CN105131995B - Control the blending method of the wear-resisting intensity of coke - Google Patents
Control the blending method of the wear-resisting intensity of coke Download PDFInfo
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- CN105131995B CN105131995B CN201510559282.3A CN201510559282A CN105131995B CN 105131995 B CN105131995 B CN 105131995B CN 201510559282 A CN201510559282 A CN 201510559282A CN 105131995 B CN105131995 B CN 105131995B
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Abstract
The invention discloses a kind of blending method for controlling the wear-resisting intensity of coke, this method comprises the following steps：1) gas rich coal and rich coal quality are controlled；2) weakly caking coking coal is divided into low rotten weakly caking coking coal and high rotten weakly caking coal；3) adapted.Weakly caking coking coal is divided into high rotten weakly caking coking coal and low rotten weakly caking coking coal by the present invention first, and by controlling the dosage of gas rich coal, the quality of rich coal and each single grade coal, weakly caking coking coal can finally be greatly improved matches somebody with somebody dosage, under the conditions of without coke making process such as moulded coal, precomminution, coal damping, coke M10≤6.0% obtained by more than 6 meters coke oven dry coke quenching.
Description
Technical field
The invention belongs to technical field of coal chemical industry, and in particular to a kind of blending method for controlling the wear-resisting intensity of coke.
Background technology
Primary raw material of the coke as blast furnace process, there should be higher cold strength in blast furnace, be existed with resisting coke
The mechanical shock and abrasion being subject to during lump zone decline；Coke should also have higher hot strength, to ensure coke
On tuyere area top because having enough intensity and lumpiness, and the dead material in higher temperature during carbon's solution loss reaction consumption carbon 25%~35%
Post area, tuyere area keep certain granularity and intensity, and therefore, coke quality index generally has the crushing strength M40 of coke, coke
Wear-resisting intensity M10, and coke calorific intensity CRI, CSR composition.
At present, the deficiency of the wear-resisting intensity of coke, it is generally recognized that, gel quantity low by the cohesiveness index of mixed coal
Caused by deficiency, when wear-resisting intensity index deteriorates, conventional art thinks that the cohesiveness of mixed coal should be increased, that is, improves G
Value and Y value, especially when weakly caking coking coal improves with dosage, the high Y value single grade coal of high G-value improves with dosage.But actually match somebody with somebody
Being found in coal, low rotten weakly caking coking coal differs greatly with the rotten weakly caking coking coal ature of coal of height, in actual coal blending,
There is also larger difference for the two application method.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of blending method for controlling the wear-resisting intensity of coke, and this method can
To distinguish using low rotten weakly caking coking coal and high rotten weakly caking coking coal, and increase matching somebody with somebody for weakly caking coking coal
Dosage, under the conditions of without coke making process such as moulded coal, precomminution, coal damping, coke M10 obtained by more than 6 meters coke oven dry coke quenching≤
6.0%.
In order to solve the above technical problems, the technical scheme designed by the present invention comprises the following steps：
(1) gas rich coal and rich coal quality are controlled：
Gas rich coal lgMF >=4.8, rich coal volatile matter≤33%, lgMF >=4.0；
(2) differentiation of weakly caking coking coal：
WillY value≤12mm coking coal is defined as low rotten weakly caking coking coal；WillThe coking coal of G value≤65 is defined as high rotten weakly caking coal.
(3) application method：
1. low rotten weakly caking coking coal matches somebody with somebody dosage≤10%, the rotten weakly caking coking coal ＞ 12% of height：
Low rotten weakly caking coking coal：0~10%；Gas rich coal：0~10%；Rich coal：10%~25%；Coking coal 38~
42%；1/3 coking coal：15%~35%；The rotten weakly caking coking coal of height：13~18%；Wherein：Gas rich coal and rich coal sum are
20%~25%, low rotten weakly caking coking coal and high rotten weakly caking coking coal sum are 13%~28%.
