CN106669960A - Dissociation and recleaning technology for coking fine grain middling coal - Google Patents
Dissociation and recleaning technology for coking fine grain middling coal Download PDFInfo
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- CN106669960A CN106669960A CN201610443561.8A CN201610443561A CN106669960A CN 106669960 A CN106669960 A CN 106669960A CN 201610443561 A CN201610443561 A CN 201610443561A CN 106669960 A CN106669960 A CN 106669960A
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/005—General arrangement of separating plant, e.g. flow sheets specially adapted for coal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
- B03B5/52—Spiral classifiers
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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
- B03D1/012—Organic compounds containing sulfur
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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
- B03D1/14—Flotation machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
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- Life Sciences & Earth Sciences (AREA)
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- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to a dissociation and recleaning technology for coking fine grain middling coal. The technology comprises the processes that the size mixing operation is conducted on the fine grain middling coal; the operation of pretreating ore to remove tailings is conducted through coarse slime separation equipment; classification is conducted through classification equipment, and fine grain coarse clean coal and coarse grain coarse clean coal are produced; dissociation is conducted on the coarse grain coarse clean coal through coal grinding equipment; the flotation operation is conducted on fine grain coarse clean coal through size mixing equipment; after size mixing is conducted on the fine grain coarse clean goal through rough separation equipment, rough separation clean coal is produced; and concentrate is conducted on the rough separation clean coal through cleaning equipment, and the clean coal is produced. The dissociation and recleaning technology has the beneficial effects that the process is simple, the technology is mature, the investment is small, the operating cost is low, and the economic benefits are remarkable; the ash content of the tailings is guaranteed, and meanwhile the materials with the medium ash content and the low ash content are fully dissociated; and it is avoided that gangue enters a grinding machine, the load of the grinding machine is reduced greatly, the energy consumption is lowered, and the recovery rate of the tailings and the clean coal is increased.
Description
Technical field
The present invention relates to work is selected again in a kind of dissociation of coal in Technology field, more particularly to coking particulate of selecting again of coal
Skill.
Background technology
The present invention is that, based on the broken practical technique selected again of coal in coking particulate, main purpose is to reclaim rare coking coal
Resource.
Rich coal resources in China, coal is complete, but each coal reserves differ greatly, and wherein coking coal resource reserves are not
To 1/3rd of gross reserves.Coal average yield is more than 30% in the coking of production every year of the Oversized Coking Coal Cleaning Plant of China, this
Coal does not reach the requirement of coking and uses often as thermal coal in the coking of part, and the irrational utilization of resource result in great wave
Take, therefore study coal dissociation in coking and select have great importance again.
Middle coal source has two kinds, and one is, because sharpness of separation is not high, to be formed by mispairing；Two is low ash extract coal and inorganic ore deposit
Often with superfine granularity mutually embedding cloth, coal selects again needs through further dissociation to thing component in this part.Domestic is many special
Family scholar selects again from the angle centering coal for improving sharpness of separation or dissociation and has carried out many beneficial explorations.Lv Yuting etc. is to high
Moral coal preparation plant individually sorts coal in jigging when transforming using a jigging machine, and final clean coal yield increased 6.76 percentage points,
Per year 1500000 tons of meters of feed coal, at least can increase benefit 20,000,000 yuan every year；Liu Junling etc. uses one section of two product dense medium eddy flow
Device to sort jigging in coal, make final clean coal yield improve 5.39%, increase profit more than 10,000,000 yuan.Zhao Wenda et al. is right
Coal has carried out dissociation and has selected experimental study again in Wuhai coal preparation plant dense medium, and the 3-0.5mm grades in crushed product are entered using TBS
Go sorting, obtain the cleaned coal that yield is 60%.But the middle coal thinner for disseminated grain size, conventional cracking and sorting is usually
Satisfied separation results cannot be obtained, this apoplexy due to endogenous wind coal generally requires coal-grinding and just can guarantee that a certain degree of solution to thinner granularity
From after such as Zhang Lei crushes to coal in the dense medium of head of the horse coal preparation plant, the big cone angle cyclone of 3-0.5mm grades Jing sorts clean coal yield
Only 4.22%, therefore again recovery of the selecting technology to coking coal resource is significant to develop coal in new particulate, it is following for dynamic
Power coal may carry out select again for middle coal and also have certain reference.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide technique is selected again in the dissociation of coal in a kind of coking particulate, to overcome
The deficiency of the conventional art of low ash extract coal is therefrom reclaimed in coal, fundamentally solving existing rare coking coal resource cannot return
Receive the problem for recycling.
