CN117619555A - Device and method for recycling tin from flotation tailings - Google Patents
Device and method for recycling tin from flotation tailings Download PDFInfo
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- CN117619555A CN117619555A CN202311546865.3A CN202311546865A CN117619555A CN 117619555 A CN117619555 A CN 117619555A CN 202311546865 A CN202311546865 A CN 202311546865A CN 117619555 A CN117619555 A CN 117619555A
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- Prior art keywords
- stirring barrel
- flotation
- scavenging
- tailings
- roughing
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- 238000005188 flotation Methods 0.000 title claims abstract description 163
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004064 recycling Methods 0.000 title description 4
- 238000003756 stirring Methods 0.000 claims abstract description 185
- 230000002000 scavenging effect Effects 0.000 claims abstract description 120
- 239000012141 concentrate Substances 0.000 claims abstract description 68
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 241000588986 Alcaligenes Species 0.000 claims abstract description 31
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims abstract description 20
- HBROZNQEVUILML-UHFFFAOYSA-N salicylhydroxamic acid Chemical compound ONC(=O)C1=CC=CC=C1O HBROZNQEVUILML-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000002906 tartaric acid Nutrition 0.000 claims abstract description 20
- 239000011975 tartaric acid Substances 0.000 claims abstract description 20
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims abstract description 19
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 239000011707 mineral Substances 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 claims description 18
- 241000723346 Cinnamomum camphora Species 0.000 claims description 18
- 229960000846 camphor Drugs 0.000 claims description 18
- 229930008380 camphor Natural products 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 2
- 229940079593 drug Drugs 0.000 claims 1
- 238000012216 screening Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 239000004088 foaming agent Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 244000005700 microbiome Species 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- -1 sulfur ions Chemical class 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052952 pyrrhotite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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 provides a device and a method for recovering tin from flotation tailings, and belongs to the technical field of mineral processing. The device comprises a sieve plate, a shaking table, a flotation system and a fuming furnace, wherein the original tailings are sieved into ore particle-grade cassiterite with the particle size of +75 mu m and the ore particle-grade cassiterite with the particle size of-75 mu m through the sieve plate, and the shaking table is subjected to shaking table reselection, and a water inlet control valve is arranged on the shaking table, so that the water inlet is convenient to control, and the reselection effect is ensured; carrying out flotation on ore particles of-75 mu m cassiterite through a flotation system, adding tartaric acid, thioglycollic acid, salicylic hydroxamic acid, alcaligenes and other reagents into the flotation system to finally obtain tin concentrate, wherein the flotation system comprises a roughing device, two carefully selecting devices and two scavenging devices, and each flotation device uses a stirring barrel and a flotation column which are identical in structure and is communicated through a feeding barrel; and (3) treating tin concentrate obtained by the flotation system, and then sending the treated tin concentrate into a fuming furnace for direct fuming. The invention has the advantages of good ore dressing effect, environmental protection, low energy consumption and convenient operation.
Description
Technical Field
The invention belongs to the technical field of mineral processing, and relates to a device and a method for recovering tin from flotation tailings.
Background
Tin in flotation tailings mainly exists in a cassiterite form, the cassiterite is extremely fine in embedded granularity, pyrrhotite, chlorite and the like are contained in ores, meanwhile, the content of muddy components exceeds 20%, and the ores are difficult to separate, and when the ores are separated by adopting a shaking table, as the secondary concentrate granularity of each section of shaking table is thicker, a large amount of non-dissociated continuous organisms are enriched into a secondary concentrate backwashing system, high-impurity ore feeding is formed, and the product quality and the beneficiation recovery rate of the backwashing system are seriously influenced. The flotation is a mineral separation method which utilizes the physical and chemical properties of the mineral surface to separate, and the lower limit granularity of the effective recovery of gravity separation is much lower, so that the fine-fraction cassiterite mainly adopts a flotation process or adopts the combined operation of flotation, gravity separation, magnetic separation and other processes.
Patent CN202310086476.0 discloses a method for recovering tin from low-tin-grade zinc-sulfur flotation tailings, which comprises the following steps of 1, carrying out magnetic separation and primary desulfurization; 2. floating and secondary desulfurization; 3. reselecting and enriching tin; 4. floating and desulfurizing for three times; 5. and (5) re-selecting refined tin. The method can recover tin from zinc-sulfur flotation tailings containing less than 0.30% of tin to obtain tin concentrate with the grade of more than or equal to 46% and tin operation recovery rate of more than or equal to 30%, and has the defects that in the flotation process, fine-fraction ores deteriorate the flotation environment of ore pulp, the reaction area of ore particles is increased, and therefore the consumption of medicaments is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the device and the method for recovering tin from the flotation tailings, which have the advantages of good beneficiation effect, environmental friendliness, low energy consumption and convenience in operation.
