CN113814070B - Environment-friendly coal dressing flotation reagent and preparation method thereof - Google Patents
Environment-friendly coal dressing flotation reagent and preparation method thereof Download PDFInfo
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- CN113814070B CN113814070B CN202111142473.1A CN202111142473A CN113814070B CN 113814070 B CN113814070 B CN 113814070B CN 202111142473 A CN202111142473 A CN 202111142473A CN 113814070 B CN113814070 B CN 113814070B
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- 239000003245 coal Substances 0.000 title claims abstract description 57
- 238000005188 flotation Methods 0.000 title claims description 41
- 239000003153 chemical reaction reagent Substances 0.000 title claims description 31
- 238000002360 preparation method Methods 0.000 title claims description 18
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000002283 diesel fuel Substances 0.000 claims abstract description 25
- 239000003350 kerosene Substances 0.000 claims abstract description 25
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 claims abstract description 24
- FLIACVVOZYBSBS-UHFFFAOYSA-N Methyl palmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC FLIACVVOZYBSBS-UHFFFAOYSA-N 0.000 claims abstract description 24
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical compound CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 claims abstract description 24
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229960000541 cetyl alcohol Drugs 0.000 claims abstract description 21
- 239000004088 foaming agent Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- BDCFWIDZNLCTMF-UHFFFAOYSA-N 2-phenylpropan-2-ol Chemical compound CC(C)(O)C1=CC=CC=C1 BDCFWIDZNLCTMF-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 17
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 17
- JCTXKRPTIMZBJT-UHFFFAOYSA-N 2,2,4-trimethylpentane-1,3-diol Chemical compound CC(C)C(O)C(C)(C)CO JCTXKRPTIMZBJT-UHFFFAOYSA-N 0.000 claims abstract description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 12
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 12
- 244000068988 Glycine max Species 0.000 claims abstract description 12
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 23
- 238000004945 emulsification Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- KOPMZTKUZCNGFY-UHFFFAOYSA-N 1,1,1-triethoxybutane Chemical compound CCCC(OCC)(OCC)OCC KOPMZTKUZCNGFY-UHFFFAOYSA-N 0.000 claims description 3
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 claims description 3
- 239000008396 flotation agent Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003814 drug Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 10
- 239000010419 fine particle Substances 0.000 description 5
- 230000007774 longterm Effects 0.000 description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QBUKAFSEUHGMMX-MTJSOVHGSA-N (5z)-5-[[3-(1-hydroxyethyl)thiophen-2-yl]methylidene]-10-methoxy-2,2,4-trimethyl-1h-chromeno[3,4-f]quinolin-9-ol Chemical group C1=CC=2NC(C)(C)C=C(C)C=2C2=C1C=1C(OC)=C(O)C=CC=1O\C2=C/C=1SC=CC=1C(C)O QBUKAFSEUHGMMX-MTJSOVHGSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
- Medicinal Preparation (AREA)
- Lubricants (AREA)
Abstract
The invention relates to the technical field of flotation agents, and provides an environment-friendly coal dressing flotation agent which comprises the following components in parts by weight: 20-30 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 50-55 parts of epoxidized soybean acrylate, 1-3 parts of isobutyric acid, 1-3 parts of methyl palmitate, 2-3 parts of dioctyl terephthalate, 1-3 parts of 2-ethylhexanol, 40-50 parts of light diesel oil, 8-12.5 parts of kerosene for lamps, 1-3 parts of N-methylpyrrolidone, 0.5-0.8 part of polyvinyl alcohol, 15-20 parts of 1-hexadecanol, 0-6 parts of 2-phenyl-2 propanol, 12-15 parts of foaming agent and 40-60 parts of water. Through the technical scheme, the problems of poor coal dressing effect and high medicine consumption in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of flotation agents, in particular to an environment-friendly coal dressing flotation agent and a preparation method thereof.
Background
At present, most of power generation fuels and chemical raw materials in China still come from coal, and the coal still has a relatively important position in the economic development of China. The flotation method is a method for treating the fine-particle coal, which is a method for treating the fine-particle coal which is paid attention to at present, and the flotation method is a trend that the proportion of fine particles in raw coal entering a coal preparation factory is gradually increased along with the gradual increase of the proportion of fine particles in the raw coal preparation factory, and the coal preparation factory treated by the flotation method is in an ascending trend.
