CN111151382A - Method for reducing coal flotation collector kerosene consumption - Google Patents
Method for reducing coal flotation collector kerosene consumption Download PDFInfo
- Publication number
- CN111151382A CN111151382A CN202010062613.3A CN202010062613A CN111151382A CN 111151382 A CN111151382 A CN 111151382A CN 202010062613 A CN202010062613 A CN 202010062613A CN 111151382 A CN111151382 A CN 111151382A
- Authority
- CN
- China
- Prior art keywords
- coal
- flotation
- stirring
- reducing
- kerosene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B03D1/018—Mixtures of inorganic and organic 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
- B03D1/002—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
- B03D2201/04—Frothers
-
- 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
- B03D2203/04—Non-sulfide ores
- B03D2203/08—Coal ores, fly ash or soot
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method for reducing the consumption of coal oil used as a coal flotation collector, belongs to the technical field of mineral processing engineering, and relates to a method for improving the yield of flotation clean coal and the ash content of tail coal through the synergistic effect of a surfactant and the coal oil. The main process is characterized in that: firstly, crushing coal to be less than 0.5 mm, mixing and stirring the crushed coal and a surfactant with certain concentration for a certain time, then carrying out size mixing, and sequentially adding a collecting agent kerosene and a foaming agent and stirring for carrying out flotation. The method applies the surfactant to the flotation of coal, improves the collecting performance of the collecting agent kerosene, promotes the directional spreading of the collecting agent kerosene on the organic surface, improves the use efficiency of the kerosene, and can reduce the using amount of the collecting agent.
Description
Technical Field
The invention relates to a method for reducing the consumption of coal flotation collector kerosene, belonging to the technical field of mineral processing engineering.
Background
The fine coal separation in China is mainly carried out by flotation, and the performance of a flotation reagent is the key for realizing good flotation indexes. The coal quality is poor along with the consumption and exploitation of coal, the difficult-to-float coal slime is increased, particularly when low-rank coal which occupies nearly half of the coal reserve is floated, the traditional collector kerosene or light diesel oil is low in flotation efficiency, because organic matters of the low-rank coal contain a large number of oxygen-containing functional groups, the natural wettability difference between the organic matters and mineral matters is small, and the flotation quality improvement of the low-rank coal can be realized only by a large number of collectors. In addition, the problems of poor dispersion of the nonpolar hydrocarbon oil collecting agent, poor selectivity and the like exist in the flotation. Therefore, the performance of the existing collecting agent is improved, and the use amount of the collecting agent is reduced, so that the method has important significance for reducing the coal flotation cost and improving the flotation benefit.
The surfactant with a special chemical structure can be selectively adsorbed on the surface of coal to form preferential adsorption on organic matters in the coal, so that the wettability difference between the organic matters and inorganic matters is enlarged, and the spreading of the collecting agent on the surface of the organic matters in the coal is promoted. Meanwhile, the surfactant can emulsify the nonpolar hydrocarbon oil collecting agent, so that the use amount of the collecting agent is reduced, the flotation cost is reduced, and the flotation efficiency is improved.
Disclosure of Invention
The invention aims to provide a method for reducing the consumption of coal oil collector in coal flotation, aiming at the problem of large consumption of coal oil collector in coal flotation, coal is pretreated before flotation, a surfactant is selectively adsorbed on the surface of the coal, the surface hydrophobicity is enhanced, and the spreading of the coal oil on the surface of the coal is promoted, so that the consumption of the coal oil is saved, and the flotation efficiency is improved.
The invention is essentially a method for improving the yield of flotation clean coal and the ash content of tail coal by the synergistic action of a surfactant and kerosene.
