(1. 東北大學(xué) 資源與土木工程學(xué)院，沈陽(yáng) 110819;
2. 鄭州大學(xué) 化學(xué)與能源學(xué)院，鄭州 450001;
3. 中國(guó)金域黃金物資總公司，北京 100101)
摘 要: 通過(guò)動(dòng)電位分析、潤(rùn)濕接觸角測(cè)試、吸附量測(cè)試并結(jié)合浮選實(shí)驗(yàn)，考察滑石和輝鉬礦單礦物的浮選行為，以葡聚糖為抑制劑，研究硫化礦體系中輝鉬礦和滑石的浮選分離。結(jié)果表明:在無(wú)捕收劑情況下，輝鉬礦和滑石的天然疏水性強(qiáng)，可浮性相似，難以實(shí)現(xiàn)浮選分離。加入的葡聚糖在輝鉬礦和滑石礦物表面形成選擇性吸附，使兩者具有不同的浮選行為。當(dāng)溶液pH為8.5、葡聚糖用量400 mg/L時(shí)，輝鉬礦可以得到有效抑制，回收率僅為14.37%，而滑石受到的抑制作用較弱，其回收率為83.22%，兩者的浮游差為68.85%，這使得滑石和輝鉬礦的浮選分離成為可能。
關(guān)鍵字: 輝鉬礦;滑石;葡聚糖;抑制;浮選;分離
（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