In order to achieve the above object, the technical scheme of the present invention is as follows:
a device for recovering tin from flotation tailings comprises a sieve plate, a shaking table, a cyclone, a flotation system and a fuming furnace;
the left side of the table is a table motor, the lower side of the table is a table trough and a table trough, the table trough is provided with a table water inlet control valve, so that the water inlet can be controlled at any time, the concentration of ore pulp can be regulated, and the right side of the table trough is a table concentrate trough;
the top of the cyclone is provided with a cyclone feeding port, the upper end of the left side is provided with a cyclone overflow port, the lower end of the cyclone is provided with a cyclone underflow port, and the cyclone underflow port is connected with a flotation system through a feeding pipe;
the flotation system comprises a roughing stirring barrel, a roughing flotation column, a first selection stirring barrel, a first selection flotation column, a second selection stirring barrel, a second selection flotation column, a first scavenging stirring barrel, a first scavenging flotation column, a second scavenging stirring barrel, a second scavenging flotation column and a feeding pipe;
the center of the uppermost end of all stirring barrels in the flotation system is provided with a stirring motor, the stirring motor is connected with a stirring shaft and leads to the deep part of the stirring barrels, the stirring shaft is provided with stirring blades, the left side of the uppermost end is provided with a stirring barrel feeding port, the right side of the uppermost end is provided with a stirring barrel dosing port, and the lower end is provided with a feeding pipe communicated with the upper end of a corresponding flotation column;
overflow grooves are formed in the upper ends of all flotation columns in the flotation system, a bubble generator is arranged at the lower end of the overflow grooves, and a tailing pipe is arranged at the bottommost end of the overflow grooves;
the upper end of the roughing mixing drum is connected with the cyclone underflow opening through a feeding pipe, the lower end of the roughing mixing drum is connected with the upper end of the roughing flotation column through a feeding pipe, the overflow groove corresponding to the roughing flotation column is connected with the mixing drum inlet of the first concentrating mixing drum through a feeding pipe, and the tailing pipe of the roughing flotation column is connected with the mixing drum inlet of the first scavenging mixing drum through a feeding pipe;
the lower end of the first fine selection stirring barrel is connected with the upper end of the first fine selection flotation column through a feeding pipe, the overflow groove corresponding to the first fine selection flotation column is connected with the stirring barrel feeding port of the second fine selection stirring barrel through a feeding pipe, and the tailing pipe of the first fine selection flotation column is connected with the stirring barrel feeding port of the roughselection stirring barrel through a feeding pipe;
the lower end of the second concentrating stirring barrel is connected with the upper end of the second concentrating flotation column through a feeding pipe, the overflow groove corresponding to the second concentrating flotation column is led to the outside, tin concentrate coming out of the overflow groove is conveyed to the fuming furnace after being treated, and the tailing pipe of the second concentrating flotation column is directly discharged to the tail;
the lower end of the first scavenging stirring barrel is connected with the upper end of the first scavenging flotation column through a feeding pipe, an overflow groove corresponding to the first scavenging flotation column is connected with a stirring barrel feeding port of the roughing stirring barrel through a feeding pipe, and a tailing pipe of the first scavenging flotation column is connected with a stirring barrel feeding port of the second scavenging stirring barrel through a feeding pipe;
the lower end of the second scavenging stirring barrel is connected with the upper end of the second scavenging flotation column through a feeding pipe, the overflow groove corresponding to the second scavenging flotation column is connected with a stirring barrel feeding port of the first scavenging stirring barrel through a feeding pipe and returns, and a tailing pipe of the second scavenging flotation column is communicated with the outside;
as a further technical improvement, the sieve plate is a polyurethane sieve plate, and can screen cassiterite with the particle size of +75 mu m and-75 mu m;
a method for recovering tin from flotation tailings by using the device, which comprises the following steps:
s1, reselection: using a corresponding sieve plate to screen out cassiterite with the size of +75μm in the original tailings, transporting the cassiterite to a table, starting a table motor and a table water inlet control valve, adjusting the water inlet amount to 15% -30% of the concentration of ore pulp on a table water tank, and enabling concentrate after table treatment to flow out from a table concentrate tank;
s2, desliming: the cassiterite with the particle size of 75 mu m is conveyed into the cyclone from a feeding port of the cyclone to be desliming, overflow is directly dropped from an overflow port of the cyclone, settled sand is output from a bottom flow port of the cyclone and is conveyed into a roughing stirring barrel through a feeding pipe;
s3, floatation:
