CN105154165A - Method for reducing ash in inferior slime - Google Patents
Method for reducing ash in inferior slime Download PDFInfo
- Publication number
- CN105154165A CN105154165A CN201510406739.7A CN201510406739A CN105154165A CN 105154165 A CN105154165 A CN 105154165A CN 201510406739 A CN201510406739 A CN 201510406739A CN 105154165 A CN105154165 A CN 105154165A
- Authority
- CN
- China
- Prior art keywords
- slime
- coal slime
- coal
- ash
- inferior
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
A method for reducing ash in inferior slime comprises the following steps: evenly spreading high ash slime in a slime pool to make the thickness of the spread high ash slime be 5-12cm, ditching, loosening the slime by using a hoe, and sprinkling water; carrying out degermation and detoxification treatment on plant seeds, immersing the treated seeds in clear water for 12-15h, and accelerating germination for 1-2d; sowing the germination accelerated seeds according to the line width of sowing lines of 30-50cm, sprinkling water once every 2-3 days, culturing at 25-30DEG C, continuously culturing for 1-2 months after germination to form bud seedlings, and carrying out regular sampling and testing on the high ash slime in the culture period; completely pulling up the bud seedlings, screening out bud seedling roots, and carrying out water sprinkling culture for 1d; and removing the slime out of the slime pool to obtain an empty slime pool used for next batch of slime treatment. The method has the advantages of simple operation, low cost, obvious reduction of the ash content and the sulfur content of treated slime, and no pollution to environment in the treatment process, and the produced slime can be directly applied in the industrial field.
Description
Technical field
The present invention relates to Coal dressing technical field, be specifically related to a kind of method reducing ash content in coal slime inferior.
Background technology
The semi-solid thing of the moisture formation of coal slime general reference coal dust, is a kind of product in coal production process, according to the difference of kind and the difference of formation mechenism, coal slime can be divided into following three major types:
(1) floating tail-coal of Oversized Coking Coal Cleaning Plant: the character of this kind of coal slime and washing spoil or middle coal similar, its ash content is higher, and thermal value is lower;
(2) coal slime of coal-water mixture output: as the coal slime of output after the washing coal slime of steam coal coal washery, coal Hydraulic transportation, it is all better than raw coal quality that this coal slime has, and usually mixes in readymade coal when quantity is few;
(3) the mine drainage coal slime of carrying secretly and waste dump water the coal slime of washing away: these coal slimes all belong to the dirty assorted coal slime in colliery, and be characterized in that quantity is few, quality is unstable, but general all good than floating tail-coal quality.
Coal slime can be divided 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 generally belongs to middle ash coal mud, its ash oontent accounts for 35% ~ 40% greatly, its calorific value generally just reaches 13.0 ~ 14.0MJ/kg, so that it can not be effectively applied to industrial circle.Along with the situation of the Energy resources relative shortage of China is day by day serious, seeks a kind of method effectively reducing ash content in coal slime inferior and there is greatly meaning.
Summary of the invention
The object of the present invention is to provide a kind of method reducing ash content in coal slime inferior, the method can reduce ash content largely and reduce production cost, and can not to environment, and the coal slime produced can directly apply to industrial circle.
For achieving the above object, the invention provides a kind of method reducing ash content in coal slime inferior, step is as follows:
(1) ash coal mud is shakeout in coal slime pond, described in shakeout after the thickness of ash coal mud be 5 ~ 12cm, after trench digging, by watering after above-mentioned coal slime hoe pine;
(2) plant seed is carried out bacterium detoxification treatment, then soak 12 ~ 15 hours with clear water, and vernalization 1 ~ 2 day;
(3) sowed by the seed of above-mentioned vernalization, the line width 30 ~ 50cm of sowing row, watering in every 2 ~ 3 days once, culture temperature is 25 DEG C ~ 30 DEG C, after germinateing, then continue cultivation and become bud seedling in 1 ~ 2 month, between incubation period, regular sample examination is carried out to ash coal mud;
(4) above-mentioned bud seedling is all pulled out, sift out bud shoot root system, and maintenance one day of sprinkling water;
(5) coal slime in coal slime pond cleared out, the coal slime pond emptied is for the coal slime process of next batch.
Preferably, in described step (3), culture temperature is 28 DEG C.
Preferably, the seed in described step (2) is lawn seed or legume-seeds.