The purpose of the present invention is mainly achieved through the following technical solutions：
Technique is selected again in the dissociation of coal in a kind of coking particulate, and the flow process of the technique is as follows：
S1, carry out operation of sizing mixing, ore pulp after coal is sized mixing in output particulate using coal size mixing equipment in particulate；
S2, coal in particulate is sized mixing using separation of coarse slime equipment after ore pulp thrown tail operation in advance, output sorting is thick
Cleaned coal and sorting tail coal, sorting tail coal is used as gangue treatment；
S3, carry out graded operation, the coarse-fine coal of output particulate and the coarse-fine coal of coarse grain to sorting coarse-fine coal using classifying equipoment；
S41, dissociation operation is carried out to the coarse-fine coal of coarse grain using coal-grinding equipment, product and recycled after output mill；
S42, the coarse-fine coal of particulate is mixed with floating agent, operation of sizing mixing is carried out to mixture using size mixing equipment,
The coarse-fine coal of output particulate size mixing after ore pulp；
S5, the coarse-fine coal of particulate is sized mixing using roughing separation equipment after ore pulp carry out roughly selecting operation, output is roughly selected cleaned coal and is roughly selected
Tail coal；
S6, carry out selected operation, output cleaned coal and selected tail coal to roughly selecting cleaned coal using picking equipment.
The cleaned coal for needing further process that coarse-fine coal is that sorting is obtained is sorted, sorting tail coal is used directly as spoil,
Not think to possess and further process the value that cleaned coal is obtained.The coarse-fine coal of particulate is the less coarse-fine coal of particle diameter obtained after classification,
Because its particle diameter is less, thus flotation operation can be directly carried out；The coarse-fine coal of coarse grain is larger thick of the particle diameter that obtains after classification
Cleaned coal, because its particle diameter is larger, should not directly carry out that more spoil may be contained in flotation operation, and granule, so that
Further crushed so as to become the less granule of particle diameter, repeated graded operation, removed the impurity such as spoil therein, into
For the coarse-fine coal of particulate, carry out it is further selected.
Coal-grinding equipment is short body rod mill or short body autogenous tumbling mill；
It is as follows to the recycling mode of product after mill：
After mill product meet simultaneously density level less than 1.6kg/L, yield less than 10%, ash be less than 70% when, be back to
Flow process S3, using classifying equipoment graded operation is carried out to product after mill, and is sequentially completed flow process S41, S42, S5, S6；Otherwise, return
Be back to flow process S2, using separation of coarse slime equipment Throwing tail operations carried out to product after mill, and be sequentially completed flow process S3, S41, S42,
S5、S6。
Tail coal will be roughly selected to mix with selected tail coal, output tail coal.
Coal size mixing equipment is agitator in particulate；Agitator uses BGT series surface modification pulp mixing machines；
Separation of coarse slime equipment is spiral；Spiral uses high weir spiral classifier or sinking spiral
Grader；
Size mixing equipment is action of forced stirring device；
Roughing separation equipment is flotation device；
Picking equipment is flotation column；
Classifying equipoment is vibration sieve bend, and slot size is 0.5-1mm, to ensure model of the siftage granularity in suitable flotation
In enclosing；
Floating agent includes collecting agent and foaming agent.
Collecting agent includes：Sulfide mineral collector, oxide mineral collector, oils collecting agent；
Sulfide mineral collector includes：Alkyl xanthates, dialkyl thiophosphate, rhenocure CA；
Oxide mineral collector includes：Sodium soap, quaternary ammonium salt, fatty amine；
Oils collecting agent includes：Kerosene, diesel oil.
Foaming agent includes hydroxy compounds, ethers, ketone.
The raw material of floating agent and by total weight percent proportioning be following one of which,：
After smart X oil 20%-30% mixes with kerosene 65%-75%, alkylphenol polyoxyethylene 1%-2%, methyl are added
Isobutyl carbinol 1%-2%, glycol polypropylene 1%-2%；
After sec-octyl alcohol 25%-35% mixes with kerosene 60%-70%, alkylphenol polyoxyethylene 1%-2%, methyl are added
Isobutyl carbinol 1%-2%, glycol polypropylene 1%-2%；
After sec-octyl alcohol 15%-25% mixes with α-terpinol 70%-80%, addition alkylphenol polyoxyethylene 1%-2%,
Methyl isobutyl carbinol 1%-2%, glycol polypropylene 1%-2%.