A. roughing: the method comprises the steps of enabling settled sand to enter a roughing stirring barrel from a feeding port of the stirring barrel, adding tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil into a dosing port of the stirring barrel, adding water to adjust the concentration of the agent to be 3-5%, adjusting the pH value of sodium carbonate to be 7-8, starting a stirring motor to fully stir, conveying ore pulp prepared with the agent to a roughing flotation column from a feeding pipe, opening a bubble generator to carry out roughing, enabling the floated tin rough concentrate to overflow to an overflow tank along with foam, conveying the tin rough concentrate to a first carefully-chosen stirring barrel, enabling roughing tailings to flow out from a tailing pipe and conveying the tin rough concentrate to the first clearly-chosen stirring barrel, enabling the tartaric acid to be a foaming agent with good performance, simultaneously enabling calcium-containing calcium carbonate minerals and the like to be restrained, enabling the thioglycollic acid to restrain copper and sulfur ions, enabling the salicylic hydroxamic acid to be a capturing agent with good environment, and enabling the camphor white oil to be a foaming agent;
B. carefully selecting: feeding the overflowed tin rough concentrate into a first concentration stirring barrel from a feeding hole of the stirring barrel, adding alcaligenes suspension with the concentration of 0.1 (calculated by OD) from a dosing hole, uniformly stirring in the first concentration stirring barrel, conveying to a first concentration flotation column for first concentration, conveying the left first concentration tailings into the roughing stirring barrel to be continuously roughed, conveying the overflowed first tin concentrate into a second concentration stirring barrel, adding alcaligenes suspension with the concentration of 0.1 (calculated by OD), uniformly stirring, conveying to a second concentration flotation column for second concentration, and finally obtaining the finally selected tin concentrate from an overflow tank, wherein the alcaligenes is a microorganism capable of adsorbing the tin ore, and has the advantages of good adsorption effect, mild reaction, good environment and low energy consumption;
C. and (3) scavenging: after roughing, roughing tailings discharged from a tailing pipe enter a first scavenging stirring barrel, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added from a dosing port, after the first scavenging stirring barrel is uniformly stirred, the mixture is conveyed to a first scavenging flotation column for first scavenging, overflowed first tin scavenging concentrate is conveyed back to the roughing stirring barrel to be subjected to roughing, the left first scavenging tailings are conveyed to a second scavenging stirring barrel to be subjected to scavenging continuously, after scavenging in the second scavenging flotation column, overflowed second tin scavenging concentrate is conveyed back to the first scavenging stirring barrel to be subjected to scavenging continuously, and finally the tailings are discharged from the tailing pipe.
Fuming: and finally, the tin concentrate flows out of an overflow tank of the second concentrating flotation column, and the blocks are air-dried and then conveyed to a fuming furnace for direct fuming.
As a further technical improvement, in the A. Coarse flotation in the step S3, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added into a dosing port of a stirring barrel, and the mass of the agent is 100-200 g, 150-300 g, 500-900 g and 40-80 g respectively for each t of raw tailings.
As a further technical improvement, in B.finishing flotation in the step S3, adding the alcaligenes suspension with the concentration of 0.1 (calculated by OD) from a dosing port, wherein 500-700 ml of alcaligenes suspension is correspondingly used for each t of raw tailings.
As a further technical improvement, in the B.finishing of the flotation in the step S3, the overflowed first tin concentrate is conveyed to a second finishing stirring barrel, and the alcaligenes suspension with the concentration of 0.1 (calculated by OD) is added, wherein 250-350 ml of alcaligenes suspension is correspondingly used for each t of primary tailings.
As a further technical improvement, in the C.scan of the flotation in the step S3, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added from a dosing port, and the mass of the agent is respectively 50-100 g, 70-150 g, 250-450 g and 20-40 g for each t of raw tailings.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the screen plate is adopted to screen ore particles, so that the coarser ore particles can have a better beneficiation effect under the shaking table gravity separation process, the finer ore particles are easier to obtain tin concentrate under the flotation process, and the direct fuming of the tin concentrate obtained by flotation is an effective method for treating lower-grade sulfur-containing tin concentrate, and the recovery effect of tin of the original tailings is good and the efficiency is high as a whole;
2. the flotation reagent used in the invention is mainly tartaric acid, salicylic hydroxamic acid, alcaligenes and other environment-friendly reagents, wherein the alcaligenes is used as a microorganism with good cassiterite adsorption effect, and the reaction is mild, the energy consumption is low and the cost is low;
3. the concentration of ore feeding and flushing water in the operation of the cradle can influence the treatment effect, and the water quantity regulating valve is arranged at the water inlet of the water tank, so that the water yield in the operation can be conveniently regulated, and the treatment effect is ensured.
4. The screen plate used in the invention is a polyurethane screen plate, and the polyurethane material has excellent wear resistance, is not easy to wear after long-term use, has good tensile strength and is not easy to deform.
Drawings
Fig. 1 is a schematic structural frame diagram of an apparatus for recovering tin from flotation tailings according to the present invention.
