CN114602644B - Regrinding and sorting method for fluorite ore high-grade middlings - Google Patents
Regrinding and sorting method for fluorite ore high-grade middlings Download PDFInfo
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Abstract
The invention provides a regrinding and sorting method for fluorite ore high-grade middlings, which comprises the following steps: grinding and roughing the raw ore to obtain rough concentrate and roughing tailings; the rough concentrate is subjected to primary concentration to obtain concentrate 1 and middling 1, and middling 1 is returned to rough concentration operation; the concentrate 1 is subjected to secondary concentration to obtain concentrate 2 and middling 2, and middling 2 is returned to primary concentration; after the concentrate 2 is concentrated for many times, concentrate N is obtained, concentrate N is used as final concentrate, caF in the final concentrate 2 The grade of (2) is more than or equal to 97 percent; or concentrating concentrate N by open circuit to obtain concentrated product 1 and concentrated product 2, caF in concentrated product 1 2 The grade of (2) is more than or equal to 97 percent, and the CaF in the product 2 is selected 2 Grade of (2)<97%; concentrating the middlings obtained by multiple concentration, regrinding the middlings in the second stage, and returning the middlings to the second stage concentration. The invention effectively avoids the over-crushing of dissociated coarse-grained fluorite, is easy to operate, has small regrind quantity, and is beneficial to improving the concentrate grade.
Description
Technical Field
The invention relates to the technical field of mineral processing, in particular to a regrinding and sorting method for high-grade middlings of fluorite, which is particularly suitable for complex refractory fluorite with uneven fluorite embedding granularity.
Background
The fluorite mineral resource in China is rich, the reserve is 4200 ten thousand t, 13.13% of the global reserve is occupied, and the second place is listed in the world. The fluorite yield in China is the first global, the yield in 2021 is 540 ten thousand t, and the fluorite yield accounts for 62.79% of the global yield. However, the fluorite resource in China has low general grade, is embedded with micro-particles, and is associated with metal ore together, so that the difficulty in sorting and purifying is high. However, with the rapid development of the national semiconductor industry, the demand for fluorite quality of semiconductor raw materials represented by electronic grade hydrogen fluoride is increasing.
In the fluorite ore dressing process, the 'stage grinding, multi-stage concentrate and middling return sequentially in turn' is the main flow process of fluorite flotation. As shown in fig. 1, in the existing process, crude ore is subjected to primary coarse grinding and roughing to obtain rough concentrate and roughing tailings; the coarse concentrate is subjected to secondary regrinding and then is subjected to separation to obtain a fine selection 1 and a middling 1, and the fine selection 1 is subjected to multi-section fine selection to obtain a final concentrate and multi-section middling; the roughing tailings are subjected to two-stage scavenging to obtain scavenging concentrate 1, scavenging concentrate 2 and tailings, middling 1 and scavenging concentrate 1 return to roughing, and the multi-stage middling and scavenging concentrate 2 return sequentially. The method has poor adaptability to fluorite ore sorting with uneven embedded granularity, coarse-size fluorite ore is easy to excessively crush in ore grinding, fine-size fluorite ore is difficult to dissociate, the quality of concentrate is poor, and the regrinding amount is large.
Disclosure of Invention
The invention provides a fluorite ore high-grade middling regrinding separation method, which solves the problems of low fluorite ore separation efficiency and low concentrate grade of uneven embedded granularity in the prior art.
The technical scheme of the invention is realized as follows: a fluorite ore high-grade middling regrinding and sorting method comprises the following steps:
(1) Grinding raw ore for one period to obtain an ore grinding product, and carrying out roughing operation on the ore grinding product to obtain rough concentrate and roughing tailings;
(2) The roughing tailings obtained in the step (1) are subjected to one-stage scavenging to obtain scavenging concentrate 1 and scavenging concentrate, the scavenging concentrate is subjected to two-stage scavenging to obtain scavenging concentrate 2 and final tailings, the scavenging concentrate 1 is returned to the roughing operation in the step (1), and the scavenging concentrate 2 is returned to the one-stage scavenging;
(3) The rough concentrate obtained in the step (1) is subjected to primary concentration to obtain concentrate 1 and middling 1, and middling 1 is returned to the rough concentration operation in the step (1);
(4) The concentrate 1 obtained in the step (3) is subjected to secondary concentration to obtain concentrate 2 and middling 2, and middling 2 is returned to primary concentration in the step (3);
(5) After the concentrate 2 obtained in the step (4) is subjected to repeated concentration, concentrate N is obtained, the concentrate N is used as final concentrate, and CaF in the final concentrate 2 The grade of (2) is more than or equal to 97 percent; or the concentrate N is selected by an open circuit to obtain a selected product 1 and a selected product 2,beneficiating CaF in product 1 2 The grade of (2) is more than or equal to 97 percent, and the CaF in the product 2 is selected 2 Grade of (2)<97％；
(6) Concentrating the middlings obtained by the repeated concentration in the step (5), regrinding the middlings in the second stage, and returning the middlings to the second stage concentration in the step (4).
