CN108554642A - The ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION - Google Patents
The ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION Download PDFInfo
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- CN108554642A CN108554642A CN201810395118.7A CN201810395118A CN108554642A CN 108554642 A CN108554642 A CN 108554642A CN 201810395118 A CN201810395118 A CN 201810395118A CN 108554642 A CN108554642 A CN 108554642A
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- ore
- fluorite
- calcium carbonate
- flotation separation
- hydrochloric acid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
Abstract
The invention discloses a kind of ore-dressing techniques of fluorite calcium carbonate FLOTATION SEPARATION, include the following steps：(1) ore grinding first is carried out to sample ore or directly selects the satisfactory sample ore of granularity；(2) roughing：Use oleic acid or oleic acid saponified as collecting agent, hydrochloric acid is pH regulators, and acidified sodium silicate is carbonic acid calcium inhibitors, carries out roughing flotation processing, flotation pH value control range is adjusted to 57；(3) selected：Again using hydrochloric acid as pH regulators, using acidified sodium silicate as carbonic acid calcium inhibitors, selected processing is carried out to above-mentioned roughing treated ore pulp, concentration times be that at least three times, pH value range control when selected is 57, is finally completed fluorite and calcium carbonate FLOTATION SEPARATION.The process of the present invention can not only effectively remove the calcium carbonate in fluorite ore, fluorite and quartzy class silicate can also be efficiently separated, the discharge of high-alkali ore pulp or more metal ion waste water and the use of polymeric inhibitor are avoided, it is simple for process, efficient, and alleviate the pollution to environment.
Description
Technical field
The present invention relates to a kind of floatation process, more particularly to a kind of FLOTATION SEPARATION work suitable for fluorite ore and calcium carbonate
Skill.
Background technology
The dressing method of fluorite ore, it is not only related with the disseminated grain size size of fluorite mineral, but also with the gangue of its symbiosis
The type of mineral is related.In general, the siliceous height of gangue mineral, calcium are low, relatively good choosing easily obtains the fluorite concentrate of high quality,
High financial profit.Gangue mineral it is siliceous it is low, calcium is high, symbiosis is complicated, and floatability is similar, more difficult separation, and conventional is floating
Choosing method generally uses the substitute of oleic acid and oleic acid for collecting agent, using waterglass, calgon, tannins etc. as tune
Whole dose, but fluorite concentrate quality is low, it is difficult to obtain promising result；And use the carbonic acid in the method removal fluorite concentrate of acidleach
Calcium, of high cost, industrial implementation requires height, is all greatly to test to environment and equipment, it is difficult to realize at the scene.With modern crafts
Development, fluorite concentrate grade and impurity content are required higher and higher.Obtain the fluorite concentrate of high quality, especially fluorite
With the separation of calcium carbonate, it is necessary to have rational sorting process and efficient regime of agent.
Invention content
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, provide one
The ore-dressing technique of kind efficient, environmentally protective, at low cost, good separating effect fluorite-calcium carbonate FLOTATION SEPARATION simple for process.
In order to solve the above technical problems, technical solution proposed by the present invention is a kind of choosing of fluorite-calcium carbonate FLOTATION SEPARATION
Miner's skill, includes the following steps：
(1) ore grinding first is carried out to sample ore or directly selects the satisfactory sample ore of granularity；The effectively dissociation of fluorite monomer is to obtain
The precondition of high-grade and high-recovery index is obtained, only fluorite mineral are had when sample ore ore grinding or under certain granularity
When effect dissociation, the concentrate index obtained just can guarantee.
(2) roughing：Use oleic acid or oleic acid saponified as collecting agent, hydrochloric acid is pH regulators, and acidified sodium silicate is carbonic acid
Calcium inhibitors, carry out roughing flotation processing, and flotation pH value control range is adjusted to 5-7；Fluorite mineral are made to obtain by roughing operation
To efficiently concentrating, while regulating and controlling roughing pH value 5-7, acidified sodium silicate can effectively inhibit the gangue minerals such as calcite, calcite big
Part is removed, and is greatly reduced subsequent fine and is chosen fluorite and calcite separating difficulty.
(3) selected：Again using hydrochloric acid as pH regulators, using acidified sodium silicate as carbonic acid calcium inhibitors, at above-mentioned roughing
Ore pulp after reason carries out selected processing, and concentration times are that at least three times, pH value range control when selected is 5-7, is finally completed
Fluorite and calcium carbonate FLOTATION SEPARATION.Regulate and control slurry pH 5-7 when selected, using acidified sodium silicate to calcite selective depression,
As concentration times increase, the gangue minerals such as calcite in concentrate are gradually removed, it is final to obtain high-grade fluorite concentrate.