Smart X oil is that industrial products X oil refinement products, main component is the ketone containing four or five carbon atoms in molecule
Type organic.
X oil prepares the by-product of Ketohexamethylene by cyclohexane oxidation for industry, its group mainly contain Hexalin, two polyketone,
Adipic acid cyclohexyl, oligomer.
Alkylphenol polyoxyethylene be ethers suds booster, methyl isobutyl carbinol, glycol polypropylene, glycol polypropylene
For hydroxy compound species suds booster.
Smart X oil is that industrial products X oil refinement products, main component is the ketone containing four or five carbon atoms in molecule
Type organic.X oil prepares the by-product of Ketohexamethylene for industry by cyclohexane oxidation, and its component is extremely complex, containing kind more than 20
Material, mainly contains Hexalin and accounts for 3.0%；Two polyketone (cyclohexyl ring hexanone+cyclohexenyl hexamethylene ketone) account for 39.9%；Adipic acid
Cyclohexyl accounts for 8.7%；Also some other oligomer accounts for 50%.
The present invention has the beneficial effect that：
What the 1st, the present invention proposed coal in a kind of flotation that dissociation is crushed based on middle coal selects again technique, realizes to rare refining
The efficient recovery of coking coal resource.
2nd, spiral separating density is higher, can throw in advance under its optimal separating density except the broken dissociation of a part of Jing
The high ash material for going out, both ensure that tail coal ash, and while avoiding spoil enters grinding machine, significantly reduce the negative of grinding machine
Lotus, reduces energy consumption, alleviates the pollution to follow-up flotation operation after high ash material grinds.
3rd, the quick pan feeding of short body grinding machine, quick discharge, in both ensure that, low-ash material fully dissociated, and not
It is unfavorable for the overground phenomenon of follow-up flotation operation as generation.
4th, the action of forced stirring device of flotation operation can be fully dispersed by medicament, raising pharmacy effect effect, and due to
Scrubbing action of the high shear to coal particle surface, thin mud cover lid effect mitigates significantly.
5th, floating agent is mixed with by various medicaments, and the foaming effect of confection is substantially due to being used alone a kind of medicine
Effect of the agent as floating agent：Under the same terms, using the foam height of confection unit volume far above using independent
The foam height of medicament；Under the same terms, the life-span of the foam produced using confection compares what a kind of individually medicament was produced
The life-span of foam is longer.
6th, the recovery that operation ensure that low ash particle using flotation device is roughly selected, selected operation guarantees that flotation is selected using flotation column
Selecting property.
7th, proposed by the present invention to select technological process simple, technology maturation, small investment, operating cost low again, economic benefit shows
Write.
Other features and advantages of the present invention will be illustrated in the following description, also, the partial change from description
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realizing and obtain in book, claims and accompanying drawing.
Description of the drawings
Fig. 1 selects again process chart for according to the present invention.
Fig. 2 is the equipment schematic diagram for selecting technique again according to the present invention.
In Fig. 2, coal in 1 particulate, ore pulp after coal is sized mixing in 2 particulates, 3 sorting tail coals, the coarse-fine coal of 4 sortings, 5 coarse grain are coarse-fine
Coal, product after 6 mills, the coarse-fine coal of 7 particulates, 8 floating agents, the coarse-fine coal of 9 particulates size mixing after ore pulp, 10 roughly select cleaned coal, 11 cleaned coal, 12
Tail coal, A agitators, B spirals, C vibration sieve bends, the short body rod mills of D, E action of forced stirring devices, F flotation devices, G flotation
Post.
Specific embodiment
Below in conjunction with the accompanying drawings specifically describing the preferred embodiments of the present invention, wherein, accompanying drawing constitutes the application part, and
It is used to together with embodiments of the present invention explain the principle of the present invention.
Embodiment one
As shown in Fig. 2 the concrete of the present invention selects again technological process as follows
S1, by granularity, coal 1 (raw material) feeds agitator A by feed pump (being not drawn in figure) in the particulate of below 3mm
Sized mixing, ore pulp 2 after coal is sized mixing in output particulate.
