CN106076658A - A kind of method for separating of difficult-to-float coal based on nano bubble - Google Patents
A kind of method for separating of difficult-to-float coal based on nano bubble Download PDFInfo
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- CN106076658A CN106076658A CN201610444444.3A CN201610444444A CN106076658A CN 106076658 A CN106076658 A CN 106076658A CN 201610444444 A CN201610444444 A CN 201610444444A CN 106076658 A CN106076658 A CN 106076658A
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- 239000003245 coal Substances 0.000 title claims abstract description 70
- 239000002101 nanobubble Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007667 floating Methods 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 238000005188 flotation Methods 0.000 claims abstract description 21
- 239000004088 foaming agent Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 14
- 238000013019 agitation Methods 0.000 claims abstract description 10
- 238000004513 sizing Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 21
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims description 12
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- HVUMOYIDDBPOLL-UHFFFAOYSA-N 2-(3,4-Dihydroxyoxolan-2-yl)-2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)C1OCC(O)C1O HVUMOYIDDBPOLL-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 239000003250 coal slurry Substances 0.000 claims description 6
- OXVXWUDYARFPLN-UHFFFAOYSA-N ethylazanium;hydron;sulfate Chemical compound CC[NH3+].OS([O-])(=O)=O OXVXWUDYARFPLN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims description 6
- JHJUUEHSAZXEEO-UHFFFAOYSA-M sodium;4-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=C(S([O-])(=O)=O)C=C1 JHJUUEHSAZXEEO-UHFFFAOYSA-M 0.000 claims description 6
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 6
- 229920001219 Polysorbate 40 Polymers 0.000 claims description 5
- 235000010483 polyoxyethylene sorbitan monopalmitate Nutrition 0.000 claims description 5
- 239000000249 polyoxyethylene sorbitan monopalmitate Substances 0.000 claims description 5
- 229940101027 polysorbate 40 Drugs 0.000 claims description 5
- SJWFXCIHNDVPSH-UHFFFAOYSA-N octan-2-ol Chemical group CCCCCCC(C)O SJWFXCIHNDVPSH-UHFFFAOYSA-N 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000002411 adverse Effects 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 239000010742 number 1 fuel oil Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000006260 foam Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000003350 kerosene Substances 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000197194 Bulla Species 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 208000002352 blister Diseases 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000008258 liquid foam Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- 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
- B03D1/02—Froth-flotation processes
- B03D1/023—Carrier flotation; Flotation of a carrier material to which the target material attaches
-
- 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
-
- 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
- B03D1/02—Froth-flotation processes
-
- 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
- B03D2201/04—Frothers
-
- 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
Landscapes
- Physical Water Treatments (AREA)
Abstract
The invention discloses the method for separating of a kind of difficult-to-float coal based on nano bubble.Feed Venturi tube through pump after being mixed homogeneously with appropriate foaming agent by water, by the jet action of Venturi tube, the solution containing foaming agent produces substantial amounts of bubble, including normal atmospheric bubble and nano bubble.Bubbles solution feeds in homemade de-bubble bucket, and the air pocket that buoyancy is bigger rises floating to liquid level in homemade de-bubble bucket and ruptures, and nano bubble is mingled with in the solution with water movement owing to buoyancy is less.Feeding in normal agitation bucket with coal slime and appropriate floating agent containing nano bubble solution and size mixing, after sizing mixing, ore pulp produces cleaned coal and two kinds of products of tail coal through flotation column.The invention has the beneficial effects as follows the feature utilizing nano bubble preferentially to gather on the surface that hydrophobicity is good, widen the hydrophobicity of cleaned coal and spoil, the accumulation of nano bubble reduces the cover cap effect in coal particle surface of the thin mud the most significantly, significantly reduces the pollution of thin mud, improves essence coal yield.
Description
Technical field
The present invention relates to a kind of slime separation technology, specifically provide the sorting of a kind of difficult-to-float coal based on nano bubble
Method.
