CN104109548A - Coking and coal blending method participated by gas coal with fluidity of no less than 1000 ddpm - Google Patents
Coking and coal blending method participated by gas coal with fluidity of no less than 1000 ddpm Download PDFInfo
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- CN104109548A CN104109548A CN201410310897.8A CN201410310897A CN104109548A CN 104109548 A CN104109548 A CN 104109548A CN 201410310897 A CN201410310897 A CN 201410310897A CN 104109548 A CN104109548 A CN 104109548A
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Abstract
The invention discloses a coking and coal blending method participated by gas coal with fluidity of no less than 1000 ddpm. The method comprises a step of detecting each coking coal processing property index and a step of determining the weight percentage of each coke; it is eventually determined that the blending amount of gas coal with maximum fluidity of no less than 1000 ddpm, volatile compounds of greater than 37.0% and G of greater than 80 is 25 to 30%. According to the invention, the characteristics of maximum fluidity of no less than 1000 ddpm and certain fluidity of the gas coal No. 1 is fully utilized, specific 1/3 coking coal is selected in the process of coal blending and coking, and the gas coal can partially or totally replace fat coal, so the resource of high-quality fat coal is saved; since the coking isotropic structure and inertial structure of a single coal of the gas coal with such characteristics are low, influence on coke quality is small, and thus, coking coal with poor quality can be used.
Description
Technical field
The invention belongs to technical field of coal chemical industry, be specifically related to the coke making and coal blending method of the bottle coal participation of a kind of maximum fluidity >=1000ddpm.
Background technology
According to GB5751-2009 " Chinese coking coal classification " national standard, bottle coal can divide bottle coal 34#, 43#, 44# and tetra-trades mark of 45#, mainly distinguishes with volatile matter and G value.When volatile matter >28.0～37.0, G value >50～65, are bottle coal 34#; As volatile matter >37.0%, G value >35, is respectively bottle coal 43#, 44#, 45#.Different trade mark bottle coal atures of coal differ greatly, and adapted difference is also large.Generally believe that at present bottle coal does not have mobility, generally as coking center, other coking coal is around its coking, therefore, domestic most large-scale steel mill coal chemical enterprise, for meeting in the required coke quality requirement of large blast furnace, bottle coal adapted amount is generally lower, is conventionally controlled in 10%.
Newly exploit out at present the bottle coal of a kind of maximum fluidity >=1000ddpm, the volatile matter >37.0% of this bottle coal, G>80, due to the maximum fluidity >=1000ddpm of this bottle coal, there is certain mobility, in coal blending, not as coking center, can have with some other degree of mobilization of the coking coal co-controlling mixed coal of certain degree of mobilization, the degree of mobilization of mixed coal is unsuitable too high also unsuitable too low; If still, by prior art control adapted, the bottle coal of maximum fluidity >=1000ddpm does not participate in the control of mixed coal degree of mobilization, easily make to predict that mixed coal degree of mobilization is on the low side, and actual value is higher, finally affects coke quality control.
Summary of the invention
Technical problem to be solved by this invention 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, rationally to utilize such bottle coal resource, reduce coal blending cost, improve coke quality.
For solving the problems of the technologies described above, 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, comprise the step that detects 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#, the bottle coal of maximum fluidity <1000ddpm is designated as bottle coal 2#, and each single coking coal of planting 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 (V
daf)≤33%, maximum fluidity MF>=3000ddpm, coking coarse grain pattern structure is more than 40%; 85 > G>=80 of described coking coal, coking coarse grain pattern structure 50～60%.
Further, described each single coking coal of planting 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 make full use of bottle coal 1# maximum fluidity >=1000ddpm, there is the characteristic of certain fluidity, in coal-blending coking, selected specific 1/3 coking coal, can be by bottle coal 1# Substitute For Partial or whole rich coal adapteds, thereby save quality fertilizer coal resource; Again due to mono-kind of coal coking isotropic structure of bottle coal 1# and inertia structure low, Coke Quality impact is little, therefore, can the relatively poor coking coal of functional quality, under the processing condition without graded crushing, moulded coal technique or tamping coking, adapted amount to bottle coal 1# reaches 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, 6 meters are pushed up dress coke oven dry coke quenching CSR >=65.0% above.
Embodiment
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, comprise the step that detects 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#, the bottle coal of maximum fluidity <1000ddpm is designated as bottle coal 2#, and each single coking coal of planting 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 (V
daf)≤33%, maximum fluidity MF>=3000ddpm, coking coarse grain pattern structure is more than 40%; 85 > G>=80 of described coking coal, coking coarse grain pattern structure 50～60%.
Each single coal coal analysis of planting the results are shown in Table 1, and the specific embodiment of each Coal Blending Schemes is in table 2.
The single coal coal analysis result of planting of table 1
Embodiment 1-3 and comparative example 1-2 are 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 not all adopting under the condition of coal damping, shaped coal technology and precomminution technique, and more than 6 meters, coke oven makes.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, due to bottle coal, 2# does not have mobility, after vast scale adds, hot strength after the reaction of gained coke (CSR) is 61%, has marked difference with the thermal characteristics of embodiment 1, and this coke strenth does not reach service requirements.Comparative example 2 is compared with embodiment 3, in embodiment 3, substituted after 6% rich coal with bottle coal 1#, hot strength after the reaction of gained coke (CSR) is suitable with comparative example 2, and visible bottle coal 1# has certain fluidity, can part substituting fat in Blending, reach excellent fit effect energy.
Claims (2)
1. the coke making and coal blending method that the bottle coal of a maximum fluidity >=1000ddpm participates in, it is characterized in that: comprise the step that detects 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#, the bottle coal of maximum fluidity <1000ddpm is designated as bottle coal 2#, and each single coking coal of planting 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 pattern structure is more than 40%; 85 > G >=80 of described coking coal, coking coarse grain pattern structure 50～60%.
2. the coke making and coal blending method that the bottle coal of maximum fluidity >=1000ddpm according to claim 1 participates in, is characterized in that: described each single coking coal of planting 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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| CN104109548B CN104109548B (en) | 2016-06-29 |
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| CN104330542A (en) * | 2014-11-10 | 2015-02-04 | 武汉钢铁(集团)公司 | Coal quality evaluating method and distributing method of highly-metamorphic coking coal based on coke optical texture structure |
| CN104479708A (en) * | 2014-11-14 | 2015-04-01 | 武汉钢铁(集团)公司 | Coke strength regulation method |
| 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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| 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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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. |