【摘要】 考查了乙黄药为捕收剂时磁黄铁矿的浮选行为 ,发现在pH =1～ 12范围内 ,磁黄铁矿均表现出良好的可浮性 ,只有当pH >12时 ,可浮性下降。通过用氧化剂过硫酸铵 ,还原剂硫代硫酸钠调节矿浆电位 ,考查了磁黄铁矿在不同pH值下 ,可浮性与矿浆电位之关系 ,得出了矿物可浮的电位 pH区间。并通过红外光谱测试的研究 ,探讨了乙黄药在磁黄铁矿表面作用机理及生成产物 ,不同pH值及不同电位下与乙黄药作用后 ,磁黄铁矿红外吸收强度与其回收率有对应关系 ,双黄药是主要吸附产物。更多还原

【Abstract】 The flotation behavior of pyrrhotite was investigated by using ethyl xanthate as a collector. The results showed that pyrrhotite had good floatability when pH=1～11, and poor floatability when pH>12. The electrical potential of pulp was adjusted by using ammonium persulfate [(NH 4) 2S 2O 8] and sodium thiosulfate (Na 2S 2O 4). The relationship between floatability and electrical potential pulp for pyrrhotite in different pH value has been investigated, obtaining potential-pH range for floatable pyrrhotite. The mechanism of action for ethyl xanthate and production on the surface of pyrrhotite has been investigated by FTIR spectroscopy, and it is found when pyrrhotite acting with ethyl xanthate in the different pH value and at the different electric potential, the infrared absorption and recovery of pyrrhotite has a corresponding relationship. The main adsorption product on pyrrhotite is dixanthogen.更多还原