CN103785523A - Coal slime flotation and recycling method - Google Patents
Coal slime flotation and recycling method Download PDFInfo
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Abstract
The invention relates to the technical field of mineral production, in particular to a coal slime flotation and recycling method. The technical process of the method includes the steps of crushing by a ball mill, mixing by a mixer, performing flotation, separating by a filter press, subjecting crude products to cooling and slag removal to obtain finished coal, and mixing recycled products to obtain finished products or cement. The method has the advantages that the problems, such as low slime recovery rate, high water content, inconvenience in collection and poor environmental protection benefit, in the coal slime recovery process are solved.
Description
Technical field
The present invention relates to mineral production technical field, espespecially a kind of coal slime flotation and the method that is recycled.
Background technology
The semi-solid thing of the moisture formation of coal slime general reference coal dust, is a kind of product in coal production process, and according to the difference of the difference of kind and formation mechanism, its nature difference is very large, and utilizability also has bigger difference, and its kind is numerous, of many uses.Coal slime has following characteristics: 1, fine size, fraction of particle are many, are especially less than 200 object particulates and account for 70%～90%.2, retentiveness is strong, and moisture is high.Coal slime through disc vacuum filter dehydration is moisture generally more than 30%; The coal slime of folding belt filter dehydration is moisture 26%～29%; The coal slime of filter press dehydration is moisture 20%～24%.3, content of ashes is high, and caloric value is lower.Coal slime can be divided into three classes by the height of ash content and calorific value: low culm plaster is divided into 20%～32%, calorific value is 12.5～20MJ/kg; Middle culm plaster is divided into 30%～55%, and calorific value is 8.4～12.5MJ/kg; Dirty coal plaster divides >55%, and calorific value is 3.5～6.3MJ/kg.4, stickiness is larger.There is many unfavorable conditions such as high-moisture, high viscosity, high retentiveness and low heat value due to coal slime, be difficult to realize commercial Application, kept outside of the door by power consumer for a long time, sell as main outlet take civilian.Since reform and opening-up, national economy has had swift and violent development, and coal production leaps to the first in the world, and great changes have also occurred Market Situation.The depth & wideth of Coal dressing is all in fast development, and the output of coal slime obviously rises, and the comprehensive utilization of coal slime has become problem in the urgent need to address.There is many unfavorable conditions such as high-moisture, high viscosity, high retentiveness and low heat value due to coal slime, be difficult to realize commercial Application, kept outside of the door by power consumer for a long time, sell as main outlet take civilian.Since reform and opening-up, national economy has had swift and violent development, and coal production leaps to the first in the world, and great changes have also occurred Market Situation.The depth & wideth of Coal dressing is all in fast development, and the output of coal slime obviously rises, and the comprehensive utilization of coal slime has become problem in the urgent need to address.But owing to generally containing more clay class mineral in coal slime, moisture is higher in addition, granularmetric composition is thin, so most of coal slime stickiness is large, what have also has certain mobility.Due to these characteristics, cause stacking, storage and the transportation of coal slime all more difficult.Especially in the time storing up, its form is extremely unstable, meets water and runs off, and air-dryly flies upward.Result has not only been wasted valuable coal resources, and has caused serious environmental pollution, has sometimes even restricted the normal production of coal washery, becomes comparatively stubborn problem of one of coal preparation plant.Therefore, the technique of washup at present and recycling will become more and more important, directly have influence on the quantum of output in colliery.At present, China's coal washing industry generally adopts jigging unit or dense medium unit to carry out coal separation, and its mine tailing (coal slime) generally adopts flotation device or flotation column to reclaim mine tailing cleaned coal.Owing to reclaiming the technical matters of mine tailing, the configuration imperfection of equipment, for the thinner part of contained raw meal particle size in coal slime, the technique that employing is carried out sorting according to the difference of the physicochemical properties of mineral surfaces produces little effect, cause the waste to coal resources, also brought larger economic loss to coal washing industry simultaneously.
The documents patent No. is that the Chinese patent " coal slime recovery method and online directly recovery process in coal washery " of CN200910051925.8 discloses coal slime recovery method and online directly recovery process in a kind of coal washery, wash mixed coal, mixed method that material such as spoil does not stir by adding in coal slime, make it fully to mix with coal slime, untie coal slime group, form flowable loose media; Utilize and wash mixed coal absorption portion moisture of coal fines simultaneously; In order to reduce as far as possible the moisture of coal slime, can before blending, carry out to coal slime steam or sootiness and dry, also can after blending, carry out in coal slime steam or flue gas drying.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of coal slime removal process solution coal slime rate of recovery low, the coal slime flotation that moisture is high, inconvenience is collected and environmental benefit is poor and the method that is recycled.
