Electrochemical flotation of ethyl xanthate-pyrrhotite system

• 作者: 张芹 聂珍缓 胡岳华 顾帼华
• 来源期刊: 中国有色金属学会会刊（英文版）
• 学科: 工学
• 关键词: ethyl xanthate pyrrhotite electrochemical flotation FTIR spectroscopy cyclic voltammetry
• 年，卷（期）: 2004,（6）
• 页码范围: 1174-1179
• 页数: 6页
• 分类号: TD952
• 语种: 英文

摘要

The flotation behavior of pyrrhotite was investigated by using ethyl xanthate as a collector. The results show that pyrrhotite has good floatability from pH 2 to 11, and poor flotability when pH＞12. The reagents adjusting potential are ammonium persulfate ((NH4)2 S2 O8) and sodium dithionite (Na2 S2O4 ). The flotation of pyrrhotite is dependent on pulp potential at certain pH value. The potential-pH range for pyrrhotite flotation was established. Cyclic voltammetry and FTIR spectroscopy analysis show that the major adsorption product of ethyl xanthate on pyrrhotite is dixanthogen. The intensity of FTIR signals of dixanthogen adsorbed on pyrrhotite and the anode current of a pyrrhotite electrode and flotation response of pyrrhotite are correlated with pulp potentials.