环境工程学报2011，Vol.5Issue(9)：2129-2132,4.
浓硫酸低温分解废弃稀土抛光粉工艺研究
Recovery of waste rare earth polishing powder by concentrated sulphuric acid at low temperature
摘要
Abstract
The decomposition and recovery of waste rare earth polishing powder by concentrated sulphuric acid at low temperature were studied.The effect of amount of sulphuric acid,reaction time and temperature were investigated in detail.The recovery yield of rare earth was more than 95%.The process of decomposition was monitored by the thermogravimetry-differential thermal analysis and infrared spectroscopy.It was divided into two stages of 270 ℃ and 300 ℃,at which the decomposition of REO and rare earth oxy-fluoride were occurred.关键词
废弃稀土抛光粉/热重-差热/红外光谱/分解过程Key words
waste RE polishing powder/thermogravimetry-differential thermal analysis/infrared spectroscopy/decomposition process分类
资源环境引用本文复制引用
王秀艳,刘杰民,杜健..浓硫酸低温分解废弃稀土抛光粉工艺研究[J].环境工程学报,2011,5(9):2129-2132,4.基金项目
国家自然科学基金资助项目 （）
新世纪优秀人才计划 （）
中央高校基本科研业务费专项资金资助项目 （）
