CN1215907C - Smokeless ultralow ash content pure coal and the production technology thereof - Google Patents
Smokeless ultralow ash content pure coal and the production technology thereof Download PDFInfo
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- CN1215907C CN1215907C CN02143647.9A CN02143647A CN1215907C CN 1215907 C CN1215907 C CN 1215907C CN 02143647 A CN02143647 A CN 02143647A CN 1215907 C CN1215907 C CN 1215907C
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- coal
- smokeless
- ash content
- ash
- ultralow
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Abstract
The present invention relates to a deep-processing technique for coal. Smokeless fine grain coal with the grain size of 15 to 6mm and the ash content of 4 to 6% and working suspension liquid are supplied to a heavy medium cyclone. Thus, smokeless ultra-low ash content products having the ash content less than 2% or 3%, and tailing products are separated by the heavy medium cyclone. After the secondary medium removal of the products, the smokeless ultra-low ash content pure coal having the ash content less than 2% or 35 and the grain size of 0.5 to 15mm is formed finally. The present invention realizes the ultra-low ash content of the coal by a mechanical coal cleaning process, greatly improves the clean degree of the coal, and fills the blank of the national item.
Description
Technical field
The present invention relates to a kind of deep process technology of coal.
Background technology
The importance that ash is a clean coal technology falls in the coal degree of depth, and along with the development of China's chemical industry and environmental protection industry, the output of active carbon rapidly increases, and improve the quality of active carbon, just must reduce system and select active carbon raw material pit ash.It is reported that the enterprise-Jincheng, Shanxi Coal Industry Group of producing as anthracite can be produced ash content less than 2% ultralow culm, but its volatile matter is at 13-4%, sulfur content can't satisfy the requirement of producing high grade activated carbon more than 0.5%.At present, the large-scale production ash content is less than 2% and can satisfy the technology of producing the pure coal of smokeless ultralow ash that high grade activated carbon requires and still belong to blank at home.
Summary of the invention
The objective of the invention is this situation of the pure coal of ultralow ash of can't washing going out to meet the demands at standard machinery coal washing method, a kind of coal preparation technique is provided, from smart beans, sub-elect ash content less than 2% or 3%, can satisfy the pure coal of smokeless ultralow ash of producing the high grade activated carbon condition.
Technical scheme of the present invention is such.With granularity 15-6 millimeter, ash content is that the smart beans of 4-6% and the suspension of working together feed the cyclone that heavily is situated between, go out ash content less than 2% or 3% smokeless ultralow ash products and tail coal product by dual medium cyclone dressing, product carries out forming final products after the secondary de-mediated, with the method purification recovery operation suspension of direct magnetic separation.Final products are ash content less than 2% or 3%, granularity in 0.5-15 millimeter scope, sulphur content is less than 0.15%, volatile matter is less than 8%, fixed carbon is 89-91%, P
2O
5The pure coal of smokeless ultralow ash less than 0.3%.Above said work suspension is Iron Ore Powder and water, and the percentage by weight of Iron Ore Powder is 34-37%, the percentage by weight 63-66% of water.Feeding the work suspension of the cyclone that heavily is situated between and the percentage by weight ratio of smokeless smart beans is 73-76%: 24-26%.The emphasis equipment that adopts in the above-mentioned technology cyclone that heavily is situated between is selected the 2HMCC-500/400 type of doctor Yang Jianguo of the China Mining University development cyclone that heavily is situated between for use, the cyclone that heavily is situated between is composed in series by two cyclones that heavily are situated between that diameter is respectively 500 millimeters and 400 millimeters, the former is used for roughly selecting of coal, the latter is used for the selected of coal, and the precision of the cyclone that heavily is situated between is 0.01-0.02.
The present invention adopts the dense-medium separation method to select ash content less than 2% or 3% the pure coal of ultralow ash, because this product has improved the cleanliness factor of coal greatly, meets the requirement of producing high grade activated carbon, thereby has filled up the blank of domestic this project.
Description of drawings
Fig. 1 is a process chart of the present invention.
