CN105131995A - Coal blending method for controlling coke abrasive resistance - Google Patents
Coal blending method for controlling coke abrasive resistance Download PDFInfo
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- CN105131995A CN105131995A CN201510559282.3A CN201510559282A CN105131995A CN 105131995 A CN105131995 A CN 105131995A CN 201510559282 A CN201510559282 A CN 201510559282A CN 105131995 A CN105131995 A CN 105131995A
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Abstract
The invention discloses a coal blending method for controlling coke abrasive resistance. The coal blending method includes the following steps that mass of gas-fat coal and mass of fat coal are controlled; a low-cohesiveness coking coal region is divided into low-metamorphism low-cohesiveness coking coal and high-metamorphism low-cohesiveness coal; blending is performed for utilization. The low-cohesiveness coking coal region is divided into the low-metamorphism low-cohesiveness coking coal and the high-metamorphism low-cohesiveness coal, by controlling the mass of gas-fat coal, the mass of fat coal and usage amount of single coal of various types, the blending amount of the low-cohesiveness coking coal can be increased substantially, and under the coking technological conditions of no coal briquette, precrushing, coal moisture control and the like, the amount of coke M10 obtained by dry quenching through a coking oven with the height of 6 meters or more is smaller than or equal to 6.0%.
Description
Technical field
The invention belongs to technical field of coal chemical industry, be specifically related to a kind of blending method controlling coke abrasive wear resistance.
Background technology
Coke, as the main raw material of blast-furnace smelting, should have higher cold strength in blast furnace, to resist coke in the mechanical shock be subject in lump zone decline process and wearing and tearing; Coke also should have higher hot strength, to ensure coke on top, tuyere zone because having enough intensity and lumpiness when carbon's solution loss reaction consumes carbon 25% ~ 35%, and keep certain granularity and intensity in the dead stock column district of higher temperature, tuyere zone, therefore, coke quality index has the shatter strength M40 of coke usually, the abrasive wear resistance M10 of coke, and the hot strength CRI of coke, CSR composition.
At present, the deficiency of the abrasive wear resistance of coke, be commonly referred to be by the agglutinating value(of coal) index of mixed coal low, plastic mass quantity not sufficient causes, when deterioration appears in abrasive wear resistance index, conventional art thinks the agglutinating value(of coal) that should increase mixed coal, namely puies forward high G-value and Y value, especially, when weakly caking coking coal adapted amount improves, high G-value high Y value single grade coal adapted amount improves.But find in actual coal blending, low rotten weakly caking coking coal and the height weakly caking coking coal ature of coal that goes bad differs greatly, and in actual coal blending, the two application method also exists larger difference.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of blending method controlling coke abrasive wear resistance, the method can be distinguished and use low rotten weakly caking coking coal and height to go bad weakly caking coking coal, and increase the adapted amount of weakly caking coking coal, without under the coke making process conditions such as moulded coal, precomminution, coal damping, more than 6 meters coke oven dry coke quenching gained coke M10≤6.0%.
For solving the problems of the technologies described above, the technical scheme designed by the present invention comprises the steps:
(1) gas-fat coal and rich coal quality is controlled:
Gas-fat coal lgMF >=4.8, rich coal volatile matter≤33%, lgMF >=4.0;
(2) differentiation of weakly caking coking coal:
Will
the coking coal of Y value≤12mm is defined as low rotten weakly caking coking coal; Will
the coking coal of G value≤65 is defined as high rotten weakly caking coal.
(3) application method:
1. low rotten weakly caking coking coal adapted amount≤10%, high rotten weakly caking coking coal > 12%:
Low rotten weakly caking coking coal: 0 ~ 10%; Gas-fat coal: 0 ~ 10%; Rich coal: 10% ~ 25%; Coking coal 38 ~ 42%; 1/3 coking coal: 15% ~ 35%; High rotten weakly caking coking coal: 13 ~ 18%; Wherein: gas-fat coal and rich coal sum are 20% ~ 25%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 13% ~ 28%.