For solving the problems of the technologies described above, the invention provides a kind of coal slime flotation method, it is characterized in that, comprise following technique:
(1) floating agent is fully mixed according to 1:2 with mixer by medicament barrel with treatment and purification water, described floating agent is made up of 10 ~ 30% polyaluminium chlorides and kerosene, described polyaluminium chloride chemical molecular formula is [AL2 (OH) nCL6-n] m, 1≤n≤5 in formula, its composition summation of m≤10 is 100%, described floating agent composition comprises secondary octanol C8H18O, n-butanol CH3CH2CH2CH2OH and kerosene, and its composition summation is 100%; Raw ore is delivered to ball mill by batcher and pulverizes, and described both fully stir all by agitator again, untie coal slime group, forms the raw material with mobility;
(2) raw material is roughly selected by flotation device, makes feed coal mineral water concentration >=30%, and then selected by flotation device, makes feed coal mineral water concentration≤25%;
(3) be 0.2 ~ 1.5 MPa removal filter residue by filter press at operating pressure by the output article in (2) step;
(4) by rough coal and the coal tailings separated in (3) step, rough coal is that purity is not less than 99.5% carbon dust, and the spoil that in coal tailings, mass content is 25 ~ 80% absorbs the part moisture in carbon dust by spoil simultaneously;
(5) by the cleaned coal obtaining in (4) step, choose ashes and readymade coal by electric arc furnaces vacuum metling, readymade coal is directly put in storage.
A kind of coal slime ashes method that is recycled, is characterized in that, comprises following technological process:
A, isolated ashes and coal tailings in (3) step are stirred mutually, add water simultaneously in the process stirring, the mixture quality ratio of water and tailings and ashes is 2:1;
B, the mixture obtaining in a step is concentrated by thickener, thickening temperature is at 30 ~ 50 ℃, obtains enriched mixture after concentrated by 3 hours;
C, the enriched mixture obtaining is passed through to dryer again at 100 ~ 150 ℃ of temperature, dried and obtain mixture crystal through 2 hours in b step;
D, the mixture crystal obtaining in c step is again pulverized finally by floatation process and is separated out and can utilizes raw material and reclaim raw material by ball mill.
As a further improvement on the present invention, described recovery material composition is that calcium carbonate and all the other can not be utilized impurity.
As a further improvement on the present invention, described calcium carbonate mass component is at least 95%.
As a further improvement on the present invention, described calcium carbonate is by making cement with grog, composite material hybrid process.
The present invention compared with prior art has following beneficial effect:
1., moisture of coal fines is low, be convenient to collect and environmental benefit does, technological process is simultaneously simple;
2., coal slime organic efficiency is high, flotation efficiency is high, precision is high.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated, but never in any form the present invention is limited, and any conversion of doing based on training centre of the present invention, all falls into protection scope of the present invention.
Fig. 1 is schematic flow sheet of the present invention.
The specific embodiment
embodiment 1
A kind of coal slime flotation as shown in Figure 1 and the method that is recycled, it is characterized in that, comprise following technique: floating agent is fully mixed according to 1:2 with mixer by medicament barrel with treatment and purification water, described floating agent is made up of 10 ~ 30% polyaluminium chlorides and kerosene, described polyaluminium chloride chemical molecular formula is [AL2 (OH) nCL6-n] m, 1≤n≤5 in formula, its composition summation of m≤10 is 100%, described floating agent composition comprises secondary octanol C8H18O, n-butanol CH3CH2CH2CH2OH and kerosene, and its composition summation is 100%; Raw ore is delivered to ball mill by batcher and pulverizes, and described both fully stir all by agitator again, untie coal slime group, forms the raw material with mobility; (2) raw material is roughly selected by flotation device, makes feed coal mineral water concentration >=30%, and then selected by flotation device, makes feed coal mineral water concentration≤25%; (3) be 0.2 ~ 1.5 MPa removal filter residue by filter press at operating pressure by the output article in (2) step; (4) by rough coal and the coal tailings separated in (3) step, rough coal is that purity is not less than 99.5% carbon dust, and the spoil that in coal tailings, mass content is 25 ~ 80% absorbs the part moisture in carbon dust by spoil simultaneously; (5) by the cleaned coal obtaining in (4) step, choose ashes and readymade coal by electric arc furnaces vacuum metling, readymade coal is directly put in storage.Comprise following technological process: a, isolated ashes and coal tailings in (3) step are stirred mutually, in the process stirring, add water, the mixture quality ratio of water and tailings and ashes is 2:1 simultaneously; B, the mixture obtaining in a step is concentrated by thickener, thickening temperature is at 30 ℃, obtains enriched mixture after concentrated by 3 hours; C, the enriched mixture obtaining is passed through to dryer again at 100 ~ 150 ℃ of temperature, dried and obtain mixture crystal through 2 hours in b step; D, the mixture crystal obtaining in c step is again pulverized finally by floatation process and is separated out and can utilizes raw material and reclaim raw material by ball mill; Described recovery material composition is that calcium carbonate and all the other can not be utilized impurity; Calcium carbonate mass component is at least 95%; Described calcium carbonate is by making cement with grog, composite material hybrid process.
