(1. 东北大学 资源与土木工程学院，沈阳 110819;
2. 郑州大学 化学与能源学院，郑州 450001;
3. 中国金域黄金物资总公司，北京 100101)
摘 要: 通过动电位分析、润湿接触角测试、吸附量测试并结合浮选实验，考察滑石和辉钼矿单矿物的浮选行为，以葡聚糖为抑制剂，研究硫化矿体系中辉钼矿和滑石的浮选分离。结果表明:在无捕收剂情况下，辉钼矿和滑石的天然疏水性强，可浮性相似，难以实现浮选分离。加入的葡聚糖在辉钼矿和滑石矿物表面形成选择性吸附，使两者具有不同的浮选行为。当溶液pH为8.5、葡聚糖用量400 mg/L时，辉钼矿可以得到有效抑制，回收率仅为14.37%，而滑石受到的抑制作用较弱，其回收率为83.22%，两者的浮游差为68.85%，这使得滑石和辉钼矿的浮选分离成为可能。
关键字: 辉钼矿;滑石;葡聚糖;抑制;浮选;分离
（1. College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China;
2. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;
3. China National Jinyu Gold Materials and Equipment Corporation, Beijing 100101, China）
Abstract:The flotation behaviors of molybdenite and talc minerals were investigated and the flotation separation of talc from molybdenite was studied through zeta potential measurements, contact angle measurements, adsorption measurements and flotation tests. The results show that the natural floatability of molybdenite and talc are good and similar without collector, so, it is very difficult to achieve the flotation separation of talc from molybdenite. Glucan has selective adsorption on pure mineral surfaces of molybdenite and talc, and makes flotation behaviors of the two minerals different. Different from talc, the floatability of molybdenite can be inhibited effectively with glucan. The use of glucan provided 68.85% window of separability when glucan dosage is 400 mg/L in solution at pH 8.5. So, it is possible to achieve the flotation separation of talc from molybdenite.
Key words: molybdenite; talc; glucan; depression; flotation; separation
