硫酸镁浸取离子吸附型稀土矿的浸取特性.pdf

Trans. Nonferrous Met. Soc. China 25(2015) 3784−3790


Leaching characteristics of
ion-adsorption type rare earths ore with magnesium sulfate

Yan-fei XIAO1,2, Ying-ying CHEN3, Zong-yu FENG1,2, Xiao-wei HUANG1,2,
Li HUANG1,2, Zhi-qi LONG1,2, Da-li CUI1,2

1. National Engineering Research Center for Rare Earth Materials,
General Research Institute for Nonferrous Metals, Beijing 100088, China;
2. GRIREM Advanced Materials Co., Ltd., Beijing 100088, China;
3. School of Chemical Engineering, China University of Petroleum, Beijing 102200

Received 3 December 2014; accepted 11 June 2015


Abstract: Magnesium sulfate was proposed to be leaching agent to deal with the ion-adsorption type rare earths ore to reduce or
even eliminate ammonia−nitrogen emissions. The effects of temperature, particle size and stirring speed on