某钙基膨润土制活性白土和有机膨润土试验研究

摘要

辽宁某膨润土为优质钙基膨润土，主要成分为绿脱石，其次为蒙脱石，杂质含量较低。试验以该膨润土为原料，对其进行了活化、有机化试验研究。研究表明，在活化酸度20％、活化时间4 h的条件下，可制备出脱色率达到99．3％的高效活性白土；采用适宜流程，在温度60℃、浆料浓度5％、有机化时间1 h及覆盖剂用量35％的条件下，制备出的有机膨润土在0号柴油中胶体率达到98％，表观粘度8．75 mPa・ S，性能较佳。%A bentonite in Liaoning Province is high quality calcium -group bentonite , main compo-nent is montmoronite and impurity content is low .Taking bentonite clay as raw material , the activa-tion, organification and other experiments were carried about .The high quality activated bleaching clay was made of bentonites on the condition of acidity 20%, activation time over 4h.The decolo-ring ratio can reach 99 .3%.The excellent organic bentonite preparation was fulfilled under the con-dition of temperature 60℃, slurry concentration 5%, organising time 1hour and dosage of covering agent 35%by using appropriate flowsheet .The colloid ratio can reach 98%and the apparent vis-cosity can reach 8.75 mPa・ S in the 0#diesel oil.