CN109046791A - A kind of ion liquid type micro emulsion collecting agent and its preparation method and application - Google Patents
A kind of ion liquid type micro emulsion collecting agent and its preparation method and application Download PDFInfo
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- CN109046791A CN109046791A CN201810897817.1A CN201810897817A CN109046791A CN 109046791 A CN109046791 A CN 109046791A CN 201810897817 A CN201810897817 A CN 201810897817A CN 109046791 A CN109046791 A CN 109046791A
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- collecting agent
- micro emulsion
- ion liquid
- type micro
- liquid type
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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
-
- 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
-
- 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 ion liquid type micro emulsion collecting agents and its preparation method and application, it is by light diesel fuel 10wt%~30wt%, primary surfactant [CnMim] Cl class ionic liquid 5wt%~20wt%, cosurfactant C5~C8 alcohol 3wt%~10wt%, surplus is what water mixed.Ion liquid type micro emulsion collecting agent of the present invention has stronger attraction and preferably dispersibility, needs less dosage compared to traditional collecting agent for flotation, rate of economizing gasoline reaches 35%~50wt%, can achieve excellent flotation effect.
Description
Technical field
The invention belongs to coal slime flotation technical field more particularly to a kind of ion liquid type micro emulsion collecting agents.
Background technique
Flotation as the most widely used technology of slime separation, according to mineral surfaces physical chemistry characteristic difference and realize
Sorting.Coal slime surface changes the hydrophilic and hydrophobic of coal surface because containing a large amount of oxygen functional groups (- OH ,-C=O ,-COOH etc.)
Balance is easy to that hydrogen bonding occurs with hydrone, forms more stable hydration shell so that surface hydrophilicity is strong, floatability is poor,
Flotation is hindered, separating effect is greatly reduced；And at present in coal slime flotation largely using nonpolar hydrocarbon ils make collecting agent (kerosene,
Diesel oil etc.) because of its stronger hydrophobicity, good flotation effect is realized with coal surface action.Nonpolar hydrocarbon ils itself due to
The defect of bad dispersibility, additive amount in use is excessive, by mechanical forced peptizaiton in water also usually with biggish
" oil droplet " form exists, and leads to the wasting of resources and environmental pollution in the application.
In view of the above problems, related scholar proposes emulsifying technology and micro-emulsion technology, to solve nonpolar hydrocarbon ils in ore pulp
In bad dispersibility the problem of.Wherein:
Emulsifying technology mainly passes through addition emulsifier, so that nonpolar hydrocarbon ils and water is formed W/O lotion through certain equipment
Process, a kind of coal slime flotation collector of China Patent Publication No. CN101722111A and preparation method thereof, with percent mass
Kerosene/light diesel fuel of 20%-50%, the emulsifier of 1%-5%, 0.015% assistant for emulsifying agent of 0.006%-, surplus is water, preparation
Collecting agent is emulsified out；Emulsifier described in patent is polyoxyethylene sorbitan fatty acid ester and fatty acid esters of sorbitan
Mixture, HLB value is in 14.3 range of 12.8-；Assistant for emulsifying agent is neopelex or fatty alcohol polyoxyethylene ether
Sodium sulphate and neopelex are with the mixture of mass ratio 0.5-2.The coal slime flotation collector can get preferable floating
Select effect, but there are still many deficiencies: the collecting agent of this method preparation still falls within the scope of emulsion, and stability is poor, exists
" demulsification " phenomenon in short time, " demulsification " fail afterwards, are not easy to store, unfavorable the problems such as being used with industry spot；Emulsion is caught
The oil droplet size of agent is received in micron scope, the big problem of collecting agent consumption does not solve at all yet in the application of actual use process
Certainly.
Micro-emulsion technology is a kind of completely new technology for being different from emulsifying technology, by surfactant and helps surface living
Property agent so that You Heshui is spontaneously formed the process of transparent or semitransparent microemulsion, microemulsion and emulsion have basic difference, main
It shows as, simple emulsion is thermodynamic unstable system, and dispersed phase particle is big, and unevenly, appearance is opaque, is stored
To occur to coalesce and be ultimately separated into oil, water two-phase in journey, need surfactant or other emulsifiers maintain dynamic stability and
Microemulsion is thermodynamic stable system, dispersed phase particle very little, appearance transparent or micro- indigo plant, is centrifuged at a high speed and is not layered
Phenomenon, the layering in the case where ultracentrifugation acts on off field are also a kind of temporary phenomenon, and centrifugal field is cancelled, and lamination disappears automatically.