Further, in the step (1), 2000-2500 g/t of sodium carbonate, 400-800 g/t of water glass, 40-80 g/t of oxidized paraffin soap and 40-80 g/t of oleic acid are added in roughing operation, wherein when concentrate N is the final concentrate, the dosage of oxidized paraffin soap is 40-50 g/t, and the dosage of oleic acid is 40-50 g/t; when the concentrate N is selected through open circuit, the dosage of the oxidized paraffin soap is 60-80 g/t, and the dosage of the oleic acid is 50-80 g/t.
Further, in the step (3), 10-20 g/t of oleic acid is added in one stage of fine selection.
Further, in the step (4), adding 30-80 g/t of water glass, 10-30 g/t of oxidized paraffin soap and 10-30 g/t of oleic acid into the second-stage concentration, wherein the dosage of oleic acid is 10-20 g/t when the concentrate N is the final concentrate; when the concentrate N is concentrated by open circuit, the dosage of oleic acid is 20-30 g/t.
Further, the concentrate 2 obtained in the step (4) is subjected to three-stage concentration, four-stage concentration, five-stage concentration and six-stage concentration in sequence to obtain concentrate N, and water glass is added into the four-stage concentration for 30-60 g/t.
Further, adding water glass 50-100 g/t into the open-circuit concentration to obtain a concentrate product 1 and a concentrate product 2.
Further, in the step (2), 10-20 g/t of oxidized paraffin soap and 10-20 g/t of oleic acid are added in the first-stage sweeping and the second-stage sweeping.
Further, in the step (1), after one-stage grinding, the fineness of the ground product is-0.074 mm and the content is 55% -60%.
Further, in the step (6), the fineness of the middling after concentration and secondary regrinding is 75% -80% of the content of minus 0.043 mm.
The invention has the beneficial effects that:
the invention adopts multi-stage concentration to obtain middlings for regrinding, namely, the fine-particle embedded fluorite is regrinded independently, the pertinence is strong, the over-crushing of the dissociated coarse-grain fluorite is effectively avoided, the operation is easy, the regrinding amount is small, and the grade of fluorite concentrate is improved; the middlings obtained by multi-stage concentration are high-grade middlings, and very fine minerals or clay minerals in the high-grade middlings are fewer, so that the ore pulp has a high mineral sedimentation speed during concentration, is close to the concentrate concentration speed, and is easy to realize.
