CN108927290B - Coal dressing collector and preparation method thereof - Google Patents

Coal dressing collector and preparation method thereof Download PDF

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Publication number
CN108927290B
CN108927290B CN201711378210.4A CN201711378210A CN108927290B CN 108927290 B CN108927290 B CN 108927290B CN 201711378210 A CN201711378210 A CN 201711378210A CN 108927290 B CN108927290 B CN 108927290B
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coal
raw materials
glyceride
oil
squalene
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CN108927290A (en
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姜效军
李伟
施国学
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Liaoning Debas Industrial Co ltd
Shanxi Jinmei Technology Co ltd
XISHAN COAL ELECTRICITY GROUP CO Ltd
Shanxi Coking Coal Group Co Ltd
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Shanxi Jinmei Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/001Flotation agents
    • B03D1/004Organic compounds
    • B03D1/008Organic compounds containing oxygen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/02Collectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02Ores
    • B03D2203/04Non-sulfide ores
    • B03D2203/08Coal ores, fly ash or soot

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  • Edible Oils And Fats (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Fats And Perfumes (AREA)

Abstract

The invention provides a coal dressing collecting agent and a preparation method thereof, belongs to the technical field of coal flotation agents, and aims to solve the technical problems of poor dispersibility in water, poor collecting effect, low recovery rate of clean coal, danger, high production cost and the like of the conventional collecting agent. The coal dressing collecting agent consists of the following raw materials in parts by weight: 5-15% of squalene glyceride, 10-25% of sterol glyceride, 10-30% of isolongifolan ethyl ether and 30-65% of hydrocarbon oil mixture of C7-C16. The preparation method comprises the following steps: step 1, weighing the raw materials in parts by weight; step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 10-40 ℃, and the rotating speed during stirring is 20-60 r/min; and 3, storing the stirred product into a finished product tank. The invention has the advantages of higher safety coefficient, convenient use, good collecting effect, high recovery rate of clean coal, capability of improving the ash content of the tail coal, environmental protection and the like.

