CN1161366A - Coal compounding method for producing wet-milled metallurgical coke powder, and process for producing same - Google Patents
Coal compounding method for producing wet-milled metallurgical coke powder, and process for producing same Download PDFInfo
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- CN1161366A CN1161366A CN 96115717 CN96115717A CN1161366A CN 1161366 A CN1161366 A CN 1161366A CN 96115717 CN96115717 CN 96115717 CN 96115717 A CN96115717 A CN 96115717A CN 1161366 A CN1161366 A CN 1161366A
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Abstract
A wet grinding fine coke coal blending method uses grain size equal to or less than 0.2 mm fine coke as inert additive, leanizing agent. After it is mixed with other coking coal, then fed into the carbonizing chamber of coke oven for coking, the weight of compounded wet grinding fine coke is equal to or less than 8%. The addition of wet grinding fine coke into the coking coal significantly increases the quantity of high volatile coal.
Description
The present invention relates to a kind of wet-milling coke powder blending method and wet-milling coke powder technology thereof of refining metallurgical coke.
At present, along with developing rapidly of Iron And Steel Industry, high-quality caking coal resource worsening shortages.For a long time, in order to utilize coal resources effectively and reasonably, how to obtain the measured metallurgical coke of matter be one of important topic of domestic and international metallurgy industry to the upgrading by mixed coal.Allocate coke powder into and improve the amount of allocating into of fat coal as leaning agent, increase the intensity of institute's coking charcoal, the blending method of producing the high-quality metallurgical coke is subjected to domestic and international coking worker's attention day by day.That more domestic medium and small coal chemical enterprises once carried out was higher at the coal blending fugitive constituent, its cohesiveness has again in certain coal charge more than needed and allocates inert material (high temperature coke powder, semicoke or petroleum coke powder, hard coal etc.) into, to slow down the string stress after semicoke generates, reduce the generation of crackle, improve the test of metallurgical coke quality and obtain certain effect, but its coke powder amount of allocating into generally is no more than 5%, coke fines size＜0.5mm, and set up the dry and fine grinding workshop section of corresponding coke powder.Because dry grinding coke powder dust pollution serious problems are not resolved, to making more domestic medium and small coal chemical enterprises no longer adopt this kind dry grinding coke powder blending method and dry grinding coke powder technology thereof.Second phase nineteen ninety-five " external coking chemistry " discloses the coal blending technology and the dry grinding coke powder technology of coke-oven plant, German Sa Er area a kind of " join coke powder and make production metallurgy Jiao firm by ramming ", it adopts and makes side coal technology firm by ramming, the content of coke fines size＜0.09mm reaches 65% in the mixed coal, the fat coal amount of allocating into can reach more than 70%, and the coke powder amount of allocating into is 8%.The characteristics of its coke powder drying and grinding technology are: one, the dry and grinding of coke powder is carried out in same equipment; Two, grinding and classification are to use by realizing in ball mill that is contained in closed-circuit system and the air classifier; Three, with pneumatic conveyer coke powder is delivered to dosing unit; Four, make flue gas or delivering gas enter atmosphere after bag filter equipment is collected the part coke powder through two chimneys; Five, coke powder is added in the beater grinder and carry out homogenizing with coal.This coke powder coal blending TAMPING COKING PROCESS has improved the amount of allocating into (can reach 70%) of fat coal and has improved the intensity of metallurgical coke that (M40 73% brings up to 76.4% by what do not join coke powder greatly, M10 is increased to 6.2% by 5.6%), the technical process advanced person in its drying and grinding coke powder workshop, good dedusting effect.But its existing technology is too complicated, drawbacks such as facility investment is more, unit consumption of energy height, and the practical situation present according to China can't be widely used in coal chemical enterprise.
The purpose of this invention is to provide a kind of wet-milling coke powder blending method and wet-milling coke powder technology thereof that can overcome the refining metallurgical coke of above-mentioned dry grinding coke powder weak point.