Concentrate N is selected through open-circuit separation to obtain a concentrate product 1 and a concentrate product 2, the concentrate grade and the yield of the concentrate product 1 and the concentrate product 2 can be adjusted at any time according to the production condition, the grade of the concentrate product 1 is more than 97%, the grade of the concentrate product 2 is more than 93%, the total recovery rate of the two concentrates is more than 90% as a good index, overgrinding of dissociated fluorite is avoided, the regrind amount is small, the high-grade middling concentration speed is high, the operation is easy, and the fluorite concentrate grade and recovery rate are remarkably improved. In addition, the total value of the two concentrate products is higher than that of a single concentrate product (final concentrate), so that the economic benefit of enterprises is effectively improved, the fluorite content in tailings is greatly reduced, the discharge amount of the tailings is reduced, and the problem that some tailings containing fluorite are provided with a single recleaning process is avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a conventional process flow diagram;
FIG. 2 is a flow chart of the sorting process of examples 2 and 4;
fig. 3 is a flow chart of the sorting process of example 1 and example 3.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments 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 any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 2, the regrinding and sorting method for the fluorite ore high-grade middlings comprises the following steps:
(1) Grinding raw ore for one period to obtain an ore grinding product, wherein the fineness of the ore grinding product is-0.074 mm, and the content of the ore grinding product is 55% -60%, and rough concentrate and rough tailings are obtained after rough concentration operation of the ore grinding product; in the roughing operation, 2000-2500 g/t of pH regulator sodium carbonate, 400-800 g/t of gangue inhibitor sodium silicate and mixed collector (40-80 g/t of oxidized paraffin soap and 40-80 g/t of oleic acid) are sequentially added, wherein when concentrate N is selected as the final concentrate, the dosage of oxidized paraffin soap is 40-50 g/t, and the dosage of oleic acid is 40-50 g/t; when the concentrate N is selected through open-circuit, the dosage of oxidized paraffin soap is 60-80 g/t, and the dosage of oleic acid is 50-80 g/t;
(2) The roughing tailings obtained in the step (1) are subjected to one-stage scavenging to obtain scavenging concentrate 1 and scavenging concentrate, the scavenging concentrate is subjected to two-stage scavenging to obtain scavenging concentrate 2 and final tailings, the scavenging concentrate 1 is returned to the roughing operation in the step (1), and the scavenging concentrate 2 is returned to the one-stage scavenging; adding a mixed collector (10-20 g/t of oxidized paraffin soap and 10-20 g/t of oleic acid) into the first-stage sweeping and the second-stage sweeping;
(3) The rough concentrate obtained in the step (1) is subjected to primary concentration to obtain concentrate 1 and middling 1, and middling 1 is returned to the rough concentration operation in the step (1); adding 10-20 g/t oleic acid into one-stage selection;
(4) The concentrate 1 obtained in the step (3) is subjected to secondary concentration to obtain concentrate 2 and middling 2, and middling 2 is returned to primary concentration in the step (3); adding water glass 30-80 g/t and mixed collector (oxidized paraffin soap 10-30 g/t and oleic acid 10-30 g/t) in the second stage of concentration, wherein the dosage of oleic acid is 10-20 g/t when concentrate N is the final concentrate; when the concentrate N is selected through open circuit, the dosage of oleic acid is 20-30 g/t;
(5) The concentrated concentrate 2 obtained in the step (4) is subjected to repeated concentration to obtain the final concentrate;
(6) Concentrating the middlings obtained by the repeated concentration in the step (5), regrinding the middlings in the second stage, and returning the middlings to the second stage concentration in the step (4), wherein the fineness of the regrind in the second stage is 75% -80% of the content of minus 0.043 mm.
The concentrate 2 obtained in the step (4) is subjected to three-section concentration, four-section concentration, five-section concentration and six-section concentration in sequence to obtain the final concentrate, and water glass is added into the four-section concentration for 30-60 g/t.
As shown in FIG. 3, water glass 50-100 g/t is added into the final concentrate to obtain a concentrate product 1 and a concentrate product 2.
The following describes the practice of the invention in connection with specific embodiments:
example 1
The fluorite raw ore of the embodiment is obtained from a fluorite ore of Henan, and the main minerals include fluorite and quartz, and a small amount of potassium feldspar, mica, carbonate and the like. The main components of the ore are as follows: caF (CaF) 2 35.66％，SiO 2 49.18％，TFe 1.37％，CaCO 3 0.73％。
As shown in FIG. 3, the primary coarse grinding fineness of the raw ore is 55% of the content of-0.074 mm, the ground ore product is subjected to primary coarse grinding, pH regulator sodium carbonate 2000g/t, gangue inhibitor water glass 500g/t are sequentially added in the primary coarse grinding, mixed collector oxidized paraffin soap 70g/t and oleic acid 60g/t are respectively added in the primary scavenging and the secondary scavenging, mixed collector oxidized paraffin soap 15g/t and oleic acid 15g/t are respectively added in the primary grinding, collector oleic acid 15g/t is added in the primary grinding, inhibitor water glass 80g/t is added in the secondary grinding, mixed collector oxidized paraffin soap 15g/t and oleic acid 30g/t are sequentially added in the secondary grinding, inhibitor water glass 50g/t is added in the secondary grinding, inhibitor water glass 100g/t is added in the secondary grinding (open-circuit grinding), the middlings of the secondary grinding are combined and concentrated, the fineness of the secondary grinding is-0.043 mm, and the content is 78.33%, and the test results are shown in Table 1.