2. low rotten weakly caking coking coal matches somebody with somebody dosage ＞ 10%, rotten weakly caking coking coal≤12% of height：
Low rotten weakly caking coking coal：11~15%；Gas rich coal 0~6%；Rich coal：10%~16%；Coking coal 38~
42%；1/3 coking coal：10%~35%；The rotten weakly caking coking coal of height：8~12%；Wherein：Gas rich coal and rich coal sum are
15%~20%, low rotten weakly caking coking coal and high rotten weakly caking coking coal sum are 20%~25%；
Or adapted is as follows：Low rotten weakly caking coking coal：11~20%；Rich coal：15%~20%；Coking coal 38~
42%；1/3 coking coal：10%~30%；The rotten weakly caking coking coal of height：5~10%, low rotten weakly caking coking coal and height
Rotten weakly caking coking coal sum is 20%~25%
Weakly caking coking coal is divided into high rotten weakly caking coking coal and low rotten weakly caking by the present invention first
Coking coal, and by controlling the dosage of gas rich coal, the quality of rich coal and each single grade coal, can finally greatly improve weakly caking refining
Coking coal matches somebody with somebody dosage, under the conditions of without coke making process such as moulded coal, precomminution, coal damping, coke obtained by more than 6 meters coke oven dry coke quenching
M10≤6.0%.
Embodiment
Technical scheme designed by the present invention comprises the following steps：
(1) gas rich coal and rich coal quality are controlled：
Gas rich coal lgMF >=4.8, rich coal volatile matter≤33%, lgMF >=4.0；
(2) differentiation of weakly caking coking coal：
WillY value≤12mm coking coal is defined as low rotten weakly caking coking coal；WillThe coking coal of G value≤65 is defined as high rotten weakly caking coal.
(3) application method：
1. low rotten weakly caking coking coal matches somebody with somebody dosage≤10%, the rotten weakly caking coking coal ＞ 12% of height：
Low rotten weakly caking coking coal：0~10%；Gas rich coal：0~10%；Rich coal：10%~25%；Coking coal 38~
42%；1/3 coking coal：15%~35%；The rotten weakly caking coking coal of height：13~18%；Wherein：Gas rich coal and rich coal sum are
20%~25%, low rotten weakly caking coking coal and high rotten weakly caking coking coal sum are 13%~28%.
2. low rotten weakly caking coking coal matches somebody with somebody dosage ＞ 10%, rotten weakly caking coking coal≤12% of height：
Low rotten weakly caking coking coal：11~15%；Gas rich coal 0~6%；Rich coal：10%~16%；Coking coal 38~
42%；1/3 coking coal：10%~35%；The rotten weakly caking coking coal of height：8~12%；Wherein：Gas rich coal and rich coal sum are
15%~20%, low rotten weakly caking coking coal and high rotten weakly caking coking coal sum are 20%~25%；
Or adapted is as follows：Low rotten weakly caking coking coal：11~20%；Rich coal：15%~20%；Coking coal 38~
42%；1/3 coking coal：10%~30%；The rotten weakly caking coking coal of height：5~10%, low rotten weakly caking coking coal and height
Rotten weakly caking coking coal sum is 20%~25%.
Each single grade coal coal analysis the results are shown in Table 1, and the specific embodiment of each Coal Blending Schemes is shown in Table 2.
The single grade coal coal analysis result of table 1
The specific embodiment of the Coal Blending Schemes of table 2
The gained coke of embodiment 1~8 is not under conditions of coal damping, shaped coal technology and precomminution technique is used, at 6 meters
Above coke oven is made.
