磷石膏的综合利用及其在建筑材料领域的应用研究进展

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (2): 534-542.

所属专题：资源综合利用

磷石膏的综合利用及其在建筑材料领域的应用研究进展

周武^1,2, 李杨^1,2, 冯伟光³, 苏轶^1,2, 揭伟哲^1,2, 张华^1,2, 倪红卫^1,2

1.武汉科技大学钢铁冶金与资源利用省部共建教育部重点实验室,武汉 430081;
2.武汉科技大学钢铁冶金新工艺湖北省重点实验室,武汉 430081;
3.青岛睿海兴业管理咨询服务有限公司,青岛 266041

收稿日期:2023-09-11 修订日期:2023-11-10 出版日期:2024-02-15 发布日期:2024-02-05
通信作者: 李杨,博士,副教授。E-mail:liyang2468@wust.edu.cn
作者简介:周武(1998—),男,硕士研究生。主要从事固废回收利用的研究。E-mail:2528548316@qq.com
基金资助:
国家自然科学基金面上项目(52374344)

Research Progress on Comprehensive Utilization of Phosphogypsum and Its Application in the Field of Building Materials

ZHOU Wu^1,2, LI Yang^1,2, FENG Weiguang³, SU Yi^1,2, JIE Weizhe^1,2, ZHANG Hua^1,2, NI Hongwei^1,2

1. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;
2. Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking, Wuhan University of Science and Technology, Wuhan 430081, China;
3. Ruihai Xingye Management Consulting Service Co., Ltd., Qingdao 266041, China

Received:2023-09-11 Revised:2023-11-10 Online:2024-02-15 Published:2024-02-05

摘要/Abstract

摘要： 磷石膏是湿法制备磷肥工艺过程中的副产物,主要物相是CaSO₄·2H₂O。我国磷石膏产量居世界第一,综合利用率却不到50%,堆存量已达8亿吨,对生态环境造成了严重破坏,因此,探索磷石膏的有效利用途径已迫在眉睫。本文对磷石膏综合利用主要领域的研究现状进行了分析,其中磷石膏在化工领域的利用率仅有5%,在农业领域的利用率也只有2%,而建筑材料领域是目前磷石膏的主要应用领域。目前将磷石膏应用于水泥缓凝剂、石膏砌块和水泥砂浆已经实现了工业化;将磷石膏应用于胶凝材料和路基材料,由于浸出毒性的问题,并未大规模应用;将磷石膏用作填充剂则因为材料强度较低,仅仅停留于实验室探索阶段。最后展望了未来无害化利用磷石膏技术研究的发展趋势,以期为解决磷石膏的堆存问题提供参考。

关键词: 磷石膏, 综合利用, 应用领域, 建筑材料, 研究现状, 发展趋势

Abstract: Phosphogypsum is a byproduct in the wet process of phosphate fertilizer production, with its main phase being CaSO₄·2H₂O. Despite China being the world's largest producer of phosphogypsum, its comprehensive utilization rate is below 50%. The accumulated stock has reached 800 million tons, causing severe ecological damage. Therefore, exploring effective utilization methods for phosphogypsum is urgently needed. This article analyzes the current research status of the comprehensive utilization of phosphogypsum in various fields. Currently, the utilization rate of phosphogypsum in the chemical industry is only 5%, and in agriculture is a mere 2%, while the building materials sector remains its primary application field. Industrial applications such as using phosphogypsum as a cement retarder, gypsum block, and cement mortar have been industrialized. However, its application in cementitious materials and subgrade materials has not been widely adopted due to concerns about leaching toxicity. The use of phosphogypsum as a filler is still in the experimental exploration phase due to the relatively low strength of material. The paper concludes by envisioning the future trends in the research on environmental friendly utilization of phosphogypsum, aiming to provide references for resolving the stockpile issue of phosphogypsum.

Key words: phosphogypsum, comprehensive utilization, application field, building material, research status, development trend

中图分类号:

X781

周武, 李杨, 冯伟光, 苏轶, 揭伟哲, 张华, 倪红卫. 磷石膏的综合利用及其在建筑材料领域的应用研究进展[J]. 硅酸盐通报, 2024, 43(2): 534-542.

ZHOU Wu, LI Yang, FENG Weiguang, SU Yi, JIE Weizhe, ZHANG Hua, NI Hongwei. Research Progress on Comprehensive Utilization of Phosphogypsum and Its Application in the Field of Building Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(2): 534-542.

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磷石膏的综合利用及其在建筑材料领域的应用研究进展

Research Progress on Comprehensive Utilization of Phosphogypsum and Its Application in the Field of Building Materials

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