The invention provides a method for reducing the consumption of coal flotation collector kerosene, which comprises the following steps:
(1) crushing coal to a particle size of less than 0.5 mm;
(2) mixing the coal in the step (1) with a surfactant solution with a certain concentration, adjusting the mixture into ore pulp with a concentration of 80-100 g (coal)/L (surfactant solution), and stirring for 5-120 min;
(3) adding a pH regulator into the ore pulp obtained in the step (2), adjusting the pH value of the ore pulp to 6.5-8.5, and stirring for 2-7 min, preferably 3 min;
(4) adding collecting agent kerosene into the ore pulp obtained in the step (3), and stirring for 1-5 min, preferably 2 min;
(5) and (4) adding a foaming agent octanol into the ore pulp obtained in the step (4), stirring for 8-60 s, preferably 10s, and then performing foam scraping flotation for 3 min.
In the method, the coal in the step (1) is any one of long flame coal, weak sticky coal, medium sticky coal, gas coal and gas fat coal.
In the above method, in the step (2), the surfactant is dodecyl alcohol polyoxyethylene ether (C) having polymerization degrees n of 7, 9 and 1512EOn) Any one of lauric acid polyoxyethylene ether (LAE-n) and octyl phenol polyoxyethylene ether (OP-n). The concentration of the surfactant solution is 100-200 mg/L, the temperature of the ore pulp is 15-35 ℃, and the stirring speed is 800-1200 r/min.
In the above method, the pH adjuster in step (3) is any one of sulfuric acid, sodium hydroxide, sodium carbonate, and lime.
In the method, the dosage of the collecting agent kerosene in the step (4) is 500-1600 g (kerosene)/t (coal), and preferably 500-1000 g (kerosene)/t (coal).
In the method, the dosage of the foaming agent, namely the secondary octanol, in the step (5) is 50-200 mL (secondary octanol)/t (coal).
The invention has the beneficial effects that: before coal flotation operation, the coal is pretreated by the surfactant, the hydrophilic end of the surfactant covers the surface of the polar oxygen-containing functional group on the surface of the coal, and the hydrophobic end is exposed, so that the hydrophobicity of the surface of the coal is obviously improved; meanwhile, the adhesion probability of the coal particles and the bubbles is increased, and the adhesion between the coal particles and the bubbles is enhanced. When the yield of flotation clean coal and ash content are basically unchanged, compared with coal which is not pretreated by the surfactant, the using amount of the coal flotation collector pretreated by the surfactant is reduced, so that the using efficiency of the collector kerosene can be improved by using the surfactant, and the purpose of reducing the using amount of the collector kerosene is achieved.
Detailed Description
The present invention is further illustrated by, but is not limited to, the following examples.
Example 1
Crushing the weakly sticky coal sample to below 0.5 mm, weighing 9.6g of crushed coal and 120ml of C with the concentration of 200mg/L12EO9Mixing the solution in a 250mL flat-bottomed flask, placing the flask in a constant-temperature magnetic stirring water bath kettle with the temperature of 25 ℃ and the rotating speed of 800 r/min, stirring at a constant speed for 120min, adding a pH regulator sodium hydroxide into the same ore pulp after adsorption is completed, controlling the pH value of the ore pulp to be 7.5-8.5, and stirring for 3 min. And directly pouring the pretreated ore pulp into a flotation tank for flotation operation.
For coal and warp C12EO9The pretreated coal is respectively floated by adopting XGF series slot-hanging floaters, the volume of the floaters is 120mL, the rotating speed of a main shaft is 1800 r/min, the aeration quantity is 0.2L/min, the concentration of flotation pulp is 80 g/L, the consumption of collecting agent kerosene is 1600 g/t (raw coal), 800 g/t (pretreated coal sample), and the consumption of foaming agent sec-octanol is 200 mL/t. And (3) adding kerosene after mixing for 2min, stirring for 2min, adding octanol, stirring for 10s, and then starting scraping for 3 min. And respectively carrying out suction filtration, drying and weighing on the flotation clean coal and the tail coal, and carrying out ash content determination. The results are shown in Table 1.
