Abstract:

This paper described a pre-crushing for individual coal fineness by using 70kg testing coke oven and CDQ to determine the coal category to be pre-crushed and optimum fineness range with precondition of ensuring the hot strength of the coke.The research shows that with increasing of the coal fineness,the hot strength of the coke also varies with different fineness of lean coal and gas coal and when the fineness of crushed coal is controlled around 60%,the bulk density of the blended coal increases,which could benefit the output and quality of the coke.