The attached drawings are identified:
1-sieve plate, 2-shaking table, 201-shaking table motor, 202-shaking table water inlet control valve, 203-shaking table water tank, 204-shaking table concentrate tank, 3-cyclone, 301-cyclone feeding port, 302-cyclone overflow port, 303-cyclone underflow port, 4-feeding pipe, 5-roughing stirring barrel, 6-roughing flotation column, 7-first carefully chosen stirring barrel, 8-first carefully chosen flotation column, 9-second carefully chosen stirring barrel, 10-second carefully chosen flotation column, 11-first scavenging stirring barrel, 12-first scavenging flotation column, 13-second scavenging stirring barrel, 14-second scavenging flotation column, 15-stirring barrel feeding port, 16-stirring barrel feeding port, 17-stirring motor, 18-stirring shaft, 19-overflow tank, 20-tailing pipe, 21-bubble generator and 22-fuming furnace.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, a device for recovering tin from flotation tailings comprises a sieve plate 1, a shaking table 2, a cyclone 3, a flotation system and a fuming furnace 22;
the left side of the cradle 2 is a cradle motor 201, the lower side is a cradle tank and a cradle water tank 203, the cradle water tank 203 is provided with a cradle water inlet control valve 202 which can control water inlet at any time, adjust pulp concentration, and the right side is a cradle concentrate tank 204;
the uppermost end of the cyclone 3 is a cyclone feeding port 301, the upper end of the left side is a cyclone overflow port 302, the lower end is a cyclone underflow port 303, and the cyclone underflow port 303 is connected with a flotation system through a feeding pipe 4;
the flotation system comprises a roughing mixer 5, a roughing flotation column 6, a first selection mixer 7, a first selection flotation column 8, a second selection mixer 9, a second selection flotation column 10, a first scavenging mixer 11, a first scavenging flotation column 12, a second scavenging mixer 13, a second scavenging flotation column 14 and a feeding pipe 4;
the center of the uppermost end of all stirring barrels in the flotation system is provided with a stirring motor 17, the stirring motor 17 is connected with a stirring shaft 18 which is led to the deep part of the stirring barrels, the stirring shaft 18 is provided with stirring blades, the left side of the uppermost end is provided with a stirring barrel feeding port 15, the right side of the uppermost end is provided with a stirring barrel dosing port 16, and the lower end is provided with a feeding pipe which is communicated with the upper end of a corresponding flotation column;
the upper ends of all flotation columns in the flotation system are provided with overflow tanks 19, the lower ends are provided with bubble generators 21, and the lowest ends are tailing pipes 20;
the upper end of the roughing mixing drum is provided with a mixing drum feeding port 15 which is connected with a cyclone underflow port 303 through a feeding pipe 4, the lower end of the roughing mixing drum is connected with the upper end of a roughing flotation column 6 through a feeding pipe 4, the corresponding overflow groove 19 of the roughing flotation column 6 is connected with the mixing drum feeding port 15 of a first fine mixing drum 7 through a feeding pipe 4, and the tailing pipe 20 of the roughing flotation column 6 is connected with the mixing drum feeding port 15 of a first scavenging mixing drum 11 through a feeding pipe 4;
the lower end of the first fine selection stirring barrel 7 is connected with the upper end of the first fine selection flotation column 8 through a feeding pipe 4, the overflow groove 19 corresponding to the first fine selection flotation column 8 is connected with the stirring barrel feeding hole 15 of the second fine selection stirring barrel 9 through the feeding pipe 4, and the tailing pipe 20 of the first fine selection flotation column 8 is connected with the stirring barrel feeding hole 15 of the rough selection stirring barrel 5 through the feeding pipe 4;
the lower end of the second concentrating stirring barrel 9 is connected with the upper end of the second concentrating flotation column 10 through a feed pipe 4, the overflow groove 19 corresponding to the second concentrating flotation column 10 is led to the outside, the tin concentrate coming out of the overflow groove 19 is conveyed to a fuming furnace 22 after being treated, and the tailing pipe 20 of the second concentrating flotation column 10 is directly discharged;
the lower end of the first scavenging stirring barrel 11 is connected with the upper end of the first scavenging flotation column 12 through a feeding pipe 4, the overflow groove 19 corresponding to the first scavenging flotation column 12 is connected with a stirring barrel feeding port 15 of the return roughing stirring barrel 5 through the feeding pipe 4, and a tailing pipe 20 of the first scavenging flotation column 12 is connected with a stirring barrel feeding port 15 of the second scavenging stirring barrel 13 through the feeding pipe 4;
the lower end of the second scavenging stirring barrel 13 is connected with the upper end of the second scavenging flotation column 14 through a feeding pipe 4, an overflow groove 19 corresponding to the second scavenging flotation column 14 is connected with a stirring barrel feeding hole 15 for returning to the first scavenging stirring barrel 11 through the feeding pipe 4, and a tailing pipe 20 of the second scavenging flotation column 14 is communicated with the outside;
the method for recycling tin from the flotation tailings by using the device of the embodiment specifically comprises the following steps:
s1, reselection: using a corresponding sieve plate 1 to sieve out cassiterite with the size of +75μm in the original tailings, transporting the cassiterite to a table 2, starting a table motor 201 and a table water inlet control valve 202, adjusting the water inlet amount to 15% of the concentration of ore pulp on a table water tank 203, and discharging concentrate after table treatment from a table concentrate tank 204;
s2, desliming: the cassiterite with the particle size of 75 mu m is conveyed into the cyclone 3 from the cyclone feeding port 301 for desliming, overflowed mud is directly dropped from the cyclone overflow port 302, settled sand is output from the cyclone underflow port 303 and is conveyed into the roughing stirring barrel 5 through the feeding pipe 4;
s3, floatation:
