Method for evaluating coal quality of coking coal having largest Gieseler fluidity of 2000ddpm or less
A technology with 2000ddpm and Gibraltar fluidity, applied in the direction of material inspection products, fuel oil testing, etc., can solve the problems of large differences in coking coal quality evaluation, inability to accurately match, and inability to select cost-effective coking coal scientifically and rationally, so as to reduce thermal performance The effect of volatility
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[0016] The present invention will be further described in detail through specific embodiments below.
[0017] The coking coal blending ratio of an enterprise is 40%, the dry basis ash content of the coking coal is ≤9.00%, and the sulfur content is ≤0.6%. The specific coal blending plan is:
[0018] Coking coal: 40%; fat coal: 15%; 1 / 3 coking coal: 26%; gas fat coal: 5%; lean coal: 14%.
[0019] Fat coal, 1 / 3 coking coal, gas fat coal and lean coal remain unchanged, and five groups of different coking coals are taken, and coal blending is carried out according to the above proportions, and the coke strength after thermal reaction (CSR) is obtained. The relevant data are shown in Table 1 .
[0020] Table 1 The strength of coke after thermal reaction of different coking coals after coal blending
[0021] coal sample
X 1 / %
X 2 / %
MF / ddpm
b / %
CSR / %
Coking coal 1#
62
0
1278
36
65.24
Coking coal 2#
71
2
88...
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