CN117772402A - Ore dressing method for regrinding and floating fluorite from multi-intergrowth associated fluorite tailings - Google Patents
Ore dressing method for regrinding and floating fluorite from multi-intergrowth associated fluorite tailings Download PDFInfo
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- CN117772402A CN117772402A CN202311782461.4A CN202311782461A CN117772402A CN 117772402 A CN117772402 A CN 117772402A CN 202311782461 A CN202311782461 A CN 202311782461A CN 117772402 A CN117772402 A CN 117772402A
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- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 title claims abstract description 124
- 239000010436 fluorite Substances 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000007667 floating Methods 0.000 title claims abstract description 25
- 230000005291 magnetic effect Effects 0.000 claims abstract description 46
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 44
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 28
- 239000011707 mineral Substances 0.000 claims abstract description 28
- 238000005188 flotation Methods 0.000 claims abstract description 23
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 22
- 239000004576 sand Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 14
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- 238000010494 dissociation reaction Methods 0.000 claims abstract description 8
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
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- 239000012141 concentrate Substances 0.000 claims description 74
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 20
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 235000019353 potassium silicate Nutrition 0.000 claims description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 229910021532 Calcite Inorganic materials 0.000 claims description 5
- 239000010433 feldspar Substances 0.000 claims description 5
- 239000002223 garnet Substances 0.000 claims description 5
- 239000006148 magnetic separator Substances 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 229910052611 pyroxene Inorganic materials 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 238000007885 magnetic separation Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 230000002195 synergetic effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
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- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- IZIJITWQULSWFA-UHFFFAOYSA-N [Bi]=S.[Mo] Chemical compound [Bi]=S.[Mo] IZIJITWQULSWFA-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a beneficiation method for regrinding and floating fluorite from multi-conjoined associated fluorite tailings, and relates to the field of metal and nonmetal ore flotation. The beneficiation method for regrinding and floating fluorite by using the multi-conjoined associated fluorite tailings comprises the following steps: s1, preparing a mineral sample; s2, concentrating; s3, grading, namely, putting the graded sand with the concentration of about 50-60% into Ai Shamo for regrinding; s4, carrying out strong magnetic operation; s5, fluorite rough concentration; s6, fluorite selection. The re-grinding reinforced magnetic flotation technology is used for re-recovering fluorite tailings, so that re-dissociation and friction of an ore sample to be selected are realized, mineral particles generate a plurality of new dissociation surfaces, strong magnetism has a good separation effect on weak magnetic gangue minerals, and a calcium carbonate inhibitor is used for reducing the content of calcium carbonate for subsequent operation by coarsely inhibiting calcium carbonate and discharging calcium carbonate for multiple times, so that the pressure is reduced, and good sorting indexes are obtained.
Description
Technical Field
The invention relates to the technical field of metal and nonmetal ore flotation, in particular to a beneficiation method for regrinding and floating fluorite from multi-conjoined associated fluorite tailings.
Background
Fluorite is also called fluorite, is a strategic nonmetallic mineral resource, has wide application in the traditional industry and has more and more important application in the high and new technology industry. The persimmon bamboo garden polymetallic ore is typical associated fluorite ore, and molybdenum bismuth sulfide ore and tungsten ore are recovered before associated fluorite is recovered, so that the flotation concentration, ore grinding fineness, pH value and the like in the separation process need to be comprehensively considered, and the current fluorite separation is not necessarily the optimal separation condition.
The flotation method is a very widely applied beneficiation method in beneficiation production, and refers to a beneficiation process of floating solid minerals from a water suspension (ore pulp) according to the difference of physical and chemical properties of the surfaces of the minerals, the flotation is widely applied in beneficiation industry, and is most suitable for separating low-grade and fine-particle dip-dyed ores, the ores are ground to the particle size meeting the flotation requirement before flotation, and useful minerals are basically dissociated to separate monomers. And adding a flotation reagent. During flotation, air is introduced into ore pulp to form a large number of bubbles, so that particles which are not easy to wet by water, namely commonly called hydrophobic minerals, are attached to the bubbles and float to the surface of the ore pulp along with the bubbles to form a mineralized foam layer; while those particles that are easily wetted by water, commonly referred to as hydrophilic minerals, do not adhere to the bubbles and remain in the pulp. The mineralized foam is discharged, namely, the aim of sorting is achieved.
