Preparation of the foundry formed coke by gas coal and coke powder

Based on the relative abundant occupation of the gas coal in the coking coal reserves of China,the gas coal was used for the main coking component and the coke powder as the leaning agent,by the addition of pitch binder,various of coal blending schemes were investigated to obtain a first-level foundry formed coke in the optimal mass ratio of 45∶50∶5.The results showed that the crushing strength and the porosity of the coke were improved by the reduction of the blending proportion of the gas coal and the pitch.And the effect of the reduction addition of the pitch on the coke strength was rather significant than the gas coal,whereas it exerted less influence than the gas coal on the coke porosity.