摘要
本文介绍了以高岭土为原料制备高效聚合氯化铝混凝剂的方法。研究了焙烧温度、焙烧时间以及盐酸浓度、酸浸时间等条件的影响 ,确定了制备聚合氯化铝混凝剂的条件 :高岭土于 65 0℃～80 0℃焙烧 2 0～ 2 5小时 ,常压下 10 0℃时用 15 %～ 2 0 %的盐酸浸取 2 0～ 3 0小时 ;矿粉投加比 1 0～1 5。制得聚合氯化铝 ,其Al2 O3 含量 12 46% ,Fe2 O3含量 0 3 1% ,密度 1 2 87g/cm3,碱化度 5 5 6%。
A new technology of producing polymeric aluminum chloride coagulant from kaolin has been presented in this paper.The influence of process parameters such as roasting temperature?roasting time?concentration of hydrochloric acid?time of acid immersion are studied,the conditions of producing PAC are determined:The kaolin roasts in 650℃～800℃ for 2 0～2 5 hours;then is immersed 15%～20% hydrochloric acid for 2～3 hours at 100℃ in normal pressure;the proportion of kaolin to acid is 1 0∶1 0～1 5.The coagulant contains Al 2O 3 12 46%,Fe 2O 3 0 31%,density 1 287g/cm 3,alkalinity 55 6%.
出处
《中国矿业》
北大核心
2003年第7期54-56,共3页
China Mining Magazine
