新型捕收剂对磷灰石和方解石浮选影响及吸附

Influence of a Novel Collector on Flotation of Apatite and Calcite and Its Adsorption

通过单矿物浮选试验、接触角试验、zeta电位测量和总有机碳(TOC)检测,研究一种新型N-16捕收剂对磷灰石和方解石的浮选行为。单矿物浮选试验表明:在碱性条件下,N-16捕收剂对磷灰石具有较好的捕收效果,而对方解石捕收效果较差。N-16与磷灰石和方解石作用后进行了接触角测量,相对于方解石,磷灰石表面具有更好的疏水性。随后,通过zeta电位的测量可知,添加了N-16捕收剂后,磷灰石的表面电位变得更负,这是因为N-16解离后,捕收剂阴离子吸附在了磷灰石表面。TOC检测结果表明,磷灰石比方解石吸附了更多的捕收剂,造成磷灰石和方解石可浮性的差异。

In this thesis, influence and adsorption of a novel collector on flotation of apatite was investigated with pure mineral flotation tests, contact angle tests, zeta-potential determination and total organic carbon （TOC） measurement. In alkaline condition, N-16 is efficient collector of apatite flotation through pure mineral flotation tests, however, the weak function on calcite. Compared to calcite, hydrophobicity of apatite surface increasing after N-16 react with apatite according to contact angle tests. Subsequently, zeta-potential determination indicated that the potential of apatite change more negative because N-16 anions adsorb on surface of apatite. TOC tests show that apatite adsorb more collector compared to calcite, apatite show efficient floatability in flotation.