CN110681493B - Efficient flotation collector for coal - Google Patents
Efficient flotation collector for coal Download PDFInfo
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- CN110681493B CN110681493B CN201911147092.5A CN201911147092A CN110681493B CN 110681493 B CN110681493 B CN 110681493B CN 201911147092 A CN201911147092 A CN 201911147092A CN 110681493 B CN110681493 B CN 110681493B
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- coal
- oil
- emulsifier
- flotation
- oleic 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
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
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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
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- 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
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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
- 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
Abstract
The invention discloses a high-efficiency flotation collector for coal, which comprises the following components in percentage by weight: the biomass diesel oil, the epoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator are as follows by mass percent: 80-85% of biomass diesel oil, 8-12% of epoxidized soybean oil, 3-4% of vegetable oleic acid, 1-2% of emulsifier and 1-2% of activator; according to the invention, the biomass diesel oil is used as a basic raw material, the vegetable oleic acid, the emulsifier and the sodium dodecyl benzene sulfonate are added to be uniformly stirred and mixed at normal temperature (20-25 ℃) to produce the efficient coal flotation collecting agent, and the coal is floated after the collecting agent is emulsified, so that the contact angle of the surface of coal particles can be increased, the hydrophobicity of the surface of the coal particles is improved, the selective mineralization process is strengthened, and the method is suitable for coal slime flotation in a coal type and wide particle size range. The flotation efficient collecting agent for MG series coal can obviously improve the flotation efficiency of coal slime, and the unit consumption of dry coal slime per ton is reduced by more than 1/3 compared with the traditional petrochemical oil (diesel oil or kerosene).
Description
Technical Field
The invention relates to the technical field of coal washing, in particular to a high-efficiency flotation collector for coal.
Background
Coal washing is an indispensable procedure for coal deep processing, coal directly mined from a mine is called raw coal, a plurality of impurities are mixed in the raw coal during mining, the quality of the coal is different, and the coal with small inherent ash content and the coal with large inherent ash content are mixed together. Coal washing is an industrial process for removing impurities in raw coal or classifying high-quality coal and low-quality coal. The existing coal dressing generally uses petrochemicals (diesel oil or kerosene) with resources being in high demand as a collecting agent for coal flotation, has the problems of high unit consumption, poor selectivity and adaptability, low flotation extraction rate and high resource waste, and particularly has poor effect on certain coal types, low flash point and high safety in use in a production field. Therefore, the design of the efficient flotation collector for coal is very necessary.
Disclosure of Invention
The invention aims to provide a high-efficiency flotation collector for coal, which solves the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the high-efficiency flotation collector for coal comprises the following formula: the biomass diesel oil, the epoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator are as follows by mass percent: 80-85% of biomass diesel oil, 8-12% of epoxidized soybean oil, 3-4% of vegetable oleic acid, 1-2% of emulsifier and 1-2% of activator.
According to the technical scheme, the manufacturing method of the efficient coal flotation collector comprises the following steps:
1) under the condition of 20-25 ℃, respectively weighing the deoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator according to the percentage of the raw materials, sequentially adding the deoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator into a container, and stirring the materials for 10min at normal temperature to form a formula solution;
2) adding the biomass diesel oil into a container with a stirring mechanism according to the mass percentage at the temperature of 20-25 ℃, starting the stirring mechanism, adding the rest formula solution into the container, and stirring for 30min to form a uniform and stable product.
According to the technical scheme, the flash point of the flotation collector is 75.5 ℃.
According to the technical scheme, the biodiesel is regenerated biodiesel.
According to the technical scheme, the epoxidized soybean oil is called ESO for short, and the molecular formula is as follows: c57H106O10。
According to the technical scheme, the vegetable oil acid is: type Y-4.
According to the technical scheme, the emulsifier is OP oil.
According to the technical scheme, the active agent is sodium dodecyl benzene sulfonate.
Compared with the prior art, the invention has the following beneficial effects:
1. the regenerated biomass diesel oil is used as a collecting agent for coal instead of petrochemical oil (diesel oil or kerosene), so that the petroleum resource is saved, and the recycling economy is realized;
2. the mixture formed by compounding at normal temperature (20-25 ℃) can be stored for a long time, has strong operability and is convenient to popularize and apply;
3. the unit consumption of dry coal slime per ton is reduced by more than 1/3 compared with the traditional petrochemical oil (diesel oil or kerosene);
4. under the condition of saving oil consumption and unit consumption, the selectivity is strong, the extraction rate of flotation clean coal can be improved by 1-3%, the ash content of concentrate is reduced, the ash content of tailings is improved, and considerable economic benefit is increased for enterprises;
5. the adaptability is strong, and good effects can be achieved on flotation under different flotation conditions;
6. has a certain defoaming function, and is beneficial to the subsequent dehydration operation;
7. the non-flammable and non-explosive product has no pungent smell, is safe and environment-friendly, and is beneficial to safe production and occupational health of workers.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
figure 1 is a graph comparing the present invention with kerosene usage.
