The invention discloses a
coal blending method for preparing high-activity high-strength
coke. The
coal blending method comprises a step of blending coking
coal, wherein the coking coal participating in
coal blending comprises the following components in percentage by weight: 20 to 70 percent of Xinjiang strongly
caking coal, and the balance of one or a mixture of more of charred coal, lean coal,fat coal, gas coal and 1 / 3 charred coal; and after blending, the air-dried
moisture is 1.0 to 1.7 percent, the
dry basis ash is 8 to 12 percent, the
dry basis volatile is 22 to 26 percent, the sulfurcontent is less than 0.6 percent, the
caking index is 82-100, the maximum value of Gieseler fluidity is 1.9-3.0, the average value of
vitrinite reflectance is 1.1 to 1.4 percent, and in the dry basisash, CaO is 10 to 15 percent, Fe2O3 is 9 to 15 percent and MgO is 3 to 5 percent. In the method, the strongly
caking coal produced in Xinjiang and considered to be poor traditionally is effectively utilized, the advantages of high caking property, low ash, low
sulfur, cheapness and
high availability of the strongly caking coal are exerted, and the high-activity high-strength
coke is produced at low cost for blast furnaces.