CN110237939A - A kind of low order/oxidized coal slime floating agent and its preparation method and application - Google Patents
A kind of low order/oxidized coal slime floating agent and its preparation method and application Download PDFInfo
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- CN110237939A CN110237939A CN201910640163.9A CN201910640163A CN110237939A CN 110237939 A CN110237939 A CN 110237939A CN 201910640163 A CN201910640163 A CN 201910640163A CN 110237939 A CN110237939 A CN 110237939A
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- coal
- low order
- oxidized
- flotation
- floating agent
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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
- B03D1/014—Organic compounds containing phosphorus
-
- 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 kind of low order/oxidized coal floating agent, the mass percent of medicament and water is 1%~5%；The medicament includes enuatrol 20-99 mass parts and regulator 1-80 mass parts.Also disclose preparation method and the application as collecting agent in low order/oxidized coal floating agent in low order/oxidation coal flotation.The beneficial effects of the present invention are: enuatrol is easy to adsorb with low order/oxidized coal surface oxygen-containing functional group, is modified low order/oxidized coal surface, and original hydrophilic surface becomes hydrophobic.Enuatrol is a kind of emulsifier, can promote to form more minute bubbles in ore pulp, forms bubble-coal floc sedimentation required for flotation with coal, clean coal yield can be improved.Calgon can reduce the zeta potential difference between coal-spoil particle as regulator, increase the electrostatic repulsion between coal-spoil particle, reduces spoil particle in the cover of coal particle surface, cleans ash is reduced in flotation.
Description
Technical field
The present invention relates to floating agent technical field more particularly to a kind of floating agents and its system of low order/oxidized coal slime
Preparation Method, and the application in low order coal slime or oxidized coal slime flotation.
Background technique
Coal is as the most important fossil energy in China, within the following considerable time, consumes and ties in non-renewable energy
Leading position in structure will not change.Coal is the mixture of organic and inorganic materials, therefore needs to sort before use.With
The high speed development of national economy, demand for energy are continuously increased, and the coal of middle and high degree of metamorphism is largely exploited, and reserves increasingly subtract
Few, however, reserves are big, the low-order coal and oxidized coal easily obtained is effectively sorted due to being difficult to, and is not utilized well.
Coal high-efficiency sorting technology is the important prerequisite realizing coal resources clean and effective and utilizing.Wherein, flotation is current
, most efficient method most mature less than 0.5mm coal is sorted, and is widely used in industrial production.In flotation, using flotation device and
Flotation post separation low order/oxidized coal (< 0.5mm).In general, coal has natural hydrophobicity, but this hydrophobicity is insufficient
With effectively flotation, it usually needs hydrocarbon-type oil such as diesel oil and kerosene further increase the floatability of coal particle as collecting agent.
In coal preparation plant, the hydrocarbon-type oil dosage of middle and high rank coal is lower, and low order/oxidized coal and some medium coking coal for being difficult to flotation
Hydrocarbon-type oil dosage it is higher.Therefore, if hydrocarbon-type oil cost needed for coal flotation is higher than the cleaned coal profit that flotation generates, then it is assumed that
It is uneconomic.Under normal circumstances, hydrocarbon-type oil dosage is lower than 1 kg/ton of coal, this is economical to coal preparation plant.If required
Hydrocarbon ils dosage is very high, is unreasonable for difficult float coal.
However, more oxygen-containing functional group is often contained on surface, parent for float coal difficult for low-order coal and oxidized coal etc.