However, in the treatment and utilization of fine-grained coal slime in coal washery in China, petroleum products such as kerosene, diesel oil and the like are mainly added as flotation agents, so that the problems of low flotation efficiency and high drug consumption are generally existed. The traditional agent is used for floating the coal which is difficult to be separated into fine particles and has poor multiple effects, and the variety of the compound flotation agent is far from enough. The novel environment-friendly ore dressing agent (201910865379.5) is added with 1.0-1.5 kg/ton of coal, and the dosage is more, so that the searching of the novel efficient low-consumption flotation agent is important.
Disclosure of Invention
The invention provides an environment-friendly coal dressing flotation reagent and a preparation method thereof, and solves the problems of poor coal dressing effect and high medicine consumption in the related technology.
The technical scheme of the invention is as follows:
the environment-friendly coal dressing flotation reagent comprises the following components in parts by weight: 20-30 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 50-55 parts of epoxidized soybean acrylate, 1-3 parts of isobutyric acid, 1-3 parts of methyl palmitate, 2-3 parts of dioctyl terephthalate, 1-3 parts of 2-ethylhexanol, 40-50 parts of light diesel oil, 8-12.5 parts of kerosene for lamps, 1-3 parts of N-methylpyrrolidone, 0.5-0.8 part of polyvinyl alcohol, 15-20 parts of 1-hexadecanol, 0-6 parts of 2-phenyl-2 propanol, 12-15 parts of foaming agent and 40-60 parts of water.
As a further technical scheme, the mass ratio of the light diesel oil to the kerosene for lamps is (4-5): 1.
as a further technical scheme, the environment-friendly coal dressing flotation reagent comprises the following components in parts by weight: 22-26 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 52-55 parts of epoxidized soybean acrylate, 1-3 parts of isobutyric acid, 1-3 parts of methyl palmitate, 2-3 parts of dioctyl terephthalate, 1-3 parts of 2-ethylhexanol, 40-50 parts of light diesel oil, 8-10 parts of kerosene for lamps, 1-3 parts of N-methylpyrrolidone, 0.6-0.8 part of polyvinyl alcohol, 16-18 parts of 1-hexadecanol, 3-6 parts of 2-phenyl-2 propanol, 12-14 parts of foaming agent and 50-55 parts of water.
As a further technical scheme, the environment-friendly coal dressing flotation reagent comprises the following components in parts by weight: 24 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 53 parts of epoxidized soybean acrylate, 2 parts of isobutyric acid, 2 parts of methyl palmitate, 3 parts of dioctyl terephthalate, 2 parts of 2-ethylhexanol, 45 parts of light diesel oil, 9 parts of kerosene for lamps, 2 parts of N-methylpyrrolidone, 0.7 part of polyvinyl alcohol, 17 parts of 1-hexadecanol, 4 parts of 2-phenyl-2 propanol, 13 parts of foaming agent and 52 parts of water.
As a further technical scheme, the foaming agent is one or more of triethyloxybutane, methyl isobutyl carbinol or diisononyl phthalate.
As a further technical scheme, the dosage of the environment-friendly coal preparation flotation reagent is 0.5-0.7 kg/ton of coal.
The invention also provides a preparation method of the environment-friendly coal dressing flotation reagent, which comprises the following steps:
s1, adding N-methyl pyrrolidone and 1-hexadecanol into water, and stirring;
s2, adding light diesel oil and kerosene for lamps and stirring;
and S3, adding other components, stirring, and performing emulsification treatment to obtain the environment-friendly coal dressing flotation reagent.
As a further technical scheme, the stirring time in the steps S1, S2 and S3 is controlled to be 5-10min.
As a further technical scheme, the rotating speed during the emulsification treatment is 2500-3000r/min.
As a further technical scheme, the emulsification treatment time is 5-10min.
The beneficial effects of the invention are as follows:
1. the yield, the flotation perfection, the recovery rate of combustible gas and the long-term storage stability of the clean coal treated by the coal preparation flotation reagent are greatly improved, and the gray scale is also greatly reduced.