Description

Coal dressing collector and preparation method thereof
Technical Field
The invention relates to the technical field of coal flotation agents, in particular to a coal dressing collecting agent and a preparation method thereof.
Background
In the coal flotation stage, 0-0.4mm fine coal slime is contacted and adsorbed with a collecting agent and a foaming agent, the fine coal slime is throttled and aspirated by a mineralizer to form bubbles, hydrophobic coal particles are attached to the bubbles and rise to a foam tank along with the bubbles to form concentrate, and hydrophilic gangue particles are discharged from the lower part along with tailings, so that the separation effect is achieved. The collector is a flotation agent which changes the hydrophobicity of the surface of the mineral and enables floating mineral particles to be adhered to the air bubbles. The collector plays a crucial role in the flotation yield of the clean coal.
Most of the current collectors are petroleum products, mainly including kerosene, diesel oil and some artificially synthesized non-polar oil collectors. However, because of poor dispersibility of kerosene and diesel oil in water, an adsorption film formed on coal slime particles is incomplete, the hydrophobicity is not ideal, and the separation effect is poor; meanwhile, the kerosene and the diesel oil are flammable and explosive dangerous goods, so that the danger is high and the use is inconvenient; the nonpolar oil collecting agent has low activity in the coal preparation process, large medicament dosage, poor collecting effect, high production cost and low recovery rate of clean coal.
Disclosure of Invention
The invention aims to solve the technical problems of poor dispersibility in water, poor collecting effect, low recovery rate of clean coal, danger, high production cost and the like of the conventional collecting agent and provides a coal dressing collecting agent and a preparation method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that:
a coal dressing collecting agent is composed of the following raw materials in parts by weight: 5-15% of squalene glyceride, 10-25% of sterol glyceride, 10-30% of isolongifolan ethyl ether and 30-65% of hydrocarbon oil mixture of C7-C16.
A preparation method of a coal dressing collector comprises the following steps:
step 1, weighing the following raw materials in parts by weight: 5-15% of squalene glyceride, 10-25% of sterol glyceride, 10-30% of isolongifolan ethyl ether and 30-65% of hydrocarbon oil of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 10-40 ℃, and the rotating speed during stirring is 20-60 r/min;
and 3, storing the stirred product into a finished product tank.
Further, the squalene fatty acid glyceride is a fraction extracted by heating vegetable oil to 220-270 ℃ and having a density of 0.95-0.98 g/cm 3; the sterene glyceride is a fraction extracted by heating vegetable oil to 160-190 ℃ and having a density of 0.92-0.95 g/cm 3; the isolongifolyl ethyl ether is a fraction which is extracted by heating vegetable oil to 120-150 ℃ and has a density of 0.89-0.93 g/cm 3; the mixture of the hydrocarbon oil of C7-C16 is a product extracted from petroleum, the density of the product is 0.85-0.87 g/cm3, and the distillation range of the product is 100-300 ℃.
Further, the vegetable oil is rice bran oil, peanut oil or castor oil.
The invention has the beneficial effects that:
the invention adopts non-flammable raw materials, so the safety coefficient is higher and the use is convenient. In addition, the raw materials in the invention are cheap, so that the coal dressing collector has lower cost. Industrial tests show that the coal dressing collecting effect is good, the recovery rate of clean coal is high, and the ash content of the tail coal can be improved. In addition, the invention adopts environment-friendly raw materials and has no pollution to the environment. Therefore, compared with the background art, the invention has the advantages of higher safety coefficient, convenient use, good collecting effect, high clean coal recovery rate, capability of improving the ash content of the tail coal, environmental protection and the like.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
The coal dressing collecting agent in the embodiment is composed of the following raw materials in parts by weight: 5-15% of squalene glyceride, 10-25% of sterol glyceride, 10-30% of isolongifolan ethyl ether and 30-65% of hydrocarbon oil mixture of C7-C16.
Wherein the squalene fatty ester is vegetable oil heated to 220-270 deg.C, and has extraction density of 0.95-0.98 g/cm3A fraction of (a); the steryl olefine acid glyceride is vegetable oil which is heated to 160-190 ℃ and the density of extraction is 0.92-0.95 g/cm3A fraction of (a); the isolongifolyl ethyl ether is extracted by heating vegetable oil to 120-150 ℃ and the density of the extracted vegetable oil is 0.89-0.93 g/cm3A fraction of (a); the mixture of the C7-C16 hydrocarbon oil is extracted from petroleum and has the density of 0.85-0.87 g/cm3And the distillation range is 100-300 ℃. Optionally, the vegetable oil is rice bran oil, peanut oil or castor oil.
The preparation method of the coal dressing collector in the embodiment comprises the following steps:
step 1, weighing the following raw materials in parts by weight: 5-15% of squalene glyceride, 10-25% of sterol glyceride, 10-30% of isolongifolan ethyl ether and 30-65% of hydrocarbon oil mixture of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 10-40 ℃, and the rotating speed during stirring is 20-60 r/min;
and 3, storing the stirred product into a finished product tank.
The preparation process adopts an electronic numerical control system, can automatically control parameters such as reaction temperature, time, rotating speed and the like, and is convenient for automatic control.
Example 2
The coal dressing collecting agent in the embodiment is composed of the following raw materials in parts by weight: 5% of squalene fatty acid glyceride, 10% of sterol fatty acid glyceride, 20% of isolongifolan ethyl ether and 65% of hydrocarbon oil of C7-C16.
The preparation method of the coal dressing collector in the embodiment comprises the following steps:
step 1, weighing the following raw materials in parts by weight: 5% of squalene fatty acid glyceride, 10% of sterol fatty acid glyceride, 20% of isolongifolan ethyl ether and 65% of hydrocarbon oil of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 10 ℃, and the rotating speed during stirring is 20 r/min;
and 3, storing the stirred product into a finished product tank.
