The Study On Coal Petrographic Blending Of KAILUAN Coking Coal

In recent years, the blending of coal petrology technology was accorded wideranging emphasis. If want to make the blending of coal petrology technology apply to production practice better, the coking properties of coal maceral and the relationship between the active component and inert component from the perspective of anthracology must be grasped to find out the best activity and inert rate.Five coking coals with different ranks were studied, including Donghuantuo gas coal,Bagang fat coal, Hongsheng coking coal, Lvjiatuo coking coal and Gudong lean coal.The vitrinite of coal samples was enriched using the centrifugal separation by zincchloride density solution as active component. Then, added into them with different proportions of standard anthracite as inert component. The coke-CO₂ solution loss reaction process and coke microlite structure was studied. The relationship among coke solution loss reaction index(r_max, T_s etc.), activation energy?E?, microlite structure parameters(L_a, L_c, d₀₀₂) and the best activity and inert rate were investigated.The research results showed that, as the change of the best activity and inert rate, the optimal ranges of coke solution loss reaction index, the reaction activation energy and microlite structure parameters were turned up. The best activity and inert rate in different coking coal was find out. The curve of the fitting will play important role in classifying coking coals reasonably and guiding the coal blending and coking.