Background technology
Raising, the deterioration of Resource geology condition, coal preparation plant's maximization construction and weight along with Mechanized Coal Mining Operation in China degree
The extensive application of media separation technology, high ash difficult separation coal mud ratio sharply increases, and presents continuation degradating trend, slime separation
Contradiction is more prominent.Flotation at present is to process one of topmost means of coal slime, and in conventional floatation process, hydrophobicity is preferable
Coal particle and bubble collide and stick on bubble, and rise with bubble and eventually become floatation clean coal floating to foam mutually；And dredge
The poor spoil granule of aqueous due to its be relatively difficult to adhere to or can be captured by bubble in ore pulp but foam mutually in again due to
Foam rupture or the factor such as liquid foams drainage again returns in ore pulp.But high ash difficult separation coal mud is in conventional floatation process
It is difficult to efficient separation, on the one hand poor due to its hydrophobicity, relatively it is difficult to be captured by bubble and make during bubble mineralization
Becoming the loss of cleaned coal, on the other hand higher due to its ash, thin cement content is big, easily during sizing mixing cover cap at the coal of low ash
Floatation clean coal is caused serious pollution by particle surface.
For the difficult problem that difficult-to-float coal flotation efficiency is low, many experts and scholars both domestic and external have done a lot of useful spy
Rope, these work are substantially attributed to the exploitation of pharmaceutical preparations, the improvement of existing sorting process and improve the sorting of equipment
The several respects such as energy, such as, add dispersant etc. and reduce the thin mud cover cap in coal particle surface, thus reduce cleans ash
Purpose；To add in ore pulp after original reagent emulsifying, by the dispersion further of oil droplet increase collecting agent specific surface area thus
Improve flotation effect；Based on coal slime own characteristic, flotation etc. in the way of low concentration pan feeding, this is improving difficult-to-float coal sorting effect
Rate aspect achieves certain effect, but the most fundamentally solves the problem that difficult-to-float coal flotation efficiency is low.Therefore need badly
Develop a kind of new sorting technology to make up existing slime separation technology deficiency in terms of difficult-to-float coal sorting, it is achieved difficult floating
The efficient separation of coal slime reclaims.
Difficult-to-float coal flotation it is crucial that the collision of granule and bubble and adhesion, and nano bubble has and is preferentially preferably dredging
The characteristic of the coal particle surface accumulation of aqueous, this can improve granule and bubble hit and the probability of attachment and minimizing comes off generally
Rate, thus significantly improve the response rate of difficult-to-float coal.Additionally, due to nano bubble is at the covering of coal particle surface, the cover of thin mud
Lid effect weakens the most significantly, is effectively reduced the pollution to floatation clean coal of the thin mud.Based on this, the present invention proposes at difficult-to-float coal
Floatation process in introduce diameter and be about the bubble of tens nanometers, enhance the floatation process of difficult-to-float coal, substantially increase it
The response rate.
Summary of the invention
Object of the present invention is to provide the method for separating of a kind of difficult-to-float coal based on nano bubble, by by nanometer
Bubble introduces flotation, fundamentally solves the problem that flotation recovery rate that difficult-to-float coal hydrophobicity difference causes is low.
The technical scheme is that
Comprise the following steps: water (2) is fed with foaming agent (1) in agitator (A) and mix, mixture after stirring
(3) feeding Venturi tube (C) by mixture feed pump (B), dissolved air is also under the suction function that jet produces for mixture
Producing a large amount of bubbles at Venturi tube (C) tail end, bubbles solution (4) feeds in the middle of the top of de-bubble bucket (D), de-bubble bucket (D)
Being provided with a baffle plate, be divided into two parts, two parts that bucket is divided into only have bottom to connect, nano bubble with solution by de-bubble
The top of the side of bucket is injected, bottom communicating passage enter the opposite side of de-bubble bucket (D), and the air pocket in mixture is at buoyancy
Rising under effect floating to de-bubble bucket top and gradually rupture, the bubble so produced through Venturi tube (C) is big after de-bubble bucket (D)
Bubble is removed, and leaves nano bubble in the solution, feeds flowsheet of slurry agitation bucket (F) containing nano bubble solution (5) through pump (E), with
Time appropriate coal slime (7) and floating agent (8) are fed in flowsheet of slurry agitation bucket (F), nano bubble accumulates in particle surface, significantly
Improving the hydrophobicity of coal particle, after sizing mixing, ore pulp (9) floats in feed pump (G) feeds adverse current static microbubble floatation column (H)
Choosing, finally produces cleaned coal (10) and (11) two kinds of products of tail coal
Further, described coal slime is-325 meshes.
