Abstract: Carbide slag was used as a highly effective low price desulfurizing absorbent，and the physical properties were analyzed. Carbide slag has a high CaO contents and high specific surface area. Hydrated carbide slag and lime were mixed，and the product had good flowability. At the mixing ratio of 1∶1.4，the product had the best desulfurization performance. Under the same flue gas condition，the compound absorbent had better desulfurization characteristics than other commonly used desulfurization agents of CaO and Ca(OH)2.

摘要： 为高效、廉价地将电石渣利用于烟气脱硫中，详细分析了电石渣的物理性质，其具有较高的CaO含量和比表面积。将含水量为32%的电石渣与生石灰进行配比均化，得到的产物具有较好的流动性，且质量配比为1∶1.4时复合脱硫剂的脱硫性能最好。在同等Ca/S和烟气条件下，复合脱硫剂较CaO、Ca(OH)2等常用半干法脱硫剂有更好的脱硫性能。