磷石膏结晶特征与磷矿物性状

Phosphogypsum Crystallization Characteristic and Phosphorite Property

对全国所有磷矿的(二水)磷石膏结晶晶形进行了研究,认为:不同磷矿物具有不同的磷石膏结晶特征,因此,萃取磷酸已不再是H3PO4,磷石膏也不再是CaSO4·2H2O,磷石膏结晶无晶核生成和晶核成长过程;反应温度、结晶时间和工艺流程并不影响二水磷石膏结晶。

The phosphogypsum crystal form of all phosphorites (dehydrate) in China is studied.It is considered that different phosphorites have different phosphogypsum crystal characteristics.Therefore,the extracted phosphoric acid is not H3PO4 any more,and phosphogypsum is not CaSO4·2H2O.The phosphogypsum no crystal nucleus generation and crystal nucleus growth process,reaction time,crystallization time and process flow will not affect the dehydrate phosphogypsum crystallization.