TABLE 1 coal and warp C12EO9Pretreated coal flotation results
| Coal (coal) | Warp C12EO9Pretreated coal | |
| Collecting agent dosage (mg) | 15.36 | 7.68 |
| Yield (%)% of flotation clean coal | 19.62 | 19.81 |
| Clean coal ash (%) | 17.50 | 18.50 |
Example 2
Crushing a weakly sticky coal sample to be less than 0.5 mm, weighing 9.6g of crushed coal and 120mL of LAE-9 solution with the concentration of 200mg/L, mixing the crushed coal and the solution in a 250mL flat-bottomed flask, placing the flask in a constant-temperature magnetic stirring water bath kettle with the temperature of 25 ℃ and the rotating speed of 800 r/min, stirring the mixture at a constant speed for 120min, after adsorption is completed, adding a pH regulator sodium hydroxide into the same ore pulp to control the pH value of the ore pulp to be 7.5-8.5, and stirring the mixture for 3 min. And directly pouring the pretreated ore pulp into a flotation tank for flotation operation.
Coal and coal pretreated by LAE-9 are respectively floated, an XGF series of hanging groove flotation machines are adopted, the volume is 120mL, the rotating speed of a main shaft is 1800 r/min, the air inflation is 0.2L/min, the concentration of flotation pulp is 80 g/L, the consumption of collecting agent kerosene is 1600 g/t (raw coal), 1000 g/t (pretreated coal sample), and the consumption of foaming agent sec-octanol is 200 mL/t. And (3) adding kerosene after mixing for 2min, stirring for 2min, adding octanol, stirring for 10s, and then starting scraping for 3 min. And respectively carrying out suction filtration, drying and weighing on the flotation clean coal and the tail coal, and carrying out ash content determination. The results are shown in Table 2.
TABLE 2 coal and LAE-9 pretreated coal flotation results
| Coal (coal) | LAE-9 pretreated coal | |
| Collecting agent dosage (mg) | 15.36 | 9.6 |
| Yield (%)% of flotation clean coal | 19.62 | 20.01 |
| Clean coal ash (%) | 17.50 | 17.68 |
Example 3
The method comprises the steps of crushing a weakly sticky coal sample to be less than 0.5 mm, weighing 9.6g of crushed coal and 120mL of OP-9 solution with the concentration of 200mg/L, mixing the crushed coal and the solution in a 250mL flat-bottomed flask, placing the flask in a constant-temperature magnetic stirring water bath kettle with the temperature of 25 ℃ and the rotating speed of 800 r/min, stirring the mixture at a constant speed for 120min, adding a pH regulator sodium hydroxide into the same ore pulp after adsorption is completed, controlling the pH value of the ore pulp to be 7.5-8.5, and stirring the mixture for 3 min. And directly pouring the pretreated ore pulp into a flotation tank for flotation operation.
Coal and OP-9 pretreated coal are respectively floated, an XGF series hanging groove flotation machine is adopted, the volume is 120mL, the rotating speed of a main shaft is 1800 r/min, the air inflation is 0.2L/min, the concentration of flotation pulp is 80 g/L, the consumption of collecting agent kerosene is 1600 g/t (raw coal), 700 g/t (pretreated coal sample), and the consumption of secondary foaming agent octanol is 200 mL/t. And (3) adding kerosene after mixing for 2min, stirring for 2min, adding octanol, stirring for 10s, and then starting scraping for 3 min. And respectively carrying out suction filtration, drying and weighing on the flotation clean coal and the tail coal, and carrying out ash content determination. The results are shown in Table 3.