embodiment 2
A kind of coal slime flotation as shown in Figure 1 and the method that is recycled, it is characterized in that, comprise following technique: floating agent is fully mixed according to 1:2 with mixer by medicament barrel with treatment and purification water, described floating agent is made up of 10 ~ 30% polyaluminium chlorides and kerosene, described polyaluminium chloride chemical molecular formula is [AL2 (OH) nCL6-n] m, 1≤n≤5 in formula, its composition summation of m≤10 is 100%, described floating agent composition comprises secondary octanol C8H18O, n-butanol CH3CH2CH2CH2OH and kerosene, and its composition summation is 100%; Raw ore is delivered to ball mill by batcher and pulverizes, and described both fully stir all by agitator again, untie coal slime group, forms the raw material with mobility; (2) raw material is roughly selected by flotation device, makes feed coal mineral water concentration >=30%, and then selected by flotation device, makes feed coal mineral water concentration≤25%; (3) be 0.2 ~ 1.5 MPa removal filter residue by filter press at operating pressure by the output article in (2) step; (4) by rough coal and the coal tailings separated in (3) step, rough coal is that purity is not less than 99.5% carbon dust, and the spoil that in coal tailings, mass content is 25 ~ 80% absorbs the part moisture in carbon dust by spoil simultaneously; (5) by the cleaned coal obtaining in (4) step, choose ashes and readymade coal by electric arc furnaces vacuum metling, readymade coal is directly put in storage.It is characterized in that, comprise following technological process: a, isolated ashes and coal tailings in (3) step are stirred mutually, in the process stirring, add water, the mixture quality ratio of water and tailings and ashes is 2:1 simultaneously; B, the mixture obtaining in a step is concentrated by thickener, thickening temperature is at 40 ℃, obtains enriched mixture after concentrated by 3 hours; C, the enriched mixture obtaining is passed through to dryer again at 100 ~ 150 ℃ of temperature, dried and obtain mixture crystal through 2 hours in b step; D, the mixture crystal obtaining in c step is again pulverized finally by floatation process and is separated out and can utilizes raw material and reclaim raw material by ball mill; Described recovery material composition is that calcium carbonate and all the other can not be utilized impurity; Calcium carbonate mass component is at least 95%; Described calcium carbonate is by making cement with grog, composite material hybrid process.
embodiment 3
A kind of coal slime flotation as shown in Figure 1 and the method that is recycled, it is characterized in that, comprise following technique: floating agent is fully mixed according to 1:2 with mixer by medicament barrel with treatment and purification water, described floating agent is made up of 10 ~ 30% polyaluminium chlorides and kerosene, described polyaluminium chloride chemical molecular formula is [AL2 (OH) nCL6-n] m, 1≤n≤5 in formula, its composition summation of m≤10 is 100%, described floating agent composition comprises secondary octanol C8H18O, n-butanol CH3CH2CH2CH2OH and kerosene, and its composition summation is 100%; Raw ore is delivered to ball mill by batcher and pulverizes, and described both fully stir all by agitator again, untie coal slime group, forms the raw material with mobility; (2) raw material is roughly selected by flotation device, makes feed coal mineral water concentration >=30%, and then selected by flotation device, makes feed coal mineral water concentration≤25%; (3) be 0.2 ~ 1.5 MPa removal filter residue by filter press at operating pressure by the output article in (2) step; (4) by rough coal and the coal tailings separated in (3) step, rough coal is that purity is not less than 99.5% carbon dust, and the spoil that in coal tailings, mass content is 25 ~ 80% absorbs the part moisture in carbon dust by spoil simultaneously; (5) by the cleaned coal obtaining in (4) step, choose ashes and readymade coal by electric arc furnaces vacuum metling, readymade coal is directly put in storage.It is characterized in that, comprise following technological process: a, isolated ashes and coal tailings in (3) step are stirred mutually, in the process stirring, add water, the mixture quality ratio of water and tailings and ashes is 2:1 simultaneously; B, the mixture obtaining in a step is concentrated by thickener, thickening temperature is at 50 ℃, obtains enriched mixture after concentrated by 3 hours; C, the enriched mixture obtaining is passed through to dryer again at 100 ~ 150 ℃ of temperature, dried and obtain mixture crystal through 2 hours in b step; D, the mixture crystal obtaining in c step is again pulverized finally by floatation process and is separated out and can utilizes raw material and reclaim raw material by ball mill; Described recovery material composition is that calcium carbonate and all the other can not be utilized impurity; Calcium carbonate mass component is at least 95%; Described calcium carbonate is by making cement with grog, composite material hybrid process.