The squalene fatty ester is prepared by heating castor oil to 220-270 deg.C, and extracting to density of 0.95-0.98 g/cm3A fraction of (a); the steryl glyceride is castor oil which is heated to 160-190 ℃ and extracted at the density of 0.92-0.95 g/cm3A fraction of (a); the isolongifolyl ethyl ether is extracted by heating castor oil to 120-150 ℃ and has the density of 0.89-0.93 g/cm3A fraction of (a); the mixture of the C7-C16 hydrocarbon oil is extracted from petroleum and has the density of 0.85-0.87 g/cm3And the distillation range is 100-300 ℃. Optionally, the vegetable oil is rice bran oil, peanut oil or castor oil.
Example 3
The coal dressing collecting agent in the embodiment is composed of the following raw materials in parts by weight: 15% of squalene fatty acid glyceride, 25% of sterol fatty acid glyceride, 30% of isolongifolan ethyl ether and 30% of hydrocarbon oil of C7-C16.
The preparation method of the coal dressing collector in the embodiment comprises the following steps of 1:
step 1, weighing the following raw materials in parts by weight: 15% of squalene fatty acid glyceride, 25% of sterol fatty acid glyceride, 30% of isolongifolan ethyl ether and 30% of hydrocarbon oil of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 40 ℃, and the rotating speed during stirring is 60 r/min;
and 3, storing the stirred product into a finished product tank.
The mixture of glyceryl squalene, glyceryl sterenoate, isolongifolol ethyl ether and hydrocarbon oil C7-C16 was the same as in example 2.
Example 4
The coal dressing collecting agent in the embodiment is composed of the following raw materials in parts by weight: 10% of glyceryl squalene oleate, 20% of glyceryl sterenoate, 20% of isolongifolan ethyl ether and 50% of a mixture of hydrocarbon oils of C7-C16.
The preparation method of the coal dressing collector in the embodiment comprises the following steps of 1:
step 1, weighing the following raw materials in parts by weight: 10% of squalene fatty acid glyceride, 20% of sterol fatty acid glyceride, 20% of isolongifolan ethyl ether and 50% of hydrocarbon oil of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 30 ℃, and the rotating speed during stirring is 50 r/min;
and 3, storing the stirred product into a finished product tank.
The mixture of glyceryl squalene, glyceryl sterenoate, isolongifolol ethyl ether and hydrocarbon oil C7-C16 was the same as in example 2.
Example 5
The coal dressing collecting agent in the embodiment is composed of the following raw materials in parts by weight: 15% of squalene fatty acid glyceride, 10% of sterol fatty acid glyceride, 10% of isolongifolan ethyl ether and 65% of hydrocarbon oil of C7-C16.
The preparation method of the coal dressing collector in the embodiment comprises the following steps:
step 1, weighing the following raw materials in parts by weight: 15% of squalene fatty acid glyceride, 10% of sterol fatty acid glyceride, 10% of isolongifolan ethyl ether and 65% of hydrocarbon oil of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 25 ℃, and the rotating speed during stirring is 30 r/min;
and 3, storing the stirred product into a finished product tank.
The mixture of glyceryl squalene, glyceryl sterenoate, isolongifolol ethyl ether and hydrocarbon oil C7-C16 was the same as in example 2.
Example 6
The coal dressing collecting agent in the embodiment is composed of the following raw materials in parts by weight: 10% of glyceryl squalene oleate, 25% of glyceryl sterenoate, 20% of isolongifolan ethyl ether and 45% of a mixture of hydrocarbon oils of C7-C16.
The preparation method of the coal dressing collector in the embodiment comprises the following steps:
step 1, weighing the following raw materials in parts by weight: 10% of squalene fatty acid glyceride, 25% of sterol fatty acid glyceride, 20% of isolongifolan ethyl ether and 45% of hydrocarbon oil of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 20 ℃, and the rotating speed during stirring is 40 r/min;
and 3, storing the stirred product into a finished product tank.
The mixture of glyceryl squalene, glyceryl sterenoate, isolongifolol ethyl ether and hydrocarbon oil C7-C16 was the same as in example 2.
Example 7
The coal dressing collecting agent in the embodiment is composed of the following raw materials in parts by weight: 12% of glyceryl squalene oleate, 18% of glyceryl sterenoate, 30% of isolongifolan ethyl ether and 40% of a mixture of hydrocarbon oils of C7-C16.
The preparation method of the coal dressing collector in the embodiment comprises the following steps:
step 1, weighing the following raw materials in parts by weight: 12% of squalene fatty acid glyceride, 18% of sterol fatty acid glyceride, 30% of isolongifolan ethyl ether and 40% of hydrocarbon oil of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 35 ℃, and the rotating speed during stirring is 50 r/min;
and 3, storing the stirred product into a finished product tank.
The mixture of glyceryl squalene, glyceryl sterenoate, isolongifolol ethyl ether and hydrocarbon oil C7-C16 was the same as in example 2.
In order to verify the flotation effect of the coal dressing collector provided by the embodiment, the applicant conducts multiple laboratory flotation searches on coal slurry in a certain coal dressing plant, and finds that the collector has ideal effect, and can achieve the purposes of improving the recovery rate of clean coal and improving the ash content of tail coal under the condition of ore pulp with the concentration of 50-150 g/L, wherein table 1 shows the test results when kerosene and the coal dressing collector provided by the invention are used for the ore pulp with the same concentration, and the selected ash content is 15.2% (flotation tank 1.5L) in the test of table 1.
Watch 1
Figure BDA0001515064850000061
From table 1, the coal dressing collector of the invention shows that the recovery rate of clean coal is increased, and the ash content of the tail coal is obviously improved.
The invention can also show better clean coal recovery rate and higher tailing ash when the concentration of the ore pulp is higher, such as when the concentration of the ore pulp is increased to 120 g/L, see table 2, the ash content of the selected coal slime in table 2 is 15.2% (flotation tank 1.5L).
Watch two
Figure BDA0001515064850000071
In addition, experiments show that the coal dressing collector disclosed by the invention is used for carrying out flotation on the coal which is extremely difficult to be dressed and has 14-17% of ash content in the Dongqu coal dressing plant, the obtained refined coal is about 11%, and the recovery rate of the refined coal can reach 85-90% in the experiment under the condition that the concentration of ore pulp is 60-140 g per liter.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (3)