Table 1 example 1 sorting test results
| Product name | Yield (%) | CaF 2 Grade (%) | CaF 2 Recovery (%) |
| Concentrate product 1 | 31.66 | 97.32 | 86.15 |
| Concentrate product 2 | 2.96 | 93.12 | 7.71 |
| Final tailings | 65.38 | 3.36 | 6.14 |
| Raw ore | 100.00 | 35.76 | 100.00 |
Example 2
This embodiment is substantially the same as embodiment 1 except that: as shown in FIG. 2, the primary ore has a primary coarse grinding fineness of-0.074 mm and a content of 55%, pH regulator sodium carbonate 2500g/t, gangue inhibitor sodium silicate 500g/t, mixed collector oxidized paraffin soap 40g/t and oleic acid 50g/t, mixed collector oxidized paraffin soap 10g/t and oleic acid 10g/t in the primary and secondary sweeps respectively, collector oleic acid 15g/t in the primary dressing, inhibitor sodium silicate 70g/t in the secondary dressing, mixed collector oxidized paraffin soap 15g/t and oleic acid 15g/t, inhibitor sodium silicate 60g/t in the four-stage dressing, and secondary regrinding fineness of-0.043 mm and a content of 78.86% are sequentially added, and test results are shown in Table 2.
Table 2 example 2 sorting test results
| Product name | Yield (%) | CaF 2 Grade (%) | CaF 2 Recovery (%) |
| Final concentrate | 32.20 | 97.48 | 88.02 |
| Final tailings | 67.80 | 6.30 | 11.98 |
| Raw ore | 100.00 | 35.66 | 100.00 |
Comparative example 1
This embodiment is substantially the same as embodiment 1 except that: the conventional screening test flow is shown in figure 1, the primary coarse grinding fineness of raw ore is-0.074 mm and content is 55%, pH value regulator sodium carbonate 2000g/t, gangue inhibitor sodium silicate 500g/t are sequentially added into the ground ore product, mixed collector oxidized paraffin soap 60g/t and oleic acid 60g/t are respectively added into the primary cleaning and secondary cleaning, mixed collector oxidized paraffin soap 10g/t and oleic acid 10g/t are respectively added into the primary cleaning and secondary cleaning, inhibitor sodium silicate 100g/t is added into the primary cleaning, mixed collector oxidized paraffin soap 30g/t and oleic acid 50g/t are respectively added into the primary cleaning and secondary cleaning, inhibitor sodium silicate 80g/t is added into the secondary cleaning, collector oxidized paraffin soap 10g/t and secondary regrinding fineness is-0.043 mm and content is 76.23%, and the test result is shown in table 3.
TABLE 3 comparative example 1 conventional screening test results
| Product name | Yield (%) | CaF 2 Grade (%) | CaF 2 Recovery (%) |
| Final concentrate | 33.02 | 96.36 | 88.16 |
| Final tailings | 66.98 | 6.38 | 11.84 |
| Raw ore | 100.00 | 36.09 | 100.00 |
As can be seen from tables 1 to 3, the final concentrate CaF obtained in the conventional classification process 2 The grade is less than 97 percent, and the first-grade quality requirement of fluorite fine powder is not met; example 2 concentrate CaF after the regrinding process with high grade middlings, with substantially uniform fluorite recovery 2 The grade is improved by 1.12 percent, and the concentrate meets the first-grade quality requirement of fluorite fine powder; by adopting the separation method of the embodiment 1 of the invention, the final concentrate is beneficiated to obtain a concentrate product 1 and a concentrate product 2, and the concentrate product 1CaF 2 The grade is more than 97%, the first-grade quality requirement of fluorite fine powder is met, the concentrate product 2 meets the fourth-grade quality requirement of fluorite fine powder, the recovery rate of the concentrate product 1 is slightly lower than that of the embodiment 2 and the comparative example 1, but the total recovery rate of the two concentrate products is higher than 5 percent, and the CaF of tailings is obviously reduced 2 Grade.