S2, coal in particulate is sized mixing after ore pulp 2 feed spiral B and carry out spiral and throw tail operation, the high ash spoil of output
Granule is used as sorting tail coal 3, while output and retaining the coarse-fine coal 4 of sorting；The ash of sorting tail coal 3 can reach 70% or so, make
For gangue treatment.
S3, the coarse-fine coal 4 of sorting is fed vibration sieve bend C and carries out graded operation, the slot size of vibration sieve bend is
0.5mm, about between 0.25-1mm, oversize is the coarse-fine coal 5 of coarse grain to partition size, and siftage is the coarse-fine coal 7 of particulate.
S41, the coarse-fine coal 5 of coarse grain is fed short body rod mill D carry out coal-grinding dissociation, product 6 after output mill, by controlling mill
The coal time so that product 6 is in below 0.5mm after mill but is unlikely to overground phenomenon.Product meets density level simultaneously after mill
When being less than 70% less than 10%, ash less than 1.6kg/L, yield, flow process S3 is back to, product after mill is entered using classifying equipoment
Row graded operation, and it is sequentially completed flow process S41, S42, S5, S6；Otherwise, flow process S2 is back to, using separation of coarse slime equipment pair
Product carries out Throwing tail operations after mill, and is sequentially completed flow process S3, S41, S42, S5, S6.
S42, the coarse-fine coal 7 of particulate and floating agent 8 are fed into action of forced stirring device E carry out operation of sizing mixing, output particulate is thick
Cleaned coal size mixing after ore pulp 9.
S5, the coarse-fine coal of particulate is sized mixing after ore pulp 9 feed flotation device F and carry out roughly selecting operation first, pan feeding pulp density is
80g/L, Jing flotation device F roughly selects output ash roughly selecting cleaned coal 10 and roughly select tail coal for 14-15%.
S6, cleaned coal 10 will be roughly selected feed flotation column G and carry out selected operation, output cleaned coal 11 and selected tail coal, cleaned coal 11 will be most
Whole ash is 12.5% or so, and selected tail coal mixes output tail coal 12 with tail coal is roughly selected.
Floating agent use quality percentage ratio：After smart X oil 25% mixes with kerosene 70%, alkylphenol polyoxyethylene is added
1%th, methyl isobutyl carbinol 2%, glycol polypropylene 2%.
Embodiment two
As shown in Fig. 2 the concrete of the present invention selects again technological process as follows
S1, by granularity, coal 1 (raw material) feeds agitator A by feed pump (being not drawn in figure) in the particulate of below 3mm
Sized mixing, ore pulp 2 after coal is sized mixing in output particulate.
S2, coal in particulate is sized mixing after ore pulp 2 feed spiral B and carry out spiral and throw tail operation, the high ash spoil of output
Granule is used as sorting tail coal 3, while output and retaining the coarse-fine coal 4 of sorting；Sorting tail coal 3 is used as gangue treatment.
S3, the coarse-fine coal 4 of sorting is fed vibration sieve bend C and carries out graded operation, the slot size of vibration sieve bend is
0.7mm, about between 0.25-1mm, oversize is the coarse-fine coal 5 of coarse grain to partition size, and siftage is the coarse-fine coal 7 of particulate.
S41, the coarse-fine coal 5 of coarse grain is fed short body rod mill D carry out coal-grinding dissociation, product 6 after output mill, by controlling mill
The coal time so that product 6 is in below 0.5mm after mill but is unlikely to overground phenomenon.Product meets density level simultaneously after mill
When being less than 70% less than 10%, ash less than 1.6kg/L, yield, flow process S3 is back to, product after mill is entered using classifying equipoment
Row graded operation, and it is sequentially completed flow process S41, S42, S5, S6；Otherwise, flow process S2 is back to, using separation of coarse slime equipment pair
Product carries out Throwing tail operations after mill, and is sequentially completed flow process S3, S41, S42, S5, S6.
S42, the coarse-fine coal 7 of particulate and floating agent 8 are fed into action of forced stirring device E carry out operation of sizing mixing, output particulate is thick
Cleaned coal size mixing after ore pulp 9.
S5, the coarse-fine coal of particulate is sized mixing after ore pulp 9 feed flotation device F and carry out roughly selecting operation first, pan feeding pulp density is
80g/L, Jing flotation device F roughly selects output ash roughly selecting cleaned coal 10 and roughly select tail coal for 14-15%.