A kind of low-order coal coal slime flotation collector of China Patent Publication No. CN201710067078.9, including hydrocarbon-type oil and promotor, with
Mass percent compounds, each ingredient accounting are as follows: C10~C16Hydrocarbon-type oil 60-75%；Accelerant C6~C8Sour 8- 15%, C10
~C18Ester 4-8%, C5~C7Ketone 6-12% and C5~C9Aldehyde 7-13%.This method preparation collecting agent reduce dosing,
Flotation cost has good economic benefit, but the collecting agent ingredient of its preparation is various, mostly organic ingredient pollution ecology difficult to degrade
Environment and preparation method is cumbersome.
Ionic liquid refers to the liquid being composed entirely of ions, be in a liquid state at a temperature of room temperature or near room temperature by from
The substance that son is constituted, referred to as ionic liquid at room temperature, ionic liquid is tasteless, non-ignitable, and vapour pressure is extremely low, therefore can be used in Gao Zhen
In hollow body system, while the problem of environmental pollution generated by volatilization can be reduced；Can operating temperature range it is wide (- 40~300 DEG C),
It with good thermal stability and chemical stability, easily separates, can recycle with other materials.The structure of ionic liquid
It determines that it can also be used as the ideal substitute of surfactant, especially glyoxaline ion liquid with advantage, there is one
Hydrophobic alkyl chain and hydrophilic imidazole group, become a kind of excellent surfactant, and such surfactant is easier
It is fixed on liquid-liquid interface, there is stronger solvability, imidazole group also because π-the π of aromatic rings is acted on, has more water
Strong attraction；It can be difficult to disperse this difficult point in water to avoid oil by being prepared into microemulsion, meanwhile, ionic liquid pair
Low-order coal surface oxygen functional group has certain dissolved destruction effect, can be effectively improved the floatability of low-order coal.
Summary of the invention
To solve the technological deficiency and some micro emulsion collecting agents that emulsus class collecting agent stability is poor, collecting agent consumption is big
Prepare cumbersome and environmental pollution is serious problem, the present invention provides that a kind of stability is good, collector dosage is few, low-rank coal flotation
The obvious and environmentally friendly ion liquid type micro emulsion collecting agent of high-efficient and economic benefit.
Present invention simultaneously provides the preparation method of ion liquid type micro emulsion collecting agent and the applications in terms of coal slurry flotation.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of ion liquid type micro emulsion collecting agent, which is characterized in that it is by hydrocarbon-type oil 10%~30%, and main surface is living
Property agent 5%~20%, cosurfactant 3%~10%, surplus is that water mixes, and the percentage is quality hundred
Divide ratio；Wherein:
The hydrocarbon-type oil is light diesel fuel, can be selected from following at least one: No. 10 light diesel fuels, No. 0 light diesel fuel ,-No. 10 light
Diesel oil ,-No. 20 light diesel fuels and-No. 35 light diesel fuels；
The primary surfactant is [CnMim] Cl class ionic liquid, at least it is selected from following one kind: [C8mim]Cl、
[C10mim]Cl、[C12mim]Cl、[C14Mim] Cl and [C16mim]Cl。
The cosurfactant is at least selected from following one kind: C5~C8 alcohol.
Preparation method of the present invention is: by above-mentioned hydrocarbon-type oil, primary surfactant and cosurfactant, ratio is mixed as required
It closes, magnetic stirrer is then used within the scope of 25 DEG C -50 DEG C, while stirring plus water, stir 3-5min, micro emulsion collecting
The transparent clarification of agent.
Method using ion liquid type micro emulsion collecting agent coal slurry flotation of the present invention is as follows:
Step 1: preparing ion liquid type micro emulsion collecting agent according to the method described above.
Step 2: two agitators of setting, are referred to as one section of agitator and two sections of agitators, one section of agitator arrangement
In a high position, two sections of agitators are arranged in low level, and ore pulp can enter two sections of agitators from one section of agitator gravity flow.
Step 3: being introduced into one section of agitator from the black water that separation system comes, the is then added into one section of agitator
The ion liquid type micro emulsion collecting agent of one step preparation, it is desirable that additional amount is 0.2~0.6kg/t delivering dry coal slurry, guarantees 15min or more
Quickly stir and evenly mix the time；
Blender revolving speed preferably 4000~5000r/min；
Step 4: the black water that third step mixes collecting agent is flowed automatically to two sections of agitators, while adding in two sections of agitators
Enter foaming agent, guarantees that 1min's or more mixes slowly mixing time, it is desirable that the additional amount of foaming agent is dry for 0.02~0.06kg/t
Coal slime.