embodiment 4
A kind of coal slime flotation method as shown in Figure 1, it is characterized in that, comprise following technique: (1) fully mixes floating agent according to 1:2 with mixer by medicament barrel with treatment and purification water, described floating agent is made up of 10% polyaluminium chloride and kerosene, described polyaluminium chloride chemical molecular formula is [AL2 (OH) nCL6-n] m, 1≤n≤5 in formula, its composition summation of m≤10 is 100%, described floating agent composition comprises secondary octanol C8H18O, n-butanol CH3CH2CH2CH2OH and kerosene, and its composition summation is 100%; Raw ore is delivered to ball mill by batcher and pulverizes, and described both fully stir all by agitator again, untie coal slime group, forms the raw material with mobility; (2) raw material is roughly selected by flotation device, makes feed coal mineral water concentration >=30%, and then selected by flotation device, makes feed coal mineral water concentration≤25%; (3) be 0.2 ~ 1.5 MPa removal filter residue by filter press at operating pressure by the output article in (2) step; (4) by rough coal and the coal tailings separated in (3) step, rough coal is that purity is not less than 99.5% carbon dust, and the spoil that in coal tailings, mass content is 25 ~ 80% absorbs the part moisture in carbon dust by spoil simultaneously; (5) by the cleaned coal obtaining in (4) step, choose ashes and readymade coal by electric arc furnaces vacuum metling, readymade coal is directly put in storage.
embodiment 5
A kind of coal slime flotation method as shown in Figure 1, it is characterized in that, comprise following technique: (1) fully mixes floating agent according to 1:2 with mixer by medicament barrel with treatment and purification water, described floating agent is made up of 20% polyaluminium chloride and kerosene, described polyaluminium chloride chemical molecular formula is [AL2 (OH) nCL6-n] m, 1≤n≤5 in formula, its composition summation of m≤10 is 100%, described floating agent composition comprises secondary octanol C8H18O, n-butanol CH3CH2CH2CH2OH and kerosene, and its composition summation is 100%; Raw ore is delivered to ball mill by batcher and pulverizes, and described both fully stir all by agitator again, untie coal slime group, forms the raw material with mobility; (2) raw material is roughly selected by flotation device, makes feed coal mineral water concentration >=30%, and then selected by flotation device, makes feed coal mineral water concentration≤25%; (3) be 0.2 ~ 1.5 MPa removal filter residue by filter press at operating pressure by the output article in (2) step; (4) by rough coal and the coal tailings separated in (3) step, rough coal is that purity is not less than 99.5% carbon dust, and the spoil that in coal tailings, mass content is 25 ~ 80% absorbs the part moisture in carbon dust by spoil simultaneously; (5) by the cleaned coal obtaining in (4) step, choose ashes and readymade coal by electric arc furnaces vacuum metling, readymade coal is directly put in storage.
