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用磷石膏制备高附加值的磷石膏晶须,不仅能提高磷石膏的开发利用率,还可节省植物纤维和天然矿物原料。本文介绍磷石膏从加工预处理到制备石膏晶须的工艺方法。将磷石膏晶须应用于造纸中的主要方向是:部分替代植物纤维、做纸张填料以及做涂布颜料。
Phosphogypsum preparation of high value-added phosphogypsum whisker, not only can improve the utilization of phosphogypsum, but also save plant fiber and natural mineral raw materials. This article describes the process of preparation of gypsum whisker from phosphogypsum pretreatment. The main directions for applying phosphogypsum whiskers to papermaking are: Partially replacing plant fibers, making paper and coating pigments.