Claims (2)
- A kind of 1. blending method for controlling the wear-resisting intensity of coke, it is characterised in that：This method comprises the following steps：1) control gas rich coal and rich coal quality as follows：Fluidity lgMF >=4.8 of gas rich coal；Fluidity lgMF >=4.0 of rich coal, volatile matter≤33%；2) differentiation of weakly caking coking coal：WillY value≤12mm coking coal is defined as low rotten weakly caking coking coal；WillThe coking coal of G value≤65 is defined as high rotten weakly caking coking coal；3) adapted is carried out as follows：3.1) low rotten weakly caking coking coal matches somebody with somebody dosage≤10%, then：Low rotten weakly caking coking coal：0~10%；Gas rich coal：0~10%；Rich coal：10%~25%；Coking coal 38~42%； 1/3 coking coal：15%~35%；The rotten weakly caking coking coal of height：13~18%；Wherein：Gas rich coal and rich coal sum are 20% ~25%, low rotten weakly caking coking coal and high rotten weakly caking coking coal sum are 13%~28%；3.2) low rotten weakly caking coking coal matches somebody with somebody dosage ＞ 10%, then：Low rotten weakly caking coking coal：11~15%；Gas rich coal 0~6%；Rich coal：10%~16%；Coking coal 38~42%； 1/3 coking coal：10%~35%；The rotten weakly caking coking coal of height：8~12%；Wherein：Gas rich coal and rich coal sum be 15%~ 20%, low rotten weakly caking coking coal and high rotten weakly caking coking coal sum are 20%~25%.
- A kind of 2. blending method for controlling the wear-resisting intensity of coke, it is characterised in that：This method comprises the following steps：1) control gas rich coal and rich coal quality as follows：Fluidity lgMF >=4.8 of gas rich coal；Fluidity lgMF >=4.0 of rich coal, volatile matter≤33%；2) differentiation of weakly caking coking coal：WillY value≤12mm coking coal is defined as low rotten weakly caking coking coal；WillThe coking coal of G value≤65 is defined as high rotten weakly caking coking coal；3) adapted is carried out as follows：3.1) low rotten weakly caking coking coal matches somebody with somebody dosage≤10%, then：Low rotten weakly caking coking coal：0~10%；Gas rich coal：0~10%；Rich coal：10%~25%；Coking coal 38~42%； 1/3 coking coal：15%~35%；The rotten weakly caking coking coal of height：13~18%；Wherein：Gas rich coal and rich coal sum are 20% ~25%, low rotten weakly caking coking coal and high rotten weakly caking coking coal sum are 13%~28%；3.2) low rotten weakly caking coking coal matches somebody with somebody dosage ＞ 10%, then：Low rotten weakly caking coking coal：11~20%；Rich coal：15%~20%；Coking coal 38~42%；1/3 coking coal：10%~ 30%；The rotten weakly caking coking coal of height：5~10%, the rotten weakly caking coking coal of low rotten weakly caking coking coal and height Sum is 20%~25%.
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| CN105885904B (en) * | 2016-05-04 | 2018-10-16 | 武汉钢铁有限公司 | A method of control coke wear-resistant strength |
| CN111662735B (en) * | 2020-05-29 | 2021-07-06 | 鞍钢股份有限公司 | Coking and coal blending method for preparing metallurgical coke by using waste plastics |
| CN112094662A (en) * | 2020-09-25 | 2020-12-18 | 湖南华菱湘潭钢铁有限公司 | Coking and coal blending method |
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| JPS6187787A (en) * | 1984-10-05 | 1986-05-06 | Nippon Steel Chem Co Ltd | Method for controlling blend of coal for production of coke |
| CN101081988B (en) * | 2007-06-29 | 2011-02-16 | 武汉钢铁(集团)公司 | Gas coal joined coking blending method |
| CN101081989B (en) * | 2007-06-29 | 2010-05-19 | 武汉钢铁(集团)公司 | Coal coking blending method |
| CN101649219B (en) * | 2009-09-11 | 2012-11-14 | 武汉钢铁(集团)公司 | Method for 1/3 coking coal to participate in coking and blending coal |
| CN102604658A (en) * | 2012-04-18 | 2012-07-25 | 武汉钢铁(集团)公司 | Coking coal blending method using weakly-caking coking coal |
| CN104845650B (en) * | 2015-05-22 | 2017-12-12 | 武汉钢铁有限公司 | Control coke M10The coke making and coal blending method of index |
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