CN116213099A - Mineral separation method for recycling micro-fine cassiterite from ore slurry - Google Patents
Mineral separation method for recycling micro-fine cassiterite from ore slurry Download PDFInfo
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- 239000002002 slurry Substances 0.000 title claims description 10
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 title abstract description 86
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract description 19
- 239000011707 mineral Substances 0.000 title abstract description 19
- 238000000926 separation method Methods 0.000 title description 7
- 238000004064 recycling Methods 0.000 title description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000005188 flotation Methods 0.000 claims abstract description 63
- 239000012141 concentrate Substances 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 44
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 26
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 15
- 230000023556 desulfurization Effects 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 13
- 239000010419 fine particle Substances 0.000 claims abstract description 7
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 9
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 9
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 9
- GGLZPLKKBSSKCX-YFKPBYRVSA-N L-ethionine Chemical compound CCSCC[C@H](N)C(O)=O GGLZPLKKBSSKCX-YFKPBYRVSA-N 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 2
- 235000011613 Pinus brutia Nutrition 0.000 claims description 2
- 241000018646 Pinus brutia Species 0.000 claims description 2
- 239000010665 pine oil Substances 0.000 claims description 2
- 239000010802 sludge Substances 0.000 claims 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 7
- DSCFFEYYQKSRSV-UHFFFAOYSA-N 1L-O1-methyl-muco-inositol Natural products COC1C(O)C(O)C(O)C(O)C1O DSCFFEYYQKSRSV-UHFFFAOYSA-N 0.000 description 5
- VJXUJFAZXQOXMJ-UHFFFAOYSA-N D-1-O-Methyl-muco-inositol Natural products CC12C(OC)(C)OC(C)(C)C2CC(=O)C(C23OC2C(=O)O2)(C)C1CCC3(C)C2C=1C=COC=1 VJXUJFAZXQOXMJ-UHFFFAOYSA-N 0.000 description 5
- DSCFFEYYQKSRSV-KLJZZCKASA-N D-pinitol Chemical compound CO[C@@H]1[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)[C@H]1O DSCFFEYYQKSRSV-KLJZZCKASA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000008396 flotation agent Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 229910001608 iron mineral Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010835 comparative analysis Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- OQOGEOLRYAOSKO-UHFFFAOYSA-N 1,1-dichloro-1-nitroethane Chemical compound CC(Cl)(Cl)[N+]([O-])=O OQOGEOLRYAOSKO-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- AEOCXXJPGCBFJA-UHFFFAOYSA-N ethionamide Chemical compound CCC1=CC(C(N)=S)=CC=N1 AEOCXXJPGCBFJA-UHFFFAOYSA-N 0.000 description 1
- 229960002001 ethionamide Drugs 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention relates to a method for recovering micro-fine tin from mineral mud, which comprises the following steps: (1) Carrying out primary desulfurization by floatation, and carrying out desulfurization floatation on the fine particle ore slime ore by adopting a floatation machine to obtain floatation sulfide ore concentrate and floatation sulfide ore tailings; (2) Desliming by a cyclone, and feeding the flotation sulfide ore tailings obtained in the step (1) into the cyclone to obtain cyclone sand setting and overflow; (3) The disc is thrown to be wasted, the cyclone sand setting obtained in the step (2) is fed into the disc, and low-grade tin concentrate and tailings are obtained, and the tailings are discarded; (4) And (3) collecting tin by a shaking table, and feeding the low-grade tin concentrate obtained in the step (3) into the shaking table to obtain tin concentrate, middling and tailing, wherein the tailing is discarded. The recovery method has the characteristics of low cost of the flotation reagent, high enrichment ratio and high cassiterite recovery rate.
Description
Technical Field
The invention belongs to the technical field of micro-fine low-grade tin ore dressing, and particularly relates to an ore dressing method for recovering micro-fine cassiterite from mineral mud.
Background
Because of special physical properties such as brittleness, the cassiterite is extremely easy to be slimed or excessively crushed in the processes of crushing and grinding, and a large amount of secondary mineral mud is generated. In particular, finely divided cassiterite is embedded, which is densely intergrown with sulphide ores or iron minerals, or is encapsulated by gangue minerals. If the dissociation of the effective monomers of the cassiterite mineral is achieved, the ore needs to be finely ground, so that secondary slime is inevitably generated, and therefore, the fine-grained cassiterite has the characteristic of difficult selection. About 80% of the tin lost each year is lost to the tailings in the form of fine mud.