2. In the invention, the inventor finds that when the mass ratio of the light diesel oil to the kerosene for lamps is (4-5): 1, when N-methyl pyrrolidone is added, the three components are mutually cooperated, and the viscosity of the flotation agent is moderate and the flotation effect is good due to the fact that the viscosity of the light diesel oil is higher, but the reasonable proportion and the addition of the N-methyl pyrrolidone enable the viscosity of the flotation agent to be moderate.
3. According to the invention, the 2-phenyl-2-propanol and the polyvinyl alcohol are added, so that the stability of the flotation agent is improved, the flotation agent is not layered after long-term placement, the foaming agent is directionally arranged on a gas-liquid two-phase interface under the action of the polar groups, and the stability of bubbles is improved, so that the flotation effect is improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
S1, proportioning: 24 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 53 parts of epoxidized soybean acrylate, 2 parts of isobutyric acid, 2 parts of methyl palmitate, 3 parts of dioctyl terephthalate, 2 parts of 2-ethylhexanol, 45 parts of light diesel oil, 9 parts of kerosene for lamps, 2 parts of N-methylpyrrolidone, 0.7 part of polyvinyl alcohol, 17 parts of 1-hexadecanol, 4 parts of 2-phenyl-2 propanol, 13 parts of foaming agent and 52 parts of water; the foaming agent is triethyloxybutane;
s2, adding N-methyl pyrrolidone and 1-hexadecanol into water, and stirring for 5min;
s3, adding light diesel oil and kerosene for lamps, and stirring for 5min;
s4, adding other components, stirring for 5min, and performing emulsification treatment at the rotating speed of 2800r/min for 5min to obtain the environment-friendly coal dressing flotation reagent.
Example 2
S1, proportioning: 26 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 52 parts of epoxidized soybean acrylate, 3 parts of isobutyric acid, 1 part of methyl palmitate, 3 parts of dioctyl terephthalate, 3 parts of 2-ethylhexanol, 50 parts of light diesel oil, 10 parts of kerosene for lamps, 1 part of N-methylpyrrolidone, 0.8 part of polyvinyl alcohol, 20 parts of 1-hexadecanol, 15 parts of foaming agent and 40 parts of water; the foaming agent is methyl isobutyl carbinol;
s2, adding N-methyl pyrrolidone and 1-hexadecanol into water, and stirring for 10min;
s3, adding light diesel oil and kerosene for lamps, and stirring for 10min;
s4, adding other components, stirring for 10min, and performing emulsification treatment at a rotating speed of 3000r/min for 10min to obtain the environment-friendly coal dressing flotation reagent.
Example 3
S1, proportioning: 22 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 55 parts of epoxidized soybean acrylate, 1 part of isobutyric acid, 3 parts of methyl palmitate, 2 parts of dioctyl terephthalate, 1 part of 2-ethylhexanol, 50 parts of light diesel oil, 12.5 parts of kerosene for lamps, 3 parts of N-methylpyrrolidone, 0.5 part of polyvinyl alcohol, 15 parts of 1-hexadecanol, 6 parts of 2-phenyl-2 propanol, 12 parts of foaming agent and 60 parts of water; the foaming agent is methyl isobutyl carbinol;
s2, adding N-methyl pyrrolidone and 1-hexadecanol into water, and stirring for 7min;
s3, adding light diesel oil and kerosene for lamps, and stirring for 10min;
s4, adding other components, stirring for 7min, and performing emulsification treatment at the rotating speed of 2500r/min for 10min to obtain the environment-friendly coal dressing flotation reagent.
Example 4
S1, proportioning: 30 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 50 parts of epoxidized soybean acrylate, 3 parts of isobutyric acid, 1 part of methyl palmitate, 2 parts of dioctyl terephthalate, 1 part of 2-ethylhexanol, 40 parts of light diesel oil, 10 parts of kerosene for lamps, 3 parts of N-methylpyrrolidone, 0.6 part of polyvinyl alcohol, 16 parts of 1-hexadecanol, 3 parts of 2-phenyl-2 propanol, 14 parts of foaming agent and 50 parts of water; the foaming agent is methyl isobutyl carbinol;
s2, adding N-methyl pyrrolidone and 1-hexadecanol into water, and stirring for 6min;
s3, adding light diesel oil and kerosene for lamps, and stirring for 8min;
s4, adding other components, stirring for 8min, and performing emulsification treatment at the rotating speed of 2600r/min for 10min to obtain the environment-friendly coal dressing flotation reagent.
