Preparation of Glass-ceramics from Phosphogypsum

2018 1st International Conference on Environment Prevention and Pollution Control Technology

生态环境科学

Liu, Hongpan^1 ; Yang, Jie^2 ; Yang, Jing^2 ; Ma, Liping^2 ; Jiang, Ming^3,4 ; Li, Yuan^3,4 ; Cheng, Yan^1 ; Li, Yuying^1 ; Cao, Zhenrui^1

College of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, Chongqing, Chongqing

402160, China^1

Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan

650500, China^2

College of Resources and Environment, Yunnan Agricultural University, Kunming, Yunnan

650201, China^3

Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Kunming

650201, China^4

关键词: CaO-Al2O3-SiO2;    Differential thermal analyses (DTA);    Energy efficient;    FactSage;    Phosphogypsum;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/199/4/042044/pdf
DOI  :  10.1088/1755-1315/199/4/042044

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

CaO-Al2O3-SiO2 glass-ceramics was prepared from phosphogypsum and studied by differential thermal analysis (DTA) and X-ray diffraction (XRD). CaSO4 in phosphogypsum decomposed into CaS and then it reacted with CaSO4 forming CaO and SO2 when the most energy-efficient reaction by Factsage calculated. SiO2, AlPO4, CaSiO3 (wollastonite-1A) and CaSiO3 (calcium silicate) were identified as the main phases in the glass-ceramics prepared from phosphogypsum.