TABLE 3 coal and flotation results for OP-9 pretreated coal
| Coal (coal) | OP-9 pretreated coal | |
| Collecting agent dosage (mg) | 15.36 | 6.72 |
| Yield (%)% of flotation clean coal | 19.62 | 19.02 |
| Clean coal ash (%) | 17.50 | 17.48 |
Example 4
Crushing the medium-viscosity coal sample to be less than 0.5 mm, weighing 12 g of crushed coal and 120ml of C with the concentration of 100mg/L12EO9Mixing the solution in 250mL flat-bottom flask, and placing at 25 deg.C and rotating at the speed ofStirring at a constant speed of 1200 r/min in a constant-temperature magnetic stirring water bath for 30 min, after adsorption is completed, adding a pH regulator sodium carbonate into the same ore pulp to control the pH value of the ore pulp to be 6.5-7.5, and stirring for 3 min. And directly pouring the pretreated ore pulp into a flotation tank for flotation operation.
For coal and warp C12EO9The pretreated coal is respectively floated by adopting XGF series slot-hanging floaters, the volume of the floaters is 120mL, the rotating speed of a main shaft is 1800 r/min, the aeration quantity is 0.2L/min, the concentration of flotation pulp is 100 g/L, the consumption of collecting agent kerosene is 700 g/t (raw coal), 500 g/t (pretreated coal sample), and the consumption of foaming agent sec-octanol is 100 mL/t. And (3) adding kerosene after mixing for 2min, stirring for 2min, adding octanol, stirring for 10s, and then starting scraping for 3 min. And respectively carrying out suction filtration, drying and weighing on the flotation clean coal and the tail coal, and carrying out ash content determination. The results are shown in Table 4.
TABLE 4 coal and warp C12EO9Pretreated coal flotation results
| Coal (coal) | Warp C12EO9Pretreated coal | |
| Collecting agent dosage (mg) | 8.40 | 6.00 |
| Yield (%)% of flotation clean coal | 29.94 | 30.01 |
| Fly ashScore (%) | 13.34 | 13.97 |
Example 5
Crushing a gas coal sample to below 0.5 mm, weighing 10.8 g of crushed coal and 120ml of C with the concentration of 150mg/L12EO9Mixing the solution in a 250mL flat-bottomed flask, placing the flask in a constant-temperature magnetic stirring water bath kettle with the temperature of 25 ℃ and the rotating speed of 1000 r/min, stirring at a constant speed for 5min, adding a pH regulator sodium carbonate into the same ore pulp after adsorption is completed to control the pH value of the ore pulp to be 6.5-7.5, and stirring for 3 min. And directly pouring the pretreated ore pulp into a flotation tank for flotation operation.
For coal and warp C12EO9The pretreated coal is respectively floated by adopting XGF series slot-hanging floaters, the volume of the floaters is 120mL, the rotating speed of a main shaft is 1800 r/min, the aeration quantity is 0.2L/min, the concentration of flotation pulp is 90 g/L, the consumption of collecting agent kerosene is 900 g/t (raw coal) and 600 g/t (pretreated coal sample), and the consumption of foaming agent sec-octanol is 50 mL/t. And (3) adding kerosene after mixing for 2min, stirring for 2min, adding octanol, stirring for 10s, and then starting scraping for 3 min. And respectively carrying out suction filtration, drying and weighing on the flotation clean coal and the tail coal, and carrying out ash content determination. The results are shown in Table 5.
TABLE 5 coal and warp C12EO9Pretreated coal flotation results
| Coal (coal) | Warp C12EO9Pretreated coal | |
| Collecting agent dosage (mg) | 9.72 | 6.48 |
| Yield (%)% of flotation clean coal | 55.82 | 55.56 |
| Clean coal ash (%) | 11.23 | 11.86 |
Example 6
The method comprises the steps of crushing a long-flame coal sample to be less than 0.5 mm, weighing 9.6g of crushed coal and 120mL of LAE-9 solution with the concentration of 200mg/L, mixing the crushed coal and the 120mL of LAE-9 solution in a 250mL flat-bottomed flask, placing the flat-bottomed flask in a constant-temperature magnetic stirring water bath kettle with the temperature of 25 ℃ and the rotating speed of 1100 r/min, stirring for 90min at a constant speed, adding lime serving as a pH regulator into the same ore pulp after adsorption is completed, controlling the pH value of the ore pulp to be 7.5-8.5, and stirring for 3 min. And directly pouring the pretreated ore pulp into a flotation tank for flotation operation.