embodiment 6
A kind of coal slime flotation method as shown in Figure 1, it is characterized in that, comprise following technique: (1) fully mixes floating agent according to 1:2 with mixer by medicament barrel with treatment and purification water, described floating agent is made up of 30% polyaluminium chloride and kerosene, described polyaluminium chloride chemical molecular formula is [AL2 (OH) nCL6-n] m, 1≤n≤5 in formula, its composition summation of m≤10 is 100%, described floating agent composition comprises secondary octanol C8H18O, n-butanol CH3CH2CH2CH2OH and kerosene, and its composition summation is 100%; Raw ore is delivered to ball mill by batcher and pulverizes, and described both fully stir all by agitator again, untie coal slime group, forms the raw material with mobility; (2) raw material is roughly selected by flotation device, makes feed coal mineral water concentration >=30%, and then selected by flotation device, makes feed coal mineral water concentration≤25%; (3) be 0.2 ~ 1.5 MPa removal filter residue by filter press at operating pressure by the output article in (2) step; (4) by rough coal and the coal tailings separated in (3) step, rough coal is that purity is not less than 99.5% carbon dust, and the spoil that in coal tailings, mass content is 25 ~ 80% absorbs the part moisture in carbon dust by spoil simultaneously; (5) by the cleaned coal obtaining in (4) step, choose ashes and readymade coal by electric arc furnaces vacuum metling, readymade coal is directly put in storage.
embodiment 7
The method that is recycled of a kind of coal slime ashes as shown in Figure 1, it is characterized in that, comprise following technological process: a, isolated ashes and coal tailings in (3) step are stirred mutually, in the process stirring, add water, the mixture quality ratio of water and tailings and ashes is 2:1 simultaneously; B, the mixture obtaining in a step is concentrated by thickener, thickening temperature is at 30 ℃, obtains enriched mixture after concentrated by 3 hours; C, the enriched mixture obtaining in b step was again dried and obtained mixture crystal through 2 hours at 100 ℃ of temperature through dryer; D, the mixture crystal obtaining in c step is again pulverized finally by floatation process and is separated out and can utilizes raw material and reclaim raw material by ball mill; Described recovery material composition is that calcium carbonate and all the other can not be utilized impurity; Described calcium carbonate mass component is at least 95%; Described calcium carbonate is by making cement with grog, composite material hybrid process.
embodiment 8
The method that is recycled of a kind of coal slime ashes as shown in Figure 1, it is characterized in that, comprise following technological process: a, isolated ashes and coal tailings in (3) step are stirred mutually, in the process stirring, add water, the mixture quality ratio of water and tailings and ashes is 2:1 simultaneously; B, the mixture obtaining in a step is concentrated by thickener, thickening temperature is at 40 ℃, obtains enriched mixture after concentrated by 3 hours; C, the enriched mixture obtaining in b step was again dried and obtained mixture crystal through 2 hours at 105 ℃ of temperature through dryer; D, the mixture crystal obtaining in c step is again pulverized finally by floatation process and is separated out and can utilizes raw material and reclaim raw material by ball mill; Described recovery material composition is that calcium carbonate and all the other can not be utilized impurity; Described calcium carbonate mass component is at least 95%; Described calcium carbonate is by making cement with grog, composite material hybrid process.
embodiment 9
The method that is recycled of a kind of coal slime ashes as shown in Figure 1, it is characterized in that, comprise following technological process: a, isolated ashes and coal tailings in (3) step are stirred mutually, in the process stirring, add water, the mixture quality ratio of water and tailings and ashes is 2:1 simultaneously; B, the mixture obtaining in a step is concentrated by thickener, thickening temperature is at 50 ℃, obtains enriched mixture after concentrated by 3 hours; C, the enriched mixture obtaining in b step was again dried and obtained mixture crystal through 2 hours at 150 ℃ of temperature through dryer; D, the mixture crystal obtaining in c step is again pulverized finally by floatation process and is separated out and can utilizes raw material and reclaim raw material by ball mill; Described recovery material composition is that calcium carbonate and all the other can not be utilized impurity; Described calcium carbonate mass component is at least 95%; Described calcium carbonate is by making cement with grog, composite material hybrid process.
Claims (5)
1. a coal slime flotation method, is characterized in that, comprises following technique:
(1) floating agent is fully mixed according to 1:2 with mixer by medicament barrel with treatment and purification water, described floating agent is made up of 10 ~ 30% polyaluminium chlorides and kerosene, described polyaluminium chloride chemical molecular formula is [AL2 (OH) nCL6-n] m, 1≤n≤5 in formula, its composition summation of m≤10 is 100%, described floating agent composition comprises secondary octanol C8H18O, n-butanol CH3CH2CH2CH2OH and kerosene, and its composition summation is 100%; Raw ore is delivered to ball mill by batcher and pulverizes, and described both fully stir all by agitator again, untie coal slime group, forms the raw material with mobility;
(2) raw material is roughly selected by flotation device, makes feed coal mineral water concentration >=30%, and then selected by flotation device, makes feed coal mineral water concentration≤25%;
(3) be 0.2 ~ 1.5 MPa removal filter residue by filter press at operating pressure by the output article in (2) step;
(4) by rough coal and the coal tailings separated in (3) step, rough coal is that purity is not less than 99.5% carbon dust, and the spoil that in coal tailings, mass content is 25 ~ 80% absorbs the part moisture in carbon dust by spoil simultaneously;
(5) by the cleaned coal obtaining in (4) step, choose ashes and readymade coal by electric arc furnaces vacuum metling, readymade coal is directly put in storage.