Example 5
S1, proportioning: 20 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 50 parts of epoxidized soybean acrylate, 1 part of isobutyric acid, 1 part of methyl palmitate, 3 parts of dioctyl terephthalate, 2 parts of 2-ethylhexanol, 40 parts of light diesel oil, 10 parts of kerosene for lamps, 1 part of N-methylpyrrolidone, 0.8 part of polyvinyl alcohol, 18 parts of 1-hexadecanol, 4 parts of 2-phenyl-2 propanol, 13 parts of foaming agent and 55 parts of water; the foaming agent is diisononyl phthalate;
s2, adding N-methyl pyrrolidone and 1-hexadecanol into water, and stirring for 8min;
s3, adding light diesel oil and kerosene for lamps, and stirring for 6min;
s4, adding other components, stirring for 8min, and performing emulsification treatment at the rotating speed of 2600r/min for 8min to obtain the environment-friendly coal dressing flotation reagent.
Comparative example 1
2-phenyl-2-propanol was replaced with an equivalent amount of 1-hexadecanol as in example 1, except that the same procedure was used as in example 1.
Comparative example 2
The polyvinyl alcohol was replaced with an equivalent amount of ethylene oxide as in example 1, and the other was the same as in example 1.
Comparative example 3
The amount of kerosene for lamp was adjusted to 18 parts as compared with example 1, and the other is the same as in example 1.
Comparative example 4
In contrast to example 1, N-methylpyrrolidone was not added, and the other steps were the same as in example 1.
Experimental example 1
The coal preparation flotation reagent of the examples and the comparative examples is tested, the coal sample is 1/3 coking coal, the ash content of the feed is 32.20%, the analysis coal sample with the particle size of 0.5mm is prepared according to the preparation method of GB 474-2008 coal sample, the ore pulp concentration is 100g/L, the addition amount of the coal preparation flotation reagent is 0.6g/kg coal according to the GB 4757-2013 laboratory unit flotation test method, and the coal preparation flotation reagent is naturally kept stand for 24 hours at room temperature and is vibrated at proper time. The stability of the agent was evaluated by observing whether the agent delaminated. The experimental test results are shown in table 1.
Table 1 test results of examples and comparative examples
As can be seen from Table 1, the yield, the flotation perfection, the recovery rate of combustible gas and the long-term storage stability of the clean coal treated by the coal preparation flotation agent prepared in the embodiment 1 of the invention are greatly improved, and the gray scale is also greatly reduced. In example 2 of the present invention, 2-phenyl-2-propanol was not added, and in comparative example 1, 2-phenyl-2-propanol was replaced with 1-hexadecanol, and the stability of the obtained flotation reagent was lowered, and it was found that the addition of 2-phenyl-2-propanol improved the stability of the flotation reagent and the flotation effect. In comparative example 2, the substitution of polyvinyl alcohol with an equivalent amount of ethylene oxide, although improving the stability of the flotation agent, was found by experimental investigation that polyvinyl alcohol could improve the treatment effect on clean coal to a greater extent due to the synergistic effect of polyvinyl alcohol with 2-phenyl-2 propanol. Whereas the ratio of light diesel oil and kerosene for lamps was changed in comparative example 3, it was found that the two could perform the best one with the other only within the scope of the present invention. In comparative example 4, the stability was lowered and the treatment effect on clean coal was also lowered without adding N-methylpyrrolidone.
