The chemical pretreatment of phosphogypsum with a lime milk solution as a neutralizer, which is often recommended in literature, was not so ideal as the former.

• 石灰溶液中和法虽是常推荐使用的磷石膏预处理方法，但与柠檬酸溶液预处理法相比，石灰中和磷石膏作缓凝剂的效果并不理想。