Further, described foaming agent is sec-octyl alcohol.
Further, described floating agent is made up of the material of following weight parts: kerosene: 20～80 parts, ethyl ammonia sulfate: 5-
13 parts, polysorbate40: 1-10 part, polyoxyethylenated alcohol sodium sulfate: 0.01-0.05 part, p-methyl benzenesulfonic acid: 0.01-0.07
Part, sorbester p18: 1-3 part, phthalic anhydride: 1-3 part, dodecylbenzene sodium sulfonate: 0.03-0.1 part, phthalic anhydride: 0.01-0.06
Part.
Further, described de-bubble bucket (D) is to be provided with a baffle plate in the middle of conventional drum, is divided into two
Point, two parts that bucket is divided into only have bottom to connect, and nano bubble is injected by the top of the side of de-bubble bucket with solution, by bottom
Communicating passage enters de-bubble bucket (D) opposite side.
Further, the proportioning of described water and foaming agent is every liter of water 0.01-0.1g foaming agent；Nano bubble solution, coal
Mud, the proportioning of floating agent are that every liter of nano bubble solution adds 60-90g delivering dry coal slurry, 0.01-0.04g floating agent.
Further, described floating agent is made up of the material of following weight parts: kerosene: 76 parts, ethyl ammonia sulfate: 9 parts, tell
Temperature 40:7 part, polyoxyethylenated alcohol sodium sulfate: 0.03 part, p-methyl benzenesulfonic acid: 0.02 part, sorbester p18: 2.1 parts, adjacent benzene
Dicarboxylic acid anhydride: 1.6 parts, dodecylbenzene sodium sulfonate: 0.07 part, phthalic anhydride: 0.03 part.
Further, the proportioning of described water and foaming agent is every liter of water 0.016g foaming agent；Nano bubble solution, coal slime,
The proportioning of floating agent is that every liter of nano bubble solution adds 80g delivering dry coal slurry, 0.024g floating agent.
Instant invention overcomes the deficiency of the sorting technology of traditional difficult-to-float coal, it is proposed that a kind of difficulty based on nano bubble
The method for separating of float coal mud, utilizes nano bubble preferentially in the feature of hydrophobic surface accumulation, widens low ash particle and height ash cash
The hydrophobic difference of stone, in flotation, poor selectivity, medicine consumption are greatly, the response rate is relatively low, cleans ash is easy to solve difficult-to-float coal
The problem exceeded standard.In addition, the present invention also has the advantage that
It is unique that the method for separating that the present invention proposes improves difficult-to-float coal flotation selectivity thinking novelty, solves traditional bubble
An inefficient difficult problem in foam flotation, realizes significant to difficult-to-float coal efficient separation process.
The present invention to sorting reagent be optimized, the especially design of floating agent, content proportioning, to difficult float coal
Mud is prone to flotation, improves efficiency, hence it is evident that more effective than traditional flotation reagent.
Present invention employs the de-bubble bucket of particular design, produce a large amount of nano bubble easy, this equipment seems simple, but right
High in the efficiency removing air pocket, improve production efficiency.
In a word, method for separating that the present invention proposes and device, simple, small investment, operating cost are low, economic benefit shows
Write.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
In figure: 1-foaming agent, 2-water, 3-foaming agent and aqueous mixtures, 4-bubble mixture, 5,6-containing nano bubble molten
Liquid, 7-coal slime, 8-floating agent, 9-size mixing after ore pulp, 10-floatation clean coal, 11-floating tail-coal, A-agitator, B-mixture is given
Material pump, C-Venturi tube, D-self-control is except bulla bucket, E-nano bubble solution feeding pump, F-flowsheet of slurry agitation bucket, G-ore pulp feed
Pump, H-flotation column.
