电解锰渣替代石膏生产水泥的试验研究

Experiments on Producing Cement by Use Electrolytic Manganese Slag as the Subsitute for Gypsum

电解锰渣为含CaSO4·2H2O较高的工业废料,如果加以利用,将获得较好的经济效益与社会效益。实验将锰渣分别进行105℃低温烘干和300℃高温锻烧处理,然后替代石膏配制水泥试验并按国家标准检测方法进行相关水泥性能试验。结果表明,电解锰渣的缓凝作用虽差于天然石膏,但可完全替代天然石膏生产水泥;且高温锻烧处理的电解锰渣的缓凝和增强作用,均好于低温烘干料。

Electrolytic manganese slag is a kind of industry waste with high content of CaSO4·2H2O, and if be utilized comprehensively, it will bring considerable eeomomie benefit and Social benefit. In the experiments, the raw electrolytic manganese slags were dried at 105 ℃ and calcined at a higher temperature of 300 ℃ respectively, and then replaced gypsum to produce cement. The results of the performaee test of the produced cement show that the manganese slag can replace the gypsum completely in the cement production though its slow-setting action is weaker than that of the gypsum and furthermore, the slow-setting effect of the calcined electrolytic manganese slag is better than that of the dried.