The present invention is based on the fluorites effectively dissociated to give mine sample ore feature, using hydrochloric acid as regulator, on the one hand regulates and controls pH values of pulp
On the other hand value can clean mineral surfaces residual medicament, so that mineral is exposed fresh surface, be conducive to the attachment of medicament；Meanwhile
Make collecting agent using the oleic acid with polyhydroxy group is saponified, has both hydrophobicity carboxyl and hydrophilic hydroxy group group, enhancing is caught
The anti acid alkali performance and lower temperature resistance of agent are received, and there is good collecting performance and selectivity.Using acidified sodium silicate in faintly acid
Inhibition feature is had good selectivity to calcite and fluorite in (pH value 5-7) range, fluorite is done step-by-step with sorting number
With efficiently separating for calcite.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：In the step (1), the ore grinding refers to
Raw ore is milled to -0.074mm and accounts for 65%-85%；The satisfactory sample ore of granularity refers to that -0.074mm accounts for 65%-85%.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：In the step (2), roughing handles ore pulp
Floatation concentration is 30%-38%.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：In the step (2), when using oleic acid conduct
When collecting agent, directly added with stoste；When being used as collecting agent using oleic acid is saponified, then it is 5%- to be configured to mass fraction
10% solution addition；The addition of the collecting agent is 300-500g/t.Collecting agent oleic acid in the present invention is saponified, relatively
In conventional oleic acid substitute, have the characteristics that low temperature resistant, antiacid alkali, selectivity and collecting performance are preferable.What this programme used
Oleic acid is saponified, and polyhydroxy group is introduced in its process, makes not only to contain strong collecting ability on oleic acid molecular chain
Carboxylic group also contains hydrophilic hydroxyl group, to increase its anti acid alkali performance and lower temperature resistance, the foam formed in flotation compared with
Crisp, concentrate is mingled with less, and selectivity is good.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：In the step (2), the quality of the hydrochloric acid
Score is 5%-10%, and the addition of hydrochloric acid is 2000-4000g/t；It is furthermore preferred that in the step (3), the matter of the hydrochloric acid
Amount score is 5%-10%, and the addition of hydrochloric acid is 600-1500g/t when selected every time.Why using salt acid for adjusting pH be because
When being dissolved in water for the calcium chloride of generation, will not deteriorate FLOTATION SEPARATION condition, and using sulfuric acid as pH regulators, understand with
Calcium ion effect generates calcium sulfate precipitation in ore pulp, can the cover in mineral surfaces, cause the deterioration of flotation conditions, be unfavorable for point
From；In addition, making pH regulators using hydrochloric acid, mineral surfaces capable of washing remain medicament, so that mineral is exposed fresh surface, are conducive to medicine
The attachment of agent.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：In the step (2), acidified sodium silicate is with matter
It measures the solution form that score is 5%-10% to add, addition 600-2000g/t；In the step (3), acidified sodium silicate with
The solution form that mass fraction is 5%-10% is added, and addition when selected every time is 300-1000g/t.Why using acid
It is acid because of acidified sodium silicate to change waterglass as carbonic acid calcium inhibitors, does not interfere with the entire acid system of ore pulp early period,
And common waterglass is alkaline, can influence ore pulp system, can improve pH value.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：The acidified sodium silicate is sulfuric acid and waterglass
By 1:3-1:4 mass ratio mixes.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：The oleic acid selects industrial rank oleic acid.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：The hydrochloric acid selects industrial rank hydrochloric acid.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：The sulfuric acid selects industrial rank sulfuric acid.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：The waterglass selects industrial rank water glass
Glass.
Enterprise's industrializing implementation is convenient for using technical grade medicament, the actual needs at scene is adapted to, production cost can be reduced.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：In the step (3), the concentration times are
3~5 times, each refining process does not add other medicaments other than demineralizing acid and acidified sodium silicate, the hydrochloric acid and acidifying water glass
The addition of glass is reduced with the increase of concentration times (strictly need not gradually successively decrease, only need on the whole as number increases
Add and keep downward trend).With the increase of concentration times, concentrate grade is gradually increased, and the impurity such as carbonate continuously decrease, required
The dosing wanted should continuously decrease, if medicament uses identical dosage, can inhibit the floating of fluorite, and Fluorite recovery rate is caused to drop
It is low.