Detailed description of the invention
Specifically describing the preferred embodiments of the present invention below in conjunction with the accompanying drawings, wherein, accompanying drawing constitutes the application part, and
Together with embodiments of the present invention for explaining the principle of the present invention.
Embodiment 1
Such as Fig. 1, being fed with sec-octyl alcohol foaming agent (1) by water (2) in agitator (A) and mix, the proportioning of water and foaming agent is
Every liter of water 0.07g foaming agent, the mixture (3) after stirring feeds Venturi tube (C) by mixture feed pump (B), mixed
Compound under the suction function that jet produces dissolved air and Venturi tube (C) tail end produce a large amount of bubbles, bubbles solution
(4) feed the top of de-bubble bucket (D), in the middle of de-bubble bucket (D), a baffle plate be installed, be divided into two parts, bucket be divided into two
Part only bottom connection, nano bubble is entered de-bubble bucket (D) right side, the air in mixture with solution by bottom communicating passage
Bubble rises under buoyancy floating to de-bubble bucket top and gradually ruptures, and the bubble so produced through Venturi tube (C) is through de-bubble
Bucket (D) air pocket afterwards is removed, and leaves nano bubble in the solution, feeds flowsheet of slurry agitation containing nano bubble solution (5) through pump (E)
-325 appropriate mesh coal slimes (7) and floating agent (8) are fed in flowsheet of slurry agitation bucket (F) by bucket (F) simultaneously, and nano bubble is molten
Liquid, coal slime, the proportioning of floating agent are that every liter of nano bubble solution adds 77g delivering dry coal slurry, 0.018g floating agent, nano bubble
Accumulating in particle surface, be greatly improved the hydrophobicity of coal particle, after sizing mixing, ore pulp (9) feeds the most static micro-through feed pump (G)
Bubble flotation column (H) carries out flotation, finally produces cleaned coal (10) and (11) two kinds of products of tail coal；
Described floating agent is made up of the material of following weight parts: kerosene: 55 parts, ethyl ammonia sulfate: 8.6 parts, polysorbate40:
5.6 parts, polyoxyethylenated alcohol sodium sulfate: 0.027 part, p-methyl benzenesulfonic acid: 0.033 part, sorbester p18: 2.68 parts, adjacent benzene
Dicarboxylic acid anhydride: 2.6 parts, dodecylbenzene sodium sulfonate: 0.055 part, phthalic anhydride: 0.04 part.
Embodiment 2
Such as Fig. 1, being fed with sec-octyl alcohol (1) by water (2) in agitator (A) and mix, the proportioning of water and foaming agent is every liter of water
0.033g foaming agent, the mixture (3) after stirring feeds Venturi tube (C) by mixture feed pump (B), and mixture exists
Jet produce suction function under dissolved air and Venturi tube (C) tail end produce a large amount of bubbles, bubbles solution (4) feeds
The top of de-bubble bucket (D), is provided with a baffle plate in the middle of de-bubble bucket (D), is divided into two parts, and two parts that bucket is divided into are only
Bottom connects, and nano bubble is entered de-bubble bucket (D) right side with solution by bottom communicating passage, and the air pocket in mixture is at buoyancy
Rising under effect floating to de-bubble bucket top and gradually rupture, the bubble so produced through Venturi tube (C) is big after de-bubble bucket (D)
Bubble is removed, and leaves nano bubble in the solution, feeds flowsheet of slurry agitation bucket (F) containing nano bubble solution (5) through pump (E), with
In time, feed in flowsheet of slurry agitation bucket (F) by-325 mesh coal slimes (7) and floating agent (8), nano bubble solution, coal slime, flotation medicine
The proportioning of agent is that every liter of nano bubble solution adds 80g delivering dry coal slurry, 0.027g floating agent, and nano bubble accumulates in granule table
Face, is greatly improved the hydrophobicity of coal particle, and after sizing mixing, ore pulp (9) is in feed pump (G) feeds adverse current static microbubble floatation column (H)
Carry out flotation, finally produce cleaned coal (10) and (11) two kinds of products of tail coal；
Described floating agent is made up of the material of following weight parts: kerosene: 65 parts, ethyl ammonia sulfate: 5.65 parts, polysorbate40:
2.2 parts, polyoxyethylenated alcohol sodium sulfate: 0.026 part, p-methyl benzenesulfonic acid: 0.044 part, sorbester p18: 1.26 parts, adjacent benzene
Dicarboxylic acid anhydride: 2.1 parts, dodecylbenzene sodium sulfonate: 0.034 part, phthalic anhydride: 0.026 part.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replacement,
All should contain within protection scope of the present invention.