Blender revolving speed preferably 2000~2800r/min；
Step 5: the mixture that the 4th step is formed, which is fed flotation device, carries out flotation.
Compared with existing collecting agent, ion liquid type micro emulsion collecting agent prepared by the present invention has the advantage that and property
Can:
1, the invention proposes a kind of and entirely different technical solutions of traditional micro emulsion collecting agent technical concept, choose miaow
Azole ionic liquid is as primary surfactant, then is aided with cosurfactant, the attraction between imidazole ring and cosurfactant
Power is stronger, thus prevents cosurfactant from entering in the aqueous solution of conjugation, it is easier to be fixed on liquid-liquid interface, have
Stronger microemulsified ability, the dispersion effect of classical microemulsion is reached using lesser amount of ionic liquid, avoids surface-active
Agent generally forms hemi-micelle absorption on coal surface, leads to the reduced defect of coal slime flotation selectivity, and it is better to form selectivity
Micro emulsion collecting agent.In addition, introducing bubble is required to during coal slime flotation, and the cosurfactant C5 that the present invention selects
~C8 alcohol, it is both assistant for emulsifying agent in system that carbochain is longer, while being also the foaming agent in floatation process, it is possible to reduce specially
With the dosage of foaming agent, floating agent cost is reduced.
2, since coal slime surface is because containing a large amount of oxygen functional groups (- OH ,-C=O ,-COOH etc.), so coal slime surface hydrophilic
Property it is strong, floatability is poor, is easy to that hydrogen bond association occurs with hydrone, forms stable hydration shell, hinders flotation, substantially reduce point
Select effect.Therefore to the flotation effect of raising coal slime, it is necessary to improve the hydrophobicity on coal surface, be based on this mechanism, this hair
Bright to have selected glyoxaline ion liquid, it has apparent humidification to coal surface hydrophobic, is mainly shown as: micro- to coal
The alicyclic ring side chain of crystal structure has certain dissolution removal effect；And OH O-shaped to OH ring-type intimate association type, O ... the ether in coal
The reactivity of self-association type hydrogen bond has certain inerting effect；To ehter bond class, there is apparent destruction in functional group；Ion
Liquid is obvious to methyl, the dissolved destruction effect of methylene group in coal, makes coal surface by a series of dependent interaction
Oxygen-containing functional group reduce, functional group's reduced activity, to enhance the hydrophobicity of coal slime, the property for improving coal and impure mineral is poor
It is different, improve the floatability of coal slime.
3, the present invention is based on the characteristics of ion liquid type micro emulsion collecting agent, and formulate corresponding floatation process: first segment is quick
Ion liquid type micro emulsion collecting agent is added in stirring, accelerates coal slime to disperse in water, long agitation makes ionic liquid to coal slime mine
Slurry effect is more abundant: ion liquid type micro emulsion collecting agent sufficiently acts on coal slime surface, oxygen-containing functional group is eliminated, to increase
The hydrophobicity of coal；By stirring so that ionic liquid has certain dissolution elimination to act on part impure mineral matter in coal slime.
Second segment mixes slowly, and may insure to ensure that foaming agent rises while ion liquid type micro emulsion collecting agent and coal slime surface action
To best flotation effect；Ion liquid type micro emulsion collecting agent has stronger attraction and preferably dispersibility, is used for flotation phase
Than needing less dosage in traditional collecting agent, rate of economizing gasoline reaches 35%~50wt%, can achieve excellent flotation effect.
Specific embodiment
Illustrate technical solution of the present invention combined with specific embodiments below.
Embodiment one:
The component and quality proportioning that one ion liquid type micro emulsion collecting agent of embodiment is selected are as follows:
Raw material: No. 10 light diesel fuels 10%, [C12mim] Cl 7%, n-amyl alcohol 4%, surplus is water.
Embodiment two
The component and quality proportioning that two ion liquid type micro emulsion collecting agent of embodiment is selected are as follows:
Raw material: No. 0 light diesel fuel 20%, [C14mim] Cl 12%, n-hexyl alcohol 7%, surplus is water.
Embodiment three
The component and quality proportioning that three ion liquid type micro emulsion collecting agent of embodiment is selected are as follows:
Raw material :-No. 10 light diesel fuels 25%, [C16mim] Cl 18%, n-heptanol 10%, surplus is water.
