CN106000657B - A kind of coal slime flotation collector and preparation method thereof - Google Patents
A kind of coal slime flotation collector and preparation method thereof Download PDFInfo
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- CN106000657B CN106000657B CN201610451940.1A CN201610451940A CN106000657B CN 106000657 B CN106000657 B CN 106000657B CN 201610451940 A CN201610451940 A CN 201610451940A CN 106000657 B CN106000657 B CN 106000657B
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- coal slime
- flotation
- sec
- octyl alcohol
- hydrocarbon
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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
- B03D1/006—Hydrocarbons
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a kind of coal slime flotation collectors and preparation method thereof, belong to coal flotation technology field.The coal slime flotation collector, by hydrocarbon-type oil, sec-octyl alcohol and the transparency liquid that forms of surfactant to flotation with facilitation, preparation method is：The mixed surfactant of Span80 and Tween80 are prepared first；Then the mixture for preparing hydrocarbon-type oil and water, mixed surfactant is added in the mixture；Mixture is stirred, while sec-octyl alcohol is added dropwise；When solution becomes clarification by muddiness, stops that sec-octyl alcohol is added dropwise, coal slime flotation collector is made.The collecting agent can reach the purpose saved oil consumption and improve clean coal recovery for coal slime flotation；Have many advantages, such as that easy to use, reagent consumption is low, flotation effect is good；In flotation, microemulsion can be sufficiently dispersed in ore pulp, enhance the floatability of concentrate, and can mitigate adherency of the thin mud on concentrate surface, improve concentrate quality.
Description
Technical field
The present invention relates to a kind of coal slime flotation collectors and preparation method thereof, belong to coal flotation technology field.
Background technology
Kerosene and diesel oil are most common collecting agents in coal slime flotation, and indissoluble or not soluble in water is usually stirred in flotation device
Exist in the form of oil droplet under the action of device, but droplet size is big, the bad dispersibility in ore pulp, therefore kerosene/bavin in putting into practice
The consumption of oil is often excessively high, does not only result in a ton coal flotation cost increase, and exacerbates dirt of the high grey thin mud to floatation clean coal
Dye.For the function and effect for reducing medicine consumption, improving collecting agent to coal slime flotation, researcher introduces reagent emulsifying（I.e. in kerosene
Or emulsifier is added in diesel oil, so that it is adsorbed in oil-water interface and form protective film, prevents oil droplet from annexing）With ultrasonic emulsification technology,
So that oil droplet size is substantially reduced, not only improve clean coal recovery, but also reduces the consumption of kerosene/diesel oil, the work of this respect
Has relevant patent（CN1341667）Report is disclosed with document.But emulsion is a kind of thermodynamic unstable system, is held
It is vulnerable to the influence of the external conditions such as temperature, the holding time is short, and commercial Application is restricted.
The Thermodynamically stable dispersion that microemulsion is made of water, oil, surface-active and cosurfactant etc..China
Patent（CN103056033A）A kind of Coal slime microemulsion collecting agent preparation method is disclosed, wherein oil phase is light diesel fuel, and surface is lived
Property agent be induced by alkyl hydroxybenzene polyoxyethylene ether, cosurfactant is mainly the shorter n-amyl alcohol or n-hexyl alcohol of carbochain.The reports such as Li Lin
A kind of preparation method of diesel oil micro emulsion collecting agent in road, makes anion-nonionic surfactant by oneself, and best cosurfactant is same
For n-amyl alcohol and n-hexyl alcohol.Author points out, the sec-octyl alcohol foaming agent that coal slime flotation process uses, since carbochain is long and unsuitable
As the cosurfactant for preparing micro emulsion.So when being used as coal slime flotation collector using microemulsion prepared by the above method,
It is matched to still need to addition foaming agent.
Invention content
The present invention is intended to provide a kind of coal slime flotation collector and preparation method thereof, using hydrocarbon-type oil as oil phase, sec-octyl alcohol is
Cosurfactant prepares micro-emulsion type collecting agent for coal slime flotation process, the medicament with the effects that other surfaces activating agent, water
It is provided simultaneously with frothing capacity.
The present invention provides a kind of coal slime flotation collector, the collecting agent is microemulsion, by following mass percent
Raw material is made：
Hydrocarbon-type oil： 36-40%
Water 9-14%
Sec-octyl alcohol 13-25%
Surfactant 30-34%；
The hydrocarbon-type oil refers to one kind in kerosene or diesel oil.
In above-mentioned coal slime flotation collector, the HLB value that the surfactant is Span80 and Tween80 is configured to is
7 ~ 9 mixed surfactant.