The object of the present invention is achieved like this: the wet-milling coke powder blending method and the wet-milling coke powder technology thereof of refining metallurgical coke, it is that wet-milling coke powder with coke powder particle diameter≤0.2mm is as inert additwe, leaning agent, with the laggard coke furnace carbonization chamber coking that is mixed of other coking coal, its wet-milling coke powder amount of allocating into≤8%.The raw material coke powder of coke powder particle diameter≤10mm by transfer roller input ball mill with pigment broken for the coke powder particle diameter be that the slip of 0.05-0.5mm is gone into kiln basin side by side, its weight ratio of going into to grind coke powder and water is 1/2-4/5, this slip is admitted to becomes water content≤20% after filter separates its moisture, the coke powder particle diameter is the finely-ground coke of 0.05-0.5mm, after finely-ground coke is handled by transfer roller input dosing vessel, send on the transfer roller that electronic scales is housed by the batching dish, then quantitatively sent in the beater grinder of coal blending chamber be mixed with other coking coal after, advance coke furnace carbonization chamber coking.
Advantage of the present invention: one, remarkable benefit, the wet-milling coke powder blending method of refining metallurgical coke substantially can be near the various technico-economical comparisones of external dry grinding coke powder coal-blending coking, its coke strenth M40 is increased to 75.6% by 74.9%, and M10 reduces to 8.12% by 8.37%; So coke quality obviously improves, under the prerequisite that guarantees coke quality, after allocating the wet-milling coke powder amount of allocating into≤8% into coking coal, the proportioning that makes its fat coal is increased to 50-70% by original 46%, the amount of allocating into of coking coal can be reduced to 15-20% by original 30-40% and medium fugitive constituent bonds by force, so saved the coking coal and the rich coal of domestic shortage greatly, and wet-milling coke powder coal-blending coking also can alleviate coal in the swelling pressure of molten state to furnace wall, prolongs its coke oven stove order; Two, comprehensive cost is low, adopts wet-milling coke powder technology to change the complicated technology of dry grinding coke powder, so facility investment is few, energy consumption is low, no dust pollution, its energy consumption only is 1/5 of an external equal scale dry grinding coke powder.Widespread use of the present invention can produce significant social, economic benefit.
Figure of description is a wet-milling coke powder process flow sheet of the present invention.
The present invention is described in further detail in conjunction with the embodiments below with reference to Figure of description.
The wet-milling coke powder blending method of refining metallurgical coke of the present invention and wet-milling coke powder technology thereof, it is that wet-milling coke powder with coke powder particle diameter≤0.2mm is as inert additwe, leaning agent, with the laggard coke furnace carbonization chamber coking that is mixed of other coking coal, its wet-milling coke powder amount of allocating into≤8%.The raw material coke powder of coke powder particle diameter≤10mm is by transfer roller
(1) input ball mill (2) with pigment broken for the coke powder particle diameter be that the slip of 0.05-0.5mm is gone into kiln basin (3) side by side, its weight ratio of going into to grind coke powder and water is 1/2-4/5, this slip is admitted to becomes water content≤20% after filter (4) separates its moisture, the coke powder particle diameter is the finely-ground coke of 0.05-0.5mm, after finely-ground coke is handled by transfer roller (7) input dosing vessel (8), send on the transfer roller (10) that electronic scales (11) are housed by batching dish (9), then quantitatively sent in the coal blending chamber beater grinder (12) be mixed with other coking coal after, advance coke furnace carbonization chamber coking.Water after slip separates through filter (4) enters settling bowl (6) by automatic draining device (5), and the water purification after sedimentation is handled is admitted to the ingress of ball mill (2) once more.Other technology, the equipment that uses that matches with the present invention is prior art, does not just give unnecessary details one by one here.