Example 3
The fluorite raw ore of the embodiment is obtained from a fluorite ore of Hunan, and the main minerals include fluorite and quartz, and a small amount of feldspar, mica and the like. The main components of the ore are as follows: caF (CaF) 2 41.58％，SiO 2 45.27％，TFe 0.36％，CaCO 3 0.65％。
As shown in FIG. 3, the primary ore has a primary coarse grinding fineness of-0.074 mm and a content of 60%, pH regulator sodium carbonate 2000g/t, gangue inhibitor sodium silicate 500g/t, mixed collector oxidized paraffin soap 70g/t and oleic acid 70g/t, mixed collector oxidized paraffin soap 15g/t and oleic acid 15g/t in the primary and secondary sweeps respectively, inhibitor sodium silicate 80g/t in the secondary beneficiation, mixed collector oxidized paraffin soap 20g/t and oleic acid 30g/t, inhibitor sodium silicate 60g/t in the four-stage beneficiation, inhibitor sodium silicate 100g/t in the seven-stage beneficiation and a secondary regrinding fineness of-0.043 mm and a content of 77.28%, and test results are shown in Table 4.
Table 4 example 3 sorting test results
Example 4
This embodiment is substantially the same as embodiment 3 except that: as shown in FIG. 2, the primary ore has a primary coarse grinding fineness of-0.074 mm and a content of 60%, pH regulator sodium carbonate 2000g/t, gangue inhibitor sodium silicate 500g/t, mixed collector oxidized paraffin soap 50g/t and oleic acid 50g/t are sequentially added into the ground ore product, mixed collector oxidized paraffin soap 10g/t and oleic acid 10g/t are respectively added in the primary cleaning and the secondary cleaning, collector oleic acid 15g/t is added in the primary cleaning, inhibitor sodium silicate 80g/t is added in the secondary cleaning, mixed collector oxidized paraffin soap 15g/t and oleic acid 20g/t are sequentially added in the four-stage cleaning, inhibitor sodium silicate 50g/t and secondary regrinding fineness of-0.043 mm and a content of 76.89% are respectively added in the primary cleaning and the secondary cleaning, and test results are shown in Table 5.
TABLE 5 example 4 sorting test results
| Product name | Yield (%) | CaF 2 Grade (%) | CaF 2 Recovery (%) |
| Final concentrate | 39.02 | 97.12 | 91.10 |
| Final tailings | 60.98 | 6.07 | 8.90 |
| Raw ore | 100.00 | 41.60 | 100.00 |
Comparative example 2
This embodiment is substantially the same as embodiment 3 except that: the conventional screening test flow is shown in figure 1, the primary coarse grinding fineness of raw ore is-0.074 mm content 60%, pH value regulator sodium carbonate 2000g/t, gangue inhibitor sodium silicate 500g/t are sequentially added into the ground ore product, mixed collector oxidized paraffin soap 60g/t and oleic acid 70g/t are respectively added into scavenging 1 and scavenging 2, mixed collector oxidized paraffin soap 10g/t and oleic acid 10g/t are respectively added into coarse concentrate, inhibitor sodium silicate 100g/t is added into coarse concentrate, mixed collector oxidized paraffin soap 40g/t and oleic acid 50g/t are respectively added into fine 3, inhibitor sodium silicate 80g/t is added into fine 3, collector oxidized paraffin soap 10g/t and secondary regrinding fineness is-0.043 mm content 79.02%, and test results are shown in table 6.
