Electrokinetic and flotation behaviors of hemimorphite in the presence of sodium oleate
Electrokinetic and flotation behaviors of hemimorphite in the presence of sodium oleate
复制标题
DOI：
10.1016/j.mineng.2015.09.016
复制
发表时间：
2015-12
影响因子：
4.8
通讯作者：
Cheng Liu;Q. Feng;Guofan Zhang
中科院分区：
文献类型：
--
作者：
Cheng Liu;Q. Feng;Guofan Zhang
研究了半亚铁矾在油酸钠溶液中的电动力学和浮选行为。微浮选试验结果表明，半亚铁原矿在pH 4.0 ~ 9.0和pH 11.0范围内具有良好的可浮性。半非晶的零电荷点pH值为5.1。zeta电位和FTIR测量结果表明，油酸钠在半亚铁上的吸附机制涉及化学和物理相互作用。油酸钠主要与半亚晶表面的Zn发生反应。在酸碱pH范围内，半亚铁颗粒之间的聚集作用提高了半亚铁的可浮性，这种聚集作用更可能是由疏水相互作用而不是静电相互作用引起的。
The electrokinetic and flotation behaviors of hemimorphite in sodium oleate solution were studied. The results of micro-flotation experiments indicate that hemimorphite shows good floatability at pH 4.0–9.0 and pH 11.0. The point of zero charge (PZC) of hemimorphite is pH 5.1. Zeta-potential and FTIR measurements indicate that the mechanism of sodium oleate adsorption on hemimorphite involves both chemical and physical interactions. Sodium oleate mainly reacts with the Zn on the hemimorphite surface. In acid/base pH range, the aggregation among hemimorphite particles which is more likely caused by hydrophobic interaction than electrostatic interaction improves hemimorphite’s floatability.