Coal and coal pretreated by LAE-9 are respectively floated, an XGF series of hanging groove flotation machines are adopted, the volume is 120mL, the rotating speed of a main shaft is 1800 r/min, the air inflation is 0.2L/min, the concentration of flotation pulp is 80 g/L, the consumption of collecting agent kerosene is 1400 g/t (raw coal), 1000 g/t (pretreated coal sample), and the consumption of foaming agent sec-octanol is 200 mL/t. And (3) adding kerosene after mixing for 2min, stirring for 2min, adding octanol, stirring for 10s, and then starting scraping for 3 min. And respectively carrying out suction filtration, drying and weighing on the flotation clean coal and the tail coal, and carrying out ash content determination. The results are shown in Table 6.
TABLE 6 coal and flotation results for LAE-9 pretreated coal
| Coal (coal) | LAE-9 pretreated coal | |
| Collecting agent dosage (mg) | 13.44 | 9.60 |
| Yield (%)% of flotation clean coal | 18.13 | 18.92 |
| Clean coal ash (%) | 17.42 | 17.60 |
Example 7
The method comprises the steps of crushing an air fertilizer coal sample to be less than 0.5 mm, weighing 12 g of crushed coal and 120mL of OP-9 solution with the concentration of 100mg/L, mixing the crushed coal and the solution in a 250mL flat-bottomed flask, placing the flask in a constant-temperature magnetic stirring water bath kettle with the temperature of 25 ℃ and the rotating speed of 900 r/min, stirring the mixture at a constant speed for 20min, adding a pH regulator sulfuric acid into the same ore pulp after adsorption is completed, controlling the pH value of the ore pulp to be 6.5-7.5, and stirring the mixture for 3 min. And directly pouring the pretreated ore pulp into a flotation tank for flotation operation.
Coal and OP-9 pretreated coal are respectively floated, an XGF series hanging groove flotation machine is adopted, the volume is 120mL, the rotating speed of a main shaft is 1800 r/min, the air inflation is 0.2L/min, the concentration of flotation pulp is 100 g/L, the consumption of collecting agent kerosene is 1000 g/t (raw coal), 600 g/t (pretreated coal sample), and the consumption of secondary foaming agent octanol is 150 mL/t. And (3) adding kerosene after mixing for 2min, stirring for 2min, adding octanol, stirring for 10s, and then starting scraping for 3 min. And respectively carrying out suction filtration, drying and weighing on the flotation clean coal and the tail coal, and carrying out ash content determination. The results are shown in Table 7.
TABLE 7 coal and flotation results for OP-9 pretreated coal
| Coal (coal) | OP-9 pretreated coal | |
| Collecting agent dosage (mg) | 12.00 | 7.20 |
| Yield (%)% of flotation clean coal | 61.03 | 62.31 |
| Clean coal ash (%) | 10.12 | 10.68 |
From tables 1 to 7, it can be seen that, when the yield of the flotation clean coal and the ash content are basically unchanged, compared with the coal which is not pretreated by the surfactant, the usage amount of the coal flotation collector pretreated by the surfactant is obviously reduced, and therefore, the usage efficiency of the collector kerosene is improved by using the surfactant, and the purpose of reducing the usage amount of the collector kerosene is achieved.
Claims (10)
1. A method for reducing the consumption of coal flotation collector kerosene is characterized by comprising the following steps:
(1) crushing coal to a particle size of less than 0.5 mm;
(2) mixing the coal in the step (1) with a surfactant solution, adjusting the mixture into ore pulp of which the concentration is 80-100 g coal/L surfactant solution, and stirring for 5-120 min;
(3) adding a pH regulator into the ore pulp obtained in the step (2), adjusting the pH value of the ore pulp to 6.5-8.5, and stirring for 2-7 min;
(4) adding collecting agent kerosene into the ore pulp obtained in the step (3), and stirring for 1-5 min;
(5) and (4) adding a foaming agent octanol into the ore pulp obtained in the step (4), stirring for 8-60 s, and then performing foam scraping flotation for 3 min.