The ore-dressing technique of above-mentioned fluorite-calcium carbonate FLOTATION SEPARATION, preferably：Contain fluorite in the sample ore of the step (1)
And calcite, fluorite content are 18%-25%, calcite content 14%-28%.
Compared with the prior art, the advantages of the present invention are as follows：
1. the present invention adjusts agent using hydrochloric acid instead of sulfuric acid, sulfate ion is avoided to be inhaled with calcium ion in ore pulp system
It is attached, calcium sulfate the cover is generated in fluorite mineral surfaces, reduces fluorite floatability.
2. the present invention makees fluorite collecting agent using the oleic acid with hydroxyl and carboxylic group is saponified, soluble easily in water, have both
Good collecting performance and selection performance, antiacid alkali and resistance to low temperature are good.Overcome and is selected under traditional oleic acid low temperature solidification, room temperature
The shortcomings of property is poor.
3. the present invention replaces macromolecule organic inhibitor with acidified sodium silicate, exempts the input of organic matter inhibitor and cause
Flotation water body COD contents increase, and reduce environmental pollution.
4. it is faintly acid that the present invention, which uses hydrochloric acid+acidified sodium silicate medicament system, flotation pulp pH, be conducive to tailing sedimentation
It is clarified with waste water.Avoid the environmental issues such as high alkalinity ore pulp difficulty sedimentation.
5. the present invention process can not only effectively remove the calcium carbonate in fluorite ore, can also efficiently separate fluorite with
Quartzy class silicate avoids the discharge of high-alkali ore pulp or more metal ion waste water and the use of polymeric inhibitor, technique letter
It is single, efficient, and alleviate the pollution to environment.
Specific implementation mode
To facilitate the understanding of the present invention, present invention work more comprehensively, is meticulously described below in conjunction with preferred embodiment,
But the protection scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection domain.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment 1：
It is process object with Hunan fluorite ore, which is fluorite, calcite, quartz, garnet etc.,
Wherein fluorite content 24% or so, calcite content 15% or so, the choosing of fluorite using the present invention and calcium carbonate FLOTATION SEPARATION
Miner's skill is handled, and specifically includes following steps：
(1) ore grinding：Ore grinding first is carried out to raw ore, raw ore is milled to -0.074mm and accounts for 82%；
(2) roughing：Roughing processing, floatation concentration 38% are carried out to the raw ore after above-mentioned steps (1) ore grinding, medicament includes using
Make the modification oleic acid, the hydrochloric acid as pH regulators, the acidified sodium silicate as inhibitor of collecting agent, and the addition of collecting agent
For 300g/t, modified oil acid solutions are 5%-10%, and hydrochloric acid addition is 3000g/t, and the addition of acidified sodium silicate is
1000g/t, flotation pH value range are controlled in 5-7；
(3) selected：Triple cleaning is carried out, each selected medicament only selects hydrochloric acid and acidified sodium silicate, do not add demineralizing acid
With other medicaments other than acidified sodium silicate, flotation pH value range is controlled in 5-7；Wherein primary cleaning when hydrochloric acid addition be
1000g/t, acidified sodium silicate addition are 500g/t；Hydrochloric acid addition when recleaning is 800g/t, acidified sodium silicate
Addition is 500g/t；Hydrochloric acid addition when triple cleaning is 600g/t, the addition of acidified sodium silicate is 300g/t；Three times
After the completion of selected, fluorite and calcium carbonate FLOTATION SEPARATION are completed, selected rear foam is fluorite concentrate.
In above-mentioned ore-dressing technique, modified oleic acid selects industrial rank, hydrochloric acid to select industrial rank hydrochloric acid, the quality point of hydrochloric acid
Number is 10%, and acidified sodium silicate is sulfuric acid and waterglass by 1:3 ratio mixes, and acidified sodium silicate is with mass fraction
5% solution form addition, sulfuric acid select industrial rank sulfuric acid, waterglass to select industrial rank waterglass.
It is as follows that fluorite concentrate index is obtained after the present embodiment FLOTATION SEPARATION：Yield 15.43%, CaF2Grade 97.34%,
CaCO3Grade 1.12%, Fluorite recovery rate 62.34%.