A. roughing: the sand setting enters a roughing mixing drum 5 from a mixing drum feeding port 15, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added into a mixing drum feeding port 16, the mass of each t of raw tailings is respectively corresponding to 100g, 150g, 500g and 40g of the medicaments, water is added to prepare the mixture to 3% of the concentration, sodium carbonate adjusts the pH value 7, a mixing motor 17 is started to fully stir, the prepared ore pulp is conveyed to a roughing flotation column 6 from a feeding pipe 4, a bubble generator 21 is opened for roughing, the floated tin rough concentrate overflows to an overflow tank 19 along with foam and is conveyed to a first cleaning mixing drum 7, the roughing tailings flows out from a tailing pipe 20 and is conveyed to a first cleaning mixing drum 11, tartaric acid is a foaming agent with good performance, calcium carbonate minerals and the like can be inhibited, thioglycollic acid can inhibit copper and sulfur ions, salicylic hydroxamic acid is a capturing agent with good environment, and camphor white oil is a foaming agent;
B. carefully selecting: feeding the overflowed tin rough concentrate into a first concentration stirring barrel 7 from a stirring barrel feeding hole 15, adding alcaligenes suspension with the concentration of 0.1 (calculated by OD) from a dosing hole, using 500ml of alcaligenes suspension for each t of raw tailings, uniformly stirring the raw tailings in the first concentration stirring barrel 7, conveying the raw tailings to a first concentration flotation column 8 for first concentration, conveying the left first concentration tailings into the roughing stirring barrel 5 for continuous roughing, conveying the overflowed first tin concentrate into a second concentration stirring barrel 9, adding alcaligenes suspension with the concentration of 0.1 (calculated by OD), using 250ml of alcaligenes suspension for each t of raw tailings, conveying the raw tailings to a second concentration flotation column 10 for second concentration after uniform stirring, and finally obtaining the final selected tin concentrate from an overflow tank 19, wherein the alcaligenes are microorganisms capable of adsorbing the tin ores, and have good adsorption effect, mild reaction, good environment and low energy consumption;
C. and (3) scavenging: after roughing, roughing tailings discharged from a tailing pipe 20 enter a first scavenging stirring barrel 11, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added from a dosing port 16, each t of raw tailings respectively correspond to 50g, 70g, 250g and 20g of the agent in mass, after the first scavenging stirring barrel 11 is uniformly stirred, the raw tailings are conveyed to a first scavenging flotation column 12 for first scavenging, overflowed first tin scavenging concentrate is conveyed back to the roughing stirring barrel 5 for continuing roughing, remaining first scavenging tailings are conveyed to a second scavenging stirring barrel 13 for continuing scavenging, after scavenging in the second scavenging flotation column 14, overflowed second tin scavenging concentrate is conveyed back to the first scavenging stirring barrel 11 for continuing scavenging, and finally tailings are discharged from the tailing pipe 20.
S4, fuming: the final tin concentrate flows out of the overflow launder 19 of the second concentrating flotation column 10, is air dried and is transported to a fuming furnace 22 for direct fuming.
The specific beneficiation results of this example are shown in table 1.
Table 1:
example 2:
the device for recovering tin from flotation tailings in the embodiment is different from the device in the embodiment 1 in that the sieve plate 1 is a polyurethane sieve plate and can screen cassiterite with the particle size of +75 mu m and-75 mu m;
the method for recycling tin from the flotation tailings by using the device of the embodiment specifically comprises the following steps:
s1, reselection: using a corresponding sieve plate 1 to sieve out cassiterite with the size of +75μm in the original tailings, transporting the cassiterite to a table 2, starting a table motor 201 and a table water inlet control valve 202, adjusting the water inlet amount to 30% of the concentration of ore pulp on a table water tank 203, and discharging concentrate after table treatment from a table concentrate tank 204;
s2, desliming: the cassiterite with the particle size of 75 mu m is conveyed into the cyclone 3 from the cyclone feeding port 301 for desliming, overflowed mud is directly dropped from the cyclone overflow port 302, settled sand is output from the cyclone underflow port 303 and is conveyed into the roughing stirring barrel 5 through the feeding pipe 4;
s3, floatation:
A. roughing: the method comprises the steps of (1) enabling settled sand to enter a roughing stirring barrel 5 from a stirring barrel feeding port 15, adding tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil into a stirring barrel dosing port 16, wherein each t of raw tailings respectively corresponds to 200g, 300g, 900g and 80g of the agent in mass, adding water to adjust the agent concentration to 5%, adjusting the pH value to 7-8 by sodium carbonate, starting a stirring motor 17 to fully stir, conveying the ore pulp prepared with the agent from a feeding pipe 4 to a roughing flotation column 6, opening a bubble generator 21 for roughing, overflowing the floated tin rough concentrate to an overflow groove 19 along with foam, conveying the tin rough concentrate to a first carefully-chosen stirring barrel 7, enabling the roughing tailings to flow out from a tailing pipe 20 and conveying the tin rough-chosen stirring barrel 11, enabling tartaric acid to be a foaming agent with good performance, simultaneously enabling calcium-containing calcium carbonate minerals and the like to be inhibited, enabling thioglycollic acid to inhibit copper and sulfur ions, enabling salicylic hydroxamic acid to be a capturing agent with good environment, and enabling the camphor white oil to be a foaming agent;
