磷石膏中杂质存在状况及杂质去除技术综述
Review of the State of Impurity Occurrences and Impurity Removal Technology in Phosphogypsum.
作者信息
Li Xu, Lv Xinfeng, Xiang Lan
机构信息
Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
出版信息
Materials (Basel). 2023 Aug 15;16(16):5630. doi: 10.3390/ma16165630.
Abstract
A variety of co-existing impurities in phosphogypsum limit its large-scale and high-value utilization. This paper summarizes the common contents of major impurity components (silicon and phosphorus) and trace impurity components (fluorine, iron, aluminum, and carbon) in phosphogypsum and discusses the harm of impurity components to the comprehensive utilization of harmless phosphogypsum chemical resources. The occurrence status of impurity components in phosphogypsum and the research progress of various impurity removal technologies are summarized, and the effects of these impurity removal technologies on different contents of impurity components are evaluated. On this basis, the goal of improving the whiteness of phosphogypsum samples and the development of technology for further removal of impurities in phosphogypsum to improve the purity of the main content of calcium sulfate are speculated.
摘要
磷石膏中多种共存杂质限制了其大规模高值利用。本文总结了磷石膏中主要杂质成分（硅和磷）以及痕量杂质成分（氟、铁、铝和碳）的常见含量，并探讨了杂质成分对磷石膏无害化化学资源综合利用的危害。总结了磷石膏中杂质成分的赋存状态及各种除杂技术的研究进展，并评估了这些除杂技术对不同含量杂质成分的去除效果。在此基础上，推测了提高磷石膏样品白度的目标以及进一步去除磷石膏中杂质以提高硫酸钙主要成分纯度的技术发展方向。
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