CN101554612A - Method for recovering cleaned coal from coal slurry - Google Patents
Method for recovering cleaned coal from coal slurry Download PDFInfo
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- CN101554612A CN101554612A CNA2009100744218A CN200910074421A CN101554612A CN 101554612 A CN101554612 A CN 101554612A CN A2009100744218 A CNA2009100744218 A CN A2009100744218A CN 200910074421 A CN200910074421 A CN 200910074421A CN 101554612 A CN101554612 A CN 101554612A
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Abstract
The invention relates to a method for recovering cleaned coal from coal slurry, belonging to the method for recovering cleaned coal intentionally from coal slurry. The invention mainly solves the technical difficulty that in the existing coal washing technology, the tailings coal slurry contains comparatively a great amount of cleaned coal and coal resources are wasted. To solve the technical problems, the invention adopts the technical proposal: the method for recovering cleaned coal from the coal slurry includes the following steps: 1) a high frequency linear shaking screen removes slurry through screen separation of fine-structure mesh, 2) materials under the screen are used for recovering the cleaned coal by the short series connection cycle of a multistage floatation machine, 3) the materials above the screen are used for recovering the cleaned coal by adopting the series connection process of a multistage whirlcone. The method has the advantages of high recovery efficiency of cleaned coal, saving coal resources and the like.
Description
Technical field
The present invention relates to a kind of method that reclaims cleaned coal from coal slime, it belongs to a kind of at the method that reclaims cleaned coal from coal slime.
Background technology
At present, China coal washing enterprise generally adopts the jigging unit or the unit that heavily is situated between carries out coal separation, and its mine tailing (coal slime) generally adopts flotation device or flotation column to reclaim the tail cleaned coal.Because the technology of above-mentioned recovery tail cleaned coal is unreasonable, make to contain cleaned coal than higher in this type of technology institute last person ore deposit (coal slime), caused the significant wastage of coal resources, had a strong impact on the coal washing economic benefit of enterprises.
Summary of the invention
The objective of the invention is to solve the mine tailing coal slime that has the coal cleaning process existence now and contain the technological difficulties that cleaned coal is higher and waste coal resources, and a kind of method that reclaims cleaned coal from coal slime that reclaims cleaned coal rate height and saving coal resources is provided.
The present invention solves the problems of the technologies described above the technical scheme that adopts to be: a kind of method that reclaims cleaned coal from coal slime, it comprises the following steps:
1) high frequency straight line reciprocating sieve fine-structure mesh screening desliming, 2) undersize material reclaims cleaned coal, 3 by the short circulation of multistage flotation device series connection) the oversize material adopts multistage cyclone serial flow to reclaim cleaned coal.
Described high frequency straight line reciprocating sieve fine-structure mesh screening desliming step is: black water is adjusted to sends into high frequency straight line reciprocating sieve after the 30% following concentration and sieve, realize that desliming and coal slime cut crude separation; The order number of high frequency straight line vibrative sieve screen is 200～300 orders.
Described undersize material reclaims the cleaned coal step by the short circulation of multistage flotation device series connection: high frequency linear reciprocating sieve undersize material water is pumped into preprocessor carries out the medicine mix and blend, described medicine foaming agent and collecting agent add by weight 1: 2～1: 8 ratio; Flow into then 1
#Flotation device, 1
#The material that scraping plate of flotation machine scrapes enters to extract behind the filter press to discharge and obtains cleaned coal, the ash content of cleaned coal≤13%; 1
#The overflow mine tailing of flotation device flows into 2
#In the flotation device, 2
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 2
#The overflow mine tailing of flotation device flows into 3
#In the flotation device, 3
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 3
#The overflow tailing stream entry Square-type overflow launder of flotation device, the material that horizontal square overflow launder top overflows enters the mine tailing circulatory pool and lacks circulation, the tailing water that flow out its bottom enters concentration basin and concentrates, the underflow water of concentration basin enters the filter press dehydration and discharges the ash content in institute last person ore deposit＞70%.
Described on-the-sieve material adopts Multi-stage spiral device serial flow to reclaim the cleaned coal step and refers to can adopt 3～9 grades of cyclone serial flows to reclaim cleaned coal according to the coal slime granularity.