The present invention provides the preparation methods of above-mentioned coal slime flotation collector, include the following steps：
（1）The mixed surfactant for preparing Span80 and Tween80, is denoted as A；
（2）The mixture for preparing hydrocarbon-type oil and water, is denoted as B；The mass percent of wherein hydrocarbon-type oil is 75% ~ 80%, remaining
For water；
（3）By step（1）Step is added in the A of gained（2）In the B of gained, wherein the mass percent of A is 30 ~ 40%；
（4）Mixture is stirred, while dropwise（Manually or using buret）Sec-octyl alcohol is added, rate of addition is every
Second 3 ~ 4 drips；
（5）It visually observes, when solution becomes clarification by muddiness, stops that sec-octyl alcohol is added dropwise, coal slime flotation collector is made.
In above-mentioned preparation method, the step（1）In, the HLB value of the mixed surfactant of gained is 7 ~ 9.
In above-mentioned preparation method, the coal slime flotation collector of gained is microemulsion, and the grain size of microemulsion is 50 ~ 100nm.By
In the effect of cosurfactant-sec-octyl alcohol so that hydro carbons oil Microemulsions For Use is as clear as crystal, and system is uniform, ensure that microemulsion particle
Diameter is between 50 ~ 100nm.
The present invention prepares the coal slime flotation collector of gained, has collecting and blistering dual function, is by collecting agent（Hydro carbons
Oil）, foaming agent（Sec-octyl alcohol）With the transparency liquid that there is the surfactant of facilitation to form to flotation.
The present invention provides a kind of skills preparing microemulsion hydrocarbon-type oil using hydrocarbon-type oil, sec-octyl alcohol, surfactant and water
Art, that brings has the beneficial effect that：
（1）The purpose saved oil consumption and improve clean coal recovery is can reach for coal slime flotation；
（2）Sec-octyl alcohol is most common foaming agent in coal slime flotation, and the micro emulsion collecting agent that according to the present invention prepared by technology exists
It is provided simultaneously with the performance of foaming agent during coal slime flotation, has many advantages, such as that easy to use, reagent consumption is low, flotation effect is good；
（3）In flotation, microemulsion can be sufficiently dispersed in ore pulp, be conducive to it and collided rapidly with mineral, be allowed to select
Selecting property is adsorbed on mineral surfaces, enhances the floatability of concentrate, and can mitigate adherency of the thin mud on concentrate surface, improves concentrate
Quality.
Specific implementation mode
It is further illustrated the present invention below by embodiment, but is not limited to following embodiment.
Embodiment 1：
（1）Kerosene 16.13g, water 4.11g are positioned in beaker, stirring is spare；
（2）The mixed surfactant that Span80 and Tween80 is prepared is added into said mixture, wherein Span80 is
10.04g, Tween80 3.34g, HLB=7 of mixed surfactant；
（3）Mixture is stirred, while sec-octyl alcohol is added dropwise, rate of addition is 3 ~ 4 drop per second.Milky is gradually presented in solution,
With the increase of sec-octyl alcohol additive amount, solution becomes clarification suddenly, and it is 11.03g to correspond to sec-octyl alcohol weight at this time, and gained is transparent and homogeneous
Solution.
（4）Flotation is carried out to the coal slime sample of Shanxi coal preparation plant using microemulsion obtained by the present embodiment.Acquired results are shown in
Table 1.
Comparative example：Using kerosene as collecting agent, sec-octyl alcohol is as foaming agent（Other conditions and above-mentioned floatation process phase
Together）, flotation results are shown in Table 1.
1 flotation experimental results of table
Microemulsion amount ratio kerosene reduces one times, but floatation clean coal combustible recovery is higher than kerosene by 9.78%.As it can be seen that
Using microemulsion medicament, kerosene dosage can be not only reduced, but also flotation effect can be improved.
Embodiment 2：
（1）Kerosene 16.00g, deionized water 4.34g are positioned in beaker, stirring is spare：
（2）The mixed surfactant of Span80 and Tween80 is added into said mixture, wherein Span80 is
8.67g, Tween80 4.67g, HLB=8 of mixed surfactant；
（3）Mixture is stirred, while sec-octyl alcohol is added dropwise, rate of addition is 3 ~ 4 drop per second.Milky is gradually presented in solution,
With the increase of sec-octyl alcohol dripping quantity, solution becomes clarification suddenly, and corresponding sec-octyl alcohol weight is 7.98g at this time, and gained is uniform, saturating
Bright solution.
（4）Flotation is carried out to the coal slime sample of Shanxi coal preparation plant using microemulsion obtained by the present embodiment.Acquired results are shown in
Table 2.
Comparative example：Using kerosene as collecting agent, sec-octyl alcohol is as foaming agent（Other conditions and above-mentioned floatation process phase
Together）, flotation results are shown in Table 2.
2 flotation experimental results of table
As can be seen that when floatation indicators are close, the unit dose of microemulsion collecting agent reduces by 112 g/t than kerosene collector.