S6, cleaned coal 10 will be roughly selected feed flotation column G and carry out selected operation, output cleaned coal 11 and selected tail coal, cleaned coal 11 will be most
Whole ash is 12.5% or so, and selected tail coal mixes output tail coal 12 with tail coal is roughly selected.
Floating agent use quality percentage ratio：After sec-octyl alcohol 30% mixes with kerosene 65%, alkylphenol-polyethenoxy is added
Ether 2%, methyl isobutyl carbinol 1%, glycol polypropylene 2%.
Embodiment three
As shown in Fig. 2 the concrete of the present invention selects again technological process as follows
S1, by granularity, coal 1 (raw material) feeds agitator A by feed pump (being not drawn in figure) in the particulate of below 3mm
Sized mixing, ore pulp 2 after coal is sized mixing in output particulate.
S2, coal in particulate is sized mixing after ore pulp 2 feed spiral B and carry out spiral and throw tail operation, the high ash spoil of output
Granule is used as sorting tail coal 3, while output and retaining the coarse-fine coal 4 of sorting；Sorting tail coal 3 is used as gangue treatment.
S3, the coarse-fine coal 4 of sorting is fed vibration sieve bend C and carries out graded operation, the slot size of vibration sieve bend is
1mm, about between 0.25-1mm, oversize is the coarse-fine coal 5 of coarse grain to partition size, and siftage is the coarse-fine coal 7 of particulate.
S41, the coarse-fine coal 5 of coarse grain is fed short body rod mill D carry out coal-grinding dissociation, product 6 after output mill, by controlling mill
The coal time so that product 6 is in below 0.5mm after mill but is unlikely to overground phenomenon.Product meets density level simultaneously after mill
When being less than 70% less than 10%, ash less than 1.6kg/L, yield, flow process S3 is back to, product after mill is entered using classifying equipoment
Row graded operation, and it is sequentially completed flow process S41, S42, S5, S6；Otherwise, flow process S2 is back to, using separation of coarse slime equipment pair
Product carries out Throwing tail operations after mill, and is sequentially completed flow process S3, S41, S42, S5, S6.
S42, the coarse-fine coal 7 of particulate and floating agent 8 are fed into action of forced stirring device E carry out operation of sizing mixing, output particulate is thick
Cleaned coal size mixing after ore pulp 9.
S5, the coarse-fine coal of particulate is sized mixing after ore pulp 9 feed flotation device F and carry out roughly selecting operation first, pan feeding pulp density is
80g/L, Jing flotation device F roughly selects output ash roughly selecting cleaned coal 10 and roughly select tail coal for 14-15%.
S6, cleaned coal 10 will be roughly selected feed flotation column G and carry out selected operation, output cleaned coal 11 and selected tail coal, cleaned coal 11 will be most
Whole ash is 12.5% or so, and selected tail coal mixes output tail coal 12 with tail coal is roughly selected.
Floating agent use quality percentage ratio：After sec-octyl alcohol 23% mixes with α-terpinol 73%, alkyl phenol polyoxy is added
Vinyl Ether 1.5%, methyl isobutyl carbinol 1.5%, glycol polypropylene 1%.
In sum, technique is selected again in the dissociation for embodiments providing coal in a kind of coking particulate, and this selects again the work to be
Skill crushes the efficient recovery for selecting technique again, realizing to rare coking coal resource of coal in a kind of flotation of dissociation based on middle coal；
This selects again simple technological process, technology maturation, small investment, operating cost low, remarkable in economical benefits.Additionally, spiral point
Density higher (generally in more than 1.6Kg/L) is selected, can in advance be thrown under its optimal separating density and be dissociateed except a part of Jing is broken
High ash material, both ensure that tail coal ash, and while avoiding spoil enters grinding machine, significantly reduce the load of grinding machine,
Energy consumption is reduced, the pollution to follow-up flotation operation after high ash material grinds is alleviated；Short body grinding machine (autogenous tumbling mill or rod milling
Machine) quick pan feeding, quick discharge, in both ensure that, low-ash material fully dissociated, be unlikely to again after generation is unfavorable for
The overground phenomenon of continuous flotation operation；Bulk flotation medicament not only increases the amount of expansion of floatation process, also increases foam
Life-span；The action of forced stirring device of flotation operation can be fully dispersed by medicament, improves pharmacy effect effect, and due to high shear
Scrubbing action to coal particle surface, thin mud cover lid effect mitigates significantly；Roughly select operation and low ash particle ensure that using flotation device
Recovery, selected operation guarantees flotation selectivity using flotation column.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
All should be included within the scope of the present invention.