Embodiment 2：
It is process object with Hunan polymetallic ore flotation tailing, tailing essential mineral is containing fluorite, calcite, quartz, stone
Garnet, feldspar etc., wherein fluorite content 19% or so, calcite content 25% or so, fluorite and carbonic acid using the present invention
The ore-dressing technique of calcium FLOTATION SEPARATION is handled, and following steps are specifically included：
(1) due to the process object of the present embodiment be flotation tailing, and its fineness be -0.074mm account for 80% or so, not into
Row is regrinded；
(2) roughing：Roughing processing, floatation concentration 37% are carried out to the raw ore after above-mentioned steps (1) ore grinding, medicament includes using
Make the modification oleic acid, the hydrochloric acid as pH regulators, the acidified sodium silicate as inhibitor of collecting agent, and the addition of collecting agent
For 300g/t, modified oil acid solutions are 5%-10%, and hydrochloric acid addition is 3000g/t, and the addition of acidified sodium silicate is
1000g/t, flotation pH value range are controlled in 5-7；
(3) selected：Carry out four times it is selected, each selected medicament only selects hydrochloric acid and acidified sodium silicate, does not add demineralizing acid
With other medicaments other than acidified sodium silicate, flotation pH value range is controlled in 5-7；Wherein primary cleaning when hydrochloric acid addition be
1000g/t, acidified sodium silicate addition are 750g/t；Hydrochloric acid addition when recleaning is 800g/t, acidified sodium silicate
Addition is 500g/t；Hydrochloric acid addition when triple cleaning is 600g/t, the addition of acidified sodium silicate is 300g/t；Four times
Hydrochloric acid addition when selected is 600g/t, the addition of acidified sodium silicate is 300g/t；After the completion of four times selected, fluorite is completed
With calcium carbonate FLOTATION SEPARATION, selected rear foam is fluorite concentrate.
In above-mentioned ore-dressing technique, modified oleic acid selects industrial rank, hydrochloric acid to select industrial rank hydrochloric acid, the quality point of hydrochloric acid
Number is 10%, and acidified sodium silicate is sulfuric acid and waterglass by 1:3 ratio mixes, and acidified sodium silicate is with mass fraction
5% solution form addition, sulfuric acid select industrial rank sulfuric acid, waterglass to select industrial rank waterglass.
It is as follows that fluorite concentrate index is obtained after the present embodiment FLOTATION SEPARATION：Yield 12.19%, CaF2Grade 94.58%,
CaCO3Grade 2.25%, Fluorite recovery rate 55.38%.
Claims (10)
1. a kind of ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION, which is characterized in that include the following steps：
(1) ore grinding first is carried out to sample ore or directly selects the satisfactory sample ore of granularity；
(2) roughing：Use oleic acid or oleic acid saponified as collecting agent, hydrochloric acid is pH regulators, and acidified sodium silicate presses down for calcium carbonate
Preparation, carries out roughing flotation processing, and flotation pH value control range is adjusted to 5-7；
(3) selected：Again using hydrochloric acid as pH regulators, using acidified sodium silicate as carbonic acid calcium inhibitors, after handling above-mentioned roughing
Ore pulp carry out selected processing, concentration times be that at least three times, pH value range when selected controls as 5-7, is finally completed fluorite
With calcium carbonate FLOTATION SEPARATION.
2. the ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION according to claim 1, it is characterised in that：The step (1)
In, the ore grinding refers to that raw ore is milled to -0.074mm to account for 65%-85%；The satisfactory sample ore of granularity refers to-
0.074mm accounts for the sample ore of 65%-85%.
3. the ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION according to claim 1, it is characterised in that：The step (2)
In, the floatation concentration that roughing handles ore pulp is 30%-38%.
4. the ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION according to claim 1, it is characterised in that：The step (2)
In, when using oleic acid as collecting agent, directly added with stoste；When being used as collecting agent using oleic acid is saponified, then prepare
It is added at the solution that mass fraction is 5%-10%；The addition of the collecting agent is 300-500g/t.
5. the ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION according to claim 1, it is characterised in that：The step (2)
In, the mass fraction of hydrochloric acid is 5%-10%, and the addition of hydrochloric acid is 2000-4000g/t；In the step (3), the matter of hydrochloric acid
Amount score is 5%-10%, and the addition of hydrochloric acid is 600-1500g/t when selected every time.
