CN109701729A - A kind of middle coal clean utilization production technology - Google Patents
A kind of middle coal clean utilization production technology Download PDFInfo
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- CN109701729A CN109701729A CN201910033098.3A CN201910033098A CN109701729A CN 109701729 A CN109701729 A CN 109701729A CN 201910033098 A CN201910033098 A CN 201910033098A CN 109701729 A CN109701729 A CN 109701729A
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Abstract
The invention discloses a kind of middle coal clean utilization production technologies, its key points of the technical solution are that: the following steps are included: S1, raw coal preliminary working；S2, it is aqueous containing be situated between in the preliminary de-mediated of coal, obtain qualified medium；S3, it is rinsed containing coal in Jie in sculping screen tail portion, it obtains dilute Jie's liquid: being rinsed to obtain aqueous middle coal and dilute Jie's liquid containing coal sculping screen tail portion in being situated between after preliminary de-mediated in step S2, dilute Jie's liquid is passed through multilayer overflow and stands sink, after solid content reaches 1/2 in single layer standing sink, the solid-liquid that the single layer stands in sink, which all pours into magnetic separator, to be sorted, the liquid for flowing through multilayer overflow standing sink is passed through in centrifugal filter again, green be also passed into magnetic separator out of solid matter is sorted in centrifugal filter, enter by the magnetic material that magnetic separator sub-elects and closes Jie's cylinder, and cash magnetic tail cylinder in the backwater entrance of nonmagnetic object；S4, high-frequency screen screening；It is an advantage of the invention that improving dielectric film filter utilization rate during middle coal de-mediated.
Description
Technical field
The present invention relates to coal-washing technique fields, and in particular to a kind of middle coal clean utilization production technology.
Background technique
Coal washing is an indispensable process of coal deep processing, and directly mined coal is original from mine
Coal, raw coal has been mixed into many impurity in recovery process, and the quality of coal is also different, and fixed ash is small and fixed ash is big
Coal it is mixed in together.Coal washing is exactly to reject the impurity in raw coal, or fat coal and low-grade coal are carried out disaggregatedly
A kind of industrial technology.Generated product has been generally divided into spoil, middle coal and block cleaned coal after coal washing process, how will be in middle coal
Impurity is removed, and efficiently washes out the higher middle coal of precision and has great importance.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of middle coal clean utilization production technology,
Its advantage is that improving dielectric film filter utilization rate during middle coal de-mediated.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of middle coal clean utilization production
Technique, comprising the following steps:
S1, raw coal preliminary working: raw coal progress preliminary working is obtained aqueous containing coal in being situated between；
S2, it is aqueous containing be situated between in the preliminary de-mediated of coal, obtain qualified medium: obtained in step S1 it is aqueous containing be situated between in coal enter sculping screen
De-mediated is obtained containing coal and aqueous qualified medium in being situated between, and aqueous qualified medium, which is recycled to, closes Jie's cylinder, and the medium closed in Jie's cylinder is delivered to
Three-product cyclone；
S3, it is rinsed containing coal in being situated between in sculping screen tail portion, obtains dilute Jie's liquid: containing coal de-mediated in Jie after preliminary de-mediated in step S2
Tail end portion is rinsed to obtain aqueous middle coal and dilute Jie's liquid, and dilute Jie's liquid is passed through multilayer overflow and stands sink, and single layer stands water
After solid content reaches 1/2 in slot, the solid-liquid which stands in sink, which all pours into magnetic separator, to be sorted, and flows through multilayer
The liquid that overflow stands sink is passed through in centrifugal filter again, goes out to be also passed into magnetic separator by solid matter is green in centrifugal filter
It is inside sorted, enters by the magnetic material that magnetic separator sub-elects and close Jie's cylinder, and cash magnetic tail in the entrance of the backwater of nonmagnetic object
Cylinder；
S4, high-frequency screen screening: the backwater in entering in step S3 in cash magnetic tail cylinder enters high-frequency screen and is screened, in backwater
Middle coal flow out to obtain middle coal by underflow, liquid flows out to middle cash magnetic tail cylinder by overflow port.