Claims (3)
1, a kind of wet-milling coke powder blending method and wet-milling coke powder technology thereof of refining metallurgical coke, it is characterized in that: with the wet-milling coke powder of coke powder particle diameter≤0.2mm as inert additwe, leaning agent, with the laggard coke furnace carbonization chamber coking that is mixed of other coking coal, its wet-milling coke powder amount of allocating into≤8%.
2, the wet-milling coke powder blending method of refining metallurgical coke according to claim 1 and wet-milling coke powder technology thereof, it is characterized in that: the raw material coke powder of coke powder particle diameter≤10mm by transfer roller (1) input ball mill (2) with pigment broken for the coke powder particle diameter be that the slip of 0.05-0.5mm is gone into kiln basin (3) side by side, its weight ratio of going into to grind coke powder and water is 1/2-4/5, this slip is admitted to becomes water content≤20% after filter (4) separates its moisture, the coke powder particle diameter is the finely-ground coke of 0.05--0.5mm, after finely-ground coke is handled by transfer roller (7) input dosing vessel (8), send on the transfer roller (10) that electronic scales (11) are housed by batching dish (9), then quantitatively sent in the coal blending chamber beater grinder (12) be mixed with other coking coal after, advance coke furnace carbonization chamber coking.
3, the wet-milling coke powder blending method of refining metallurgical coke according to claim 1 and 2 and wet-milling coke powder technology thereof, it is characterized in that: the water after slip separates through filter (4) enters settling bowl (6) by automatic draining device (5), and the water purification after sedimentation is handled is admitted to the ingress of ball mill (2) once more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115717A CN1078605C (en) | 1996-04-02 | 1996-04-02 | Coal compounding method for producing wet-milled metallurgical coke powder, and process for producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115717A CN1078605C (en) | 1996-04-02 | 1996-04-02 | Coal compounding method for producing wet-milled metallurgical coke powder, and process for producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1161366A true CN1161366A (en) | 1997-10-08 |
| CN1078605C CN1078605C (en) | 2002-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96115717A Expired - Fee Related CN1078605C (en) | 1996-04-02 | 1996-04-02 | Coal compounding method for producing wet-milled metallurgical coke powder, and process for producing same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705104B (en) * | 2009-11-12 | 2012-08-22 | 重庆汉砧科技有限公司 | Pulverized coal activator and coking coal prepared from same |
| CN101418221B (en) * | 2007-10-23 | 2012-09-05 | 上海寰球石油化学工程有限公司 | Remixing process of dry pulverized coke and wet pulverized coke of coke making raw material |
| CN103517965A (en) * | 2011-05-11 | 2014-01-15 | 驰瑞莱股份公司 | Closed coke slurry system and method for gaining sellable petroleum coke pieces out of solidified petroleum coke in a coke drum unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049371A (en) * | 1990-09-14 | 1991-02-20 | 陶国延 | The adhering method of fluoroplastics and metal and binding agent |
-
1996
- 1996-04-02 CN CN96115717A patent/CN1078605C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418221B (en) * | 2007-10-23 | 2012-09-05 | 上海寰球石油化学工程有限公司 | Remixing process of dry pulverized coke and wet pulverized coke of coke making raw material |
| CN101705104B (en) * | 2009-11-12 | 2012-08-22 | 重庆汉砧科技有限公司 | Pulverized coal activator and coking coal prepared from same |
| CN103517965A (en) * | 2011-05-11 | 2014-01-15 | 驰瑞莱股份公司 | Closed coke slurry system and method for gaining sellable petroleum coke pieces out of solidified petroleum coke in a coke drum unit |
| CN103517965B (en) * | 2011-05-11 | 2015-09-23 | 驰瑞莱股份公司 | For obtaining the closed coke slip system and method for the oil the sold coke button be made up of solidified petroleum Jiao in coke-drum unit |
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| Publication number | Publication date |
|---|---|
| CN1078605C (en) | 2002-01-30 |
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