The fluorite tailings obtained by flotation are characterized in that: poor dissociation degree of monomer, more continuous organisms, uneven particle size distribution, more middle parts and less middle parts, more residual agents in the front flotation stage and the like, so that the direct re-flotation index of fluorite tailings is not ideal.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a beneficiation method for regrinding and floating fluorite by using multi-conjoined associated fluorite tailings, which solves the problems of unsatisfactory direct regrinding indexes of the fluorite tailings caused by a plurality of defects of the fluorite tailings obtained by flotation in the prior art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a beneficiation method for regrinding and floating fluorite from multi-conjoined associated fluorite tailings comprises the following steps:
s1, preparing a mineral sample;
s2, concentrating;
s3, grading, namely, putting the graded sand with the concentration of about 50-60% into Ai Shamo for regrinding;
s4, carrying out strong magnetic operation;
s5, fluorite roughing, namely sequentially adding 1-3kg/t of sodium carbonate serving as a regulator, 0.5-1.5kg/t of sodium silicate, 80-250g/t of calcium carbonate inhibitor and 100-300g/t of fluorite collector to carry out slurry mixing to carry out fluorite roughing, so as to obtain fluorite roughing concentrate and fluorite roughing tailings;
s6, fluorite selection;
the regrind reinforced magnetic flotation technology is used for regrinding fluorite tailings, so that regrinding and friction of the ore sample are realized.
Preferably, in S1, the ore sample is derived from the associated fluorite tailings of a metal concentrating plant, the concentration is 8-15%, the fineness is-0.074 mm, the content is 65-72%, the fluorite grade is 20-35%, and the calcium carbonate grade is 8-15%.
Preferably, the specific step of the concentration operation is to concentrate the mineral sample obtained in the step S1 in a concentration tank or an inclined plate concentration box to obtain the underflow concentration of 30-40%.
Preferably, the classification operation specifically includes the steps of classifying the underflow cyclone obtained in S2, and grinding the underflow cyclone until the classified settled sand concentration reaches Ai Shamo by about 50-60%.
Preferably, in Ai Shamo regrinding in the classifying operation, regrinding products are combined and concentrated underflow enters a cyclone for classifying operation, the concentration of overflow products is 30-40%, the fineness is-0.074 mm, the content is 80-90%, and the sand setting is returned in a closed circuit.
Preferably, the step of the strong magnetic operation is as follows, the overflow product obtained in the step S3 is subjected to the strong magnetic operation, and the gangue minerals with magnetism are magnetically separated.
Preferably, in S4, the ferromagnetic operation uses a 1T ferromagnetic machine to ferromagnetic the overflow product.
Preferably, in S1, fluorite has uneven particle size distribution, more ends, less middle, and gangue minerals mainly include garnet, calcite, spodumene, feldspar, etc.
Preferably, the fluorite rough concentration concentrate obtained in the step S5 is subjected to four times of concentration to obtain final fluorite concentrate, acidified water glass 0-300g/t and hydrochloric acid 0-600g/t are respectively added into the concentrate 1 to the concentrate 4, middlings in the concentrate 1 are separated, middlings in the concentrate 2 are returned to the concentrate 1, middlings in the concentrate 3 are returned to the concentrate 2, and middlings in the concentrate 4 are returned to the concentrate 3.
Preferably, in the step S4, the strong magnetism adopts a semi-countercurrent magnetic separator, and the specific steps are that ore pulp enters a separation space from the lower part of a tank body in a loose suspension state, the movement direction of the ore pulp is basically the same as the magnetic field force direction, the ore particles reach the cylindrical surface with high magnetic field force, and tailings are discharged from tailing holes on a bottom plate, so that the height of a overflow surface can keep the ore pulp level in the tank body.