Through the above technical solutions, by sculping screen by it is aqueous containing coal in being situated between carry out preliminary de-mediated and again after de-mediated will in
Coal is collected, and is on the one hand removed the medium in middle coal, is improved the cleannes and purity of coal, on the other hand, will be taken off in middle coal
The medium separated out is recycled to three-product cyclone, is utilized in the sorting of raw coal again, and the utilization rate of medium is improved；
Backwater after de-mediated finally after the high-frequency screen screening containing cyclone, middle coal particle is screened, coal in raising
Output capacity, and the liquid in cyclone at overflow is again introduced into middle cash magnetic tail cylinder and is utilized.It is embodied in entire technical process
The efficient and cleaning of coal production, and some liquid or medium that generate in the process are recycled, increase operation rate,
And the rate of recovery to dielectric film filter is improved, avoiding during magnetic separator magnetic separation dilute Jie's liquid reflux from closing influences to close Jie's cylinder in Jie's cylinder
Interior fluid density.
The present invention is further arranged to: it is aqueous to become oversize containing coal in being situated between in step S3 when sculping screen de-mediated, together
When, aqueous qualified medium is entered by sculping screen closes Jie's cylinder；
Oversize-is aqueous to be entered sculping screen tail portion and rinses to obtain the aqueous middle coal and dilute Jie's liquid containing coal in being situated between.
Through the above technical solutions, through the above steps, so that sculping screen separates middle coal with qualified medium, simultaneously
Qualified medium is recycled, the medium contained in middle coal also flows through sculping screen with water and obtains dilute Jie's liquid carries out magnetic separation again,
Medium after magnetic separation recycles, and improves the utilization rate of medium, while the medium in middle coal being detached from, in raising the cleannes of coal and
Purity.
The present invention is further arranged to: raw coal is except processing includes that raw coal is carried out magnetic screening in step S1.
Through the above technical solutions, the less raw coal of the available impurity of magnetic screening, improves the purity and cleannes of raw coal,
It is also beneficial to the highly-efficient processing in raw coal later period.
The present invention is further arranged to: the raw coal in step S1 after magnetic screening is big by straight line shaker progress different-grain diameter
The sorting of small coal.
Through the above technical solutions, raw coal is sorted by straight line shaker.
The present invention is further arranged to: the raw coal that partial size is greater than the set value in step S1 enters broken crusher machine, after being crushed
Obtained raw coal is mixed with the raw coal that former partial size is less than or equal to setting value.
Through the above technical solutions, entering three-product cyclone after the biggish raw coal of partial size is crushed, meets and enter tertiary industry
The demand of product swirler.
The present invention is further arranged to: mixed raw coal enters three-product cyclone in step S1, and raw coal separation is gone out
It is mixed with the cleaned coal of coal washing medium, be mixed with the middle coal of coal washing medium and is mixed with the spoil of coal washing medium, what is obtained is mixed with coal washing medium
Middle coal enter sculping screen de-mediated.
Through the above technical solutions, raw coal separation is gone out cleaned coal, middle coal and spoil, is then processed, be conducive to respectively
The convenience and machining accuracy of processing.
The present invention is further arranged to: the sculping screen in step S2 includes Banana Type linear vibrating screen, and the Banana Type is straight
Linearly coupled sieve includes segmental arc and the straightway connecting with segmental arc minimum point.
The present invention is further arranged to: aqueous close in the segmental arc and straightway of sculping screen containing coal in Jie in step S2
Segmental arc side carries out obtaining qualified medium.
Through the above technical solutions, by the segmental arc of sculping screen by under the qualified medium and water sieve in aqueous middle coal, so
The two is collected afterwards and is recycled, meanwhile, middle coal is trapped on sculping screen, is then vibrated to straightway and is carried out far from segmental arc side
It rinses.
The present invention is further arranged to: being rinsed far from segmental arc side containing coal in being situated between in straightway in step S3 is de-
Jie obtains dilute Jie's liquid.
Through the above technical solutions, the medium washes in aqueous middle coal are gone out through the above steps, coal is clear in raising
Cleanliness and purity.