Claims (10)
1. technique is selected again in the dissociation of coal in a kind of coking particulate, it is characterised in that the flow process of the technique is as follows：
S1, carry out operation of sizing mixing, ore pulp after coal is sized mixing in output particulate using coal size mixing equipment in particulate；
S2, coal in the particulate is sized mixing using separation of coarse slime equipment after ore pulp thrown tail operation in advance, output sorting is thick
Cleaned coal and sorting tail coal, sorting tail coal is used as gangue treatment；
S3, graded operation, the coarse-fine coal of output particulate and the coarse-fine coal of coarse grain are carried out to the coarse-fine coal of the sorting using classifying equipoment；
S41, dissociation operation is carried out to the coarse-fine coal of the coarse grain using coal-grinding equipment, product and recycled after output mill；
S42, the coarse-fine coal of the particulate is mixed with floating agent, operation of sizing mixing is carried out to mixture using size mixing equipment,
The coarse-fine coal of output particulate size mixing after ore pulp；
S5, the coarse-fine coal of the particulate is sized mixing using roughing separation equipment after ore pulp carry out roughly selecting operation, output is roughly selected cleaned coal and is roughly selected
Tail coal；
S6, selected operation, output cleaned coal and selected tail coal are carried out to the cleaned coal of roughly selecting using picking equipment.
2. technique is selected again in the dissociation of coal in coking particulate according to claim 1, it is characterised in that the coal-grinding equipment is
Short body rod mill or short body autogenous tumbling mill；
It is as follows to the recycling mode of product after the mill：
After the mill product meet simultaneously density level less than 1.6kg/L, yield less than 10%, ash be less than 70% when, be back to
Flow process S3, using classifying equipoment graded operation is carried out to product after mill, and is sequentially completed flow process S41, S42, S5, S6；It is no
Then, flow process S2 is back to, Throwing tail operations is carried out to product after mill using separation of coarse slime equipment, and be sequentially completed flow process
S3、S41、S42、S5、S6。
3. technique is selected again in the dissociation of coal in coking particulate according to claim 1, it is characterised in that roughly select tail coal by described
Mix with selected tail coal, output tail coal.
4. technique is selected again in the dissociation of coal in coking particulate according to claim 1, it is characterised in that coal is adjusted in the particulate
Slurry equipment is agitator；The agitator uses BGT series surface modification pulp mixing machines；
The separation of coarse slime equipment is spiral；The spiral uses high weir spiral classifier or sinking
Spiral classifier；
The size mixing equipment is action of forced stirring device；
The roughing separation equipment is flotation device；
The picking equipment is flotation column；
The classifying equipoment is vibration sieve bend, and slot size is 0.5-1mm, to ensure model of the siftage granularity in suitable flotation
In enclosing.
5. technique is selected again in the dissociation of coal in coking particulate according to claim 1, it is characterised in that the floating agent bag
Include collecting agent and foaming agent.
6. technique is selected again in the dissociation of coal in coking particulate according to claim 5, it is characterised in that the collecting agent bag
Include：Sulfide mineral collector, oxide mineral collector, oils collecting agent；
The sulfide mineral collector includes：Alkyl xanthates, dialkyl thiophosphate, rhenocure CA；
The oxide mineral collector includes：Sodium soap, quaternary ammonium salt, fatty amine；
The oils collecting agent includes：Kerosene, diesel oil.
7. technique is selected again in the dissociation of coal in coking particulate according to claim 5, it is characterised in that the foaming agent includes
Hydroxy compounds, ethers, ketone.
8. technique is selected again in the dissociation of coal in coking particulate according to claim 5, it is characterised in that the floating agent
Raw material and by total weight percent proportioning be following one of which：
Smart X oil 20%-30%, kerosene 65%-75%, alkylphenol polyoxyethylene 1%-2%, methyl isobutyl carbinol 1%-
2%th, glycol polypropylene 1%-2%；
Sec-octyl alcohol 25%-35%, kerosene 60%-70%, alkylphenol polyoxyethylene 1%-2%, methyl isobutyl carbinol 1%-
2%th, glycol polypropylene 1%-2%；
Sec-octyl alcohol 15%-25%, α-terpinol 70%-80%, alkylphenol polyoxyethylene 1%-2%, methyl isobutyl carbinol
1%-2%, glycol polypropylene 1%-2%.