2. low rotten weakly caking coking coal adapted amount > 10%, high rotten weakly caking coking coal≤12%:
Low rotten weakly caking coking coal: 11 ~ 15%; Gas-fat coal 0 ~ 6%; Rich coal: 10% ~ 16%; Coking coal 38 ~ 42%; 1/3 coking coal: 10% ~ 35%; High rotten weakly caking coking coal: 8 ~ 12%; Wherein: gas-fat coal and rich coal sum are 15% ~ 20%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 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%; High rotten weakly caking coking coal: 5 ~ 10%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 20% ~ 25%
First weakly caking coking coal is divided into high rotten weakly caking coking coal and low rotten weakly caking coking coal by the present invention, and by controlling gas-fat coal, the quality of rich coal and the consumption of each single grade coal, finally significantly can improve the adapted amount of weakly caking coking coal, without under the coke making process conditions such as moulded coal, precomminution, coal damping, more than 6 meters coke oven dry coke quenching gained coke M10≤6.0%.
Embodiment
Technical scheme designed by the present invention comprises the steps:
(1) gas-fat coal and rich coal quality is controlled:
Gas-fat coal lgMF >=4.8, rich coal volatile matter≤33%, lgMF >=4.0;
(2) differentiation of weakly caking coking coal:
Will
the coking coal of Y value≤12mm is defined as low rotten weakly caking coking coal; Will
the coking coal of G value≤65 is defined as high rotten weakly caking coal.
(3) application method:
1. low rotten weakly caking coking coal adapted amount≤10%, high rotten weakly caking coking coal > 12%:
Low rotten weakly caking coking coal: 0 ~ 10%; Gas-fat coal: 0 ~ 10%; Rich coal: 10% ~ 25%; Coking coal 38 ~ 42%; 1/3 coking coal: 15% ~ 35%; High rotten weakly caking coking coal: 13 ~ 18%; Wherein: gas-fat coal and rich coal sum are 20% ~ 25%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 13% ~ 28%.
2. low rotten weakly caking coking coal adapted amount > 10%, high rotten weakly caking coking coal≤12%:
Low rotten weakly caking coking coal: 11 ~ 15%; Gas-fat coal 0 ~ 6%; Rich coal: 10% ~ 16%; Coking coal 38 ~ 42%; 1/3 coking coal: 10% ~ 35%; High rotten weakly caking coking coal: 8 ~ 12%; Wherein: gas-fat coal and rich coal sum are 15% ~ 20%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 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%; High rotten weakly caking coking coal: 5 ~ 10%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad 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 in table 2.
Table 1 single grade coal coal analysis result
The specific embodiment of table 2 Coal Blending Schemes
Embodiment 1 ~ 8 gained coke is all under the condition not adopting coal damping, shaped coal technology and precomminution technique, and more than 6 meters, coke oven obtains.
Claims (2)
1. control a blending method for coke abrasive wear resistance, it is characterized in that: the method comprises the steps:
1) control gas-fat coal and rich coal quality as follows:
Degree of mobilization lgMF >=4.8 of gas-fat coal; Degree of mobilization lgMF >=4.0 of rich coal, volatile matter≤33%;
2) differentiation of weakly caking coking coal:
Will
the coking coal of Y value≤12mm is defined as low rotten weakly caking coking coal; Will
the coking coal of G value≤65 is defined as high rotten weakly caking coal;
3) adapted is carried out as follows:
3.1) low rotten weakly caking coking coal adapted amount≤10%, then:
Low rotten weakly caking coking coal: 0 ~ 10%; Gas-fat coal: 0 ~ 10%; Rich coal: 10% ~ 25%; Coking coal 38 ~ 42%; 1/3 coking coal: 15% ~ 35%; High rotten weakly caking coking coal: 13 ~ 18%; Wherein: gas-fat coal and rich coal sum are 20% ~ 25%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 13% ~ 28%;
3.2) low rotten weakly caking coking coal adapted amount > 10%, then:
Low rotten weakly caking coking coal: 11 ~ 15%; Gas-fat coal 0 ~ 6%; Rich coal: 10% ~ 16%; Coking coal 38 ~ 42%; 1/3 coking coal: 10% ~ 35%; High rotten weakly caking coking coal: 8 ~ 12%; Wherein: gas-fat coal and rich coal sum are 15% ~ 20%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 20% ~ 25%.