The tin ore dressing method is mainly two methods of gravity dressing and floatation. Because of the large specific gravity of cassiterite, which is a large difference in density from gangue minerals, reselection has been the primary method of cassiterite recovery. Reselection is commonly adopted because of the advantages of low treatment cost, no environmental pollution, high enrichment ratio, capability of obtaining tin concentrate with higher grade, and the like. The most widely used of the gravity separation devices is a shaking table, which is often used in combination with gravity separation devices such as jigs and spiral chutes to separate cassiterite. Flotation is mainly directed to the recovery of fine and fine cassiterite.
For fine and micro-fine cassiterite beneficiation processes, single gravity or flotation has been the key technology for many times. Production practice shows that the recovery rate of the-0.037+0.010mm size fraction selected by the micro-fine cassiterite single reselection table is low, about 13%, and the cassiterite with the-0.010 mm size fraction can not be recovered almost by reselection. The single flotation has the problems of large dosage of the medicament, high cost, certain pollution to the environment and poor economic benefit. In recent publications, new search is carried out for fine-grain and micro-grain cassiterite beneficiation process technology, and the following abstracts are extracted through searching:
chinese patent publication No. CN101884951 discloses a method for the combined beneficiation of fine and fine cassiterite: carrying out desulfurization flotation on fine particles and fine-particle-grade cassiterite after precipitation and concentration to realize separation of sulfide ores and oxidized ores, then carrying out flotation cassiterite operation to obtain cassiterite rough concentrate, and then carrying out magnetic separation, desliming and dehydration and gravity separation shaking table operation to finally obtain the tin concentrate. The new method is that the cassiterite is directly subjected to cassiterite flotation after cassiterite desulfurization flotation, and the cassiterite concentrate after flotation is subjected to magnetic separation and cyclone desliming operation. This means that there is a lot of slime and part of iron minerals in the feed. The mineral mud and the iron mineral are main interference factors in the cassiterite flotation, so that the stability of the flotation effect is affected, the consumption of the cassiterite flotation agent is very large, and the production cost is also high. In addition, the cassiterite rough concentrate is subjected to cyclone desliming, and the desliming stability is directly influenced by the cassiterite flotation effect, so that the stability is difficult to ensure.
Wujin (Fine mud cassiterite flotation Process research, university of Shanghai second Industrial university, 2000 (2), 66-72) on the fine mud cassiterite of car and river concentrating mills, which is a classified overflow of twice gravity tailings. Because the mud content in flotation ore feeding is larger, the two process flows of desliming, tin flotation and desulfurization, desliming and tin flotation are compared aiming at the fine mud cassiterite, and the latter flow is more economic and reasonable and the concentrate quality is higher. However, the process also adopts a single flotation process for the flotation of cassiterite, and has larger dependence on flotation agents.
He Mingfei et al (research on fine-grained cassiterite flotation, mineral engineering, 2008 (4), 29-31) propose a flotation process to recover fine-grained cassiterite. BY-5 and sodium carbonate are used as gangue inhibitors, BY-9 is used as a collector, P-86 is used as an auxiliary collector, a tin rough concentrate with a fine grade of 8.56% and a recovery rate of 61.61% can be obtained through one-time flotation, the tin rough concentrate is carefully selected, the tin concentrate grade reaches 53.58%, the operation recovery rate is 81.35%, and the total tin recovery rate is 50.12%. The method is a single flotation method, and can obtain a concentrate product with higher grade, but the method also has the problems of high consumption of flotation reagents and high production cost.
In summary, the research direction is mainly focused on a single flotation technique because of the low efficiency of the reselection to the fine-particle cassiterite. Although some of the processes adopt pretreatment before cassiterite separation or combined process flows, the problems of high flotation cost or poor rationality are not solved.