(III) beneficial effects
The invention provides a beneficiation method for regrinding and floating fluorite from multi-conjoined associated fluorite tailings. The beneficial effects are as follows:
according to the invention, through classification operation, the classified sand setting concentration is about 50-60% and enters Ai Shamo for regrinding, regrinding products are combined, concentrated bottom flow enters a cyclone for classification operation, overflow products are subjected to strong magnetic operation, magnetic gangue minerals are magnetically separated, non-magnetic separation products are sequentially added with a regulator, an inhibitor and a collector for size mixing to perform fluorite roughing, fluorite roughing concentrate and fluorite roughing tailings are obtained, regrinding reinforced magnetic addition flotation technology is used for regrinding the fluorite roughing tailings, re-dissociation and friction of an in-selected ore sample are realized, a plurality of new dissociation surfaces are generated on mineral particles, strong magnetism has a good separation effect on weak magnetic gangue minerals, and calcium carbonate inhibitor is adopted for roughing to inhibit calcium carbonate and discharge calcium carbonate for reducing calcium carbonate content for subsequent operation, so that pressure is reduced, and good separation indexes are obtained.
Drawings
FIG. 1 is a flow chart of a fluorite tailings regrinding strong magnetic flotation fluorite test in a dressing method for regrinding and flotation fluorite from multiple conjoined associated fluorite tailings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
as shown in fig. 1, the embodiment of the invention provides a beneficiation method for regrinding and floatation of fluorite from multi-conjoined associated fluorite tailings, which comprises the following steps:
s1, preparing a mineral sample;
s2, concentrating;
s3, grading, namely, putting the graded sand with the concentration of about 50-60% into Ai Shamo for regrinding;
s4, carrying out strong magnetic operation;
s5, fluorite roughing, namely sequentially adding 1-3kg/t of sodium carbonate serving as a regulator, 0.5-1.5kg/t of sodium silicate, 80-250g/t of calcium carbonate inhibitor and 100-300g/t of fluorite collector to carry out slurry mixing to carry out fluorite roughing, so as to obtain fluorite roughing concentrate and fluorite roughing tailings;
s6, fluorite concentration, namely four times of concentration is carried out on the fluorite rough concentration concentrate obtained in the step S5, so that final fluorite concentrate is obtained, 0-300g/t of acidified water glass and 0-600g/t of hydrochloric acid are respectively added into the concentrate 1 to the concentrate 4, middlings of the concentrate 1 are separated, middlings of the concentrate 2 return to the concentrate 1, middlings of the concentrate 3 return to the concentrate 2, and middlings of the concentrate 4 return to the concentrate 3.
In S1, the ore sample is derived from the associated fluorite tailings of a metal concentrating mill, the concentration is 8-15%, the fineness is-0.074 mm, the content is 65-72%, the fluorite grade is 20-35%, and the calcium carbonate grade is 8-15%.
The specific step of the concentration operation is to concentrate the ore sample obtained in the step S1 in a concentration tank or an inclined plate concentration box to obtain the underflow concentration of 30-40%.
The grading operation comprises the following specific steps of grading the underflow cyclone obtained in the step S2, wherein about 50-60% of graded sand concentration enters Ai Shamo for regrinding.
In Ai Shamo regrinding in the classifying operation, regrinding products are combined, concentrated bottom flow enters a cyclone to carry out classifying operation, the concentration of overflow products is 30-40%, the fineness is-0.074 mm, the content is 80-90%, and sand setting is returned in a closed circuit.
The step of strong magnetic operation is as follows, the overflow product obtained in the step S3 is subjected to strong magnetic operation, and magnetic gangue minerals are obtained through magnetic separation.
And S4, carrying out strong magnetic operation on the overflow product by adopting a 1T strong magnetic machine.