Described on-the-sieve material adopts 6 grades of cyclone serial flows to reclaim the cleaned coal step: high frequency linear reciprocating sieve on-the-sieve material is sent into 1 by conveyer belt
#In the medium bucket, and its concentration adjusted to below 30%, then by 1
#Medium pump is with 1
#Material sends into 1 in the medium bucket
#Cyclone, 1
#Cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 1
#The mine tailing that the outlet of cyclone spoil is discharged returns 1 as the sand medium
#The medium bucket, 1
#The material that coal export is discharged in the cyclone enters next stage medium bucket (2
#) in carry out cleaned coal and reclaim again; 2
#Medium pump is with 2
#Material sends into 2 in the medium bucket
#Cyclone, 2
#Cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 2
#The mine tailing that the outlet of cyclone spoil is discharged returns 2 as the sand medium
#The medium bucket, 2
#The material that coal export is discharged in the cyclone enters next stage medium bucket (3
#) in carry out cleaned coal and reclaim again; 3
#Medium pump is with 3
#Material sends into 3 in the medium bucket
#Cyclone, 3
#Cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 3
#The mine tailing that the outlet of cyclone spoil is discharged returns 3 as the sand medium
#The medium bucket, 3
#The material that coal export is discharged in the cyclone enters next stage medium bucket (4
#) in carry out cleaned coal and reclaim again; 4
#Medium pump is with 4
#Material sends into 4 in the medium bucket
#Cyclone, 4
#Cyclone overfall overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 4
#The material that the cyclone outlet at bottom is discharged enters next stage medium bucket (5
#) in carry out cleaned coal and reclaim again; 5
#Medium pump is with 5
#Material sends into 5 in the medium bucket
#Cyclone, 5
#Cyclone overfall overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 5
#The material that the cyclone outlet at bottom is discharged enters next stage medium bucket (6
#) in carry out cleaned coal and reclaim again; 6
#Medium pump is with 6
#Material sends into 6 in the medium bucket
#Cyclone, 6
#Cyclone overfall overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 6
#The mine tailing that the cyclone outlet at bottom is discharged enters the high frequency linear reciprocating sieve again and dewaters, and the current of deviating from return the mine tailing circulatory pool, and the namely middle coal of oversize, spoil and sand are discharged by belt conveyer.
Described cyclone is three-product cyclone device and two product cyclones.
Because the present invention has adopted technique scheme, improved the efficient that from the mine tailing coal slime, reclaims cleaned coal.Through test, the present invention can reclaim 27.8 tons of the cleaned coal of ash content≤10% from ash content is 48% 100.35 tons coal slime, reclaims 10.25 tons of the floating cleaned coal of ash content≤13%.Therefore, compare with background technology, the present invention has the advantages such as the cleaned coal of recovery rate height and saving coal resources.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment.
Embodiment 1
A kind of method that reclaims cleaned coal from coal slime in the present embodiment, it comprises the following steps:
1) high frequency linear reciprocating sieve fine-structure mesh screening desliming, 2) undersize material reclaims cleaned coal, 3 by the short circulation of multistage flotation device series connection) on-the-sieve material adopts 6 grades of cyclone serial flows to reclaim cleaned coal.
Above-mentioned high frequency straight line reciprocating sieve fine-structure mesh screening desliming step is: black water is adjusted to sends into high frequency straight line reciprocating sieve after the 30% following concentration and sieve, realize that desliming and coal slime cut crude separation; The order number of high frequency straight line vibrative sieve screen is 200 orders.
Above-mentioned undersize material reclaims the cleaned coal step by the short circulation of multistage flotation device series connection: high frequency linear reciprocating sieve undersize material water is pumped into preprocessor carries out the medicine mix and blend, described medicine foaming agent and collecting agent add by weight 1: 5 ratio; Flow into then 1
#Flotation device, 1
#The material that scraping plate of flotation machine scrapes enters to extract behind the filter press to discharge and obtains cleaned coal, the ash content of cleaned coal≤13%; 1
#The overflow mine tailing of flotation device flows into 2
#In the flotation device, 2
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 2
#The overflow mine tailing of flotation device flows into 3
#In the flotation device, 3
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 3
#The overflow tailing stream entry Square-type overflow launder of flotation device, the material that horizontal square overflow launder top overflows enters the mine tailing circulatory pool and lacks circulation, the tailing water that flow out its bottom enters concentration basin and concentrates, the underflow water of concentration basin enters the filter press dehydration and discharges the ash content in institute last person ore deposit＞70%.