Embodiment 3：
（1）Kerosene 16.00g, deionized water 4.35g are positioned in beaker, stirring is spare；
（2）The mixed surfactant of Span80 and Tween80 is added into said mixture, wherein Span80 is
7.48g, Tween80 5.87g, HLB=9 of mixed surfactant；
（3）Mixture is stirred, while sec-octyl alcohol is added dropwise, rate of addition is 3 ~ 4 drop per second.Milky is gradually presented in solution,
With the increase of sec-octyl alcohol additive amount, solution becomes clarification suddenly, at this time corresponding sec-octyl alcohol weight be 6.63g, gained be it is uniform,
Transparent solution.
（4）Flotation is carried out to the coal slime sample of Shanxi coal preparation plant using microemulsion obtained by the present embodiment.Acquired results are shown in
Table 2.
Comparative example：Using kerosene as collecting agent, sec-octyl alcohol is as foaming agent（Other conditions and above-mentioned floatation process phase
Together）, flotation results are shown in Table 3.
3 flotation experimental results of table
As can be seen that when half of the unit dose of microemulsion close to kerosene dosage, body recycling that floatation clean coal is flammable
Rate is higher than kerosene collector by 2.47%.
To sum up, the micro emulsion coal slime collecting agent prepared using this method, can not only be greatly reduced kerosene dosage, but also can be with
Improve coal slime flotation effect, improves clean coal recovery.
Claims (3)
1. a kind of coal slime flotation collector, it is characterised in that：The collecting agent is microemulsion transparency liquid, by following quality percentage
The raw material of ratio is made：
Hydrocarbon-type oil 36-40%
Water 9-14%
Sec-octyl alcohol 13-25%
Surfactant 30-34%；
The hydrocarbon-type oil refers to one kind in kerosene or diesel oil；The surfactant is that Span80 and Tween80 is configured to
HLB be 7 ~ 9 mixed surfactant；Using hydrocarbon-type oil as oil phase, sec-octyl alcohol is cosurfactant, with other surfaces activity
Agent, water effect prepare micro-emulsion type collecting agent.
2. a kind of preparation method of coal slime flotation collector described in claim 1, it is characterised in that：Include the following steps：
（1）The mixed surfactant for preparing Span80 and Tween80, is denoted as A；
（2）The mixture for preparing hydrocarbon-type oil and water, is denoted as B；The mass percent of wherein hydrocarbon-type oil is 75% ~ 80%, remaining is water；
（3）By step（1）The A of gained is added in B, and wherein the mass percent of A is 30 ~ 40%；
（4）Mixture is stirred, while sec-octyl alcohol is added dropwise, rate of addition is 3 ~ 4 drop per second；
（5）It visually observes, when solution becomes clarification by muddiness, stops that sec-octyl alcohol is added dropwise, coal slime flotation collector is made.
3. the preparation method of coal slime flotation collector according to claim 2, it is characterised in that：The coal slime flotation of gained is caught
Receipts agent is microemulsion, and the grain size of microemulsion is 50 ~ 100nm.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106799310B (en) * | 2017-02-06 | 2019-09-20 | 中国矿业大学 | A kind of low-order coal coal slime flotation collector and its application |
| CN106944262B (en) * | 2017-04-10 | 2019-10-11 | 太原理工大学 | A kind of compound cation-collecting agent and preparation method thereof |
| CN108160337A (en) * | 2017-12-27 | 2018-06-15 | 安徽理工大学 | A kind of method that coal slime flotation collector is prepared using agricultural crop straw |
| CN109569890B (en) * | 2018-11-26 | 2023-08-11 | 千石佳业环保(苏州)有限公司 | Mixed ether-based flotation agent |
| CN110293005B (en) * | 2019-07-15 | 2022-02-22 | 中国矿业大学 | Liquid-solid composite collecting agent for coal slime flotation and preparation method thereof |
| CN111151382A (en) * | 2020-01-20 | 2020-05-15 | 太原理工大学 | Method for reducing coal flotation collector kerosene consumption |
| 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 |
| CN114471956B (en) * | 2021-12-27 | 2023-03-17 | 中国矿业大学 | Coal flotation capsule slow-release collecting agent and preparation method and application thereof |
| CN115007321A (en) * | 2022-03-31 | 2022-09-06 | 神华准能资源综合开发有限公司 | Method for recovering carbon from gangue acid leaching residue |
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Patent Citations (5)
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| US4904277A (en) * | 1986-03-17 | 1990-02-27 | Texaco Inc. | Rehydrating inhibitors for preparation of high-solids concentration low rank coal slurries |
| CN102319635A (en) * | 2011-09-27 | 2012-01-18 | 高露 | GH coal collector and preparation method thereof |
| CN105492572A (en) * | 2013-03-14 | 2016-04-13 | Cesi化工有限公司 | Methods and compositions for use in oil and/or gas wells |
| CN105612003A (en) * | 2013-10-01 | 2016-05-25 | 艺康美国股份有限公司 | Collectors for mineral flotation |
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