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 (9)
1. An environment-friendly coal dressing flotation reagent is characterized by comprising the following components in parts by weight: 20-30 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 50-55 parts of epoxidized soybean acrylate, 1-3 parts of isobutyric acid, 1-3 parts of methyl palmitate, 2-3 parts of dioctyl terephthalate, 1-3 parts of 2-ethylhexanol, 40-50 parts of light diesel oil, 8-12.5 parts of kerosene for lamps, 1-3 parts of N-methylpyrrolidone, 0.5-0.8 part of polyvinyl alcohol, 15-20 parts of 1-hexadecanol, 3-6 parts of 2-phenyl-2 propanol, 12-15 parts of foaming agent and 40-60 parts of water;
the mass ratio of the light diesel oil to the kerosene for lamps is (4-5): 1.
2. the environment-friendly coal dressing flotation reagent according to claim 1, which is characterized by comprising the following components in parts by weight: 22-26 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 52-55 parts of epoxidized soybean acrylate, 1-3 parts of isobutyric acid, 1-3 parts of methyl palmitate, 2-3 parts of dioctyl terephthalate, 1-3 parts of 2-ethylhexanol, 40-50 parts of light diesel oil, 8-10 parts of kerosene for lamps, 1-3 parts of N-methylpyrrolidone, 0.6-0.8 part of polyvinyl alcohol, 16-18 parts of 1-hexadecanol, 3-6 parts of 2-phenyl-2 propanol, 12-14 parts of foaming agent and 50-55 parts of water.
3. The environment-friendly coal dressing flotation reagent according to claim 1, which is characterized by comprising the following components in parts by weight: 24 parts of 2, 4-trimethyl-1, 3-pentanediol dimethacrylate, 53 parts of epoxidized soybean acrylate, 2 parts of isobutyric acid, 2 parts of methyl palmitate, 3 parts of dioctyl terephthalate, 2 parts of 2-ethylhexanol, 45 parts of light diesel oil, 9 parts of kerosene for lamps, 2 parts of N-methylpyrrolidone, 0.7 part of polyvinyl alcohol, 17 parts of 1-hexadecanol, 4 parts of 2-phenyl-2 propanol, 13 parts of foaming agent and 52 parts of water.
4. An environmentally friendly coal preparation flotation reagent according to any one of claims 1 to 3 wherein the frothing agent is one or more of triethyloxybutane, methyl isobutyl carbinol or diisononyl phthalate.
5. An environmentally friendly coal preparation flotation reagent according to any one of claims 1 to 3 wherein the amount of environmentally friendly coal preparation flotation reagent is 0.5 to 0.7 kg/ton of coal.
6. The method for preparing the environment-friendly coal dressing flotation reagent according to claim 1, which is characterized by comprising the following steps:
s1, adding N-methyl pyrrolidone and 1-hexadecanol into water, and stirring;
s2, adding light diesel oil and kerosene for lamps and stirring;
and S3, adding other components, stirring, and performing emulsification treatment to obtain the environment-friendly coal dressing flotation reagent.
7. The method for preparing the environment-friendly coal dressing flotation reagent according to claim 6, wherein the stirring time in the steps S1, S2 and S3 is controlled to be 5-10min.
8. The method for preparing the environment-friendly coal dressing flotation reagent according to claim 6, wherein the rotating speed is 2500-3000r/min during the emulsification treatment.
9. The method for preparing the environment-friendly coal dressing flotation reagent according to claim 6, wherein the emulsification treatment time is 5-10min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB9106747D0 (en) * | 1991-03-28 | 1991-05-15 | Fospur Ltd | Froth flotation of fine particles |
| US6799682B1 (en) * | 2000-05-16 | 2004-10-05 | Roe-Hoan Yoon | Method of increasing flotation rate |
| US9441175B2 (en) * | 2012-03-28 | 2016-09-13 | Tata Steel Limited | Process for production of low ash clean coal from high ash coal with total solvent recovery |
| CN105562215A (en) * | 2016-03-10 | 2016-05-11 | 徐州工程学院 | Novel coal dressing foaming agent and preparation method thereof |
| CN110193426A (en) * | 2019-05-10 | 2019-09-03 | 唐山市德丰机械设备有限公司 | A kind of environment-friendly type floating agent |
| CN110575910B (en) * | 2019-09-12 | 2020-08-11 | 山东巨野友邦实业有限公司 | Novel environment-friendly mineral separation agent |
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