Experiments show that causticizing by adding a small quantity of slaked lime can eliminate the interference of carbonate ions and humic acid salts.

添加少量的熟石灰可即刻消根和腐植盐等有杂质的影响。

A new technology for producing PCC directly in the causticizing stage is reported in this paper.

介绍了化工段直接生产沉淀钙的新技术。