磷石膏在建筑材料领域的应用研究进展OA

Phosphogypsum is a bulk solid waste produced in phosphorus chemical industry,which has the characte-ristics of large yield and complex composition.The traditional stacking and discharging method not only occupies a lot of land resources,but also easily causes negative impact on the environment.Therefore,how to realize the resource utilization of phosphogypsum solid waste has become an important issue concerned by the industry.In recent years,the application of phosphogypsum in the field of building materials has made remarkable progress.In this paper,the physical and chemical properties of phosphogypsum are analyzed,and the current situation of resource utilization of phosphogypsum in building cementitious materials,gypsum blocks,gypsum plates,cement,cement retarder and oth-er building materials are reviewed.The research direction of resource utilization of phosphogypsum is prospected.In the future,it is necessary to further strengthen the purification and modification of phosphogypsum technology research,continuously improve the performance of phosphogypsum based building materials products,expand its ap-plication range,and improve the comprehensive utilization level of phosphogypsum.