Disclosure of Invention
Aiming at the technical problems of high cost, poor benefit, more equipment of a re-selection method, long flow, poor recovery effect and the like of a flotation method in the prior art, the invention provides a beneficiation method of micro-fine cassiterite with low cost, high enrichment ratio and high recovery rate, and aims to recover micro-fine cassiterite with the diameter of-0.037 mm from ore slime, and the specific scheme is as follows:
a method for recovering micro-fine tin from a slurry comprising the steps of:
(1) Flotation primary desulfurization
Feeding the fine-particle-grade ore slurry into a flotation machine, and sequentially adding copper sulfate, butyl xanthate, ethionine and pine alcohol oil for desulfurization and flotation to obtain flotation sulfide ore concentrate and flotation sulfide ore tailings;
(2) Desliming of cyclone
Feeding the flotation sulfide ore tailings obtained in the step (1) into a cyclone, and removing part of fine particle mineral mud to obtain cyclone sand setting and cyclone overflow;
(3) Disc waste disposal
Feeding the cyclone sand setting obtained in the step (2) into a disc to obtain low-grade tin concentrate and tailings, wherein the tailings are discarded;
(4) Tin collection of shaking table
Feeding the low-grade tin concentrate obtained in the step (3) into a shaking table to obtain tin concentrate, middling and tailing, wherein the tailing is discarded.
Further, the grade of tin in the fine particle slime ore in the step (1) is 0.25 percent, and the granularity is-0.037 mm and is more than or equal to 90 percent.
Further, in the step (1), the copper sulfate is 400-500g/t, the butyl xanthate is 350-400g/t, the ethionine is 500-550g/t, and the pinitol oil is 140-180g/t.
Further, in the disc operation in the step (3), the concentration of ore pulp is 15%, the ore feeding amount is 9kg/h, the vibration frequency is 32Hz, and the rotating speed is 26 revolutions per minute.
Further, the shaking table in the step (4) is a fine mud shaking table, the stroke of the shaking table is 5-7mm, and the stroke frequency is 480-520 r/min.
Further, the tin concentrate in the step (4) contains 51.18% -52.58% of tin, the recovery rate of shaking table operation is 25.47% -27.47%, the tin content of middling is 4.81% -5.12%, the recovery rate of shaking table operation is 49.75% -51.30%, and middling is used as low-grade tin concentrate.
THE ADVANTAGES OF THE PRESENT INVENTION
According to the beneficiation method for recycling the micro-fine cassiterite from the mineral mud, copper sulfate is added into the micro-fine particle-grade mineral mud to serve as an activating agent, mineral butyl xanthate and ethide nitrogen are added to serve as collecting agents, pine oil is added to serve as a foaming agent, one-stage flotation operation is performed, a flotation machine is adopted for stirring flotation to remove sulfide ores, one-stage flotation tailings are fed into a cyclone operation, part of micro-fine particle mineral mud is removed in the cyclone operation, so that interference of the mineral mud on the flotation of the sulfide ores is reduced, and a good environment is created for the flotation of the sulfide ores. And (3) sand setting the cyclone in the cyclone into a disc operation, and feeding low-grade tin concentrate in the disc operation into a shaking table operation to obtain tin concentrate, middling and tailings. The method adopts a novel process of floating-heavy (disc) -heavy (shaking table) to treat the fine-grained ore slime, has the advantages of high enrichment ratio, high fine ore quality and high cassiterite recovery rate, saves 12.60 yuan/ton of ore concentrate cost, improves the quality of tin concentrate from 15.86 percent of the existing process to 51.18 percent, improves the tin operation recovery rate from 3.24 percent of the existing process to 27.38 percent, has the characteristics of low cost of flotation agent, high enrichment ratio and high cassiterite recovery rate, can realize low cost and low pollution, obtains high fine-grained tin index, and has important significance for treating the fine-grained cassiterite.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
It should be noted that the following description is not intended to limit the scope of the invention.
