With change of calcium sulfate shape and reduce of compact degree of coat layer on phosphate rock, the velocity of second stage reaction of SSP is accelerated by active...

• 活化添加剂促进酸矿反应的重要途径是改变硫酸钙结晶的晶习,减弱硫酸钙对磷矿包裹的致密程度,特别表现为对第二阶段的反应十分有利;