Above-mentioned on-the-sieve material adopts 6 grades of cyclone serial flows to reclaim the cleaned coal step: high frequency linear reciprocating sieve on-the-sieve material is sent into 1 by conveyer belt
#In the medium bucket, and its concentration adjusted to below 30%, then by 1
#Medium pump is with 1
#Material sends into 1 in the medium bucket
#In the three-product cyclone, 1
#Three-product cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 1
#The mine tailing that the outlet of three-product cyclone spoil is discharged returns 1 as the sand medium
#The medium bucket, 1
#The material that coal export is discharged in the three-product cyclone enters next stage medium bucket (2
#) in carry out cleaned coal and reclaim again; 2
#Medium pump is with 2
#Material sends into 2 in the medium bucket
#In the three-product cyclone, 2
#Three-product cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 2
#The mine tailing that the outlet of three-product cyclone spoil is discharged returns 2 as the sand medium
#The medium bucket, 2
#The material that coal export is discharged in the three-product cyclone enters next stage medium bucket (3
#) in carry out cleaned coal and reclaim again; 3
#Medium pump is with 3
#Material sends into 3 in the medium bucket
#In the three-product cyclone, 3
#Three-product cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 3
#The mine tailing that the outlet of three-product cyclone spoil is discharged returns 3 as the sand medium
#The medium bucket, 3
#The material that coal export is discharged in the three-product cyclone enters next stage medium bucket (4
#) in carry out cleaned coal and reclaim again; 4
#Medium pump is with 4
#Material sends into 4 in the medium bucket
#In the two product cyclones, 4
#Two product cyclone overfall overflow waters enter the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 4
#The material that two product cyclone outlet at bottoms are discharged enters next stage medium bucket (5
#) in carry out cleaned coal and reclaim again; 5
#Medium pump is with 5
#Material sends into 5 in the medium bucket
#In the cyclone, 5
#Two product cyclone overfall overflow waters enter the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 5
#The material that two product cyclone outlet at bottoms are discharged enters next stage medium bucket (6
#) in carry out cleaned coal and reclaim again; 6
#Medium pump is with 6
#Material sends into 6 in the medium bucket
#In the two product cyclones, 6
#Two product cyclone overfall overflow waters enter the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 6
#The mine tailing that two product cyclone outlet at bottoms are discharged enters the high frequency linear reciprocating sieve again and dewaters, and the current of deviating from return the mine tailing circulatory pool, and the namely middle coal of oversize, spoil and sand are discharged by belt conveyer.
Embodiment 2
A kind of method that reclaims cleaned coal from coal slime in the present embodiment, it comprises the following steps:
1) high frequency linear reciprocating sieve fine-structure mesh screening desliming, 2) undersize material reclaims cleaned coal, 3 by the short circulating series of flotation device) on-the-sieve material adopts 6 grades of cyclone serial flows to reclaim cleaned coal.
Above-mentioned high frequency straight line reciprocating sieve fine-structure mesh screening desliming step is: black water is adjusted to sends into high frequency straight line reciprocating sieve after the 30% following concentration and sieve, realize that desliming and coal slime cut crude separation; The order number of high frequency straight line vibrative sieve screen is 260 orders.
Above-mentioned undersize material reclaims the cleaned coal step by the short circulation of multistage flotation device series connection: high frequency linear reciprocating sieve undersize material water is pumped into preprocessor carries out the medicine mix and blend, described medicine foaming agent and collecting agent add by weight 1: 2 ratio; Flow into then 1
#Flotation device, 1
#The material that scraping plate of flotation machine scrapes enters to extract behind the filter press to discharge and obtains cleaned coal, the ash content of cleaned coal≤13%; 1
#The overflow mine tailing of flotation device flows into 2
#In the flotation device, 2
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 2
#The overflow mine tailing of flotation device flows into 3
#In the flotation device, 3
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 3
#The overflow tailing stream entry Square-type overflow launder of flotation device, the material that horizontal square overflow launder top overflows enters the mine tailing circulatory pool and lacks circulation, the tailing water that flow out its bottom enters concentration basin and concentrates, the underflow water of concentration basin enters the filter press dehydration and discharges the ash content in institute last person ore deposit＞70%.
Identical among all the other steps and the embodiment 1.
Embodiment 3
A kind of method that reclaims cleaned coal from coal slime in the present embodiment, it comprises the following steps:
1) high frequency linear reciprocating sieve fine-structure mesh screening desliming, 2) undersize material reclaims cleaned coal, 3 by the short circulating series of flotation device) on-the-sieve material adopts 6 grades of cyclone serial flows to reclaim cleaned coal.