In S1, fluorite has uneven granularity distribution, more ends, less middle and less gangue minerals mainly comprise garnet, calcite, common pyroxene, feldspar and the like.
In S4, the strong magnetism adopts a semi-countercurrent magnetic separator, and the specific steps are as follows, ore pulp enters a separation space from the lower part of a tank body in a loose suspension state, the movement direction of the ore pulp is basically the same as the magnetic field force direction, the ore particles reach the cylindrical surface with very high magnetic field force, and tailings are discharged from tailing holes on a bottom plate, so that the height of an overflow surface can keep the ore pulp level in the tank body.
The specific working principle is as follows:
preparing associated fluorite tailings with the concentration of 8-15%, the fineness of-0.074 mm, the content of 65-72%, the fluorite grade of 20-35% and the calcium carbonate grade of 8-15%;
concentrating the obtained ore sample in a concentration tank or an inclined plate concentration tank to obtain an underflow concentration of 30-40%, classifying the obtained underflow by a cyclone, enabling classified sand setting concentration to be about 50-60%, enabling the classified sand setting concentration to enter Ai Shamo, regrinding products to be combined and concentrated into the cyclone, classifying the concentrated underflow, enabling overflow products to have a concentration of 30-40%, fineness of-0.074 mm and a content of 80-90%, enabling sand setting to return in a closed circuit, performing strong magnetic operation on the obtained overflow products, magnetically separating out magnetic gangue minerals, sequentially adding 1-3kg/t of regulator sodium carbonate, 0.5-1.5kg/t of water glass, 80-250g/t of calcium carbonate inhibitor and 100-300g/t of fluorite collector to perform fluorite roughing, and obtaining fluorite roughing concentrate and fluorite roughing tailings;
the obtained fluorite rough concentration concentrate is subjected to 4 times of concentration to obtain final fluorite concentrate, acidified water glass 0-300g/t and hydrochloric acid 0-600g/t are respectively added into the concentrate 1 to the concentrate 4, middlings in the concentrate 1 are separated out, middlings in the concentrate 2 are returned to the concentrate 1, middlings in the concentrate 3 are returned to the concentrate 2, middlings in the concentrate 4 are returned to the concentrate 3, the regrinding, the strong magnetism and the flotation technology are used for recycling fluorite concentration tailings, the secondary dissociation and friction of an ore sample are realized, the mineral particles generate a plurality of new dissociation surfaces, the strong magnetism has a good separation effect on weak magnetism gangue minerals, and the calcium carbonate content is reduced for subsequent operations by adopting a calcium carbonate inhibitor to inhibit calcium carbonate in rough concentration and discharge calcium carbonate for a plurality of times, so that the pressure is reduced.
Example 2:
based on the beneficiation method for regrinding and floating fluorite by the multi-conjoined associated fluorite tailings provided by the first embodiment of the application, the second embodiment of the application provides another beneficiation method for regrinding and floating fluorite by the multi-conjoined associated fluorite tailings. The second embodiment is merely a preferred manner of the first embodiment, and implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings provided in the second embodiment of the present application is different in that:
the method comprises the steps that fluorite tailings after fluorite concentration are recleaning, fluorite grade is 24.17%, particle size distribution is uneven, two ends are more, middle is less, gangue minerals mainly comprise garnet, calcite, common pyroxene, feldspar and the like, settling concentration is carried out on the obtained fluorite tailings after concentration in a concentration tank, underflow ore pulp with concentration of 32.1% obtained through concentration enters a cyclone to carry out pre-grading sand setting, ai Shamo is subjected to regrinding, a regrinding product is combined and enters the concentration underflow cyclone to carry out grading operation, overflow product concentration of 35.25% and fineness of 82.5% are obtained, the overflow product enters a strong magnetic machine with field intensity of 1T to carry out strong magnetic, the strong magnetic adopts a semi-countercurrent magnetic separator, the specific steps are as follows, ore pulp is fed into a separation space from below a tank body in a loose suspension state, the motion direction of ore pulp is basically the same as the magnetic field force direction, the ore particles reach the cylindrical surface with high magnetic field force, the tailings are discharged from tailing holes on a bottom plate, so that the height of an overflow surface can keep the level in the tank