CN105154165B - A kind of method for reducing ash content in ash coal mud - Google Patents
A kind of method for reducing ash content in ash coal mud Download PDFInfo
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- CN105154165B CN105154165B CN201510406739.7A CN201510406739A CN105154165B CN 105154165 B CN105154165 B CN 105154165B CN 201510406739 A CN201510406739 A CN 201510406739A CN 105154165 B CN105154165 B CN 105154165B
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Abstract
A kind of method for reducing ash content in ash coal mud, the method step includes：Ash coal mud is shakeout in coal slime pond, thickness is shakeout for 5~12cm, to being sprinkled water after coal slime hoe pine after trench digging；Vegetable seeds is carried out to soak 12~15h with clear water after bacterium detoxification treatment, and vernalization 1~2 day；The seed of vernalization is sowed, 30~50cm of sowing line width, once, cultivation temperature is 25~30 DEG C for watering in every 2~3 days, after germinateing, continuing to cultivate 1~2 month turns into sprout, and regular sample examination is carried out to ash coal mud during culture；Above-mentioned sprout is all pulled out, sprout root system is sifted out and maintenance one day of sprinkling water；Coal slime in coal slime pond is cleared out, the coal slime pond for emptying is for the treatment of next batch coal slime.Simple to operate, low cost of the invention, substantially, while will not be polluted to environment in processing procedure, the coal slime produced can directly apply to industrial circle for coal slime ash content and sulfur content reducing effect after treatment.
Description
Technical field
The present invention relates to Coal dressing technical field, and in particular to a kind of method of ash content in reduction ash coal mud.
Background technology
Coal slime refers to the semi-solid thing of the aqueous formation of coal dust, is a kind of product in coal production process, according to kind
The difference of different and formation mechenism, can be divided into following three major types by coal slime：
(1) floating tail-coal of Oversized Coking Coal Cleaning Plant：The property of this kind of coal slime is similar with washing spoil or middle coal, its ash content compared with
Height, caloric value is relatively low；
(2) coal slime of coal-water mixture output：Such as output after washing coal slime, the coal Hydraulic transportation of thermal coal coal washery
Coal slime, it is all better than raw coal quality that this coal slime has, and quantity is usually mixed in readymade coal when few；
(3) coal slime and hillock of mine drainage entrainment are watered the coal slime for washing away：These coal slimes belong to colliery
Dirty miscellaneous coal slime, is characterized in that quantity is few, and quality is unstable, but general all better than floating tail-coal quality.
Coal slime is segmented into three classes by the height of ash content and calorific value：Low ash coal mud, middle ash content coal slime and ash coal mud,
The floating tail-coal of Oversized Coking Coal Cleaning Plant typically belongs to middle ash coal mud, and its content of ashes constitutes about 35%~40%, its calorific value
13.0~14.0MJ/kg is just typically reached, so that it can not be effectively applied to industrial circle.With the energy resources phase of China
Situation to shortage is increasingly serious, and seeking a kind of method for being effectively reduced ash content in ash coal mud has greatly meaning.
The content of the invention
It is an object of the invention to provide a kind of method for reducing ash content in ash coal mud, the method can be largely
Reduce ash content and reduce production cost, and environment will not be polluted, the coal slime produced can directly apply to industry
Field.
To achieve the above object, the invention provides a kind of method for reducing ash content in ash coal mud, step is as follows：
(1) ash coal mud is shakeout in coal slime pond, it is described shakeout after ash coal mud thickness for 5~12cm,
After trench digging, will be sprinkled water after above-mentioned coal slime hoe pine；
(2) vegetable seeds is carried out into bacterium detoxification treatment, is then soaked 12~15 hours with clear water, and vernalization 1~2 day；
(3) seed by above-mentioned vernalization is sowed, and sows the 30~50cm of line width of row, is sprinkled water once within every 2~3 days,
Cultivation temperature is 25 DEG C~30 DEG C, after germinateing, is cultivated for turning into sprout in 1~2 month, to ash coal mud during culture
Carry out regular sample examination；
(4) above-mentioned sprout is all pulled out, sifts out sprout root system, and maintenance one day of sprinkling water；
(5) coal slime in coal slime pond is cleared out, the coal slime that the coal slime pond for emptying is used for next batch is processed.
Preferably, cultivation temperature is 28 DEG C in the step (3).
Preferably, the seed in the step (2) is lawn seed or legume-seeds.