Above-mentioned high frequency straight line reciprocating sieve fine-structure mesh screening desliming step is: black water is adjusted to sends into high frequency straight line reciprocating sieve after the 30% following concentration and sieve, realize that desliming and coal slime cut crude separation; The order number of high frequency straight line vibrative sieve screen is 300 orders.
Above-mentioned undersize material reclaims the cleaned coal step by the short circulation of multistage flotation device series connection: high frequency straight line reciprocating sieve undersize material water is pumped into preprocessor carries out medicine and mix and stir, described medicine foaming agent and collecting agent were by weight 1: 8 ratio adding; Flow into 1 then
#Flotation device, 1
#The material that the flotation device scraper plate scrapes enters to extract behind the filter press to discharge and obtains cleaned coal, the ash content of cleaned coal≤13%1
#The overflow mine tailing of flotation device flows into 2
#In the flotation device, 2
#The material that the flotation device scraper plate scrapes enters the mine tailing circulatory pool and lacks circulation, 2
#The overflow mine tailing of flotation device flows into 3
#In the flotation device, 3
#The material that the flotation device scraper plate scrapes enters the mine tailing circulatory pool and lacks circulation, 3
#The overflow tailing stream entry square type overflow launder of flotation device, the material that horizontal square overflow launder top overflows enters the mine tailing circulatory pool and lacks circulation, the tailing water that flow out its bottom enters concentration basin and concentrates, the underflow water of concentration basin enters the filter press dehydration and discharges ash content＞70% in institute last person ore deposit.
Identical among all the other steps and the embodiment 1.
Embodiment 4
A kind of method that reclaims cleaned coal from coal slime in the present embodiment, it comprises the following steps:
1) high frequency linear reciprocating sieve fine-structure mesh screening desliming, 2) undersize material reclaims cleaned coal, 3 by the short circulating series of flotation device) on-the-sieve material adopts 5 grades of cyclone serial flows to reclaim cleaned coal.
Above-mentioned high frequency straight line reciprocating sieve fine-structure mesh screening desliming step is: black water is adjusted to sends into high frequency straight line reciprocating sieve after the 30% following concentration and sieve, realize that desliming and coal slime cut crude separation; The order number of high frequency straight line vibrative sieve screen is 240 orders.
Above-mentioned undersize material reclaims the cleaned coal step by the short circulation of multistage flotation device series connection: high frequency linear reciprocating sieve undersize material water is pumped into preprocessor carries out the medicine mix and blend, described medicine foaming agent and collecting agent add by weight 1: 4 ratio; Flow into then 1
#Flotation device, 1
#The material that scraping plate of flotation machine scrapes enters to extract behind the filter press to discharge and obtains cleaned coal, the ash content of cleaned coal≤13%; 1
#The overflow mine tailing of flotation device flows into 2
#In the flotation device, 2
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 2
#The overflow mine tailing of flotation device flows into 3
#In the flotation device, 3
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 3
#The overflow tailing stream entry Square-type overflow launder of flotation device, the material that horizontal square overflow launder top overflows enters the mine tailing circulatory pool and lacks circulation, the tailing water that flow out its bottom enters concentration basin and concentrates, the underflow water of concentration basin enters the filter press dehydration and discharges the ash content in institute last person ore deposit＞70%.