body, the obtained non-magnetic product carries out pulp flotation, sodium carbonate 1.8kg/T, glass carbonate 1/DF/T is sequentially added, the concentration of 1.1-80 g/1 g of coal carbonate/15 g/g of coal pulp is obtained, the coarse concentrate is subjected to coarse concentration, and coarse concentration is obtained; the obtained rough concentrate is carefully selected, wherein 200g/t of acidified water glass is added to the concentrate 1, 400g/t of hydrochloric acid, 100g/t of acidified water glass is added to the concentrate 2, 200g/t of hydrochloric acid, 50g/t of acidified water glass is added to the concentrate 3, 100g/t of hydrochloric acid is added to the concentrate 3, middlings and coarse tails of the concentrate 1 are separated together, middlings of the concentrate 2 return to the concentrate 1, and middlings of the concentrate 3 return to the concentrate 2.
The results of the beneficiation test are shown in the following table, and the flotation test index (wt%)
| Product name | Yield rate | Grade of | Recovery rate |
| Magnetic product | 30.21 | 20.25 | 25.31 |
| Fluorite concentrate | 14.56 | 86.54 | 52.13 |
| Tailings | 55.23 | 9.87 | 22.55 |
| Fluorite tailings | 100 | 24.17 | 100 |
Example 3:
based on the beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings provided by the first embodiment of the application, the third embodiment of the application provides another beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings. The third embodiment is merely a preferred manner of the first embodiment, and implementation of the third embodiment does not affect the implementation of the first embodiment alone.
Specifically, the beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings provided in the third embodiment of the present application is different in that:
the method comprises the steps that fluorite tailings after fluorite concentration are recleaning, fluorite grade is 26.25%, particle size distribution is uneven, two ends are more, middle is less, gangue minerals mainly comprise garnet, calcite, common pyroxene, feldspar and the like, settling concentration is carried out on the obtained fluorite tailings after concentration in a concentration tank, underflow ore pulp with concentration of 35.12% obtained through concentration enters a cyclone for presorting sand setting, ai Shamo is subjected to regrinding, a regrinding product is combined and enters the concentration underflow cyclone for classification operation, overflow product concentration 37.63% and fineness of 83.55% are obtained, the overflow product enters a strong magnetic machine with field intensity of 1T for strong magnetic, the strong magnetic is subjected to a semi-countercurrent magnetic separator, the specific steps are as follows, ore pulp enters a separation space from below a tank body in a loose suspension state, the motion direction of ore pulp is basically the same as the magnetic force direction, the ore pulp reaches the cylindrical surface with very high magnetic force, the ore pulp is discharged from a tailing hole on a bottom plate, so that the height of an overflow surface can keep the ore pulp level in the tank body, the obtained non-magnetic product carries out pulp flotation, sodium carbonate 2.1 kg/kg, glass carbonic acid 1.2/1-00 g/DF/00 g of rough concentration inhibitor and coarse concentrate is obtained; the obtained rough concentrate is carefully selected, 220g/t of acidified water glass is added to the concentrate 1, 510g/t of hydrochloric acid, 130g/t of acidified water glass is added to the concentrate 2, 210g/t of hydrochloric acid, 60g/t of acidified water glass is added to the concentrate 3, 110g/t of hydrochloric acid, middling and coarse tailings of the concentrate 1 are separated together, middling of the concentrate 2 returns to the concentrate 1, and middling of the concentrate 3 returns to the concentrate 2.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The beneficiation method for regrinding and floating fluorite by using the multi-conjoined associated fluorite tailings is characterized by comprising the following steps of:
s1, preparing a mineral sample;
s2, concentrating;
s3, grading, namely, putting the graded sand with the concentration of about 50-60% into Ai Shamo for regrinding;
s4, carrying out strong magnetic operation;
s5, fluorite roughing, namely sequentially adding 1-3kg/t of sodium carbonate serving as a regulator, 0.5-1.5kg/t of sodium silicate, 80-250g/t of calcium carbonate inhibitor and 100-300g/t of fluorite collector to carry out slurry mixing to carry out fluorite roughing, so as to obtain fluorite roughing concentrate and fluorite roughing tailings;
s6, fluorite selection;
wherein regrinding realizes secondary dissociation and friction of the ore sample, strong magnetism realizes the separation effect of weak magnetic gangue minerals, and calcium carbonate inhibitor and calcium carbonate discharged from multiple open circuits have synergistic effect in the fluorite flotation of the tailings.
2. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 1, wherein the beneficiation method comprises the steps of: in S1, the ore sample is derived from the associated fluorite tailings of a metal concentrating mill, the concentration is 8-15%, the fineness is-0.074 mm, the content is 65-72%, the fluorite grade is 20-35%, and the calcium carbonate grade is 8-15%.
3. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 1, wherein the beneficiation method comprises the steps of: the specific step of the concentration operation is to concentrate the ore sample obtained in the step S1 in a concentration tank or an inclined plate concentration box to obtain the underflow concentration of 30-40%.
4. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 1, wherein the beneficiation method comprises the steps of: the grading operation comprises the following specific steps of grading the underflow cyclone obtained in the step S2, wherein about 50-60% of graded sand concentration enters Ai Shamo for regrinding.
5. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 4, wherein the beneficiation method comprises the steps of: in Ai Shamo regrinding in the classifying operation, regrinding products are combined, concentrated bottom flow enters a cyclone to carry out classifying operation, the concentration of overflow products is 30-40%, the fineness is-0.074 mm, the content is 80-90%, and sand setting is returned in a closed circuit.
6. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 1, wherein the beneficiation method comprises the steps of: the step of strong magnetic operation is as follows, the overflow product obtained in the step S3 is subjected to strong magnetic operation, and magnetic gangue minerals are obtained through magnetic separation.
7. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 1, wherein the beneficiation method comprises the steps of: and S4, carrying out strong magnetic operation on the overflow product by adopting a 1T strong magnetic machine.
8. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 1, wherein the beneficiation method comprises the steps of: in S1, fluorite has uneven granularity distribution, more ends, less middle and less gangue minerals mainly comprise garnet, calcite, common pyroxene, feldspar and the like.
9. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 1, wherein the beneficiation method comprises the steps of: and (3) carrying out four times of concentration on the fluorite rough concentration concentrate obtained in the step (S5) to obtain final fluorite concentrate, respectively adding 0-300g/t of acidified water glass and 0-600g/t of hydrochloric acid into the concentrate 1 to concentrate 4, separating middlings from the concentrate 1, returning middlings from the concentrate 2 to concentrate 1, returning middlings from the concentrate 3 to concentrate 2, and returning middlings from the concentrate 4 to concentrate 3.
10. The beneficiation method for regrinding and floating fluorite from the multi-conjoined associated fluorite tailings, as set forth in claim 1, wherein the beneficiation method comprises the steps of: in S4, the strong magnetism adopts a semi-countercurrent magnetic separator, and the specific steps are as follows, ore pulp enters a separation space from the lower part of a tank body in a loose suspension state, the movement direction of the ore pulp is basically the same as the magnetic field force direction, the ore particles reach the cylindrical surface with very high magnetic field force, and tailings are discharged from tailing holes on a bottom plate, so that the height of an overflow surface can keep the ore pulp level in the tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311782461.4A CN117772402A (en) | 2023-12-22 | 2023-12-22 | Ore dressing method for regrinding and floating fluorite from multi-intergrowth associated fluorite tailings |
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