2. The method for reducing the dosage of the coal flotation collector kerosene according to claim 1, characterized in that the coal in the step (1) is any one of long flame coal, weakly sticky coal, medium sticky coal, gas coal and gas fat coal.
3. The method for reducing the dosage of the coal flotation collector kerosene according to claim 1, characterized in that in the step (2), the surfactant is any one of lauryl alcohol polyoxyethylene ether, lauric acid polyoxyethylene ether and octyl phenol polyoxyethylene ether with the polymerization degree n of 7, 9 and 15.
4. The method for reducing the consumption of the coal flotation collector kerosene according to claim 1, characterized in that the concentration of the surfactant solution in the step (2) is 100-200 mg/L, the pulp temperature is 15-35 ℃, and the stirring speed is 800-1200 r/min.
5. The method for reducing the dosage of the coal flotation collector kerosene according to claim 1, characterized in that the pH adjusting agent in the step (3) is any one of sulfuric acid, sodium hydroxide, sodium carbonate and lime.
6. The method for reducing the dosage of the coal flotation collector kerosene according to claim 1, characterized in that in the step (3), the stirring time is 3 min.
7. The method for reducing the consumption of the coal flotation collector kerosene according to claim 1, characterized in that in the step (4), the quantity of the collector kerosene used per t of coal is 500-1000 g.
8. The method for reducing the dosage of the coal flotation collector kerosene according to claim 1, characterized in that in the step (4), the stirring time is 2 min.
9. The method for reducing the dosage of the coal flotation collector kerosene according to claim 1, wherein in the step (5), the dosage of the foaming agent octanol used per t coal is 50-200 mL.
10. The method for reducing the dosage of the coal flotation collector kerosene according to claim 1, characterized in that in the step (5), the stirring time is 10 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062613.3A CN111151382A (en) | 2020-01-20 | 2020-01-20 | Method for reducing coal flotation collector kerosene consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062613.3A CN111151382A (en) | 2020-01-20 | 2020-01-20 | Method for reducing coal flotation collector kerosene consumption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111151382A true CN111151382A (en) | 2020-05-15 |
Family
ID=70564450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010062613.3A Pending CN111151382A (en) | 2020-01-20 | 2020-01-20 | Method for reducing coal flotation collector kerosene consumption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111151382A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426583A (en) * | 2021-07-01 | 2021-09-24 | 中国矿业大学 | Directional development method of low-quality coal flotation collecting agent |
| CN113560045A (en) * | 2021-06-23 | 2021-10-29 | 太原理工大学 | Method for enhancing flotation selectivity of coal slime |
| CN113828424A (en) * | 2021-09-13 | 2021-12-24 | 太原理工大学 | Mixed collecting agent for low-rank coal flotation and preparation and use methods thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2282983A (en) * | 1982-12-30 | 1984-07-05 | Sherex Chemical Company, Inc. | Ester-alcohol frothers for froth flotation of coal |
| CN1919466A (en) * | 2006-01-23 | 2007-02-28 | 攀枝花钢铁有限责任公司钛业分公司 | Collector for flotation collecting ilmenite and its preparation method |
| CN106000657A (en) * | 2016-06-22 | 2016-10-12 | 太原理工大学 | Coal slurry flotation collector and preparation method thereof |
| CN109201341A (en) * | 2018-08-21 | 2019-01-15 | 中国神华能源股份有限公司 | Compound the low-order coal coal slime flotation collector and its preparation method and application of sour aldehyde ether |
-
2020