In the figure: the black bar graph is the invention; the diagonal bar graph is kerosene.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
example 1:
the high-efficiency flotation collector for coal comprises the following formula: the biomass diesel oil, the epoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator are as follows by mass percent: 80% of biomass diesel oil, 12% of epoxidized soybean oil, 4% of vegetable oleic acid, 2% of emulsifier and 2% of activator.
According to the technical scheme, the manufacturing method of the efficient flotation collector for the coal comprises the following steps:
1) under the condition of 20-25 ℃, the raw materials are as follows according to the mass percentage: weighing raw materials of 80% of biomass diesel, 12% of epoxidized soybean oil, 4% of vegetable oleic acid, 2% of emulsifier and 2% of activator, sequentially adding the epoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator into a container, and stirring for 10min at normal temperature to form a formula solution;
2) adding 82% of biomass diesel oil into a container with a stirring mechanism at the temperature of 20-25 ℃, starting the stirring mechanism, adding the rest of formula solution into the container, and stirring for 30min to form a uniform and stable product.
Wherein the flash point of the flotation collector is 75.5 ℃; the biomass diesel is regenerated biodiesel; epoxidized soybean oil, abbreviated as ESO, has the molecular formula: c57H106O10(ii) a The vegetable oil acid is: type Y-4; the emulsifier is OP oil; the active agent is sodium dodecyl benzene sulfonate.
Example 2:
the high-efficiency flotation collector for coal comprises the following formula: the biomass diesel oil, the epoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator are as follows by mass percent: 82% of biomass diesel oil, 12% of epoxidized soybean oil, 3% of vegetable oleic acid, 1.5% of emulsifier and 1.5% of activator.
According to the technical scheme, the manufacturing method of the efficient flotation collector for the coal comprises the following steps:
1) under the condition of 20-25 ℃, the raw materials are as follows according to the mass percentage: weighing raw materials of 82% of biomass diesel, 12% of epoxidized soybean oil, 3% of vegetable oleic acid, 1.5% of emulsifier and 1.5% of activator, sequentially adding the epoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator into a container, and stirring at normal temperature for 10min to form a formula solution;
2) adding 82% of biomass diesel oil into a container with a stirring mechanism at the temperature of 20-25 ℃, starting the stirring mechanism, adding the rest of formula solution into the container, and stirring for 30min to form a uniform and stable product.
Wherein the flash point of the flotation collector is 75.5 ℃; the biomass diesel is regenerated biodiesel; epoxidized soybean oil, abbreviated as ESO, has the molecular formula: c57H106O10(ii) a The vegetable oil acid is: type Y-4; the emulsifier isOP oil; the active agent is sodium dodecyl benzene sulfonate.
Example 3:
the high-efficiency flotation collector for coal comprises the following formula: the biomass diesel oil, the epoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator are as follows by mass percent: 85% of biomass diesel oil, 10% of epoxidized soybean oil, 3% of vegetable oleic acid, 1% of emulsifier and 1% of activator.
According to the technical scheme, the manufacturing method of the efficient flotation collector for the coal comprises the following steps:
1) under the condition of 20-25 ℃, the raw materials are as follows according to the mass percentage: weighing raw materials of 85% of biomass diesel, 10% of epoxidized soybean oil, 3% of vegetable oleic acid, 1% of emulsifier and 1% of activator, sequentially adding the epoxidized soybean oil, the vegetable oleic acid, the emulsifier and the activator into a container, and stirring for 10min at normal temperature to form a formula solution;
2) adding 82% of biomass diesel oil into a container with a stirring mechanism at the temperature of 20-25 ℃, starting the stirring mechanism, adding the rest of formula solution into the container, and stirring for 30min to form a uniform and stable product.
Wherein the flash point of the flotation collector is 75.5 ℃; the biomass diesel is regenerated biodiesel; epoxidized soybean oil, abbreviated as ESO, has the molecular formula: c57H106O10(ii) a The vegetable oil acid is: type Y-4; the emulsifier is OP oil; the active agent is sodium dodecyl benzene sulfonate.