Claims (8)
1. the method for separating of a difficult-to-float coal based on nano bubble, it is characterised in that comprise the following steps: by water (2) with
Foaming agent (1) feeds mixing in agitator (A), and after stirring, mixture (3) feeds venturi by mixture feed pump (B)
Pipe (C), mixture under the suction function that jet produces dissolved air and Venturi tube (C) tail end generation a large amount of bubbles, contain
Bubble solution (4) feeds and is provided with a baffle plate in the middle of the top of de-bubble bucket (D), de-bubble bucket (D), is divided into two parts, bucket quilt
The two parts being divided into only have bottom to connect, and nano bubble is injected by the top of the side of de-bubble bucket with solution, logical by bottom connection
Road enters the opposite side of de-bubble bucket (D), and the air pocket in mixture rises under buoyancy floating to de-bubble bucket top and gradually breaks
Splitting, the bubble air pocket after de-bubble bucket (D) so produced through Venturi tube (C) is removed, and stays nano bubble at solution
In, feed flowsheet of slurry agitation bucket (F) containing nano bubble solution (5) through pump (E), simultaneously by appropriate coal slime (7) and floating agent (8)
Feeding in flowsheet of slurry agitation bucket (F), nano bubble accumulates in particle surface, is greatly improved the hydrophobicity of coal particle, ore pulp after sizing mixing
(9) in feed pump (G) feeds adverse current static microbubble floatation column (H), carry out flotation, finally produce cleaned coal (10) and tail coal (11)
Two kinds of products.
2. the method for claim 1, it is characterised in that: described coal slime is-325 meshes.
3. the method for claim 1, it is characterised in that: described foaming agent is sec-octyl alcohol.
4. the method for claim 1, it is characterised in that: described floating agent is made up of the material of following weight parts: coal
Oil: 20～80 parts, ethyl ammonia sulfate: 5-13 part, polysorbate40: 1-10 part, polyoxyethylenated alcohol sodium sulfate: 0.01-0.05 part,
P-methyl benzenesulfonic acid: 0.01-0.07 part, sorbester p18: 1-3 part, phthalic anhydride: 1-3 part, dodecylbenzene sodium sulfonate:
0.03-0.1 part, phthalic anhydride: 0.01-0.06 part.
5. the method for claim 1, it is characterised in that: described de-bubble bucket (D) is to install in the middle of conventional drum
Having a baffle plate, be divided into two parts, two parts that bucket is divided into only have bottom to connect, nano bubble with solution by de-bubble bucket
The top of side is injected, bottom communicating passage enter de-bubble bucket (D) opposite side.
6. the method for claim 1, it is characterised in that: the proportioning of described water and foaming agent is every liter of water 0.01-0.1g
Foaming agent；Nano bubble solution, coal slime, the proportioning of floating agent be every liter of nano bubble solution add 60-90g delivering dry coal slurry,
0.01-0.04g floating agent.
7. method as claimed in claim 4, it is characterised in that: described floating agent is made up of the material of following weight parts: coal
Oil: 76 parts, ethyl ammonia sulfate: 9 parts, polysorbate40: 7 parts, polyoxyethylenated alcohol sodium sulfate: 0.03 part, p-methyl benzenesulfonic acid:
0.02 part, sorbester p18: 2.1 parts, phthalic anhydride: 1.6 parts, dodecylbenzene sodium sulfonate: 0.07 part, phthalic anhydride: 0.03 part.
