A type of calcium coke was developed for use in the oxy-thermal process of calcium carbide production. The calcium coke was prepared by the co-pyrolysis of coking coal and calcium carbide slag, which is a solid waste generated from the chlor-alkali industry. The characteristics of the calcium cokes under different conditions were analyzed experimentally and theoretically. The results show that the thermal strength of calcium coke increased with the increase in the coking coal proportion, and the waterproof property of calcium coke also increased with increased carbonation time. The calcium coke can increase the contact area of calcium and carbon in the calcium carbide production process. Furthermore, the pore structure of the calcium coke can enhance the diffusion of gas inside the furnace, thus improving the efficiency of the oxy-thermal technology.

已开发出一种类型的钙焦，用于电石生产的氧热法。焦炭是通过焦煤和电石渣的共热解法制备的，电渣是氯碱工业产生的固体废物。通过实验和理论分析了不同条件下钙焦的特性。结果表明，随着焦煤比例的增加，焦炭的热强度也随之增加；随着炭化时间的延长，焦炭的防水性能也随之提高。钙焦可增加电石生产过程中钙和碳的接触面积。此外，钙焦的孔结构可以增强炉内气体的扩散，