Above-mentioned on-the-sieve material adopts 5 grades of cyclone serial flows to reclaim the cleaned coal step: high frequency linear reciprocating sieve on-the-sieve material is sent into 1 by conveyer belt
#In the medium bucket, and its concentration adjusted to below 30%, then by 1
#Medium pump is with 1
#Material sends into 1 in the medium bucket
#In the three-product cyclone, 1
#Three-product cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 1
#The mine tailing that the outlet of three-product cyclone spoil is discharged returns 1 as the sand medium
#The medium bucket, 1
#The material that coal export is discharged in the three-product cyclone enters next stage medium bucket (2
#) in carry out cleaned coal and reclaim again; 2
#Medium pump is with 2
#Material sends into 2 in the medium bucket
#In the three-product cyclone, 2
#Three-product cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 2
#The mine tailing that the outlet of three-product cyclone spoil is discharged returns 2 as the sand medium
#The medium bucket, 2
#The material that coal export is discharged in the three-product cyclone enters next stage medium bucket (3
#) in carry out cleaned coal and reclaim again; 3
#Medium pump is with 3
#Material sends into 3 in the medium bucket
#In the three-product cyclone, 3
#Three-product cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 3
#The mine tailing that the outlet of three-product cyclone spoil is discharged returns 3 as the sand medium
#The medium bucket, 3
#The material that coal export is discharged in the three-product cyclone enters next stage medium bucket (4
#) in carry out cleaned coal and reclaim again; 4
#Medium pump is with 4
#Material sends into 4 in the medium bucket
#In the two product cyclones, 4
#Two product cyclone overfall overflow waters enter the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 4
#The material that two product cyclone outlet at bottoms are discharged enters next stage medium bucket (5
#) in carry out cleaned coal and reclaim again; 5
#Medium pump is with 5
#Material sends into 5 in the medium bucket
#In the cyclone, 5
#Two product cyclone overfall overflow waters enter the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 5
#The mine tailing that two product cyclone outlet at bottoms are discharged enters the high frequency linear reciprocating sieve again and dewaters, and the current of deviating from return the mine tailing circulatory pool, and the namely middle coal of oversize, spoil and sand are discharged by belt conveyer.
On-the-sieve material in above-described embodiment also can adopt 3～9 grades of cyclone serial flows to reclaim cleaned coal according to the coal slime granularity.
Claims (6)
1, a kind of method that reclaims cleaned coal from coal slime is characterized in that: comprise the following steps:
1) high frequency straight line reciprocating sieve fine-structure mesh screening desliming, 2) undersize material reclaims cleaned coal, 3 by the short circulation of multistage flotation device series connection) the oversize material adopts multistage cyclone serial flow to reclaim cleaned coal.
2, a kind of method that from coal slime, reclaims cleaned coal according to claim 1, it is characterized in that: described high frequency straight line reciprocating sieve fine-structure mesh screening desliming step is: black water is adjusted to sends into high frequency straight line reciprocating sieve after the 30% following concentration and sieve, realize that desliming and coal slime cut crude separation; The order number of high frequency straight line vibrative sieve screen is 200～300 orders.
3, a kind of method that from coal slime, reclaims cleaned coal according to claim 1, it is characterized in that: described undersize material reclaims the cleaned coal step by the short circulation of multistage flotation device series connection and is: high frequency linear reciprocating sieve undersize material water is pumped into preprocessor carries out the medicine mix and blend, described medicine foaming agent and collecting agent add by weight 1: 2～1: 8 ratio; Flow into then 1
#Flotation device, 1
#The material that scraping plate of flotation machine scrapes enters to extract behind the filter press to discharge and obtains cleaned coal, the ash content of cleaned coal≤13%; 1
#The overflow mine tailing of flotation device flows into 2
#In the flotation device, 2
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 2
#The overflow mine tailing of flotation device flows into 3
#In the flotation device, 3
#The material that scraping plate of flotation machine scrapes enters the mine tailing circulatory pool and lacks circulation, 3
#The overflow tailing stream entry Square-type overflow launder of flotation device, the material that horizontal square overflow launder top overflows enters the mine tailing circulatory pool and lacks circulation, the tailing water that flow out its bottom enters concentration basin and concentrates, the underflow water of concentration basin enters the filter press dehydration and discharges the ash content in institute last person ore deposit＞70%.
4, a kind of method that reclaims cleaned coal from coal slime according to claim 1 is characterized in that: described oversize material adopts multistage cyclone serial flow recovery cleaned coal step to be meant according to the coal slime granularity can adopt 3～9 grades of cyclone serial flows recovery cleaned coal.
