CN1252416C - Method for preparing coal water slurry - Google Patents
Method for preparing coal water slurry Download PDFInfo
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- CN1252416C CN1252416C CN 03104720 CN03104720A CN1252416C CN 1252416 C CN1252416 C CN 1252416C CN 03104720 CN03104720 CN 03104720 CN 03104720 A CN03104720 A CN 03104720A CN 1252416 C CN1252416 C CN 1252416C
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Abstract
The present invention relates to a method for preparing water coal slurry, which is characterized in that 65wt% of raw coal is firstly crushed smaller than 20mm, and then is pre-ground into powder whose granularity is from 70 mu m to 80 mu m by a vertical grinder in a dry mode; the powder is then added in a mixer, 34wt% of water and 1wt% of auxiliary agent for water coal slurry are added, and the mixture is stirred and mixed; then, the mixture is finely ground by a vibratory grinder, stabilizing agent for water coal slurry accounting for 1 % of the weight of water coal slurry is added, the mixture is ground into powder whose average granularity is from 40mu m to 50 mu m, the coal water slurry is made, and a powder material containing 18 to 25% of water can also be made by filtration. The preparation method has the advantages of enhancement of coal water slurry fineness and slurry-forming properties, enhancement of production capacity, reduction of power consumption, capability of being produced in coal production fields, convenient transportation of made wet powder, and reduction of environment pollution caused by raw coal transportation.
Description
Technical field
The present invention relates to a kind of preparation method of water-coal-slurry, belong to the raw coal manufacture field.
Background technology
Water-coal-slurry is a kind of novel clean fuel, now is listed in the energy policy and the environmental protection policy of " replace oil with coal, compression crude oil ".The preparation method of water-coal-slurry carries out the wet grinding pulping with various ball mills usually at present, though require very high to raw coal quality, but a small amount of coal spoil is arranged unavoidably, add ball mill and do not have classification, cause the granularity of water-coal-slurry inhomogeneous, even thick partially, this water-coal-slurry can only be used for cauldron, and arcola can't use because nozzle is little.
Summary of the invention
Purpose of the present invention is the shortcoming and deficiency in order to overcome above-mentioned prior art just, and the preparation method of the water-coal-slurry of a kind of first dry type pre-grinding rewetting formula fine grinding is provided, thereby improves water-coal-slurry fineness and paste-forming properties, enlarges the scope of application, reduces cost.
The objective of the invention is to realize by following technical proposal:
The preparation method of water-coal-slurry, it is characterized in that earlier raw coal being crushed to less than 20mm, carry out dry type pre-grinding with vertical mill again, granularity is 70-80 μ m, adds in the mixer then and adds water and the water-coal-slurry auxiliary agent mixes, raw coal: water: the percentage by weight of auxiliary agent is 65: 34: 1, carry out fine grinding with oscillating mill again, and the coal water mixture stabilizing agent of adding water-coal-slurry weight 1%, being milled down to particle mean size is 40-50 μ m, promptly makes water-coal-slurry.
According to repeatedly production practices, but described water-coal-slurry also filtering means dehydration make the powder that wet weight percentage is 18-25%.
Preparation method of the present invention adopts vertical mill can make the bulky grain pre-classification, make the vibromill of fine grinding enlarge output, this vibromill can add material mixing, stirring and auxiliary agent, fine gtinding once be finished, and has improved operating efficiency, cuts down the consumption of energy, stable production process.
Water-coal-slurry auxiliary agent that the present invention adopts and stabilizing agent are that to produce the trade mark by Kunshan, Jiangsu Province enlightening elder brother Fine Chemical Works be SWF.
Owing to take technique scheme to make the technology of the present invention compared with the prior art have following advantage and effect:
A) because two sections grindings have improved water-coal-slurry fineness and paste-forming properties:
B) because pre-grinding has reduced bulky grain and made fine grinding improve production capacity, save energy consumption, reduced cost;
C) water-coal-slurry is made filter cake or is filtered powder and is convenient to transportation, also can reduce the transportation raw coal and cause environmental pollution in producing coal ground production water-coal-slurry, and energy policy and environmental protection policy are organically combined.
The specific embodiment:
Embodiment 1
Getting Inner Mongol raw coal 650kg is crushed to less than 20mm and carries out dry type pre-grinding with vertical mill again, granularity is 70-80 μ m, add in the mixer then and add 340kg water and 10kg water-coal-slurry auxiliary agent adds coal water mixture stabilizing agent 10kg with oscillating mill again after mixing and carries out fine grinding, particle mean size is 40-50 μ m,, promptly make water-coal-slurry.
Embodiment 2
Embodiment 1 is made water-coal-slurry filter with filter, obtaining wet weight percentage is 18% powder.
Embodiment 3
Embodiment 1 is made water-coal-slurry filter, obtain wet weight percentage 25% powder with filter.
Claims (2)
1, a kind of preparation method of water-coal-slurry, it is characterized in that earlier raw coal being crushed to less than 20mm, carry out dry type pre-grinding with vertical mill again, granularity is 70-80 μ m, adds in the mixer then and adds water and the water-coal-slurry auxiliary agent mixes, raw coal: water: the percentage by weight of auxiliary agent is 65: 34: 1, carry out fine grinding with oscillating mill again, and the coal water mixture stabilizing agent of adding water-coal-slurry weight 1%, being milled down to particle mean size is 40-50 μ m, promptly makes water-coal-slurry.
2, preparation method according to claim 1, but it is characterized in that described water-coal-slurry also filtering means dehydration make the powder that wet weight percentage is 18-25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104720 CN1252416C (en) | 2003-02-27 | 2003-02-27 | Method for preparing coal water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104720 CN1252416C (en) | 2003-02-27 | 2003-02-27 | Method for preparing coal water slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1525104A CN1525104A (en) | 2004-09-01 |
| CN1252416C true CN1252416C (en) | 2006-04-19 |
Family
ID=34282338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03104720 Expired - Fee Related CN1252416C (en) | 2003-02-27 | 2003-02-27 | Method for preparing coal water slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1252416C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865411B (en) * | 2005-05-20 | 2011-01-19 | 贺来毅 | Coal slurry apparatus production line of multilevel-one time and multilevel-many times |
| CN101144042B (en) * | 2007-10-19 | 2013-04-10 | 张绍龙 | Technique for procuring desulfurization type water-solubility instant coal powder |
| CN101691927B (en) * | 2009-09-23 | 2011-04-20 | 郑州洪威高新能源工程技术有限公司 | Water coal slurry device and production process thereof |
| CN101985571A (en) * | 2010-10-26 | 2011-03-16 | 江阴市东发机械制造有限公司 | Method for preparing water coal slurry |
| CN103206718B (en) * | 2013-04-09 | 2015-04-15 | 陕煤集团神木张家峁矿业有限公司 | System and method for improving slurry property of low order coal slurry |
| CN103937568B (en) * | 2014-04-17 | 2016-03-02 | 中国五环工程有限公司 | Rich oxygen content coal prepares high-concentration coal-water slurry method |
| CN106987290B (en) * | 2017-06-02 | 2019-07-12 | 中煤科工清洁能源股份有限公司 | A method of improving pipeline transportation water-coal-slurry end product concentration |
| CN108659901B (en) * | 2018-05-17 | 2021-05-07 | 广州艾普纳米科技有限公司 | Method for preparing hyperfine coal water slurry by adopting single mill and low-rank coal |
-
2003
- 2003-02-27 CN CN 03104720 patent/CN1252416C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1525104A (en) | 2004-09-01 |
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Granted publication date: 20060419 Termination date: 20110227 |