The present invention adopts planting plants to reduce the ash content in coal slime, ash content in coal slime derives from mineral substance, and mineral substance is plant one of necessary condition in process of growth, therefore, the mineral composition in coal slime can be absorbed in the process of growth of plant, thus the ash oontent reduced in coal slime, effectively improve the thermal value of coal slime to meet coal slime directly as the requirement of power fuel; Meanwhile, plant is at growing period, and the biochemical reaction of root system can absorb the part element sulphur in coal slime, thus reduces the sulphur content of coal slime, benefits environmental protection.The present invention is simple to operate, and cost is low, and the coal slime ash content after process and sulphur content reduce successful, simultaneously can not to environment in treating processes, and can be widely used in ash coal ore deposit, the coal slime produced can directly apply to industrial circle.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment one:
(1) sample gathering three equivalent by arbitrary sampling method from a pile ash coal mud is chemically examined, and obtains mean value, i.e. ash content 37.63%, thermal value 13.63MJ/kg by three groups of analysis datas;
(2) ash coal mud is shakeout in coal slime pond, described in shakeout after the thickness of ash coal mud be 5 ~ 12cm, after trench digging, by watering after above-mentioned coal slime hoe pine;
(3) plant seed is carried out bacterium detoxification treatment, then soak 12 ~ 15 hours with clear water, and vernalization 1 ~ 2 day, in order to make full use of resource, the present embodiment selects lawn seed as Object of Development;
(4) sowed by the seed of above-mentioned vernalization, the line width 30 ~ 50cm of sowing row, once, culture temperature is 25 DEG C ~ 30 DEG C in watering in every 2 ~ 3 days; In order to make lawn seed have a growing environment preferably, preferred culture temperature is 28 DEG C, after germinateing, then continues cultivation and becomes bud seedling in 1 ~ 2 month, carry out regular sample examination between incubation period to ash coal mud;
(5) after the result of laboratory test of regularly sampling reaches industrial standards, all pulled out on lawn in planting site, the lawn after pulling out is used in community plants, and is made full use of on lawn, then sprout after shoot root system by pulling out the slurging screen behind lawn, watering maintenance one day;
(6) coal slime in coal slime pond cleared out, the coal slime pond emptied is for the coal slime process of next batch;
(7) sample gathering three equivalent by arbitrary sampling method from the coal slime of step (6) is chemically examined, and obtains mean value, i.e. ash content 33.11%, thermal value 16.15MJ/kg by three groups of analysis datas.
The ash content of this coal slime reduces 12.0%, and calorific value improves 18.1%, meets coal slime directly as the requirement of power fuel.
Present method also can reduce the sulphur content in coal slime, and initial coal slime sulphur content is 0.98%, and after aforesaid method process, sulphur content is 0.88%, reduces 10.2%, benefit environmental protection compared with initial coal slime.
Embodiment two:
(1) sample gathering three equivalent by arbitrary sampling method from a pile ash coal mud is chemically examined, and obtains mean value, i.e. ash content 37.63%, thermal value 13.63MJ/kg by three groups of analysis datas;
(2) ash coal mud is shakeout in coal slime pond, described in shakeout after the thickness of ash coal mud be 5 ~ 12cm, after trench digging, by watering after above-mentioned coal slime hoe pine;
(3) plant seed is carried out bacterium detoxification treatment, then soak 12 ~ 15 hours with clear water, and vernalization 1 ~ 2 day, in order to make full use of resource, the present embodiment selects legume-seeds as Object of Development;
(4) sowed by the seed of above-mentioned vernalization, the line width 30 ~ 50cm of sowing row, once, culture temperature is 25 DEG C ~ 30 DEG C in watering in every 2 ~ 3 days; In order to make lawn seed have a growing environment preferably, preferred culture temperature is 28 DEG C, after germinateing, then continues cultivation and becomes bud seedling in 1 ~ 2 month, carry out regular sample examination between incubation period to ash coal mud;
(5) after the result of laboratory test of regularly sampling reaches industrial standards, the bean sprouts in planting site all being pulled out, after bean sprouts is pulled out, can also eat, bean sprouts is made full use of, then sprouting after shoot root system by pulling out the slurging screen behind bean sprouts, watering maintenance one day;
(6) coal slime in coal slime pond cleared out, the coal slime pond emptied is for the coal slime process of next batch;
(7) sample gathering three equivalent by arbitrary sampling method from the coal slime of step (6) is chemically examined, and obtains mean value, i.e. ash content 33.25%, thermal value 16.03MJ/kg by three groups of analysis datas.
The ash content of this coal slime reduces 11.6%, and calorific value improves 17.6%, meets coal slime directly as the requirement of power fuel.
Present method also can reduce the sulphur content in coal slime, and initial coal slime sulphur content is 0.98%, and after aforesaid method process, sulphur content is 0.91%, reduces 8.2%, benefit environmental protection compared with initial coal slime.