Example 1
A method for recovering micro-fine tin from a slurry comprising the steps of:
(1) Flotation primary desulfurization
Feeding fine-particle-grade mineral mud with the particle size of-0.037 mm accounting for 92.04% and tin content of 0.25% in a concentrating mill into a flotation machine, sequentially adding 420g/t copper sulfate, 360g/t butyl xanthate, 500g/t ethionine and 160g/t pinitol oil for desulfurization flotation, and removing sulfide ores to obtain flotation sulfide ore concentrate and flotation sulfide ore tailings;
(2) Desliming of cyclone
Feeding the flotation sulfide ore tailings obtained in the step (1) into a cyclone, and removing ore slime of-5 um to obtain cyclone sand setting and cyclone overflow;
(3) Disc waste disposal
Feeding the cyclone sand setting obtained in the step (2) into a disc, wherein the ore pulp is 15% in concentration, the ore feeding amount is 9kg/h, the flushing water is 28ml/s, the vibration frequency is 32, the rotating speed is 26 revolutions per minute, and low-grade tin concentrate and tailings are obtained, and the tailings are lost;
(4) Tin collection of shaking table
Feeding the low-grade tin concentrate obtained in the step (3) into a micro-fine mud shaking table, wherein the stroke is 7mm, the stroke frequency is 480 r/min, and tin concentrate, middling and tailing are obtained, the tailing is lost, the tin concentrate contains 51.18 percent of tin, and the recovery rate of shaking table operation is 27.38 percent; the middling contains 5.12% of tin, the middling is also called low-grade tin concentrate, and the recovery rate of shaking table operation is 50.75%.
Example 2
A method for recovering micro-fine tin from a slurry comprising the steps of:
(1) Flotation primary desulfurization
Feeding fine-particle-size mineral mud with the particle size of-0.037 mm in a concentrating mill, wherein the particle-size yield is 91.78%, and the tin content is 0.25% into a flotation machine, sequentially adding 450g/t copper sulfate, 390g/t butyl xanthate, 510g/t ethionine and 168g/t pinitol oil for desulfurization flotation, and removing sulfide ores to obtain flotation sulfide ore concentrate and flotation sulfide ore tailings;
(2) Desliming of cyclone
Feeding the flotation sulfide ore tailings obtained in the step (1) into a cyclone, and removing ore slime of-5 um to obtain cyclone sand setting and cyclone overflow;
(3) Disc waste disposal
Feeding the cyclone sand setting obtained in the step (2) into a disc, wherein ore pulp is 15% in concentration, ore feeding amount is 9kg/h, flushing water is 28ml/s, vibration frequency is 32, rotating speed is 24 revolutions per minute, and low-grade tin concentrate and tailings are obtained, and tailings are lost;
(4) Tin collection of shaking table
Feeding the low-grade tin concentrate obtained in the step (3) into a micro-fine mud shaking table, wherein the stroke is 7mm, the stroke frequency is 480 r/min, and tin concentrate, middling and tailing are obtained, the tailing is lost, the tin content of the cassiterite concentrate is 52.08%, and the shaking table operation recovery rate is 25.47%; the tin content of middling is 5.02%, and the recovery rate of shaking table operation is 49.75%.
Example 3
A method for recovering micro-fine tin from a slurry comprising the steps of:
(1) Flotation primary desulfurization
Feeding fine-particle-grade mineral mud with the particle size of-0.037 mm accounting for 92.15% and tin content of 0.25% in a concentrating mill into a flotation machine, sequentially adding 436g/t copper sulfate, 360g/t butyl xanthate, 517g/t ethionine and 160g/t pinitol oil for desulfurization flotation, and removing sulfide ores to obtain flotation sulfide ore concentrate and flotation sulfide ore tailings;
(2) Desliming of cyclone
Feeding the flotation sulfide ore tailings obtained in the step (1) into a cyclone, and removing ore slime of-5 um to obtain cyclone sand setting and cyclone overflow;
(3) Disc waste disposal
Feeding the cyclone sand setting obtained in the step (2) into a disc, wherein the ore pulp is 15% in concentration, the ore feeding amount is 9kg/h, the flushing water is 42ml/s, the vibration frequency is 32, the rotating speed is 26 revolutions per minute, and low-grade tin concentrate and tailings are obtained, and the tailings are lost;
(4) Tin collection of shaking table
Feeding the low-grade tin concentrate obtained in the step (3) into a micro-fine mud shaking table, wherein the stroke is 7mm, the stroke frequency is 480 r/min, and tin concentrate, middling and tailing are obtained, the tailing is lost, the tin concentrate contains 52.58 percent of tin, and the recovery rate of shaking table operation is 27.47 percent; middling 4.81%, recovery rate of shaking table operation 51.30%.