2. control a blending method for coke abrasive wear resistance, it is characterized in that: the method comprises the steps:
1) control gas-fat coal and rich coal quality as follows:
Degree of mobilization lgMF >=4.8 of gas-fat coal; Degree of mobilization lgMF >=4.0 of rich coal, volatile matter≤33%;
2) differentiation of weakly caking coking coal:
Will
the coking coal of Y value≤12mm is defined as low rotten weakly caking coking coal; Will
the coking coal of G value≤65 is defined as high rotten weakly caking coal;
3) adapted is carried out as follows:
3.1) low rotten weakly caking coking coal adapted amount≤10%, then:
Low rotten weakly caking coking coal: 0 ~ 10%; Gas-fat coal: 0 ~ 10%; Rich coal: 10% ~ 25%; Coking coal 38 ~ 42%; 1/3 coking coal: 15% ~ 35%; High rotten weakly caking coking coal: 13 ~ 18%; Wherein: gas-fat coal and rich coal sum are 20% ~ 25%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 13% ~ 28%;
3.2) low rotten weakly caking coking coal adapted amount > 10%, then:
Low rotten weakly caking coking coal: 11 ~ 20%; Rich coal: 15% ~ 20%; Coking coal 38 ~ 42%; 1/3 coking coal: 10% ~ 30%; High rotten weakly caking coking coal: 5 ~ 10%, low rotten weakly caking coking coal and the height weakly caking coking coal sum that goes bad is 20% ~ 25%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885904A (en) * | 2016-05-04 | 2016-08-24 | 武汉钢铁股份有限公司 | Method for controlling abrasive resistance of coke |
| CN111662735A (en) * | 2020-05-29 | 2020-09-15 | 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 |
| CN101081988A (en) * | 2007-06-29 | 2007-12-05 | 武汉钢铁(集团)公司 | Gas coal joined coking blending method |
| CN101081989A (en) * | 2007-06-29 | 2007-12-05 | 武汉钢铁(集团)公司 | Coal coking blending method |
| CN101649219A (en) * | 2009-09-11 | 2010-02-17 | 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 |
| CN104845650A (en) * | 2015-05-22 | 2015-08-19 | 武汉钢铁(集团)公司 | Coking coal blending method for controlling M10 index of cokes |
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2015
- 2015-09-02 CN CN201510559282.3A patent/CN105131995B/en active Active
Patent Citations (6)
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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 |
| CN101081988A (en) * | 2007-06-29 | 2007-12-05 | 武汉钢铁(集团)公司 | Gas coal joined coking blending method |
| CN101081989A (en) * | 2007-06-29 | 2007-12-05 | 武汉钢铁(集团)公司 | Coal coking blending method |
| CN101649219A (en) * | 2009-09-11 | 2010-02-17 | 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885904A (en) * | 2016-05-04 | 2016-08-24 | 武汉钢铁股份有限公司 | Method for controlling abrasive resistance of coke |
| CN105885904B (en) * | 2016-05-04 | 2018-10-16 | 武汉钢铁有限公司 | A method of control coke wear-resistant strength |
| CN111662735A (en) * | 2020-05-29 | 2020-09-15 | 鞍钢股份有限公司 | Coking and coal blending method for preparing metallurgical coke by using waste plastics |
| 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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Effective date of registration: 20170801 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Applicant after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Applicant before: Wuhan Iron & Steel (Group) Corp. |
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