B. carefully selecting: feeding the overflowed tin rough concentrate into a first concentration stirring barrel 7 from a stirring barrel feeding hole 15, adding alcaligenes suspension with the concentration of 0.1 (calculated by OD) from a dosing hole, using 700ml of alcaligenes suspension for each t of raw tailings, uniformly stirring the raw tailings in the first concentration stirring barrel 7, conveying the raw tailings to a first concentration flotation column 8 for first concentration, conveying the left first concentration tailings into the roughing stirring barrel 5 for continuous roughing, conveying the overflowed first tin concentrate into a second concentration stirring barrel 9, adding alcaligenes suspension with the concentration of 0.1 (calculated by OD), using 350ml of alcaligenes suspension for each t of raw tailings, conveying the raw tailings to a second concentration flotation column 10 for second concentration after uniform stirring, and finally obtaining the final selected tin concentrate from an overflow tank 19, wherein the alcaligenes are microorganisms capable of adsorbing the tin ores, and have good adsorption effect, mild reaction, good environment and low energy consumption;
C. and (3) scavenging: after roughing, roughing tailings discharged from a tailing pipe 20 enter a first scavenging stirring barrel 11, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added from a dosing port 16, each t of raw tailings respectively correspond to the above agents with the mass of 100g, 150g, 450g and 40g, after the first scavenging stirring barrel 11 is uniformly stirred, the raw tailings are conveyed to a first scavenging flotation column 12 for first scavenging, overflowed first tin scavenging concentrate is conveyed back to the roughing stirring barrel 5 for continuing roughing, the left first scavenging tailings are conveyed to a second scavenging stirring barrel 13 for continuing scavenging, the overflowed second tin scavenging concentrate is conveyed back to the first scavenging stirring barrel 11 for continuing scavenging after scavenging in the second scavenging flotation column 14, and finally the tailings are discharged from the tailing pipe 20.
S4, fuming: the final tin concentrate flows out of the overflow launder 19 of the second concentrating flotation column 10, is air dried and is transported to a fuming furnace 22 for direct fuming.
The specific beneficiation results of this example are shown in table 2.
Table 2:
example 3:
this example differs from example 1 in that the method for recovering tin from flotation tailings using the apparatus of example 1 comprises the following steps:
s1, reselection: using a corresponding sieve plate 1 to sieve out cassiterite with the size of +75 mu m in the original tailings, transporting the cassiterite to a table 2, starting a table motor 201 and a table water inlet control valve 202, adjusting the water inlet amount to 25% of the concentration of ore pulp on a table water tank 203, and discharging concentrate after table treatment from a table concentrate tank 204;
s2, desliming: the cassiterite with the particle size of 75 mu m is conveyed into the cyclone 3 from the cyclone feeding port 301 for desliming, overflowed mud is directly dropped from the cyclone overflow port 302, settled sand is output from the cyclone underflow port 303 and is conveyed into the roughing stirring barrel 5 through the feeding pipe 4;
s3, floatation:
A. roughing: the method comprises the steps of (1) enabling settled sand to enter a roughing stirring barrel 5 from a stirring barrel feeding port 15, adding tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil into a stirring barrel feeding port 16, wherein each t of raw tailings respectively corresponds to 150g, 240g, 700g and 60g of the agent in mass, adding water to adjust the agent concentration to 3-5%, adjusting the pH value to 7 by sodium carbonate, starting a stirring motor 17 to fully stir, conveying the ore pulp prepared with the agent from a feeding pipe 4 to a roughing flotation column 6, opening a bubble generator 21 for roughing, overflowing the floated tin rough concentrate to an overflow groove 19 along with foam, conveying the tin rough concentrate to a first refining stirring barrel 7, enabling the roughing tailings to flow out from a tailing pipe 20 and conveying the tin rough concentrate to a first scavenging stirring barrel 11, enabling tartaric acid to be a foaming agent with good performance, simultaneously enabling calcium-containing calcium carbonate minerals and the like to be inhibited, enabling thioglycollic acid to inhibit copper and sulfur ions, enabling salicylic hydroxamic acid to be a capturing agent with good environment, and enabling the camphor white oil to be a foaming agent;
B. carefully selecting: feeding the overflowed tin rough concentrate into a first concentration stirring barrel 7 from a stirring barrel feeding hole 15, adding alcaligenes suspension with the concentration of 0.1 (calculated by OD) from a dosing hole, using 600ml of alcaligenes suspension for each t of raw tailings, uniformly stirring the raw tailings in the first concentration stirring barrel 7, conveying the raw tailings to a first concentration flotation column 8 for first concentration, conveying the left first concentration tailings into the roughing stirring barrel 5 for continuous roughing, conveying the overflowed first tin concentrate into a second concentration stirring barrel 9, adding alcaligenes suspension with the concentration of 0.1 (calculated by OD), using 300ml of alcaligenes suspension for each t of raw tailings, conveying the raw tailings to a second concentration flotation column 10 for second concentration after uniform stirring, and finally obtaining the final selected tin concentrate from an overflow tank 19, wherein the alcaligenes are microorganisms capable of adsorbing the tin ores, and have good adsorption effect, mild reaction, good environment and low energy consumption;
C. and (3) scavenging: after roughing, roughing tailings discharged from a tailing pipe 20 enter a first scavenging stirring barrel 11, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added from a dosing port 16, each t of raw tailings respectively correspond to 75g, 100g, 350g and 30g of the agent in mass, after the first scavenging stirring barrel 11 is uniformly stirred, the raw tailings are conveyed to a first scavenging flotation column 12 for first scavenging, overflowed first tin scavenging concentrate is conveyed back to the roughing stirring barrel 5 for continuing roughing, remaining first scavenging tailings are conveyed to a second scavenging stirring barrel 13 for continuing scavenging, after scavenging in the second scavenging flotation column 14, overflowed second tin scavenging concentrate is conveyed back to the first scavenging stirring barrel 11 for continuing scavenging, and finally tailings are discharged from the tailing pipe 20.
