF flotation machine and a tank KYF flotation machine which are interconnected; The zinc-sulfur separation roughing component (C1), separation fine component 1 (C2), separation scavenging component 1 (C4), separation scavenging component 2 (C5) and separation scavenging component 3 (C6) all adopt double-tank flotation machines, including a tank XCF flotation machine and a tank KYF flotation machine that are interconnected; the separation fine component 2 (C3) adopts a single-tank flotation machine, including a tank XCF flotation machine.

7. The zinc-sulfur green low-carbon flotation method according to claim 4, characterized in that: The stirring barrel 1 is connected to the stirring barrel 2 through a pipeline, the stirring barrel 2 is connected to the first tank XCF flotation machine in the zinc-sulfur mixed roughing assembly (B1) through a pipeline, the bottom flow outlet of the zinc-sulfur mixed roughing assembly (B1) is connected to the XCF flotation machine in the mixing and sweeping assembly (B2) through a pipeline, the foam tank of the zinc-sulfur mixed roughing assembly (B1) is connected to the XCF flotation machine in the mixing and fine assembly (B5) through a pipeline; the bottom flow outlet of the mixing and fine assembly (B5) is connected to the first tank XCF flotation machine in the zinc-sulfur mixed roughing assembly (B1) through a pipeline; the foam tank in the mixing and fine assembly (B5) is connected to the stirring barrel 2 through a pipeline. The three barrels are connected; the underflow outlet in the first mixing and sweeping component (B2) is connected to the XCF flotation machine in the second mixing and sweeping component (B3) through a pipeline, and the underflow outlet in the second mixing and sweeping component (B3) is connected to the XCF flotation machine in the third mixing and sweeping component (B4) through a pipeline; the foam tank of the first mixing and sweeping component (B2) is connected to the second tank XCF flotation machine in the zinc-sulfur mixed roughing component (B1) through a pipeline, and the foam tank of the second mixing and sweeping component (B3) is connected to the XCF flotation machine in the first mixing and sweeping component (B2) through a pipeline; the foam tank of the third mixing and sweeping component (B4) is connected to the XCF flotation machine in the second mixing and sweeping component (B3) through a pipeline.

8. The zinc-sulfur green low-carbon flotation method according to claim 5, characterized in that: The stirring barrel 3 is connected to the stirring barrel 4 through a pipeline, the stirring barrel 4 is connected to the XCF flotation machine in the zinc-sulfur separation roughing assembly (C1) through a pipeline, the underflow outlet of the zinc-sulfur separation roughing assembly (C1) is connected to the XCF flotation machine in the separation sweeping assembly (C4) through a pipeline, the underflow outlet of the separation sweeping assembly (C4) is connected to the XCF flotation machine in the separation sweeping assembly (C5) through a pipeline, and the underflow outlet of the separation sweeping assembly (C5) is connected to the XCF flotation machine in the separation sweeping assembly (C6) through a pipeline; the foam tank of the separation sweeping assembly (C4) is connected to the XCF flotation machine in the zinc-sulfur separation roughing assembly (C1) through a pipeline, and the foam tank of the separation sweeping assembly (C5) is connected to the XCF flotation machine in the separation sweeping assembly (C6) through a pipeline. The foam tank of the separation and scavenging component (C6) is connected to the XCF flotation machine in the separation and scavenging component (C5) through a pipeline; the foam tank of the zinc-sulfur separation roughing component (C1) is connected to the XCF flotation machine in the separation and scavenging component (C2) through a pipeline, and the foam tank of the separation and scavenging component (C2) is connected to the XCF flotation machine in the separation and scavenging component (C3) through a pipeline; the underflow outlet of the separation and scavenging component (C2) is connected to the XCF flotation machine in the zinc-sulfur separation roughing component (C1) through a pipeline, and the underflow outlet of the separation and scavenging component (C3) is connected to the XCF flotation machine in the separation and scavenging component (C2) through a pipeline.

9. The zinc-sulfur green low-carbon flotation method according to claim 5, characterized in that: The mixing barrel 1 and the mixing barrel 2 are both mixing barrels with an inner diameter of 2400 mm and a height of 2400 mm; the mixing barrel 3 and the mixing barrel 4 are both mixing barrels with an inner diameter of 2200 mm and a height of 2200 mm.

10. The green low-carbon flotation method of zinc-sulfur according to claim 5, characterized in that: The XCF flotation machine is an XCF-8 slurry suction type aerated mechanical stirring flotation machine, and the KYF flotation machine is a KYF-8 aerated mechanical stirring flotation machine.

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