XIN Xiangyu¹, CHEN Guangli¹, ZHANG Xiuzhi¹, FENG Shuxia¹, HUANG Yongbo¹,WANG Xujiang², DUAN Guangbin¹

(1. College of Materials Science and Engineering， University of Jinan, Jinan 250022, China;2.School of Energy and Power Engineering, Shandong University, Jinan 250012, China)

Abstract: The chemical composition of different types of gypsum was reviewed. The regeneration methods and application fields of gypsum such as waste gypsum, phosphogypsum, desulfurized gypsum, fluorine gypsum and titanium gypsum were summarized. After the waste gypsum is hydrated into recycled gypsum, the recycling of gypsum resources can be realized. After the regeneration of phosphogypsum, it can be used as building gypsum, cement retarder and chemical fertilizer, etc. Desulfurized gypsum can be converted into high strength gypsum or building gypsum under certain conditions, and fluoropgypsum and titanium gypsum can only be used in primary processing. The development status and trend of gypsum solid waste industry were summarized. Although the comprehensive utilization rate of phosphogypsum and desulfurized gypsum has been increased year by year, there are few advanced gypsum products at the present stage. Because the output of titanium gypsum and fluoropgypsum is small, the comprehensive utilization rate needs to be further improved. Due to the different types of gypsum solid waste in different regions, it is suggested to choose the appropriate treatment and utilization method of solid waste according to the region, introduce relevant policies and learn from the advanced solid waste treatment technology abroad. It is believed that the problems of economy, environmental protection and utilization rate should be considered comprehensively in solid waste treatment, which will be the development trend of gypsum solid waste regeneration industry in the future.

Keywords: solid waste; gypsum; phosphogypsum; desulfurized gypsum; recycled gypsum; regeneration

Received： 2022-05-31，Revised：2022-11-06，Online：2022-12-02 10:26。

Funding Project：国家重点研发计划项目，编号：2020YFC1910000。

First Author： 信翔宇(1999—)，男，硕士研究生，研究方向为固体废弃物综合利用。E-mail： mse_xinxy@163.com。

Corresponding Author： 段广彬(1983—)，男，教授，博士，硕士生导师，研究方向为固体废弃物综合利用。E-mail： mse_duangb@ujn.edu.cn。