中南大学学报（自然科学版）2011，Vol.42Issue(3)：561-567,7.
Ca2+对钛铁矿与钛辉石浮选行为的影响
Influence of calcium ion on flotation of ilmenite and titanaugite
摘要
Abstract
The solubility behavior of mineral surface ions and effects of Ca2+ on flotation of ilmenite and titanaugite were investigated.The results show that the addition of Ca2+ into pulp has little impact on ilmenite flotation, while it can activate titanaugite flotation.Large numbers of Ca2+ may dissolve into pulp from mineral surface in flotation process.When solvent ions are removed, the floatability of ilmenite changes little under weak acid pH condition but deteriorates obviously under the alkaline pH condition.On the other hand, the poor floatability of titanaugite is found in the whole pH range.Addition of Ca2+ into flotation pulp which is isolated from solvent ions will partly recover the floatability of these two minerals under alkaline condition.The main reason of activation of titanaugite is that Ca2+ increases active sites for the oleate adsorption on the surface of titanaugit which results from the adsorption of carboxyl complexes and precipitation of hydroxide of Ca2+.关键词
钛铁矿/钛辉石/Ca2+/浮选/溶解分类
矿业与冶金引用本文复制引用
张国范,鄢代翠,朱阳戈,冯其明,欧乐明,卢毅屏..Ca2+对钛铁矿与钛辉石浮选行为的影响[J].中南大学学报（自然科学版）,2011,42(3):561-567,7.基金项目
国家重点基础研究发展规划项目(2007CB613602) （2007CB613602）
教育部博士点基金资助项目(20090162110053) （20090162110053）
湖南省研究生科研创新项目 (CX2009B049) （CX2009B049）
