通过分析南钢炼焦煤的煤岩性质和40 kg试验焦炉所炼焦炭抗碎强度，确定了基于炼焦煤镜质组最大反射率的活性权函数方程，根据其活性权函数对各炼焦煤的活惰比进行了计算，得出焦炭抗碎强度[M40]最大时所对应的活惰比为2.53，即为南钢用煤的最佳活惰比。以最佳活惰比为目标，优化配煤，预测焦炭质量，从而为科学便捷地确定配煤比提供技术依据。同时对非炼焦煤进行改性，使非炼焦煤具有一定的活性，非炼焦煤在炼焦中的配加量达到10%以上，炼制合格的焦炭。

Through the analysis of the coal and rock properties of coking coal， and testing the coke crushing strength in the 40 kg coke oven， the study identified the reactive weight function based on the coking coal vitrinite maximum reflectivity. The reactive-inert component radio of coking coal base on the active weight function was calculated， and it is concluded that the reactive-inert component radio correspond to the maximum crushing strength of coke. As the result of experiment analysis and calculation， the value of best reactive-inert component radio is 2.53. Aiming to reach the best reactive-inert component radio， the study optimized the ratio of mixing coal， predicted the coke quality， and provided technical basis to determine coal blending ratio conveniently. At the same time， modification of non-coking coal makes the non- coking coal contain certain activity， and the optimal proposal of coal blending of non-coking coal can add up to 10% at least， be helpful to get qualified coke.