磷石膏综合利用现状评述

磷石膏综合利用现状评述
磷石膏综合利用现状评述
杨兆娟 ．向兰
(1．青海大学化工学院，青海西宁810016；2．清华大学化工系，北京市绿色反应工程与工艺重点实验室)
摘要：磷石膏是磷复肥生产过程中的副产物，随着中国磷复肥工业的迅猛发展，磷石膏的处理已成为一个迫
在眉睫的环保和安全问题，磷石膏综合利用对于提高磷复肥生产厂家的经济效益及其周边环境的治理具有不可估
量的潜在价值。评述了国内外磷石膏综合利用状况，根据磷石膏中影响其制品性能的物质特性，采用不同方法对
原料进行预处理，确定其合理利用途径，重点介绍了磷石膏在水泥工业和石膏胶凝材料生产中的应用，以及在化肥
工业中利用磷石膏二步法制取硫酸钾的优越性。通过分析磷石膏综合利用技术现状，为磷石膏资源的高度利用提
供一些可供参考的技术资料。
关键词：磷石膏；综合利用；水泥；石膏；硫酸钾
中圈分类号：TQ126．39 文献标识码：A 文章编号：1006—4990(2007)01—0008—03
Review of comprehensive utilization of phosphogypsum
Yang Zhaojuan -Xiang Lan
(1．College ofChemicalEngineering，Qinghai Unwe~Sy。QinghaiXining 810016，Ch／na；
2．Department ofChemical EngineeringlT,inghua University)
Abstract：Phosphogypsum is a kind of by—product of phosphate fertilizer industry，with the rapid development of
phosphate fertilizer industry in China，it becomes critical environmental protection and safety problem for the disposition of
phosphogypaum，the comprehensive utilization of phosphogypsum has potential value for raising the economic benefits and
disposing environment of the phosphate fertilizer plant．This paper reviewed the comprehensive utilization for phosphogypsum
at home and abroad．According to the characteristic of the products made by phosphorousgypsum，the diferent pretreatment
ways were employed to dispose mw material-and the reasonable utilization methods were determined．Th is article introduces
the application of phosphogypsum in cement industry an d gypsum paster material and also describes the superiority of manufacturing
potassium sulfate from phosphogypsum by two—step way．
Key words：phosphogypsum；comprehensive utilization；cement；gypsum；potassium sulfate