TABLE 6 example 2 conventional screening test results
| Product name | Yield (%) | CaF 2 Grade (%) | CaF 2 Recovery (%) |
| Final concentrate | 37.63 | 96.07 | 88.47 |
| Final tailings | 62.37 | 7.56 | 11.53 |
| Raw ore | 100.00 | 40.87 | 100.00 |
As can be seen from tables 4 to 6, the concentrate CaF obtained in the conventional classification flow 2 The grade is less than 97 percent, and the first-grade quality requirement of fluorite fine powder is not met; example 4 final concentrate CaF after regrinding with high grade middlings 2 The grade is improved to more than 97%, the recovery rate is improved by 2.63%, and the concentrate meets the three-grade quality requirement of the chemical industry acid grade fluorite powder concentrate; the concentrate product 1CaF was obtained by regrinding the high grade middlings from example 3, two product separation processes 2 The grade is more than 97%, the first-grade quality requirement of fluorite fine powder is met, the concentrate product 2 meets the fourth-grade quality requirement of fluorite fine powder, the total recovery rate of the two concentrate products is 6.75 percent higher than that of the conventional process, the total recovery rate of the two concentrate products is 4.12 percent higher than that of the high-grade middling regrind process, and the CaF of tailings is obviously reduced 2 And the grade is improved, and the economic benefit of enterprises is improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (3)
1. The regrinding and sorting method for the fluorite ore high-grade middlings is characterized by comprising the following steps of:
(1) Grinding raw ore for one period to obtain an ore grinding product, and carrying out roughing operation on the ore grinding product to obtain rough concentrate and roughing tailings;
(2) The roughing tailings obtained in the step (1) are subjected to one-stage scavenging to obtain scavenging concentrate 1 and scavenging concentrate, the scavenging concentrate is subjected to two-stage scavenging to obtain scavenging concentrate 2 and final tailings, the scavenging concentrate 1 is returned to the roughing operation in the step (1), and the scavenging concentrate 2 is returned to the one-stage scavenging;
(3) The rough concentrate obtained in the step (1) is subjected to primary concentration to obtain concentrate 1 and middling 1, and middling 1 is returned to the rough concentration operation in the step (1);
(4) The concentrate 1 obtained in the step (3) is subjected to secondary concentration to obtain concentrate 2 and middling 2, and middling 2 is returned to primary concentration in the step (3);
(5) After the concentrate 2 obtained in the step (4) is subjected to repeated concentration, concentrate N is obtained, the concentrate N is used as final concentrate, and CaF in the final concentrate 2 The grade of (2) is more than or equal to 97 percent; or concentrating concentrate N by open circuit to obtain concentrated product 1 and concentrated product 2, caF in concentrated product 1 2 The grade of (2) is more than or equal to 97 percent, and the CaF in the product 2 is selected 2 Grade of (2)<97％；
(6) Concentrating middlings obtained after the repeated concentration in the step (5), regrinding the middlings in the second stage, and returning the middlings to the second stage concentration in the step (4);
in the step (1), after primary grinding, the fineness of the ground product is-0.074 mm and the content is 55% -60%;
in the step (1), 2000-2500 g/t of sodium carbonate, 400-800 g/t of sodium silicate, 40-80 g/t of oxidized paraffin soap and 40-80 g/t of oleic acid are added in the roughing operation;
in the step (2), 10-20 g/t of oxidized paraffin soap and 10-20 g/t of oleic acid are added in both the first-stage scavenging and the second-stage scavenging;
in the step (3), oleic acid 10-20 g/t is added in one stage of fine selection;
in the step (4), water glass 30-80 g/t, oxidized paraffin soap 10-30 g/t and oleic acid 10-30 g/t are added in the second-stage selection;
in the step (6), the fineness of the middling after concentration and secondary regrinding is 75% -80% of the content of minus 0.043 mm.
2. The method for regrinding and sorting fluorite ore high-grade middlings according to claim 1, wherein the concentrate 2 obtained in the step (4) is subjected to three-stage concentration, four-stage concentration, five-stage concentration and six-stage concentration in sequence to obtain concentrate N, and water glass is added into the four-stage concentration for 30-60 g/t.