Aqueous strong, porosity is high, and floatability is poor, is difficult to carry out effectively flotation using conventional oiliness medicament (diesel oil, kerosene etc.), and
Poor selectivity.To solve the technical problem, current research, which focuses primarily upon, develops efficient floating agent or pharmaceutical agent combinations
Method, surface modification etc. is with the hydrophobicity and selectivity on raising difficult float coal surface.Be specifically included in floatation process add it is various
Surfactant, ore grinding pretreatment, heating Pretreatment with Pressurized, microwave or ultrasonic pretreatment, high shear such as are sized mixing at the technologies hand
Section.Although above-mentioned means can improve the flotation effect of difficult float coal, the modified higher cost in surface, it is difficult to industrialize.Secondly,
Current research focuses mainly on reducing the oxygen-containing functional group quantity on coal surface, improves its hydrophobicity, so as to improve its flotation effect
Fruit.But few people utilize the property of coal surface oxygen functional group, develop efficient collecting for these oxygen-containing functional groups
Agent.Conventional collecting agent of the enuatrol as oxide ore, is usually used as the oxide ores mine such as flotation rutile, serpentine and tourmaline
Object.Enuatrol is when flotation solution environmental is acid and neutral, to the collecting effect of gangue mineral common in the coal slimes such as quartz
Difference.In addition, coal preparation plant conventional flotation environment pH is 6-8, therefore, in coal slime flotation, enuatrol will not be by the gangues mine such as quartz
Object flotates referred to as froth pulp.It is interesting that enuatrol is easy to inhale with low order/oxidized coal surface oxygen-containing functional group
It is attached, it is modified low order/oxidized coal surface, original hydrophilic surface becomes hydrophobic.In addition, enuatrol or a kind of emulsification
Agent can promote to form more minute bubbles in ore pulp, these bubbles are easy and coal sticks, and coal and bubble be more readily formed floating
Bubble-coal floc sedimentation required for selecting.To greatly improve low order/oxidized coal floatation clean coal yield.Calgon is as tune
It whole dose, can reduce the zeta potential difference between coal-spoil particle, increase the electrostatic repulsion between coal-spoil particle, reduce cash
Stone particle therefore can be effectively reduced cleans ash in the cover of coal particle surface in flotation.It is therefore proposed that a kind of low
The preparation of rank/oxidized coal slime flotation recovery effect medicament and application method, it will to improve low order/oxidized coal slime flotation recovery
Effect provides new thinking.
Summary of the invention
Goal of the invention of the invention is, overcomes defect of the existing technology, provides a kind of low order/oxidation coal flotation medicine
Agent and preparation method thereof proposes production upgrading to cleaned coal, overcomes non-polar hydrocarbon oil in the traditional technology of coal slime flotation recycling cleaned coal
Deficiency, and then to solve the problems, such as that existing rare coal resource can not effective recycling and reusing.
The purpose of the present invention is mainly achieved through the following technical solutions:
A kind of low order/oxidized coal floating agent, each component are as follows: the mass percent of medicament and water is 1%~5%；The medicament packet
Include enuatrol 20-99 mass parts and regulator 1-80 mass parts.
The regulator are as follows: calgon.
Low order of the present invention/oxidized coal floating agent preparation method, the steps include:
Enuatrol is formulated as aqueous solution sodium oleate according to the ratio by step 1.；
Regulator is added in step 2. according to the ratio in aqueous solution sodium oleate, and low order/oxidized coal floating agent solution is made.
Application method of the low order of the present invention/oxidized coal floating agent in low order/oxidation coal flotation, the steps include:
In low order coal slime or oxidized coal slime flotation, low order of the present invention/oxidized coal floating agent solution is added in ore pulp, after
The continuous foaming agent that is added is used to form stable froth bed, carries the coal slime particle being modified to froth bed using bubble, scrapes work
For floatation clean coal.
The invention has the benefit that enuatrol is easy to adsorb with low order/oxidized coal surface oxygen-containing functional group, make
Low order/oxidized coal surface is modified, and original hydrophilic surface becomes hydrophobic.It, can be in addition, enuatrol or a kind of emulsifier
Promote to form more minute bubbles in ore pulp, these bubbles are easy and coal sticks, and form bubble-coal floc sedimentation required for flotation.
To greatly improve low order/oxidized coal floatation clean coal yield.Calgon can reduce coal-spoil as regulator
Zeta potential difference between grain increases the electrostatic repulsion between coal-spoil particle, reduces spoil particle in the cover of coal particle surface
Lid, therefore cleans ash can be effectively reduced in flotation.
Specific embodiment
Invention is further described in detail combined with specific embodiments below.
Embodiment 1
A kind of low order/oxidized coal floating agent, the primary raw material of medicament are enuatrol and regulator, in which: 50 mass of enuatrol
The mass percent of part and 50 mass parts of regulator, medicament and water is 1%.The regulator is calgon.
Enuatrol is formulated as aqueous solution sodium oleate according to the ratio；Regulator is added according to the ratio in aqueous solution sodium oleate, makes
Obtain low order/oxidized coal floating agent solution.
Steps are as follows for specific floatation process:
Coal slime (raw material) is added in flotation cell step 1., and deionized water is added to size mixing, and stirs 1-3min, ore pulp is made；Coal slime be-
0.5mm dross coal coal slime, the solid masses percent concentration of ore pulp are 10%.
