利用电石渣固化磷石膏中的水溶性磷、水溶性氟  

Solidification of water-soluble phosphorus and fluorine in phosphogypsum with carbide slag

作　　者：李兵 陈靖 LI Bing, CHEN Jing(School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China)

机构地区：[1]长江师范学院化学化工学院,重庆408100

出　　处：《磷肥与复肥》2018年第9期6-9,共4页Phosphate & Compound Fertilizer

摘　　要：磷石膏长期大量堆存占用土地资源,并对环境产生威胁,研究其无害化处置成为重要解决路径。利用电石渣固化磷石膏中的水溶性磷和水溶性氟,考察电石渣添加量、反应时间、反应温度对磷石膏中水溶性磷、水溶性氟固化效果的影响。实验结果表明,在电石渣添加量为0.8 g(200 g磷石膏)、反应时间为2 h、反应温度为30℃条件下,磷石膏中水溶性磷、水溶性氟基本被固化。A large number of land resources have been accumulated and occupied by phosphogypsum for a long time, which poses a threat to the environment. An important technical solution path is its harmless disposal method. Using carbide slag to cure harmful impurities water-soluble phosphorus and water-soluble fluorine in phosphogypsum,the effects of the addition amount of carbide slag,reaction time and reaction temperature on solidification of water-soluble phosphorus and water-soluble fluorine in phosphogypsum are investigated through experiments. The water-soluble phosphorus and fluorine in phosphogypsum are basically solidified at the addition amount of carbide slag of 0.8 g（200 g phosphogypsum）, reaction time of 2 hours, and reaction temperature of 30℃.

关 键 词：磷石膏 无害化处置 固化 水溶性磷 水溶性氟 

分 类 号：X781[环境科学与工程—环境工程]