1. The coal dressing collecting agent is characterized by comprising the following raw materials in parts by weight:
5-15% of squalene glyceride, 10-25% of sterol glyceride, 10-30% of isolongifolan ethyl ether and 30-65% of hydrocarbon oil mixture of C7-C16; wherein the squalene fatty ester is vegetable oil heated to 220-270 deg.C, and has extraction density of 0.95-0.98 g/cm3A fraction of (a); the steryl olefine acid glyceride is vegetable oil which is heated to 160-190 ℃ and the density of extraction is 0.92-0.95 g/cm3A fraction of (a); the isolongifolyl ethyl ether is extracted by heating vegetable oil to 120-150 ℃ and the density of the extracted vegetable oil is 0.89-0.93 g/cm3A fraction of (a); the mixture of the C7-C16 hydrocarbon oil is extracted from petroleum and has the density of 0.85-0.87 g/cm3And the distillation range is 100-300 ℃.
2. A coal dressing collector according to claim 1, wherein the vegetable oil is rice bran oil, peanut oil or castor oil.
3. A method of preparing the coal dressing collector according to claim 1 or 2, characterized by comprising the following steps:
step 1, weighing the following raw materials in parts by weight: 5-15% of squalene glyceride, 10-25% of sterol glyceride, 10-30% of isolongifolan ethyl ether and 30-65% of hydrocarbon oil of C7-C16;
step 2, putting the raw materials weighed in the step 1 into a reaction kettle for stirring, wherein the temperature in the reaction kettle is 10-40 ℃, and the rotating speed during stirring is 20-60 r/min;
and 3, storing the stirred product into a finished product tank.
CN201711378210.4A 2017-12-19 2017-12-19 Coal dressing collector and preparation method thereof Expired - Fee Related CN108927290B (en)

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2177838C2 (en) * 1999-08-09 2002-01-10 Институт химии нефти СО РАН Coal flotation collector
CN101385996B (en) * 2008-09-10 2012-12-19 中国矿业大学(北京) Preparation method of flotation promoter
CN103203289B (en) * 2013-05-09 2015-05-20 中煤科工集团淮北爆破技术研究院有限公司 Flotation promoter of coal slime and method for preparing flotation reagent
CN105750092A (en) * 2016-03-10 2016-07-13 徐州工程学院 Novel coal preparation collecting agent and preparation method thereof
CN105925381A (en) * 2016-04-14 2016-09-07 淮阴师范学院 High value utilization method of gutter oil

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