S4, fuming: the final tin concentrate flows out of the overflow launder 19 of the second concentrating flotation column 10, is air dried and is transported to a fuming furnace 22 for direct fuming.
The specific beneficiation results of this example are shown in table 3.
Table 3:
it is to be understood that the above-described embodiments are merely illustrative of the invention and are not intended to limit the practice of the invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art; it is not necessary here nor is it exhaustive of all embodiments; and obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (7)
1. The device for recovering tin from flotation tailings is characterized in that: comprises a sieve plate (1), a shaking table (2), a cyclone (3), a flotation system and a fuming furnace (22); the left side of the table (2) is provided with a table motor (201), the lower part is provided with a mineral tank and a table water tank (203), the table water tank (203) is provided with a table water inlet control valve (202), and the right side is provided with a table concentrate tank (204); the uppermost end of the cyclone (3) is a cyclone feeding port (301), the upper end of the left side is a cyclone overflow port (302), the lower end is a cyclone underflow port (303), and the cyclone underflow port (303) is connected with a flotation system through a feeding pipe (4); the flotation system comprises a roughing stirring barrel (5), a roughing flotation column (6), a first selecting stirring barrel (7), a first selecting flotation column (8), a second selecting stirring barrel (9), a second selecting flotation column (10), a first scavenging stirring barrel (11), a first scavenging flotation column (12), a second scavenging stirring barrel (13), a second scavenging flotation column (14) and a feeding pipe (4); the center of the uppermost end of all stirring barrels in the flotation system is provided with a stirring motor (17), the stirring motor (17) is connected with a stirring shaft (18) which is led to the deep part of the stirring barrels, the stirring shaft (18) is provided with stirring blades, the left side of the uppermost end is provided with a stirring barrel feeding port (15), the right side of the uppermost end is provided with a stirring barrel dosing port (16), and the lower end is provided with a feeding pipe which is communicated with the upper end of a corresponding flotation column; the upper ends of all flotation columns in the flotation system are provided with overflow tanks (19), the lower ends are provided with bubble generators (21), and the lowest ends are tailing pipes (20); the feeding port (15) of the stirring barrel at the upper end of the roughing stirring barrel is connected with the bottom flow port (303) of the cyclone through a feeding pipe (4), the lower end of the stirring barrel is connected with the upper end of the roughing flotation column (6) through the feeding pipe (4), the overflow groove (19) corresponding to the roughing flotation column (6) is connected with the stirring barrel feeding port (15) of the first carefully chosen stirring barrel (7) through the feeding pipe (4), and the tailing pipe (20) of the roughing flotation column (6) is connected with the stirring barrel feeding port (15) of the first scavenging stirring barrel (11); the lower end of the first fine selection stirring barrel (7) is connected with the upper end of the first fine selection flotation column (8) through a feeding pipe (4), an overflow groove (19) corresponding to the first fine selection flotation column (8) is connected with a stirring barrel feeding hole (15) of the second fine selection stirring barrel (9) through the feeding pipe (4), and a tailing pipe (20) of the first fine selection flotation column (8) is connected with a stirring barrel feeding hole (15) of the roughselection stirring barrel (5) through the feeding pipe (4); the lower end of the second concentrating stirring barrel (9) is connected with the upper end of the second concentrating flotation column (10) through a feeding pipe (4), the overflow groove (19) corresponding to the second concentrating flotation column (10) is led to the outside, tin concentrate coming out of the overflow groove (19) is conveyed to a fuming furnace (22) after being treated, and a tailing pipe (20) of the second concentrating flotation column (10) is directly discharged to the tail; the lower end of the first scavenging stirring barrel (11) is connected with the upper end of the first scavenging flotation column (12) through a feeding pipe (4), an overflow groove (19) corresponding to the first scavenging flotation column (12) is connected with a stirring barrel feeding hole (15) of the roughing stirring barrel (5) through the feeding pipe (4), and a tailing pipe (20) of the first scavenging flotation column (12) is connected with a stirring barrel feeding hole (15) of the second scavenging stirring barrel (13) through the feeding pipe (4); the lower extreme of second scavenging agitator (13) is connected through the upper end of feed tube (4) and second scavenging flotation column (14), overflow launder (19) that second scavenging flotation column (14) correspond returns agitator pan feeding mouth (15) of first scavenging agitator (11) through feed tube (4) connection, tailing pipe (20) of second scavenging flotation column (14) communicate outside.