6. the ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION according to claim 1, it is characterised in that：The step (2)
In, acidified sodium silicate is added with mass fraction for the solution form of 5%-10%, addition 600-2000g/t；The step
(3) in, acidified sodium silicate is added with mass fraction for the solution form of 5%-10%, and addition when selected every time is 300-
1000g/t。
7. according to the ore-dressing technique of any one of the claim 1-6 fluorites-calcium carbonate FLOTATION SEPARATION, it is characterised in that：Institute
It is sulfuric acid with waterglass by 1 to state acidified sodium silicate:3-1:4 mass ratio mixes.
8. the ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION according to claim 7, it is characterised in that：The oleic acid is selected
Industrial rank oleic acid, the hydrochloric acid select industrial rank hydrochloric acid, the sulfuric acid that industrial rank sulfuric acid, the waterglass is selected to select
Industrial rank waterglass.
9. according to the ore-dressing technique of any one of the claim 1-6 fluorites-calcium carbonate FLOTATION SEPARATION, it is characterised in that：Institute
It states in step (3), the concentration times are 3~5 times, and each refining process does not add its other than demineralizing acid and acidified sodium silicate
The addition of his medicament, the hydrochloric acid and acidified sodium silicate is reduced with the increase of concentration times.
10. according to the ore-dressing technique of any one of the claim 1-6 fluorites-calcium carbonate FLOTATION SEPARATION, it is characterised in that：Institute
It states and contains fluorite and calcite in the sample ore of step (1), fluorite content is 18%-25%, calcite content 14%-28%.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110013913A (en) * | 2019-05-15 | 2019-07-16 | 中南大学 | A kind of fluorite floatation process of gradation sizing walkthrough calcium carbonate |
| CN110292991A (en) * | 2019-07-03 | 2019-10-01 | 南华大学 | A kind of fluorite method for concentrating |
| CN110743715A (en) * | 2019-11-21 | 2020-02-04 | 清华大学 | Interface-strengthened fluorite flotation method |
| CN111215247A (en) * | 2020-01-07 | 2020-06-02 | 中南大学 | Inhibitor for high-calcium fluorite direct flotation and flotation method |
| CN111330744A (en) * | 2018-12-19 | 2020-06-26 | 中蓝连海设计研究院有限公司 | Flotation method and pretreatment method for phosphate rock containing calcite |
| CN111960456A (en) * | 2020-08-06 | 2020-11-20 | 六盘水师范学院 | Recycling and treating process for calcium-containing waste acid after acid leaching of fluorite |
| CN114100842A (en) * | 2021-11-02 | 2022-03-01 | 湖南有色郴州氟化学有限公司 | Low-grade fluorite carbon-reducing, silicon-reducing and quality-improving method |
| CN114100843A (en) * | 2021-11-02 | 2022-03-01 | 湖南有色郴州氟化学有限公司 | Low-grade fluorite carbon reduction and quality improvement method |
| WO2024050853A1 (en) * | 2022-09-06 | 2024-03-14 | 湖南水口山有色金属集团有限公司 | Flotation method for separating calcite and quartz |
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| CN110013913A (en) * | 2019-05-15 | 2019-07-16 | 中南大学 | A kind of fluorite floatation process of gradation sizing walkthrough calcium carbonate |
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| CN110743715A (en) * | 2019-11-21 | 2020-02-04 | 清华大学 | Interface-strengthened fluorite flotation method |
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| CN111960456A (en) * | 2020-08-06 | 2020-11-20 | 六盘水师范学院 | Recycling and treating process for calcium-containing waste acid after acid leaching of fluorite |
| CN114100842A (en) * | 2021-11-02 | 2022-03-01 | 湖南有色郴州氟化学有限公司 | Low-grade fluorite carbon-reducing, silicon-reducing and quality-improving method |
| CN114100843A (en) * | 2021-11-02 | 2022-03-01 | 湖南有色郴州氟化学有限公司 | Low-grade fluorite carbon reduction and quality improvement method |
| CN114100842B (en) * | 2021-11-02 | 2023-10-17 | 湖南有色郴州氟化学有限公司 | Low-grade fluorite carbon-reduction silicon-reduction quality-improvement method |
| CN114100843B (en) * | 2021-11-02 | 2023-10-20 | 湖南有色郴州氟化学有限公司 | Low-grade fluorite carbon reduction and quality improvement method |
| WO2024050853A1 (en) * | 2022-09-06 | 2024-03-14 | 湖南水口山有色金属集团有限公司 | Flotation method for separating calcite and quartz |
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