利用磷石制造建筑石膏的研究

通过水洗净化法、石灰水中和法、生石灰中和法等多种方法对磷石膏加以处理，试图探讨不经水洗制造性能良好的建筑石膏的途径，研究结果表明，生石灰中和法工艺简单，可制成一级建筑石膏。

A Study on Plaster of Paris Made from Phosphogypsum

This paper deals with the purification of phosphogypsum by some processing such as washing with water, washing with lime milk, neutralization with lime and so on. It also covers the way to make plaster of Paris having good properties without washing. The result shows that the process of neutralization with lime is simple and the treated phosphogypsum can be used to produce the first grade of plaster.