The finished products of the above examples are compared as follows:
| acute toxicity grading | Flash point/. degree.C | Rate of decrease in fuel consumption | Flotation extraction rate increase ratio/%) | |
| Example 1 | Low toxicity grade | 75.5 | 1/3 | 1-3 |
| Example 2 | Low toxicity grade | 75.5 | 1/3 | 1-3 |
| Example 3 | Low toxicity grade | 75.5 | 1/3 | 1-3 |
Based on the above, the invention takes the biomass diesel oil as the basic raw material, adds the vegetable oleic acid, the emulsifier and the sodium dodecyl benzene sulfonate, stirs and mixes the mixture evenly at normal temperature (20-25 ℃) to produce the high-efficiency collector for coal flotation, and according to the coal flotation after the collector is emulsified, the contact angle of the surface of the coal particles can be increased, thereby improving the hydrophobicity of the surface of the coal particles, strengthening the selective mineralization process and being suitable for the coal slime flotation in the coal type and wide particle size range. The flotation efficient collecting agent for MG series coal can obviously improve the flotation efficiency of coal slime, and the unit consumption of dry coal slime per ton is reduced by more than 1/3 compared with the traditional petrochemical oil (diesel oil or kerosene).
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The high-efficiency flotation collector for coal comprises the following formula: the biomass diesel oil, epoxidized soybean oil, vegetable oleic acid, emulsifier and activator, and the preparation method is characterized by comprising the following steps: the weight percentages of the components are respectively as follows: 80-85% of biomass diesel oil, 8-12% of epoxidized soybean oil, 3-4% of vegetable oleic acid, 1-2% of emulsifier and 1-2% of activator;
the preparation method of the efficient flotation collector for coal comprises the following steps:
1) respectively weighing epoxidized soybean oil, vegetable oleic acid, an emulsifier and an activator according to the mass percentage of the raw materials, sequentially adding the raw materials into a container, and stirring the mixture for 10min at normal temperature to form a formula solution;
2) under the condition of 20-25 ℃, adding the biomass diesel oil into a container with a stirring mechanism according to the mass percentage, starting the stirring mechanism, adding the formula solution into the container, and stirring for 30min to form a uniform and stable product;
the flash point of the flotation collector is 75.5 ℃;
the active agent is sodium dodecyl benzene sulfonate.
2. The high-efficiency flotation collector for coal according to claim 1, wherein the collector comprises: the biodiesel is regenerated biodiesel.
3. The high-efficiency flotation collector for coal according to claim 1, wherein the collector comprises: the vegetable oil acid is: type Y-4.
4. The high-efficiency flotation collector for coal according to claim 1, wherein the collector comprises: the emulsifier is OP oil.
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| CN113171878A (en) * | 2021-04-26 | 2021-07-27 | 淮北市美丽新材料有限公司 | GH type non-toxic environment-friendly efficient coal dressing collecting agent |
| CN114870999B (en) * | 2022-05-07 | 2023-06-27 | 南方科技大学 | Coal flotation reagent, preparation method thereof and coal flotation method |
Citations (5)
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|---|---|---|---|---|
| GB2092918A (en) * | 1981-02-16 | 1982-08-25 | Oeresund Kryolit | A process for the separation of coal particles from fly ash by flotation |
| CN102847612A (en) * | 2012-03-23 | 2013-01-02 | 太原理工大学 | Biodiesel for coal flotation and preparation method of biodiesel |
| CN103056033A (en) * | 2013-01-25 | 2013-04-24 | 山东科技大学 | Coal slime microemulsion collecting agent and preparation method thereof |
| CN107597446A (en) * | 2017-08-31 | 2018-01-19 | 常州欧康铭化工有限公司 | A kind of coal slime collecting agent |
| CN109127148A (en) * | 2018-08-21 | 2019-01-04 | 中国矿业大学 | Jet coal coal slime flotation collector and preparation method, jet coal coal slime flotation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6799682B1 (en) * | 2000-05-16 | 2004-10-05 | Roe-Hoan Yoon | Method of increasing flotation rate |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2092918A (en) * | 1981-02-16 | 1982-08-25 | Oeresund Kryolit | A process for the separation of coal particles from fly ash by flotation |
| CN102847612A (en) * | 2012-03-23 | 2013-01-02 | 太原理工大学 | Biodiesel for coal flotation and preparation method of biodiesel |
| CN103056033A (en) * | 2013-01-25 | 2013-04-24 | 山东科技大学 | Coal slime microemulsion collecting agent and preparation method thereof |
| CN107597446A (en) * | 2017-08-31 | 2018-01-19 | 常州欧康铭化工有限公司 | A kind of coal slime collecting agent |
| CN109127148A (en) * | 2018-08-21 | 2019-01-04 | 中国矿业大学 | Jet coal coal slime flotation collector and preparation method, jet coal coal slime flotation method |
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