丁基铵黑药体系下铁闪锌矿的浮选行为及其表面吸附机理

研究在丁基铵黑药作用下,矿浆pH对硫酸铜未活化和活化铁闪锌矿的浮选试验,以及铁闪锌矿表面ζ电位及红外光谱测定,探讨了丁基铵黑药体系下,铁闪锌矿的浮选行为及其表面吸附机理。结果表明,铁闪锌矿在弱酸性及中性条件下可浮性较好,Cu2+对其有较强的活化效果。丁基铵黑药在铁闪锌矿表面为化学吸附,其表面生成双黑药,加入Cu2+后在铁闪锌矿表面生成正二丁基二硫代磷酸铜,使铁闪锌矿可浮性得以大大改善。

FLOTATION AND ADSORPTION MECHANISM OF MARMATITE ON AMMONIUM DIBUTYL DITHIOPHOSPHATE

The flotation and adsorption mechanism of marmatite are investigated by pH values on recovery of marmatite in presence of ammonium dibutyl dithiophosphate with and without Cu2 + iron tests and the measurement of ζ potential and FTIR. The results show that in weak acid and neutral solution, the floatability of marmatite is best,and to a certain extent,Cu2+ ion can affect the floatability of marmatite. The ζ potential and FTIR spectroscopy analysis show that the surface adsorption is chemisorption and its products may be dual-aerofloat. After Cu2+ added,the surface of marmatite is dibutyl copper dithiophosphate, so that marmatite floatability can be greatly improved.