Abstract:

Through 40kg small coke oven test, the relationship between coal petrographic indexes (CBI and IS) and coke indexes M25 and CSR is studied. The test shows that the relativities between the average reflectivity R and mechanical strength M25 and CSR are obvious. The coal petrographic index can not only predict the mechanical strength and CSR of coke, but also can make it approach optimized coal blending ratio through the adjustment of CBI value. In order to reduce the using amount of major coking coal and lower the costs of coal blending and cokemaking, a new way is developed.