摘要
考察了乙硫氮为捕收剂时磁黄铁矿的浮选行为,发现在pH2-12的范围内,磁黄铁矿均可表现良好的可浮性。只有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, 考察了磁黄铁矿在不同pH值下,可浮性与矿浆电位之关系,得出了矿物可浮电位-pH区间。通过红外光谱测试技术的研究,探讨了乙硫氮在磁黄铁矿表面作用机理及生成产物,不同pH值下与乙硫氮作用后,磁黄铁矿浮选回收率与乙硫氮红外吸收强度有对应关系,乙硫氮的二硫化物秋兰姆是主要吸附产物。
The flotation behavior of pyrrhotite was investigated by using sodium diethyldthiocarbamate as a collector. The results showed that pyrrhotite had good floatability from pH2 to pH12, and poor flotability when pH〉12. The pulp potential was adjusted by ammonium persulfate （（NH4）2S2O8）and sodiumdithionite （Na2S2O4）, The flotation of pyrrhotite was dependent on pulp potential. The potential-pH range for pyrrhotite flotation was established. FTIR spectroscopy analysis showed that the major adsorption product of diethyldithiocarbamate on pyrrhotite is tetraethylthiuram disulfide TETD. The intensity of TTIR signals of TETD adsorption on pyrrhotite and flotation recovery response of pyrrhotite are correlated with pule potentials.
出处
《有色金属（选矿部分）》
CAS
2006年第1期34-38,25,共6页
Nonferrous Metals（Mineral Processing Section）
基金
国家自然科学基金重点项目(50234010)
关键词
红外光谱
乙硫氮
磁黄铁矿
电化学浮选
pyrrhotite
diethyldithiocarbamate
electrochemical flotation
FTIR spectroscopy.