8. method as claimed in claim 6, it is characterised in that: the proportioning of described water and foaming agent is that every liter of water 0.016g bubbles
Agent；Nano bubble solution, coal slime, the proportioning of floating agent are that every liter of nano bubble solution adds 80g delivering dry coal slurry, 0.024g flotation
Medicament.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610444444.3A CN106076658B (en) | 2016-06-20 | 2016-06-20 | Difficult-to-float coal slime separation method based on nano bubbles |
| PCT/CN2017/088700 WO2017219924A1 (en) | 2016-06-20 | 2017-06-16 | Method of selectively separating coal slurry with poor floatation employing nanobubbles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610444444.3A CN106076658B (en) | 2016-06-20 | 2016-06-20 | Difficult-to-float coal slime separation method based on nano bubbles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106076658A true CN106076658A (en) | 2016-11-09 |
| CN106076658B CN106076658B (en) | 2017-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610444444.3A Active CN106076658B (en) | 2016-06-20 | 2016-06-20 | Difficult-to-float coal slime separation method based on nano bubbles |
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| Country | Link |
|---|---|
| CN (1) | CN106076658B (en) |
| WO (1) | WO2017219924A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107267236A (en) * | 2017-06-27 | 2017-10-20 | 深圳瑞科天启科技有限公司 | The technique and the coal gasifying process using the technique of a kind of utilization coal or gangue production high heating value water-coal-slurry |
| WO2017219924A1 (en) * | 2016-06-20 | 2017-12-28 | 中国矿业大学 | Method of selectively separating coal slurry with poor floatation employing nanobubbles |
| WO2017219923A1 (en) * | 2016-06-20 | 2017-12-28 | 中国矿业大学 | Flotation method for coal having poor floatation |
| WO2019056802A1 (en) * | 2017-09-20 | 2019-03-28 | 深圳瑞科天启科技有限公司 | Method for increasing energy density of liquid fuel or gaseous fuel |
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| CN112691791B (en) * | 2020-12-02 | 2022-10-11 | 河南省核力科技发展有限公司 | Preparation method of stabilizing agent and flotation promoter for water-based coal slime collecting agent |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219924A1 (en) * | 2016-06-20 | 2017-12-28 | 中国矿业大学 | Method of selectively separating coal slurry with poor floatation employing nanobubbles |
| WO2017219923A1 (en) * | 2016-06-20 | 2017-12-28 | 中国矿业大学 | Flotation method for coal having poor floatation |
| CN107267236A (en) * | 2017-06-27 | 2017-10-20 | 深圳瑞科天启科技有限公司 | The technique and the coal gasifying process using the technique of a kind of utilization coal or gangue production high heating value water-coal-slurry |
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| WO2019056802A1 (en) * | 2017-09-20 | 2019-03-28 | 深圳瑞科天启科技有限公司 | Method for increasing energy density of liquid fuel or gaseous fuel |
| CN110479501A (en) * | 2019-09-20 | 2019-11-22 | 鞍钢集团矿业有限公司 | A kind of subparticle nano bubble method for floating and system |
| CN111515027A (en) * | 2020-03-30 | 2020-08-11 | 中国矿业大学 | Low-rank coal nano-bubble flotation method |
| CN111515027B (en) * | 2020-03-30 | 2022-03-04 | 中国矿业大学 | Low-rank coal nano-bubble flotation method |
| CN112090594A (en) * | 2020-10-15 | 2020-12-18 | 西南科技大学 | Nano-bubble flotation machine |
| CN115138483A (en) * | 2022-08-16 | 2022-10-04 | 中国矿业大学 | Coal gasification slag flotation decarburization method and system based on surface microbubbles |
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| CN106076658B (en) | 2017-05-24 |
| WO2017219924A1 (en) | 2017-12-28 |
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