2. the coal slime ashes method that is recycled, is characterized in that, comprises following technological process:
A, isolated ashes and coal tailings in (3) step are stirred mutually, add water simultaneously in the process stirring, the mixture quality ratio of water and tailings and ashes is 2:1;
B, the mixture obtaining in a step is concentrated by thickener, thickening temperature is at 30 ~ 50 ℃, obtains enriched mixture after concentrated by 3 hours;
C, the enriched mixture obtaining is passed through to dryer again at 100 ~ 150 ℃ of temperature, dried and obtain mixture crystal through 2 hours in b step;
D, the mixture crystal obtaining in c step is again pulverized finally by floatation process and is separated out and can utilizes raw material and reclaim raw material by ball mill.
3. a kind of coal slime flotation according to claim 1 and 2 and the method that is recycled, is characterized in that: described recovery material composition is that calcium carbonate and all the other can not be utilized impurity.
4. a kind of coal slime flotation according to claim 3 and the method that is recycled, is characterized in that: described calcium carbonate mass component is at least 95%.
5. a kind of coal slime flotation according to claim 3 and the method that is recycled, is characterized in that: described calcium carbonate is by making cement with grog, composite material hybrid process.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104668104A (en) * | 2015-02-16 | 2015-06-03 | 中国矿业大学 | Pulp mixing method capable of improving difficult-to-float coal slime and medicament adsorption effects |
| CN104668100A (en) * | 2015-02-16 | 2015-06-03 | 中国矿业大学 | Multi-section serial connecting type pulp conditioning technology for improving pulp conditioning efficiency of difficult floated coal slurry |
| CN105964409A (en) * | 2016-05-19 | 2016-09-28 | 康洪强 | Method for treating fine slag of coal gasification device |
| CN106396729A (en) * | 2016-09-13 | 2017-02-15 | 西安科技大学 | Method for preparing light ceramsite filter material by using coal slime |
| CN107344141A (en) * | 2017-08-02 | 2017-11-14 | 曲靖市沾益区龙鑫资源回收有限公司 | A kind of technique of coal slime extraction cleaned coal |
| CN115318427A (en) * | 2022-07-22 | 2022-11-11 | 华阳新材料科技集团有限公司 | Process and device for preparing nanoscale ultrapure carbon material by using coal slime |
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2013
- 2013-08-28 CN CN201310379921.9A patent/CN103785523A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104668104A (en) * | 2015-02-16 | 2015-06-03 | 中国矿业大学 | Pulp mixing method capable of improving difficult-to-float coal slime and medicament adsorption effects |
| CN104668100A (en) * | 2015-02-16 | 2015-06-03 | 中国矿业大学 | Multi-section serial connecting type pulp conditioning technology for improving pulp conditioning efficiency of difficult floated coal slurry |
| CN105964409A (en) * | 2016-05-19 | 2016-09-28 | 康洪强 | Method for treating fine slag of coal gasification device |
| CN106396729A (en) * | 2016-09-13 | 2017-02-15 | 西安科技大学 | Method for preparing light ceramsite filter material by using coal slime |
| CN106396729B (en) * | 2016-09-13 | 2019-06-04 | 西安科技大学 | A method of lightweight ceramsite filter media is prepared using coal slime |
| CN107344141A (en) * | 2017-08-02 | 2017-11-14 | 曲靖市沾益区龙鑫资源回收有限公司 | A kind of technique of coal slime extraction cleaned coal |
| CN107344141B (en) * | 2017-08-02 | 2019-12-13 | 曲靖市沾益区龙鑫资源回收有限公司 | Process for extracting clean coal from coal slime |
| CN115318427A (en) * | 2022-07-22 | 2022-11-11 | 华阳新材料科技集团有限公司 | Process and device for preparing nanoscale ultrapure carbon material by using coal slime |
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