9. technique is selected again in the dissociation of coal in coking particulate according to claim 8, it is characterised in that the smart X oil is, work
Industry product X oil refinement products, main component is the ketone Organic substance containing four or five carbon atoms in molecule.
10. technique is selected again in the dissociation of coal in the coking particulate according to claim 1-9, it is characterised in that the X oil is work
Industry prepares the by-product of Ketohexamethylene by cyclohexane oxidation, and its group mainly contains Hexalin, two polyketone, adipic acid cyclohexyl, low
Polymers.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252735A (en) * | 2017-06-21 | 2017-10-17 | 中南大学 | A kind of sulfide flotation composite collector and its preparation method and application |
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| CN109078747A (en) * | 2018-06-26 | 2018-12-25 | 山西天地王坡煤业有限公司 | The method and device of coarse-fine coal classification production |
| CN109174463A (en) * | 2018-08-21 | 2019-01-11 | 中国矿业大学 | Collecting agent and preparation method, method for floating for oxidized coal coal slime flotation |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802976A (en) * | 1988-01-04 | 1989-02-07 | Miller Francis G | Method for recovering fine clean coal |
| CA2214518A1 (en) * | 1995-03-08 | 1996-09-12 | Markku Elias Kuusisto | Method for grinding of granular material and grinding equipment |
| CN103831164A (en) * | 2014-02-24 | 2014-06-04 | 太原理工大学 | Gravity-flotation joint separation technology for coking middlings |
| CN104437831A (en) * | 2014-11-03 | 2015-03-25 | 中国矿业大学 | Gravity separation middling coal separation technology |
| CN104525358A (en) * | 2014-12-22 | 2015-04-22 | 纪玉华 | Process of coarse coal slime back washing in pre-desliming dense medium cyclone sorting |
-
2016
- 2016-06-20 CN CN201610443561.8A patent/CN106669960B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802976A (en) * | 1988-01-04 | 1989-02-07 | Miller Francis G | Method for recovering fine clean coal |
| CA2214518A1 (en) * | 1995-03-08 | 1996-09-12 | Markku Elias Kuusisto | Method for grinding of granular material and grinding equipment |
| WO1996027443A1 (en) * | 1995-03-08 | 1996-09-12 | Valtion Teknillinen Tutkimuskeskus | Method for grinding of granular material and grinding equipment |
| CN103831164A (en) * | 2014-02-24 | 2014-06-04 | 太原理工大学 | Gravity-flotation joint separation technology for coking middlings |
| CN104437831A (en) * | 2014-11-03 | 2015-03-25 | 中国矿业大学 | Gravity separation middling coal separation technology |
| CN104525358A (en) * | 2014-12-22 | 2015-04-22 | 纪玉华 | Process of coarse coal slime back washing in pre-desliming dense medium cyclone sorting |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252735A (en) * | 2017-06-21 | 2017-10-17 | 中南大学 | A kind of sulfide flotation composite collector and its preparation method and application |
| CN107252735B (en) * | 2017-06-21 | 2018-12-14 | 中南大学 | A kind of sulfide flotation composite collector and its preparation method and application |
| CN108246493A (en) * | 2018-01-22 | 2018-07-06 | 西安科技大学 | A kind of comprehensive utilization process for reducing oil shale ash content |
| CN109078747A (en) * | 2018-06-26 | 2018-12-25 | 山西天地王坡煤业有限公司 | The method and device of coarse-fine coal classification production |
| CN109174463A (en) * | 2018-08-21 | 2019-01-11 | 中国矿业大学 | Collecting agent and preparation method, method for floating for oxidized coal coal slime flotation |
| CN109174463B (en) * | 2018-08-21 | 2020-02-28 | 中国矿业大学 | Collecting agent for flotation of oxidized coal slime, preparation method and flotation method |
| US10906048B1 (en) * | 2019-07-18 | 2021-02-02 | Taiyuan University Of Technology | Process for macroscopically separating maceral concentrate from raw coal |
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