The cost comparison analysis and tin index comparison analysis conditions of ethionamide, pinitol oil, copper sulfate and butyl xanthate of the invention and flotation agents of the prior art are listed below, and are shown in tables 1 and 2.
TABLE 1 results of cost comparison of the inventive and prior art medicaments
TABLE 2 comparison of tin concentrate of inventive example 1 with existing Process indicators (%)
The comparative analysis conditions of the tin index of the invention and the tin index of the prior art are listed below, and the analysis conditions of the granularity of the tin concentrate are shown in tables 3 and 4.
TABLE 3 comparative analysis Table of tin index of the present invention and the prior art (%)
As can be seen from Table 3, the new process of the invention, namely the floating-heavy (disc) -heavy (cradle), is used for recovering micro-fine tin from the ore slurry, and the grade and recovery rate of tin concentrate are higher than those of the prior process.
Table 4 comparative Table (%)
As can be seen from Table 4, the new process of "float-heavy (disk) -heavy (shaker)" according to example 1 of the present invention was used to recover fine tin particles from slime, and the yield and recovery rate of-0.037 mm to +0.010mm in tin concentrate were higher than those of the prior art.
Claims (6)
1. A method for recovering micro-fine tin from a slurry, comprising the steps of:
(1) Flotation primary desulfurization
Feeding the fine-particle-grade ore slurry into a flotation machine, and sequentially adding copper sulfate, butyl xanthate, ethionine and pine alcohol oil for desulfurization and flotation to obtain flotation sulfide ore concentrate and flotation sulfide ore tailings;
(2) Desliming of cyclone
Feeding the flotation sulfide ore tailings obtained in the step (1) into a cyclone, and removing ore slime of-5 um to obtain cyclone sand setting and cyclone overflow;
(3) Disc waste disposal
Feeding the cyclone sand setting obtained in the step (2) into a disc to obtain low-grade tin concentrate and tailings, wherein the tailings are discarded;
(4) Tin collection of shaking table
Feeding the low-grade tin concentrate obtained in the step (3) into a shaking table to obtain tin concentrate, middling and tailing, wherein the tailing is discarded.
2. The method for recovering fine tin particles from sludge according to claim 1, wherein the fine fraction of the sludge obtained in the step (1) contains tin 0.25% and the particle size is-0.037 mm not less than 90%.
3. The method for recovering micro-fine tin from slime according to claim 1, wherein copper sulfate in the step (1) is 400-500g/t, butyl xanthate is 350-400g/t, ethionine is 500-550g/t, and pine oil is 140-180g/t.
4. The method for recovering tin from sludge according to claim 1, wherein the concentration of the ore pulp in the disc operation in the step (3) is 15%, the ore feeding amount is 9kg/h, the vibration frequency is 32Hz, and the rotating speed is 26 rpm.
5. The method for recovering tin fine particles from slime according to claim 1, wherein the shaking table in the step (4) is a fine slime shaking table, the stroke of the shaking table is 5-7mm, and the stroke frequency is 480-520 rpm.
6. The method for recovering micro-fine tin from slime according to claim 1, wherein the tin concentrate of the step (4) contains 51.18% -52.58% tin, the recovery rate of shaking table operation is 25.47% -27.47%, the recovery rate of middlings is 4.81% -5.12%, and the recovery rate of shaking table operation is 49.75% -51.30%, and middlings are used as low-grade tin concentrate.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119838745A (en) * | 2025-02-17 | 2025-04-18 | 郴州锐智矿业科技有限公司 | Tin recovery method of secondary tailings |
| CN119972346A (en) * | 2025-03-18 | 2025-05-13 | 广东省科学院资源利用与稀土开发研究所 | A beneficiation method for recovering cassiterite from shaking table tailings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119838745A (en) * | 2025-02-17 | 2025-04-18 | 郴州锐智矿业科技有限公司 | Tin recovery method of secondary tailings |
| CN119972346A (en) * | 2025-03-18 | 2025-05-13 | 广东省科学院资源利用与稀土开发研究所 | A beneficiation method for recovering cassiterite from shaking table tailings |
| CN119972346B (en) * | 2025-03-18 | 2025-09-12 | 广东省科学院资源利用与稀土开发研究所 | A beneficiation method for recovering cassiterite from shaking table tailings |
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