Electrochemical flotation of ethyl xanthate-pyrrhotite system
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.
ethyl xanthate、pyrrhotite、electrochemical flotation、FTIR spectroscopy、cyclic voltammetry
14
TD952(选矿)
国家自然科学基金50234010;Pre-Research of the National Basic Research Program of China2001CCA03100
2005-03-09(万方平台首次上网日期,不代表论文的发表时间)
共6页
1174-1179