The present invention is further arranged to: the high-frequency screen in step S4 includes high-frequency screen ontology and is arranged on high-frequency screen ontology
The cyclone at end, the backwater in step S3 initially enter cyclone, and the middle coal particle in backwater enters high frequency by underflow
It is sorted on sieve ontology；
Liquid in backwater is reused by cash magnetic tail cylinder in overflow port outflow entrance.
Through the above technical solutions, by the setting of cyclone so that part water in the backwater cash from overflow port entrance
The recycling of magnetic tail cylinder, middle coal particle therein enter the purpose of its screening of high-frequency screen vibration realizing.
In conclusion the invention has the following advantages:
1, iron and other impurities element in raw coal are removed by magnetic screening, improves the cleannes and purity of raw coal, and then in raising
The cleannes of product of coal；
2, preliminary de-mediated and de-mediated again are carried out containing coal in being situated between for aqueous by sculping screen, on the one hand removes the medium in middle coal
It removes, improves the cleannes and purity of coal, on the other hand, the medium detached in middle coal is recycled to three-product cyclone
Device is utilized again in the sorting of raw coal, improves the utilization rate of medium；
3, the backwater after de-mediated is handled by the high-frequency screen with cyclone, the middle coal particle in backwater is by overflowing
Head piece falls on high-frequency screen ontology and screens, and liquid flow to middle cash magnetic tail cylinder by overflow port and recycles, the output capacity of coal in raising.
Detailed description of the invention
Fig. 1 is the process flow chart of middle coal clean utilization production technology.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.The wherein identical appended drawing reference of identical components
It indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "upper", "lower", " bottom surface " and
" top surface " refers to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from geometric center of specific component
Direction.
Embodiment
A kind of middle coal clean utilization production technology, as shown in Figure 1, comprising the following steps:
S1, by raw coal carry out early period at the beginning of obtain it is aqueous containing be situated between in coal.
Concrete operations are as follows:
Raw coal is subjected to magnetic screening first, by raw coal iron tramp and other impurities be removed, then will be after magnetic screening
Raw coal enter straight line shaker, the different raw coal of partial size is sorted by straight line shaker, sorting herein regards subsequent machining technology
Depending on, in order to make raw coal partial size meet the requirement of three-product cyclone in the present embodiment, raw coal separation is that partial size is big by straight line shaker
In 50mm and it is less than or equal to 50mm, the raw coal by partial size greater than 50mm enters broken crusher machine, and broken raw coal is less than with original
Raw coal equal to 50mm is mixed；
Then mixed raw coal is entered into three-product cyclone, raw coal separation is gone out to be mixed with the aqueous cleaned coal of coal washing medium, is mixed
There is the aqueous middle coal of coal washing medium and is mixed with the aqueous spoil of coal washing medium；
Aqueous middle coal obtained in S2, step S1 containing coal washing medium carries out preliminary de-mediated, obtains qualified medium, concrete operations
It is as follows:
Aqueous middle coal obtained in step S1 containing coal washing medium enters sculping screen and carries out de-mediated, and sculping screen includes that Banana Type is straight
Linearly coupled sieve, Banana Type linear vibrating screen include segmental arc and the straightway that connect with segmental arc minimum point, aqueous containing coal in Jie
It falls in first and carries out preliminary screening on the segmental arc of sculping screen, at this point, middle coal is trapped on the compass screen surface of sculping screen as oversize,
Qualified medium and water in middle coal are entered by sculping screen closes Jie's cylinder, and the medium closed in Jie's cylinder is delivered to three-product cyclone, right
Qualified medium is recycled, while the medium washes in middle coal are fallen a part, the precision of coal in raising；
It is rinsed to obtain aqueous middle coal and dilute Jie's liquid containing coal sculping screen tail portion in being situated between after preliminary de-mediated in S3, step S2,
Dilute Jie's liquid is passed through multilayer overflow and stands sink, and after solid content reaches 1/2 in single layer standing sink, which is stood in sink
Solid-liquid all pour into magnetic separator and sorted, flow through multilayer overflow and stand the liquid of sink and be passed through in centrifugal filter again,
Go out to be also passed into magnetic separator and sort by solid matter is green in centrifugal filter, the magnetic material sub-elected by magnetic separator into
Enter to close Jie's cylinder, and the backwater of nonmagnetic object enter in cash magnetic tail cylinder；
Backwater in entering in S4, step S3 in cash magnetic tail cylinder enters high-frequency screen and is screened, and high-frequency screen includes high-frequency screen sheet
Body and the cyclone being arranged in above high-frequency screen ontology.Backwater in step S3 initially enters cyclone, in backwater in
Coal particle is entered on high-frequency screen ontology by underflow to be sorted, and the liquid in backwater passes through cash magnetic in overflow port outflow entrance
Tail pipe recycling.
