Method for establishing lean coal quality evaluation model
An evaluation model and technology for lean coal, applied in the field of coal chemical industry, can solve problems such as large differences in coke formation structure, inability to better evaluate the characteristics of lean coal coal quality, and inability to accurately characterize the influence of coke quality, so as to reduce the fluctuation range of thermal properties Effect
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[0016] The present invention will be described in further detail below in conjunction with specific embodiments.
[0017] The proportion of lean coal in an enterprise is 15%. The dry basis ash content of the lean coal is ≤9.50%, and the sulfur content is ≤0.6%. The coal blending plan is as follows:
[0018] Gas fat coal: 10%; 1 / 3 coking coal: 30%; fat coal: 10%; coking coal 1#: 25%; coking coal 2#: 10%; lean coal: 15%; 85. Coking coal with a coke-forming coarse-grain mosaic structure ratio ≥ 60%, and the coking coal 2# is coking coal with a G value of 80-85 and a coke-forming coarse-grain mosaic structure ratio of 50-60%.
[0019] Gas fat coal, fat coal, coking coal 1#, coking coal 2#, and 1 / 3 coking coal remain unchanged, and lean coal from three groups of different mining sites of the enterprise is taken (the G values of lean coal 1#, 2#, and 3# are respectively 25, 40, 55), carry out coal blending and coking according to the above proportions, obtain the strength of coke...
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