When preparing ion liquid type micro emulsion collecting agent of the present invention, by above-mentioned hydrocarbon-type oil, primary surfactant and help surface living
Property agent ratio mixes as required, magnetic stirrer, while stirring plus water 3-5min, transparent clarification are then used at 25 DEG C
?.
Utilize the method for ion liquid type micro emulsion collecting agent coal slurry flotation of the present invention are as follows:
Step 1: two agitators of setting, are referred to as one section of agitator and two sections of agitators, one section of agitator arrangement
In a high position, two sections of agitators are arranged in low level, and ore pulp can enter two sections of agitators from one section of agitator gravity flow.
Step 2: being introduced into one section of agitator from the black water that separation system comes, this then is added into one section of agitator
The ion liquid type micro emulsion collecting agent of invention, it is desirable that additional amount is 0.2~0.6kg/t delivering dry coal slurry, guarantees that 15min's or more is fast
Speed stirs and evenly mixs the time, and blender revolving speed is 4000~5000r/min；
Step 3: the black water that second step mixes collecting agent is flowed automatically to two sections of agitators, while adding in two sections of agitators
Enter foaming agent, guarantees that 1min's or more mixes slowly mixing time, it is desirable that the additional amount of foaming agent is dry for 0.02~0.06kg/t
Coal slime, blender revolving speed are 2000~2800r/min；
Step 4: the mixture that third step is formed, which is fed flotation device, carries out flotation.
Claims (6)
1. a kind of ion liquid type micro emulsion collecting agent, which is characterized in that it is by hydrocarbon-type oil 10%~30%, primary surfactant
5%~20%, cosurfactant 3~10%, surplus is what water mixed, and the percentage is mass percent；Its
In:
The hydrocarbon-type oil is light diesel fuel；
The primary surfactant is [CnMim] Cl class ionic liquid；
The cosurfactant is at least selected from following one kind: C5~C8 alcohol.
2. ion liquid type micro emulsion collecting agent as described in claim 1, which is characterized in that the light diesel fuel is at least selected from down
State one kind: No. 10 light diesel fuels, No. 0 light diesel fuel ,-No. 10 light diesel fuels ,-No. 20 light diesel fuels and-No. 35 light diesel fuels.
3. ion liquid type micro emulsion collecting agent as described in claim 1, which is characterized in that [the CnMim] Cl class ionic liquid
Body is at least selected from following one kind: [C8mim]Cl、[C10mim]Cl、[C12mim]Cl、[C14Mim] Cl and [C16mim]Cl。
4. a kind of preparation method of ion liquid type micro emulsion collecting agent a method according to any one of claims 1-3, which is characterized in that will
Ratio mixes as required for hydrocarbon-type oil, primary surfactant and cosurfactant, and magnetic force is then used within the scope of 25 DEG C -50 DEG C
Blender stirring stirs 3-5min, the transparent clarification of micro emulsion collecting agent while stirring plus water.
5. a kind of method using any ion liquid type micro emulsion collecting agent coal slurry flotation of claim 1-3, feature
It is, the method is as follows:
Step 1: preparing ion liquid type micro emulsion collecting agent according to preparation method；
Step 2: two agitators of setting, are referred to as one section of agitator and two sections of agitators, one section of agitator is arranged in height
Position, two sections of agitators are arranged in low level, and ore pulp can enter two sections of agitators from one section of agitator gravity flow；
Step 3: being introduced into one section of agitator from the black water that separation system comes, the first step then is added into one section of agitator
The ion liquid type micro emulsion collecting agent of preparation, it is desirable that the additional amount of ion liquid type micro emulsion collecting agent is 0.2~0.6kg/t dry coal
Mud guarantees that 15min's or more quickly stirs and evenly mixs the time；
Step 4: the black water that third step mixes collecting agent is flowed automatically to two sections of agitators, while being added in two sections of agitators
Infusion guarantees that 1min's or more mixes slowly mixing time, it is desirable that the additional amount of foaming agent is 0.02~0.06kg/t delivering dry coal slurry；
Step 5: the mixture that the 4th step is formed, which is fed flotation device, carries out flotation.
6. method as claimed in claim 5, which is characterized in that blender revolving speed is 4000~5000r/min in third step；
Blender revolving speed is 2000~2800r/min in 4th step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810897817.1A CN109046791A (en) | 2018-08-08 | 2018-08-08 | A kind of ion liquid type micro emulsion collecting agent and its preparation method and application |
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| CN201810897817.1A CN109046791A (en) | 2018-08-08 | 2018-08-08 | A kind of ion liquid type micro emulsion collecting agent and its preparation method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20181221 |