Step 2. is added collecting agent (low order of the present invention/oxidized coal floating agent) in the ore pulp of step 1, stirs 1-
3min；Low order/oxidized coal floating agent dosage is: delivering dry coal slurry per ton, enuatrol and regulator dosage amount to 1000g.
Foaming agent is added in step 3. in the ore pulp of step 2, stirs 0.5-1min.Foaming agent is methyl isobutyl carbinol,
Dosage is 70g/t.
Step 4. is filled with bubble in the ore pulp of step 3 and carries out flotation.Flotation time is 3-5min, and it is floating to collect foam respectively
The particle stopped in particle and ore pulp out, as final cleaned coal, tail coal product.
Embodiment 2 is substantially the same manner as Example 1, except that: the coal slime in the step 1 is -0.5mm jet coal coal
Mud, the water are tap water.
The primary raw material of medicament is enuatrol and regulator, in which: 80 mass parts of 20 mass parts of enuatrol and regulator, medicine
The mass percent of agent and water is 5%.
Low order/oxidized coal floating agent dosage is: delivering dry coal slurry per ton, enuatrol and regulator dosage amount to 4000g.
Embodiment 3 is substantially the same manner as Example 1, except that: the coal slime in the step 1 is -0.5mm lignite coal
Mud, the water are tap water.
The primary raw material of medicament is enuatrol and regulator, in which: 20 mass parts of 80 mass parts of enuatrol and regulator, medicine
The mass percent of agent and water is 2%.
Low order/oxidized coal floating agent dosage is: delivering dry coal slurry per ton, enuatrol and regulator dosage amount to 3000g.
Embodiment 4 is substantially the same manner as Example 1, except that: the coal slime in the step 1 is -0.5mm oxidized coal coal
Mud.
The present invention in different agents dosage, distinguish compared with non-polar hydrocarbon oils collecting agent clean coal yield by related collecting agent
Increase by 9.87%, 39.14%, 55.64%, cleans ash reduces by 2.31%, 5.87%, 9.54% respectively.
Claims (4)
1. a kind of low order/oxidized coal floating agent, each component are as follows: the mass percent of medicament and water is 1%~5%；The medicament
Including enuatrol 20-99 mass parts and regulator 1-80 mass parts.
2. low order according to claim 1/oxidized coal floating agent, it is characterized in that: the regulator is calgon.
3. a kind of low order described in claim 1 and 2/oxidized coal floating agent preparation method, the steps include:
Enuatrol is formulated as aqueous solution sodium oleate according to the ratio by step 1.；
Regulator is added in step 2. according to the ratio in aqueous solution sodium oleate, and low order/oxidized coal floating agent solution is made.
4. a kind of application method of low order of any of claims 1 or 2/oxidized coal floating agent in low order/oxidation coal flotation,
It the steps include:
In low order coal slime or oxidized coal slime flotation, low order of the present invention/oxidized coal floating agent solution is added in ore pulp, after
The continuous foaming agent that is added is used to form stable froth bed, carries the coal slime particle being modified to froth bed using bubble, scrapes work
For floatation clean coal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910640163.9A CN110237939A (en) | 2019-07-16 | 2019-07-16 | A kind of low order/oxidized coal slime floating agent and its preparation method and application |
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| CN201910640163.9A CN110237939A (en) | 2019-07-16 | 2019-07-16 | A kind of low order/oxidized coal slime floating agent and its preparation method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589590A (en) * | 2020-05-27 | 2020-08-28 | 上海是大高分子材料有限公司 | Flotation method for oxidized coal slime |
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| GB2223191B (en) * | 1988-09-29 | 1992-06-03 | Hoelter Heinz | Process of and plant for treatment of tank slimes or slurries |
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2019
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| CN85106071A (en) * | 1985-08-14 | 1986-01-10 | 轻工业部日用化学工业科学研究所 | Oil-in-water emulsion used in flotation of coal slurry |
| GB2223191B (en) * | 1988-09-29 | 1992-06-03 | Hoelter Heinz | Process of and plant for treatment of tank slimes or slurries |
| RU2177838C2 (en) * | 1999-08-09 | 2002-01-10 | Институт химии нефти СО РАН | Coal flotation collector |
| CN102553725A (en) * | 2012-02-08 | 2012-07-11 | 中南大学 | Composite floatation collector and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589590A (en) * | 2020-05-27 | 2020-08-28 | 上海是大高分子材料有限公司 | Flotation method for oxidized coal slime |
| CN111589590B (en) * | 2020-05-27 | 2021-11-19 | 上海是大高分子材料有限公司 | Flotation method for oxidized coal slime |
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