Raw coal is carried out by preliminary working by magnetic screening first in the present embodiment, iron and other impurities are subjected to screening taking-up,
The cleannes and purity of raw coal are improved, then the raw coal separation by straight line shaker by partial size greater than 50mm, which comes out, carries out broken place
Reason enters three-product cyclone after then mixing with the former raw coal less than 50mm and is sorted to obtain cleaned coal, middle coal and spoil；It is logical
It crosses sculping screen to collect middle coal containing the preliminary de-mediated of coal progress in being situated between and again after de-mediated for aqueous, on the one hand by the medium in middle coal
It is removed, improves the cleannes and purity of coal, on the other hand, the medium detached in middle coal is recycled to tertiary industry
Product swirler is utilized again in the sorting of raw coal, improves the utilization rate of medium；Backwater after de-mediated is finally by containing rotation
After the high-frequency screen screening for flowing device, middle coal particle is screened, the output capacity of coal in raising, and the liquid in cyclone at overflow
Body is again introduced into middle cash magnetic tail cylinder and is utilized.The efficient and cleaning of coal production, and process are embodied in entire technical process
The some liquid or medium of middle generation are recycled, and are increased operation rate.
And being rinsed containing coal in being situated between after preliminary de-mediated, obtain aqueous middle coal and dilute Jie's liquid, dilute Jie's liquid
Body is passed through in multilayer overflow standing sink and is filtered, and the structure that multilayer overflow stands sink is the water from top to bottom set gradually
Slot, and upper layer sink top is provided with overflow pipe connection lower layer's sink, the standing water purification system formed by multiple sinks, multilayer is overflow
Stream, which stands sink, which from top to bottom carries out overflow, expires, and coutroi velocity during overflow reduces water impact, in the mistake of water flowing
Can be realized the effect that staticly settles of other positions in journey, and the water of the sink discharge of the bottom be passed through in centrifugal filter again into
The more careful filtering of row, therefore it is effectively reduced by the primary filtration of multilayer overflow standing sink the mistake of centrifugal filter
Filtering pressure power promotes the filter efficiency and effect of centrifugal filter, and the water after centrifugal filtration can continue cycling through middle cash magnetic tail cylinder
Recycling, or be passed directly into sewage disposal system and carry out harmless treatment.
And sink stands directly to pour into the solid-liquid in sink in magnetic separator together after more solid and sort, and from
The solid filtered out in heart filter, which also pours into magnetic separator, to be sorted, to be effectively reduced into the liquid in magnetic separator
The scale of construction promotes the effect of magnetic separation to be effectively reduced the interference of hydraulic shock, and also avoids liquid after blocking in magnetic separator
By recovery tube, to closing, Jie's cylinder is interior to influence internal liquid density at once.
