|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||K-100: Investigations on Flotation Separation of Scheelite from Calcite and Fluorite using ZT as Depressant
||Tiantian Wang, Hongxin Zhang, Yanfang Huang, Guihong Han, Jiongtian Liu
|On-Site Speaker (Planned)
The flotation behaviors of scheelite, calcite and fluorite under different pulp pH with ZT acting as depressant and FX-6 acting as collector were investigated through micro-flotation tests in this study. The results demonstrated that the floatability of calcite decreased sharply from 95.1% to 5.05%, and the floatability of fluorite drops sharply from 83.67 to 19.90% in the presence of ZT, while the floatability of scheelite remains high (recovery 70%) at pH 8. The selective depression effect of the ZT on calcite and fluorite was explored by zeta potential tests and FTIR analysis. Zeta potential analysis indicated that the negatively charged species in the ZT solution were more likely to absorb on the surface of the calcite and fluorite. FTIR analysis showed that the chemisorption of the ZT occurred on calcite and fluorite surface. These experiments revealed the selective adsorption behaviors of ZT on the calcite and fluorite surface.