CN104109548B - The coke making and coal blending method that fluidity >=1000ddpm bottle coal participates in - Google Patents
The coke making and coal blending method that fluidity >=1000ddpm bottle coal participates in Download PDFInfo
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- CN104109548B CN104109548B CN201410310897.8A CN201410310897A CN104109548B CN 104109548 B CN104109548 B CN 104109548B CN 201410310897 A CN201410310897 A CN 201410310897A CN 104109548 B CN104109548 B CN 104109548B
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Abstract
The invention discloses the coke making and coal blending method that the bottle coal of a kind of maximum fluidity >=1000ddpm participates in, including detecting each coking coal process performance index and determining each single coking step by weight percentage, finally determine maximum fluidity >=1000ddpm, volatile matter > 37.0%, the adapted amount of the bottle coal of G > 80 is 25～30%.The present invention makes full use of the maximum fluidity >=1000ddpm of bottle coal 1#, has the characteristic of certain fluidity, in coal-blending coking, selected specific 1/3 coking coal, can by this character bottle coal Substitute For Partial or whole rich coal adapteds, thus saving quality fertilizer coal resource；Again owing to this character bottle coal single grade coal coking isotropic structure and inertia structure are low, Coke Quality impact is little, therefore, it is possible to use the coking coal that quality is relatively poor.
Description
Technical field
The invention belongs to technical field of coal chemical industry, be specifically related to the coke making and coal blending method that the bottle coal of a kind of maximum fluidity >=1000ddpm participates in.
Background technology
According to GB5751-2009 " China's coking coal classification " national standard, bottle coal can divide bottle coal 34#, four trades mark of 43#, 44# and 45#, mainly distinguishes with volatile matter and G-value.Work as volatile matter > 28.0～37.0, G-value > 50～65, for bottle coal 34#；Work as volatile matter > 37.0%, G-value > 35, respectively bottle coal 43#, 44#, 45#.Different trade mark bottle coal atures of coal differ greatly, and adapted difference is also big.Generally believing that bottle coal does not have mobility at present, generally as coking center, other coking coal is around its coking, therefore, domestic most large-scale steel mill coal chemical enterprise, for meeting coke quality requirement needed for large blast furnace, bottle coal adapted amount is generally relatively low, is normally controlled within 10%.
Newly produce the bottle coal of a kind of maximum fluidity >=1000ddpm at present, the volatile matter of this bottle coal > 37.0%, G > 80, maximum fluidity >=1000ddpm due to this bottle coal, there is certain mobility, not as coking center in coal blending, can with some other fluidity of coking coal co-controlling mixed coal with certain fluidity, the fluidity of mixed coal is unsuitable too high also unsuitable too low；If still controlling adapted by prior art, the bottle coal of maximum fluidity >=1000ddpm is not involved in mixed coal fluidity and controls, and easily makes prediction mixed coal fluidity on the low side, and actual value is higher, finally affects coke quality and controls.
Summary of the invention
The technical problem to be solved is to provide a kind of maximum fluidity >=1000ddpm, volatile matter > 37.0%, the coke making and coal blending method that the bottle coal of G > 80 participates in, with such bottle coal resource of Appropriate application, reduces coal blending cost, improves coke quality.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
The coke making and coal blending method that the bottle coal of a kind of maximum fluidity>=1000ddpm participates in, including the step detecting each coking coal process performance index, by maximum fluidity>=1000ddpm, volatile matter>37.0%, the bottle coal of G>80 is designated as bottle coal 1#,<bottle coal of 1000ddpm is designated as bottle coal 2# to maximum fluidity, and each single coking coal is by weight percentage: bottle coal 1#:25～30%；1/3 coking coal: 15～30%；Rich coal: 0～10%；Coking coal: 35～40%；Lean coal: 5～15%；G >=85 of described 1/3 coking coal, volatile matter (Vdaf)≤33%, maximum fluidity MF >=3000ddpm, coking coarse grain mosaic texture is more than 40%；85 > G >=80 of described coking coal, coking coarse grain mosaic texture 50～60%.
Further, described each single coking coal is by weight percentage: bottle coal 1#:25～30%；1/3 coking coal: 16～22%；Rich coal: 0～5%；Coking coal: 35～40%；Lean coal: 5～10%.
The present invention makes full use of the maximum fluidity >=1000ddpm of bottle coal 1#, has the characteristic of certain fluidity, in coal-blending coking, selected specific 1/3 coking coal, can by bottle coal 1# Substitute For Partial or whole rich coal adapteds, thus saving quality fertilizer coal resource；Again owing to bottle coal 1# single grade coal coking isotropic structure and inertia structure are low, Coke Quality impact is little, therefore, it is possible to use the coking coal that quality is relatively poor, under the process conditions without graded crushing, briquetting process or tamping coking, the adapted amount of bottle coal 1# is reached as high as 30%, the rich coal amount of allocating into≤10%, and 85 > G >=80 of coking coal, the amount of allocating into is not higher than 40%, significantly reduce coal blending cost, more than 6 meters top dress coke oven dry coke quenching CSR >=65.0%.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further detailed explanation.