The present invention reduces the ash content in coal slime using planting plants, and the ash content in coal slime is from mineral matter, and mineral
Matter is plant one of necessary condition in growth course, therefore, the mineral matter in absorbing coal slime in the growth course of plant
Composition, so as to reduce the content of ashes in coal slime, effectively increases the caloric value of coal slime to meet coal slime directly as power
The requirement of fuel；Meanwhile, in growth period, the biochemical reaction of root system can absorb the part element sulphur in coal slime to plant, so as to drop
The sulfur content of low coal slime, beneficial to environmental protection.Simple to operate, low cost of the invention, coal slime ash content and sulfur content the reduction effect after treatment
Fruit substantially, while will not be polluted to environment in processing procedure, is widely portable in ash coal ore deposit, is produced
Coal slime can directly apply to industrial circle.
Specific embodiment
The present invention is described in further detail with reference to embodiments.
Embodiment one：
(1) sample for being gathered three equivalent from a pile ash coal mud by arbitrary sampling method is chemically examined, and is passed through
Three groups of analysis datas obtain average value, i.e. ash content 37.63%, caloric value 13.63MJ/kg；
(2) ash coal mud is shakeout in coal slime pond, it is described shakeout after ash coal mud thickness for 5~12cm,
After trench digging, will be sprinkled water after above-mentioned coal slime hoe pine；
(3) vegetable seeds is carried out into bacterium detoxification treatment, is then soaked 12~15 hours with clear water, and vernalization 1~2 day,
In order to make full use of resource, the present embodiment is from lawn seed as Object of Development；
(4) seed by above-mentioned vernalization is sowed, and sows the 30~50cm of line width of row, is sprinkled water once within every 2~3 days,
Cultivation temperature is 25 DEG C~30 DEG C；In order that lawn seed has a growing environment preferably, preferably cultivation temperature is 28 DEG C, is treated
After germination, it is cultivated for turning into sprout in 1~2 month, regular sample examination is carried out to ash coal mud during culture；
(5) after the result of laboratory test of regular sampling reaches industrial standard, the lawn in planting site is all pulled out, after pulling out
Lawn used in cell and planted, lawn is made full use of, then will pull out the slurging screen behind lawn and go out sprout
After root system, watering maintenance one day；
(6) coal slime in coal slime pond is cleared out, the coal slime that the coal slime pond for emptying is used for next batch is processed；
(7) sample for being gathered three equivalent from the coal slime of step (6) by arbitrary sampling method is chemically examined, by three
Group analysis data obtains average value, i.e. ash content 33.11%, caloric value 16.15MJ/kg.
The ash content of this coal slime reduces 12.0%, and calorific value improves 18.1%, meets coal slime directly as power fuel
Requirement.
This method can also reduce the sulfur content in coal slime, and initial coal slime sulfur content is 0.98%, is processed by the above method
Afterwards, sulfur content is 0.88%, 10.2% is reduced compared with initial coal slime, beneficial to environmental protection.
Embodiment two：
(1) sample for being gathered three equivalent from a pile ash coal mud by arbitrary sampling method is chemically examined, and is passed through
Three groups of analysis datas obtain average value, i.e. ash content 37.63%, caloric value 13.63MJ/kg；
(2) ash coal mud is shakeout in coal slime pond, it is described shakeout after ash coal mud thickness for 5~12cm,
After trench digging, will be sprinkled water after above-mentioned coal slime hoe pine；
(3) vegetable seeds is carried out into bacterium detoxification treatment, is then soaked 12~15 hours with clear water, and vernalization 1~2 day,
In order to make full use of resource, the present embodiment is from legume-seeds as Object of Development；
(4) seed by above-mentioned vernalization is sowed, and sows the 30~50cm of line width of row, is sprinkled water once within every 2~3 days,
Cultivation temperature is 25 DEG C~30 DEG C；In order that lawn seed has a growing environment preferably, preferably cultivation temperature is 28 DEG C, is treated
After germination, it is cultivated for turning into sprout in 1~2 month, regular sample examination is carried out to ash coal mud during culture；
(5) after the result of laboratory test of regular sampling reaches industrial standard, the bean sprouts in planting site is all pulled out, bean sprouts is pulled out
After falling, moreover it is possible to edible, bean sprouts is made full use of, then will pulled out after the slurging screen behind bean sprouts goes out sprout root system, watering maintenance one
My god；
(6) coal slime in coal slime pond is cleared out, the coal slime that the coal slime pond for emptying is used for next batch is processed；
(7) sample for being gathered three equivalent from the coal slime of step (6) by arbitrary sampling method is chemically examined, by three
Group analysis data obtains average value, i.e. ash content 33.25%, caloric value 16.03MJ/kg.
