Department of Mineral Processing, Faculty of Mining Engineering, Sahand University of Technology, Sahand New Town, Tabriz, Iran.
Department of Mineral Processing, Faculty of Mining Engineering, Sahand University of Technology, Sahand New Town, Tabriz, Iran.
J Hazard Mater. 2020 Jan 5;381:120946. doi: 10.1016/j.jhazmat.2019.120946. Epub 2019 Jul 29.
In this work, the flotation recovery of sphalerite and pyrite from an old high zinc grade tailing was studied. In particular, the effect of different flotation reagents such as collector, auxiliary collector, depressant, activators, and frother on the flotation performance were investigated. The synergic effect of the collector blends, as well as frother blends were also studied. In addition, the effect of the pre-conditioning of flotation pulp with scrubbing or ultrasonic on the selective separation of sphalerite and pyrite minerals were studied. More than 73% of the sphalerite was recovered from the accumulated tailings in the rougher stage. The pulp viscosity was considerably increased by increasing the pH from 5.5 to 10.5. As a result, sphalerite recovery and Zn selective separation were both considerably dropped. It was also found that frothers (MIBC and A65) have a synergic effect, and their mixture showed better metallurgical results than when each frother were solely used. The pre-conditioning with scrubbing or ultrasonic resulted in a major increase in the sphalerite floatability.
本工作研究了从旧的高锌品位尾矿中浮选回收闪锌矿和黄铁矿。特别是研究了不同浮选药剂（如捕收剂、辅助捕收剂、抑制剂、活化剂和起泡剂）对浮选性能的影响。还研究了捕收剂混合物和起泡剂混合物的协同作用。此外，还研究了浮选浆预先用擦洗或超声处理对闪锌矿和黄铁矿矿物选择性分离的影响。在粗选阶段，从堆积的尾矿中回收了超过 73%的闪锌矿。通过将 pH 值从 5.5 增加到 10.5，使矿浆粘度大大增加。结果，闪锌矿回收率和 Zn 选择性分离都大大下降。还发现起泡剂（MIBC 和 A65）具有协同作用，它们的混合物比单独使用每种起泡剂显示出更好的冶金效果。擦洗或超声预处理导致闪锌矿可浮性显著提高。