The coke making and coal blending method that the bottle coal of a kind of maximum fluidity>=1000ddpm of the present invention participates in, including the step detecting each coking coal process performance index, by maximum fluidity>=1000ddpm, volatile matter>37.0%, the bottle coal that the bottle coal of G>80 is designated as is designated as bottle coal 1#,<bottle coal of 1000ddpm is designated as bottle coal 2# to maximum fluidity, and each single coking coal is by weight percentage: bottle coal 1#:25～30%；1/3 coking coal: 15～30%；Rich coal: 0～10%；Coking coal: 35～40%；Lean coal: 5～15%；G >=85 of described 1/3 coking coal, volatile matter (Vdaf)≤33%, maximum fluidity MF >=3000ddpm, coking coarse grain mosaic texture is more than 40%；85 > G >=80 of described coking coal, coking coarse grain mosaic texture 50～60%.
Each single grade coal coal analysis result is in Table 1, and the specific embodiment of each Coal Blending Schemes is in Table 2.
Table 1 single grade coal coal analysis result
Embodiment 1-3 and comparative example 1-2 is in Table 2.
The specific embodiment of table 2 Coal Blending Schemes and comparative example
Embodiment 1-3 and comparative example 1-2 gained coke are all when being provided without coal damping, shaped coal technology and precomminution technique, and more than 6 meters, coke oven prepares.Comparative example 1 is compared with embodiment 1, embodiment 1 bottle coal is all bottle coal 1#, and bottle coal is all bottle coal 2# in comparative example 1, owing to bottle coal 2# does not have mobility, after vast scale adds, after the reaction of gained coke, calorific intensity (CSR) is 61%, has marked difference with the hot property of embodiment 1, and this coke strenth does not reach instructions for use.Comparative example 2 is compared with embodiment 3, instead of the rich coal of 6% in embodiment 3 with bottle coal 1# after, after the reaction of gained coke, calorific intensity (CSR) is suitable with comparative example 2, it is seen that bottle coal 1# has certain fluidity, in Blending can part substituting fat, reach excellent fit effect energy.
Claims (2)
1. the coke making and coal blending method that the bottle coal of maximum fluidity>=1000ddpm participates in, it is characterized in that: include detecting the step of each coking coal process performance index, by maximum fluidity>=1000ddpm, volatile matter>37.0%, the bottle coal of G>80 is designated as bottle coal 1#,<bottle coal of 1000ddpm is designated as bottle coal 2# to maximum fluidity, and each single coking coal is by weight percentage: bottle coal 1#:25～30%；1/3 coking coal: 15～30%；Rich coal: 0～10%；Coking coal: 35～40%；Lean coal: 5～15%；G >=85 of described 1/3 coking coal, volatile matter≤33%, maximum fluidity MF >=3000ddpm, coking coarse grain mosaic texture is more than 40%；85 > G >=80 of described coking coal, coking coarse grain mosaic texture 50～60%.
2. the coke making and coal blending method that the bottle coal of maximum fluidity >=1000ddpm according to claim 1 participates in, it is characterised in that: described each single coking coal is by weight percentage: bottle coal 1#:25～30%；1/3 coking coal: 16～22%；Rich coal: 0～5%；Coking coal: 35～40%；Lean coal: 5～10%.
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| CN104330542B (en) * | 2014-11-10 | 2016-04-20 | 武汉钢铁(集团)公司 | Height based on charred coal organization structure goes bad the coal property evaluation of coking coal and application method |
| CN104479708B (en) * | 2014-11-14 | 2016-06-29 | 武汉钢铁(集团)公司 | The regulation and control method of coke strenth |
| CN105713634A (en) * | 2015-11-06 | 2016-06-29 | 广东韶钢松山股份有限公司 | Coal blending method for producing high-quality coke by high-proportion matched use of lean coal and gas coal |
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| CN102559227B (en) * | 2010-12-10 | 2014-03-19 | 上海梅山钢铁股份有限公司 | Method for coal blending coking through utilizing Gieseler fluidity index |
| 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 |
| CN102618310B (en) * | 2012-04-18 | 2013-12-18 | 武汉钢铁(集团)公司 | Coking and coal blending method with participation of gas coal |
| CN102690670B (en) * | 2012-05-23 | 2013-10-09 | 武汉钢铁(集团)公司 | Coal blending and coking method with participation of 1/3 coking coal having volatile of 28-32% |
| CN102994129B (en) * | 2012-12-03 | 2014-04-30 | 广东韶钢松山股份有限公司 | Gas coal blended coking blending coal and preparation method thereof |
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Effective date of registration: 20170725 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
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