铵-胺盐强化硫化体系中硅孔雀石浮选动力学研究

浮选过程是一个相当复杂的物理化学过程,受到诸多内外因素的影响,而浮选动力学正是研究在各种影响因素下浮选过程随时间的变化规律。本研究对碳酸氢铵、乙二胺磷酸盐、碳酸氢铵与乙二胺磷酸盐组合铵(胺)盐对硅孔雀石的强化硫化作用进行浮选动力学研究。首先在不同条件下对硅孔雀石进行分批刮泡浮选试验,然后分别计算了在不同条件下硅孔雀石的浮选速率并进行浮选动力学拟合,构建了不同浮选体系下硅孔雀石的浮选动力学模型。研究表明硅孔雀石在碳酸氢铵与乙二胺磷酸盐组合铵(胺)盐的体系中的浮选速率常数比在单一的碳酸氢铵、乙二胺磷酸盐体系中要高,从而引起硅孔雀石回收率的增加。

Study on Flotation Kinetics of Silicomalachite in Ammonium-Ammonium Salt Enhanced Sulfuration System

Flotation process is a very complex physical and chemical process, which is affected by many internal and external factors. Flotation dynamics is to study the variation of flotation process with time under various factors. In this study, the flotation kinetics of the enhanced sulfuration of silica Malachite by ammonium bicarbonate, ethylenediamine phosphate, ethylenediamine phosphate and ammonium bicarbonate was studied. Firstly, scraping-bubble flotation experiments were carried out under different conditions. Then, the flotation rates of silica-malachite under different conditions were calculated and the flotation kinetics was fitted. The flotation kinetics models of silica-malachite under different flotation systems were constructed. Kinetics study shows that the flotation rate constant of silica malachite in the system of ethylenediamine phosphate and ammonium bicarbonate combination ammonium (amine) salt is higher than that in the system of single ammonium bicarbonate and ethylenediamine phosphate, which results in the increase of the recovery of silica malachite.