3. The method for regrinding and sorting fluorite ore high-grade middlings according to claim 1, wherein in the step (5), water glass is added in an open-circuit concentration by 50-100 g/t to obtain a concentrate product 1 and a concentrate product 2.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4288315A (en) * | 1979-03-26 | 1981-09-08 | Allied Corporation | Benefication of fluorspar ores |
| JP2006150196A (en) * | 2004-11-26 | 2006-06-15 | Mitsui Mining & Smelting Co Ltd | Powder concentration method for separating abrasive powder from indium oxide based scrap powder |
| RU2397816C1 (en) * | 2009-07-15 | 2010-08-27 | Совместное предприятие в форме закрытого акционерного общества "Изготовление, внедрение, сервис" | Method for flotation concentration of sulfide ores |
| CN106076605A (en) * | 2016-08-05 | 2016-11-09 | 中国地质科学院郑州矿产综合利用研究所 | Fluorite ore scavenging, selecting, desliming and sorting method |
| CN107638959A (en) * | 2017-08-08 | 2018-01-30 | 中国地质科学院郑州矿产综合利用研究所 | Flotation method for inhibiting silicate gangue minerals in fluorite ores |
| CN109107770A (en) * | 2018-08-15 | 2019-01-01 | 浙江天磨矿业科技有限公司 | A kind of regrinding and reconcentration method recycling fluorite from tailing |
| CN110013913A (en) * | 2019-05-15 | 2019-07-16 | 中南大学 | A kind of fluorite floatation process of gradation sizing walkthrough calcium carbonate |
| CN110560257A (en) * | 2019-09-17 | 2019-12-13 | 长沙三博矿业科技有限公司 | Beneficiation method for recovering associated fluorite from multi-metal tailings |
| CN111167596A (en) * | 2019-12-30 | 2020-05-19 | 安徽工业大学 | Method for comprehensively recovering rare earth minerals and fluorite in bastnaesite treatment process |
| CN111632747A (en) * | 2020-04-28 | 2020-09-08 | 西北矿冶研究院 | Beneficiation method for silicate and carbonate type fluorite ore |
| CN111715398A (en) * | 2020-06-24 | 2020-09-29 | 四川省地质矿产勘查开发局成都综合岩矿测试中心 | Method for efficiently recovering rare earth, fluorite and barite from rare earth tailings |
| CN113522517A (en) * | 2021-07-15 | 2021-10-22 | 中化地质矿山总局地质研究院 | Fluorite ore beneficiation method |
| WO2021212595A1 (en) * | 2020-04-22 | 2021-10-28 | 广东省科学院资源综合利用研究所 | Beneficiation method for stepwise classification and comprehensive recovery of valuable elements in primary vein platinum mine tailings |
-
2022
- 2022-03-14 CN CN202210247361.0A patent/CN114602644B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4288315A (en) * | 1979-03-26 | 1981-09-08 | Allied Corporation | Benefication of fluorspar ores |
| JP2006150196A (en) * | 2004-11-26 | 2006-06-15 | Mitsui Mining & Smelting Co Ltd | Powder concentration method for separating abrasive powder from indium oxide based scrap powder |
| RU2397816C1 (en) * | 2009-07-15 | 2010-08-27 | Совместное предприятие в форме закрытого акционерного общества "Изготовление, внедрение, сервис" | Method for flotation concentration of sulfide ores |
| CN106076605A (en) * | 2016-08-05 | 2016-11-09 | 中国地质科学院郑州矿产综合利用研究所 | Fluorite ore scavenging, selecting, desliming and sorting method |
| CN107638959A (en) * | 2017-08-08 | 2018-01-30 | 中国地质科学院郑州矿产综合利用研究所 | Flotation method for inhibiting silicate gangue minerals in fluorite ores |
| CN109107770A (en) * | 2018-08-15 | 2019-01-01 | 浙江天磨矿业科技有限公司 | A kind of regrinding and reconcentration method recycling fluorite from tailing |
| CN110013913A (en) * | 2019-05-15 | 2019-07-16 | 中南大学 | A kind of fluorite floatation process of gradation sizing walkthrough calcium carbonate |
| CN110560257A (en) * | 2019-09-17 | 2019-12-13 | 长沙三博矿业科技有限公司 | Beneficiation method for recovering associated fluorite from multi-metal tailings |
| CN111167596A (en) * | 2019-12-30 | 2020-05-19 | 安徽工业大学 | Method for comprehensively recovering rare earth minerals and fluorite in bastnaesite treatment process |
| WO2021212595A1 (en) * | 2020-04-22 | 2021-10-28 | 广东省科学院资源综合利用研究所 | Beneficiation method for stepwise classification and comprehensive recovery of valuable elements in primary vein platinum mine tailings |
| CN111632747A (en) * | 2020-04-28 | 2020-09-08 | 西北矿冶研究院 | Beneficiation method for silicate and carbonate type fluorite ore |
| CN111715398A (en) * | 2020-06-24 | 2020-09-29 | 四川省地质矿产勘查开发局成都综合岩矿测试中心 | Method for efficiently recovering rare earth, fluorite and barite from rare earth tailings |
| CN113522517A (en) * | 2021-07-15 | 2021-10-22 | 中化地质矿山总局地质研究院 | Fluorite ore beneficiation method |
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