As shown in the figure, with granularity is the 15-6 millimeter, ash content is that smart beans and the work suspension of 4-6% together feeds the cyclone that heavily is situated between, choose two kinds of head coal products through the cyclone that heavily is situated between, again through sieve bend and the de-mediated of sculping screen secondary, rare medium of deviating from is directly squeezed into and is entered the qualified medium bucket after magnetic separator reclaims and return use.The figure medium is work suspension.
The specific embodiment
1, the preparation of work suspension: with vibrating ball-mill magnetite powder is milled to below 320 meshes, is hybridly prepared into work suspension by the percentage by weight 34-37% of Iron Ore Powder, the percentage by weight 63-66% of water;
2, be that the work suspension of 73-76% and smokeless smart beans that percentage by weight is 24-26% together feed the cyclone that heavily is situated between with percentage by weight;
3, the cyclone that heavily is situated between is selected ultralow culm respectively through sieve bend and sculping screen de-mediated, need add water spray in this process, guarantees the de-mediated effect;
4, through forming final products after the dehydration de-mediated, reprint to packing shop.
Claims (3)
1, pure coal of smokeless ultralow ash and production technology thereof, it is characterized in that: with granularity is that 15-6 millimeter, ash content are that the smokeless smart beans of 4-6% and the suspension of working together feed the cyclone that heavily is situated between, sub-elect ash content and be 2% and 3% ultralow ash products and tail coal product, product is the final pure coal of the ultralow ash of anthracite that forms after the secondary de-mediated, and this pure pit ash is less than 2% or 3%, and granularity is in 0.5-15 millimeter scope, sulphur content is less than 0.15%, volatile matter is less than 8%, and fixed carbon is 89-91%, P
20
5Less than 0.3%.
2, pure coal of smokeless ultralow ash according to claim 1 and production technology thereof, the percentage by weight that it is characterized in that the magnetite powder in the said work suspension is 34-37%, the percentage by weight of water is 63-66%; The percentage by weight of work suspension and smokeless smart beans is respectively 73-76% and 24-26%.
3, pure coal of smokeless ultralow ash according to claim 1 and production technology thereof, the cyclone that it is characterized in that heavily being situated between is composed in series by two cyclones that heavily are situated between that diameter is respectively 500 millimeters and 400 millimeters, the former is used for roughly selecting of coal, the latter is used for the selected of coal, and the precision of cyclone is 0.01-0.02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02143647.9A CN1215907C (en) | 2002-09-24 | 2002-09-24 | Smokeless ultralow ash content pure coal and the production technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02143647.9A CN1215907C (en) | 2002-09-24 | 2002-09-24 | Smokeless ultralow ash content pure coal and the production technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1485148A CN1485148A (en) | 2004-03-31 |
| CN1215907C true CN1215907C (en) | 2005-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02143647.9A Expired - Lifetime CN1215907C (en) | 2002-09-24 | 2002-09-24 | Smokeless ultralow ash content pure coal and the production technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1215907C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011679B (en) * | 2006-12-05 | 2010-10-06 | 唐山易通科技开发有限公司 | Simplified coal slurry dense-medium coal separation process |
| CN101433880B (en) * | 2008-11-07 | 2012-05-23 | 倪志群 | Method for sorting coal ash |
| CN101559402B (en) * | 2009-05-19 | 2012-08-01 | 昆明理工大学 | Method for purifying high-ash coke powder |
| CN106179713A (en) * | 2016-07-19 | 2016-12-07 | 四川乔丰新材料科技有限公司 | One exempts from desliming dual medium cyclone dressing technique |
| CN111681885A (en) * | 2020-05-14 | 2020-09-18 | 内蒙古浦瑞芬环保科技有限公司 | Raw material preparation method of super capacitor |
| CN111675213B (en) * | 2020-05-20 | 2023-03-31 | 淮北天澈碳基新材料科技有限公司 | Method for preparing graphitized carbon from anthracite |
-
2002
- 2002-09-24 CN CN02143647.9A patent/CN1215907C/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| CN1485148A (en) | 2004-03-31 |
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Granted publication date: 20050824 |