- 2020-01-20 CN CN202010062613.3A patent/CN111151382A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2282983A (en) * | 1982-12-30 | 1984-07-05 | Sherex Chemical Company, Inc. | Ester-alcohol frothers for froth flotation of coal |
| CN1919466A (en) * | 2006-01-23 | 2007-02-28 | 攀枝花钢铁有限责任公司钛业分公司 | Collector for flotation collecting ilmenite and its preparation method |
| CN106000657A (en) * | 2016-06-22 | 2016-10-12 | 太原理工大学 | Coal slurry flotation collector and preparation method thereof |
| CN109201341A (en) * | 2018-08-21 | 2019-01-15 | 中国神华能源股份有限公司 | Compound the low-order coal coal slime flotation collector and its preparation method and application of sour aldehyde ether |
Non-Patent Citations (2)
| Title |
|---|
| 邵景景等: "《煤炭深加工与利用》", 31 January 2014, 中国矿业大学出版社 * |
| 郭伟: "表面活性剂选择性吸/脱附对低阶煤可浮性影响的研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113560045A (en) * | 2021-06-23 | 2021-10-29 | 太原理工大学 | Method for enhancing flotation selectivity of coal slime |
| CN113426583A (en) * | 2021-07-01 | 2021-09-24 | 中国矿业大学 | Directional development method of low-quality coal flotation collecting agent |
| CN113426583B (en) * | 2021-07-01 | 2022-07-29 | 中国矿业大学 | Directional development method of low-quality coal flotation collector |
| CN113828424A (en) * | 2021-09-13 | 2021-12-24 | 太原理工大学 | Mixed collecting agent for low-rank coal flotation and preparation and use methods thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111151382A (en) | Method for reducing coal flotation collector kerosene consumption | |
| CN104014431A (en) | Floatation process for oxidized coal slime | |
| CN105363563B (en) | A kind of method of lignite reverse flotation deliming | |
| CN103285625B (en) | Defoaming method for reverse flotation desilication of phosphorite | |
| EA030500B1 (en) | Depressant for ore mineral flotation, composition and process for enriching a mineral | |
| CN110508403B (en) | Method for strengthening coal slime flotation by combining hydrogen and oxygen plasmas | |
| CN112547313B (en) | Application of hydroxycitric acid in cassiterite mineral flotation | |
| WO2021008324A1 (en) | Liquid-solid composite collector for coal slime flotation and preparation method therefor | |
| CN109553266A (en) | A kind of method of cyanobacteria deep dehydration | |
| CN112916582A (en) | Gasification fly ash decarburization method by combined flotation of mechanical activation and compound medicament | |
| CN107335546A (en) | A kind of low-rank coal flotation method based on positively charged bubble | |
| CN113828424A (en) | Mixed collecting agent for low-rank coal flotation and preparation and use methods thereof | |
| CN114011583B (en) | Coal slime flotation agent and preparation method thereof | |
| CN102614992A (en) | Efficient foaming agent and preparation method and using method thereof | |
| CN112844854B (en) | Flotation collector for copper oxide ore and preparation method thereof | |
| CN109201341B (en) | Low-rank coal slime flotation collecting agent compounded with acid aldehyde ether and preparation method and application thereof | |
| CN110976100B (en) | Method for sorting oxidized coal slime | |
| CN111423902B (en) | Demulsification synergist for thickened oil and preparation method thereof | |
| CN109569890B (en) | Mixed ether-based flotation agent | |
| CN111589590B (en) | Flotation method for oxidized coal slime | |
| CN110605184B (en) | Flotation collector for uranium asphalt ore and application thereof | |
| CN204261589U (en) | A kind of acid hydrolysis solution and flocculant mixing stirring device | |
| CN109127149B (en) | Oxidized coal slime flotation collector, preparation method and flotation method | |
| CN109174464B (en) | Collecting agent for flotation of non-sticky coal slime and flotation method | |
| CN109201344B (en) | Low-rank coal slime flotation collecting agent compounded with ketone-aldehyde ether and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200515 |
|
| RJ01 | Rejection of invention patent application after publication |