Claims (3)
1. reduce a method for ash content in coal slime inferior, it is characterized in that: comprise the following steps:
(1) ash coal mud is shakeout in coal slime pond, described in shakeout after the thickness of ash coal mud be 5 ~ 12cm, after trench digging, by watering after above-mentioned coal slime hoe pine;
(2) plant seed is carried out bacterium detoxification treatment, then soak 12 ~ 15 hours with clear water, and vernalization 1 ~ 2 day;
(3) sowed by the seed of above-mentioned vernalization, the line width 30 ~ 50cm of sowing row, watering in every 2 ~ 3 days once, culture temperature is 25 DEG C ~ 30 DEG C, after germinateing, then continue cultivation and become bud seedling in 1 ~ 2 month, between incubation period, regular sample examination is carried out to ash coal mud;
(4) above-mentioned bud seedling is all pulled out, sift out bud shoot root system, and maintenance one day of sprinkling water;
(5) coal slime in coal slime pond cleared out, the coal slime pond emptied is for the coal slime process of next batch.
2. a kind of method reducing ash content in coal slime inferior according to claim 1, is characterized in that: in described step (3), culture temperature is 28 DEG C.
3. a kind of method reducing ash content in coal slime inferior according to claim 1 and 2, is characterized in that: the seed in described step (2) is lawn seed or legume-seeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510406739.7A CN105154165B (en) | 2015-07-10 | 2015-07-10 | A kind of method for reducing ash content in ash coal mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510406739.7A CN105154165B (en) | 2015-07-10 | 2015-07-10 | A kind of method for reducing ash content in ash coal mud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105154165A true CN105154165A (en) | 2015-12-16 |
| CN105154165B CN105154165B (en) | 2017-05-31 |
Family
ID=54795221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510406739.7A Expired - Fee Related CN105154165B (en) | 2015-07-10 | 2015-07-10 | A kind of method for reducing ash content in ash coal mud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105154165B (en) |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105154165B (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zheng et al. | Improving crop yields, nitrogen use efficiencies, and profits by using mixtures of coated controlled-released and uncoated urea in a wheat-maize system | |
| CN105542775B (en) | A kind of passivator and its application for faintly acid cadmium pollution soil | |
| Lakitan et al. | The benefits of biochar on rice growth and yield in tropical riparian wetland, South Sumatra, Indonesia | |
| Nest et al. | P availability and P leaching after reducing the mineral P fertilization and the use of digestate products as new organic fertilizers in a 4-year field trial with high P status | |
| CN105521989B (en) | Restoration of the ecosystem composition and the ecological restoring method for utilizing this | |
| CN102405706A (en) | Improving method of cured saline-alkali soil by utilizing agricultural waste biomass carbide | |
| CN104663065A (en) | Method for improving saline alkali soil in use of biomass charcoal | |
| CN112574752A (en) | Tailing sand composite soil conditioner and copper-molybdenum ore tailing ecological greening method | |
| CN104604409A (en) | Fertilizing method for rapidly improving fertility of mine reclaimed soil | |
| CN112474776B (en) | Mother substance restoration method for acid soil | |
| CN111408618B (en) | Method for restoring cadmium-polluted soil by utilizing black nightshade and corn intercropping plants | |
| CN104012387A (en) | Organic composite substrate for oilseed rape tray-soilless seedling and preparation method thereof | |
| Wang et al. | Effects of Biochar and Compost on Mung Bean Growth and Soil Properties in a Semi-arid Area of Northeast China. | |
| CN110063100A (en) | A method of for improveing buried steam pipe system and the salinized soil improvement of salinized soil | |
| CN107432131B (en) | Saline-alkali soil improvement method | |
| CN113519231A (en) | Soilless reclamation method for fine sand tailings | |
| CN105028100A (en) | Seedling culturing and planting method for taxus chinensis | |
| CN109365506B (en) | Heavy metal passivator suitable for medium-alkaline cadmium contaminated soil and application thereof | |
| CN116493405A (en) | Method for repairing tailings by combining blue algae-moss crust and biochar-semi-carbonized sludge modifier | |
| CN105154165B (en) | A kind of method for reducing ash content in ash coal mud | |
| Placek et al. | Methods for calculating carbon sequestration in degraded soil of zinc smelter and post-mining areas | |
| RU2702708C1 (en) | Man-made soil | |
| Kharytonov et al. | Bioenergetic assesment of sweet sorghum grown on reclaimed lands | |
| CN106520137A (en) | Modifier for reducing methyl mercury pollution in acidic rice field and method thereof | |
| CN101830562B (en) | Construction agriculture pollution control type night soil recycling technique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20180710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |