文献类型：期刊文献

英文题名：Modification of phosphogypsum morphology and properties via deep purification

作者：Zhang, Jie Wei, Chao Wang, XiaoPing Sun, TongKang Ran, Jingyu Zhang, Zuotai Li, WenBo

第一作者：张健

通信作者：Ran, JY[1]

机构：[1]Guizhou Inst Technol, Guizhou Inst Phosphogypsum, Guiyang 550003, Peoples R China;[2]Southern Univ Sci & Technol, Key Lab Municipal Solid Waste Recycling Technol &, Shenzhen 518055, Peoples R China;[3]Guizhou Inst Technol, Key Lab Chem Admixture Sci & Technol, Guiyang 550003, Peoples R China;[4]Guizhou Inst Technol, Collaborat Innovat Ctr Guizhou Prov Efficient Util, Guiyang 550003, Peoples R China;[5]Befar Grp Co Ltd, Binzhou 256600, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Guizhou Inst Phosphogypsum, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2026

卷号：54

外文期刊名：MATERIALS TODAY COMMUNICATIONS

收录：;Scopus(收录号：2-s2.0-105040728045);WOS:【SCI-EXPANDED(收录号:WOS:001788856900001)】；

基金：This work was supported by high-level talent research start-up funding project of Guizhou Institute of Technology (No.2023GCC055) . Authors would like to acknowledge the Natural science Research project of the Education Department of Guizhou Province (No. QJJ [2023] 022) , the Natural science research project of the education department of Guizhou province (No.QJJ [2023] 077) , Guizhou Province Basic Research Program General Project (Guizhou Science and Technology Cooperation-Basic MS [2026] 254) , the National Natural Science Foundation of China (No. 52268001) , Natural science Research project of the Education Department of Guizhou Province (No.QJJ [2022] 001) , Guizhou Province Basic Research Program (Natural Science) Youth Guidance Project [Qiankehe Basic- [2024] Youth 362] . The authors would like to thank the financial support by the People's Government of Kaiyang County, Guizhou Province, China.

语种：英文

外文关键词：Phosphogypsum; Deep purification; Calcination; Sulfonated kerosene; Extraction

摘要：Phosphogypsum contains impurities such as fluorine (F), P2O5, Al, Mg, Fe, and Cu. Because purification technologies remain insufficiently developed, phosphogypsum is poorly utilized and tends to accumulate over the long term, causing serious environmental pollution. In this study, fluorine in phosphogypsum was removed through sulfuric acid pretreatment, while organic matter was eliminated and the whiteness of phosphogypsum was improved by calcination. The optimal process conditions were determined as follows: a sulfuric acid mass fraction of 30%; a solid-to-liquid ratio (phosphogypsum to sulfuric acid solution) of 1:1.9; a leaching temperature of 95 degrees C; a leaching time of 25 min; a calcination temperature of 550 degrees C; and a calcination time of approximately 50 min. Under these conditions, the whiteness of phosphogypsum reached 95.2%, and the fluoride ion removal rate achieved 83.1%. The proposed approach provides a feasible route to mitigate phosphogypsum-related pollution and enhance its utilization, offering considerable economic and social benefits.