2. The apparatus for recovering tin from flotation tailings according to claim 1, wherein: the screen plate (1) is a polyurethane screen plate.
3. A method for recovering tin from flotation tailings, which is characterized by comprising the following steps: an apparatus for recovering tin using the flotation tailings according to any one of claims 1-2, comprising in particular the steps of:
s1, reselection: screening out cassiterite with the size of +75 mu m in the original tailings by using a corresponding screen plate (1), transporting the cassiterite to a shaking table (2), starting a shaking table motor (201) and a shaking table water inlet control valve (202), regulating water inflow to the concentration of ore pulp on a shaking table water tank (203) to be 15% -30%, and enabling concentrate treated by the shaking table to flow out of a shaking table concentrate tank (204);
s2, desliming: the cassiterite with the particle size of 75 mu m is conveyed into a cyclone (3) from a cyclone feed inlet (301) for desliming, overflowed mud is directly dropped from a cyclone overflow port (302), settled sand is output from a cyclone underflow port (303) and is conveyed into a roughing stirring barrel (5) through a feed pipe (4);
s3, floatation:
A. roughing: the sand setting enters a roughing mixing drum (5) from a mixing drum feeding port (15), tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added into a mixing drum dosing port (16), water is added to be mixed until the concentration of the agent is 3-5%, pH value is adjusted to 7-8 by sodium carbonate, a mixing motor (17) is started to be fully mixed, ore pulp prepared with the agent is conveyed to a roughing flotation column (6) from a feeding pipe (4), a bubble generator (21) is opened for roughing, the floated tin rough concentrate overflows to an overflow tank (19) along with foam and is conveyed to a first concentration mixing drum (7), and roughing tailings flow out from a tailing pipe (20) and are conveyed to a first scavenging mixing drum (11);
B. carefully selecting: feeding the overflowed tin rough concentrate into a first concentration stirring barrel (7) from a stirring barrel feed inlet (15), adding alcaligenes suspension with the concentration of 0.1 from a dosing port, uniformly stirring in the first concentration stirring barrel (7), conveying to a first concentration flotation column (8), carrying out first concentration, conveying the left first concentration tailings into the rough concentration stirring barrel (5) to continue rough concentration, conveying the overflowed first tin concentrate into a second concentration stirring barrel (9), adding alcaligenes suspension with the concentration of 0.1, uniformly stirring, conveying to a second concentration flotation column (10), carrying out second concentration, and finally obtaining the finally selected tin concentrate from an overflow tank (19);
C. and (3) scavenging: feeding roughing tailings discharged from a tailings pipe (20) after roughing into a first scavenging stirring barrel (11), adding tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil from a dosing port (16), uniformly stirring the materials in the first scavenging stirring barrel (11), conveying the materials to a first scavenging flotation column (12), carrying out first scavenging, conveying overflowed first tin scavenging concentrate back to the roughing stirring barrel (5) for roughing, conveying the left first scavenging tailings into a second scavenging stirring barrel (13) for scavenging, conveying overflowed second tin scavenging concentrate back to the first scavenging stirring barrel (11) for scavenging, and discharging the final tailings from the tailings pipe (20);
s4, fuming: the final tin concentrate flows out of the overflow trough (19) of the second concentrating flotation column (10), is air-dried and then is conveyed to a fuming furnace (22) for direct fuming.
4. A method of recovering tin from flotation tailings according to claim 3, wherein: in the A. Coarse selection of the flotation in the step S3, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added into a drug adding port (16) of a stirring barrel, and the mass of the agent is 100-200 g, 150-300 g, 500-900 g and 40-80 g respectively for each t of raw tailings.
5. A method of recovering tin from flotation tailings according to claim 3, wherein: and in B. Refining of the flotation in the step S3, adding the alcaligenes suspension with the concentration of 0.1 from a dosing port, wherein 500-700 ml of alcaligenes suspension is correspondingly used for each t of raw tailings.
6. A method of recovering tin from flotation tailings according to claim 3, wherein: in the B.finishing of the flotation in the step S3, the overflowed first tin concentrate is conveyed to a second finishing stirring barrel (9), and the alcaligenes suspension with the concentration of 0.1 is added, wherein 250-350 ml of alcaligenes suspension is correspondingly used for each t of the original tailings.
7. A method of recovering tin from flotation tailings according to claim 3, wherein: in the C.scanning of the flotation in the step S3, tartaric acid, thioglycollic acid, salicylic hydroxamic acid and camphor white oil are added from a dosing port (16), and the mass of the agent is 50-100 g, 70-150 g, 250-450 g and 20-40 g respectively for each t of raw tailings.
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