摘要
根据浮选稀土精矿的性质,分别用体积浓度15%盐酸和15%醋酸,在常温、液固比2∶1、浸出2h的条件下浸出浮选稀土精矿中的方解石,CaCO_3浸出率达65%~75%,稀土精矿品位REO可达30.32%.
According to the nature of flotation rare earth concentrate, the acetic acid and hydrochloric acid were used to leach the calcite from the flotation rare earth concentrates. With the concentration of 15% hydrochloric acid and 15% acetic acid at room temperature, liquid to solid ratio of 2 ： 1 and leaching for 2 h up to 65% to 75%, the grade of the rare earth concentrates can reach 30.32% finally.
作者
肖飞燕
王国生
孟庆波
于丽丽
卜浩
XIAO Feiyan WANG Guosheng MENG Qingboa YU Lili BU Hao(Guangdong Institute of Resources Comprehensive Utilization, State Key Laboratory of Rare Metals Separation and Comprehensive Utilization, Guangdong Provincial Key Laboratory of Development ＆ Comprehensive Utilization of Mineral Resources, Guangzhou 510650, China Central South University Schools of Minerals Processing and Bioengineering, Changsha 410083, China)
出处
《材料研究与应用》
CAS
2017年第2期109-111,117,共4页
Materials Research and Application
基金
广东省科学院科研平台环境与能力建设专项资金项目(2016GDASPT-0204
2016GDASPT-0307)
关键词
稀土精矿
方解石
浸出
rare earth concentrates
calcite
leaching