The ash content of this coal slime reduces 11.6%, and calorific value improves 17.6%, meets coal slime directly as power fuel
Requirement.
This method can also reduce the sulfur content in coal slime, and initial coal slime sulfur content is 0.98%, is processed by the above method
Afterwards, sulfur content is 0.91%, 8.2% is reduced compared with initial coal slime, beneficial to environmental protection.
Claims (3)
1. it is a kind of reduce ash coal mud in ash content method, it is characterised in that：Comprise the following steps：
(1) ash coal mud is shakeout in coal slime pond, it is described shakeout after ash coal mud thickness for 5~12cm, trench digging
Afterwards, will be sprinkled water after above-mentioned coal slime hoe pine；
(2) vegetable seeds is carried out into bacterium detoxification treatment, is then soaked 12~15 hours with clear water, and vernalization 1~2 day；
(3) seed by above-mentioned vernalization is sowed, and sows the 30~50cm of line width of row, and watering in every 2~3 days once, is cultivated
Temperature is 25 DEG C~30 DEG C, after germinateing, is cultivated for turning into sprout in 1~2 month, and ash coal mud is carried out during culture
Regular sample examination；
(4) above-mentioned sprout is all pulled out, sifts out sprout root system, and maintenance one day of sprinkling water；
(5) coal slime in coal slime pond is cleared out, the coal slime that the coal slime pond for emptying is used for next batch is processed.
2. it is according to claim 1 it is a kind of reduce ash coal mud in ash content method, it is characterised in that：The step
(3) cultivation temperature is 28 DEG C in.
3. it is according to claim 1 and 2 it is a kind of reduce ash coal mud in ash content method, it is characterised in that：The step
Suddenly the seed in (2) is lawn seed or legume-seeds.
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| CN105154165B true CN105154165B (en) | 2017-05-31 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60235659A (en) * | 1984-05-08 | 1985-11-22 | Yukuo Katayama | Production of deashed coal |
| CN85107906A (en) * | 1984-10-26 | 1986-06-10 | 东京电力株式会社 | The process for deashing of coal |
| CN85109744A (en) * | 1984-11-20 | 1986-11-05 | 电源开发株式会社 | Remove the preparation of the high solid concentration water coal slime of ash content |
| CN1062921A (en) * | 1991-01-02 | 1992-07-22 | 成都科技大学 | The method of making refined coal by coal ash removal from raw coal |
| WO2004039927A1 (en) * | 2002-10-29 | 2004-05-13 | Ucc Energy Pty Limited | Process for demineralising coal |
| WO2010026600A1 (en) * | 2008-09-03 | 2010-03-11 | Tata Steel Limited | An improved beneficiation process to produce low ash clean coal from high ash coals |
| CN102041128A (en) * | 2010-12-03 | 2011-05-04 | 宜宾天原集团股份有限公司 | Chemical deashing method for coal |
| CN103421567A (en) * | 2013-01-10 | 2013-12-04 | 泸州兰良水泥有限公司 | Pure coal and production method thereof |
-
2015
- 2015-07-10 CN CN201510406739.7A patent/CN105154165B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60235659A (en) * | 1984-05-08 | 1985-11-22 | Yukuo Katayama | Production of deashed coal |
| CN85107906A (en) * | 1984-10-26 | 1986-06-10 | 东京电力株式会社 | The process for deashing of coal |
| CN85109744A (en) * | 1984-11-20 | 1986-11-05 | 电源开发株式会社 | Remove the preparation of the high solid concentration water coal slime of ash content |
| CN1062921A (en) * | 1991-01-02 | 1992-07-22 | 成都科技大学 | The method of making refined coal by coal ash removal from raw coal |
| WO2004039927A1 (en) * | 2002-10-29 | 2004-05-13 | Ucc Energy Pty Limited | Process for demineralising coal |
| WO2010026600A1 (en) * | 2008-09-03 | 2010-03-11 | Tata Steel Limited | An improved beneficiation process to produce low ash clean coal from high ash coals |
| CN102041128A (en) * | 2010-12-03 | 2011-05-04 | 宜宾天原集团股份有限公司 | Chemical deashing method for coal |
| CN103421567A (en) * | 2013-01-10 | 2013-12-04 | 泸州兰良水泥有限公司 | Pure coal and production method thereof |
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| CN105154165A (en) | 2015-12-16 |
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Granted publication date: 20170531 Termination date: 20180710 |