5, according to claim 1 or 4 described a kind of methods that reclaim cleaned coal from coal slime, it is characterized in that: described on-the-sieve material adopts 6 grades of cyclone serial flows recovery cleaned coal steps to be: high frequency linear reciprocating sieve on-the-sieve material is sent into 1 by conveyer belt
#In the medium bucket, and its concentration adjusted to below 30%, then by 1
#Medium pump is with 1
#Material sends into 1 in the medium bucket
#Cyclone, 1
#Cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 1
#The mine tailing that the outlet of cyclone spoil is discharged returns 1 as the sand medium
#The medium bucket, 1
#The material that coal export is discharged in the cyclone enters next stage medium bucket (2
#) in carry out cleaned coal and reclaim again; 2
#Medium pump is with 2
#Material sends into 2 in the medium bucket
#Cyclone, 2
#Cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 2
#The mine tailing that the outlet of cyclone spoil is discharged returns 2 as the sand medium
#The medium bucket, 2
#The material that coal export is discharged in the cyclone enters next stage medium bucket (3
#) in carry out cleaned coal and reclaim again; 3
#Medium pump is with 3
#Material sends into 3 in the medium bucket
#Cyclone, 3
#Cyclone cleaned coal outlet overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 3
#The mine tailing that the outlet of cyclone spoil is discharged returns 3 as the sand medium
#The medium bucket, 3
#The material that coal export is discharged in the cyclone enters next stage medium bucket (4
#) in carry out cleaned coal and reclaim again; 4
#Medium pump is with 4
#Material sends into 4 in the medium bucket
#Cyclone, 4
#Cyclone overfall overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 4
#The material that the cyclone outlet at bottom is discharged enters next stage medium bucket (5
#) in carry out cleaned coal and reclaim again; 5
#Medium pump is with 5
#Material sends into 5 in the medium bucket
#Cyclone, 5
#Cyclone overfall overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 5
#The material that the cyclone outlet at bottom is discharged enters next stage medium bucket (6
#) in carry out cleaned coal and reclaim again; 6
#Medium pump is with 6
#Material sends into 6 in the medium bucket
#Cyclone, 6
#Cyclone overfall overflow water enters the dehydration of high frequency linear reciprocating sieve, gained cleans ash≤10%, 6
#The mine tailing that the cyclone outlet at bottom is discharged enters the high frequency linear reciprocating sieve again and dewaters, and the current of deviating from return the mine tailing circulatory pool, and the namely middle coal of oversize, spoil and sand are discharged by belt conveyer.
6, a kind of method that reclaims cleaned coal from coal slime according to claim 5, it is characterized in that: described cyclone is three-product cyclone device and two product cyclones.
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| CNA2009100744218A CN101554612A (en) | 2009-05-18 | 2009-05-18 | Method for recovering cleaned coal from coal slurry |
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|---|---|---|---|
| CNA2009100744218A CN101554612A (en) | 2009-05-18 | 2009-05-18 | Method for recovering cleaned coal from coal slurry |
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| CN101757982A (en) * | 2010-03-09 | 2010-06-30 | 中国矿业大学 | Coal slime floating process |
| CN102179290A (en) * | 2010-12-31 | 2011-09-14 | 杨灵奎 | Method for recycling clean coal from high-ash coal slurry tailings |
| CN102205265A (en) * | 2010-12-31 | 2011-10-05 | 杨灵奎 | Method for reclaiming clean coal from slurry of coal with poor flotability |
| CN101716552B (en) * | 2009-12-28 | 2012-05-23 | 河南理工大学 | Raw coal washing process capable of realizing non-polar ash conditioning |
| CN103212479A (en) * | 2013-05-02 | 2013-07-24 | 杨高灵 | Tail coal recycling utilization |
| CN103230829A (en) * | 2013-05-02 | 2013-08-07 | 唐山国华科技国际工程有限公司 | Method for guaranteeing high separation precision of coal slime heavy medium hydrocyclone |
| CN103372495A (en) * | 2012-04-13 | 2013-10-30 | 金易通科技(北京)股份有限公司 | Coarse slime separating system and method |
| CN105126994A (en) * | 2014-03-10 | 2015-12-09 | 衢州市易凡设计有限公司 | Washing equipment for high-ash, high-mud and high-gangue coal |
| CN105964392A (en) * | 2016-06-20 | 2016-09-28 | 中国神华能源股份有限公司 | Coal dressing and desliming system |
| CN107020200A (en) * | 2017-02-15 | 2017-08-08 | 芬雷选煤工程技术(北京)有限公司 | Floatation clean coal mixing with technique in wholegrain level cleaned coal |
| CN108421634A (en) * | 2018-02-09 | 2018-08-21 | 广东长亨石业有限公司 | A kind of method of mud sand-water separating recycling |
| CN112225431A (en) * | 2020-10-28 | 2021-01-15 | 昭仕（厦门）新材料有限公司 | Coal slime treatment method and coal slime treatment composite preparation |
| WO2021253304A1 (en) * | 2020-06-18 | 2021-12-23 | Zhongyang Mingyuan Coal Preparation Plant | Clean coal production system and method |
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2009
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