磷石膏建材资源化利用研究进展

doi:10.19964/j.issn.1006-4990.2021-0346

Abstract

Abstract:

The resource utilization of phosphogypsum in building materials can not only consume a large amount of phospho-gypsum,but also has high added value,which is one of the important measures to deal with phosphogypsum.The research progress of phosphogypsum in the field of gypsum board,gypsum block,plastering gypsum,self-leveling gypsum,gypsum mold box and other building materials production in recent years was summarized.The current problems faced by the resource utilization of phosphogypsum building materials were analyzed,such as uneven distribution,uncoordinated supply and de-mand,poor product quality,low market recognition,imperfect specification and inadequate policy incentives.The measures were proposed such as the development of phosphogypsum pretreatment clean technology research,improving the quality and stability of phosphorus building gypsum,and through policy guidance and financial incentives,to further expand the resource utilization of phosphogypsum in the field of building materials.

Key words: phosphogypsum, utilization in building materials, utilization of solid waste

CLC Number:

TQ126.3

DONG Ze,ZHAI Yanbo,REN Zhiwei,YAN Bangqi. Research progress on phosphogypsum utilization in building materials[J]. Inorganic Chemicals Industry, 2022, 54(4): 5-9.

Figures/Tables 3

References 43

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w（SO₃）	w（CaO）	w（SiO₂）	w（Al₂O₃）	w（MnO）	w（Fe₂O₃）	w（MgO）
32.20	28.63	17.06	0.236	≤0.1	0.212	≤0.03
w（K₂O）	w（Na₂O）	w（P₂O₅）	w（F）	w（H₂O）	w（其他）
≤0.1	≤0.1	0.70	≤0.5	18.84	1.441

应用行业	常见用途
化工行业	制备硫酸钙晶须、羟基磷灰石和碳酸钙晶须等
水泥行业	用作水泥缓凝剂、矿化剂、激发剂等
建材行业	制备磷石膏砖（砌块）、石膏板、建筑石膏粉等
交通行业	用作道路填充材料
农业行业	利用磷石膏中的钙、磷等元素改良土壤

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Research progress on phosphogypsum utilization in building materials

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