Solid content when due to magnetic separation is more, Gu it is intracorporal agglomerating convenient for adsorbing containing magnetisable material, consequently facilitating carrying out
Sub-sieve comes out, and promotes sub-sieve precision, promotes recovering effect.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of middle coal clean utilization production technology, it is characterized in that: the following steps are included:
S1, raw coal preliminary working: raw coal progress preliminary working is obtained aqueous containing coal in being situated between；
S2, it is aqueous containing be situated between in the preliminary de-mediated of coal, obtain qualified medium: obtained in step S1 it is aqueous containing be situated between in coal enter sculping screen
De-mediated is obtained containing coal and aqueous qualified medium in being situated between, and aqueous qualified medium, which is recycled to, closes Jie's cylinder, and the medium closed in Jie's cylinder is delivered to
Three-product cyclone；
S3, it is rinsed containing coal in being situated between in sculping screen tail portion, obtains dilute Jie's liquid: containing coal de-mediated in Jie after preliminary de-mediated in step S2
Tail end portion is rinsed to obtain aqueous middle coal and dilute Jie's liquid, and dilute Jie's liquid is passed through multilayer overflow and stands sink, and single layer stands water
After solid content reaches 1/2 in slot, the solid-liquid which stands in sink, which all pours into magnetic separator, to be sorted, and flows through multilayer
The liquid that overflow stands sink is passed through in centrifugal filter again, goes out to be also passed into magnetic separator by solid matter is green in centrifugal filter
It is inside sorted, enters by the magnetic material that magnetic separator sub-elects and close Jie's cylinder, and cash magnetic tail in the entrance of the backwater of nonmagnetic object
Cylinder；
S4, high-frequency screen screening: the backwater in entering in step S3 in cash magnetic tail cylinder enters high-frequency screen and is screened, in backwater
Middle coal flow out to obtain middle coal by underflow, liquid flows out to middle cash magnetic tail cylinder by overflow port.
2. a kind of middle coal clean utilization production technology according to claim 1, it is characterized in that: sculping screen de-mediated in step S3
When, it is aqueous to become oversize containing coal in being situated between, meanwhile, aqueous qualified medium is entered by sculping screen closes Jie's cylinder；
Oversize-is aqueous to be entered sculping screen tail portion and rinses to obtain the aqueous middle coal and dilute Jie's liquid containing coal in being situated between.
3. a kind of middle coal clean utilization production technology according to claim 1, it is characterized in that: raw coal is except processing in step S1
Including raw coal is carried out magnetic screening.
4. a kind of middle coal clean utilization production technology according to claim 3, it is characterized in that: passing through magnetic screening in step S1
Raw coal afterwards carries out the sorting of the coal of different-grain diameter size by straight line shaker.
5. a kind of middle coal clean utilization production technology according to claim 4, it is characterized in that: partial size is greater than and sets in step S1
The raw coal of definite value enters broken crusher machine, and the raw coal obtained after broken is mixed with the raw coal that former partial size is less than or equal to setting value.
6. a kind of middle coal clean utilization production technology according to claim 5, it is characterized in that: mixed original in step S1
Coal enters three-product cyclone, goes out to be mixed with the cleaned coal of coal washing medium for raw coal separation, is mixed with the middle coal of coal washing medium and is mixed with and wash
The spoil of coal medium, the obtained middle coal for being mixed with coal washing medium enter sculping screen de-mediated.
7. a kind of middle coal clean utilization production technology according to claim 1, it is characterized in that: the sculping screen packet in step S2
Include Banana Type linear vibrating screen, the Banana Type linear vibrating screen includes segmental arc and the straight line that connect with segmental arc minimum point
Section.
8. a kind of middle coal clean utilization production technology according to claim 7, it is characterized in that: aqueous containing Jie in step S2
Middle coal carries out obtaining qualified medium close to segmental arc side in the segmental arc and straightway of sculping screen.
9. a kind of middle coal clean utilization production technology according to claim 8, it is characterized in that: coal in being situated between containing in step S3
De-mediated, which is rinsed, far from segmental arc side in straightway obtains dilute Jie's liquid.
10. a kind of middle coal clean utilization production technology according to claim 1, it is characterized in that: the high-frequency screen in step S4
Including high-frequency screen ontology and the cyclone that high-frequency screen ontology upper end is arranged in, the backwater in step S3 initially enters cyclone,
Middle coal particle in backwater is entered on high-frequency screen ontology by underflow to be sorted；
Liquid in backwater is reused by cash magnetic tail cylinder in overflow port outflow entrance.
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