亚硫酸氢钠和石灰组合剂与铜镍硫化矿表面的作用机理

来源期刊：中南大学学报(自然科学版)1990年第6期

论文作者：孟书青 王毓华 胡熙赓

文章页码：595 - 601

关键词：浮选； 作用机理； 黄铜矿； 镍黄铁矿/Z—200； 组合药剂

Key words：flotation； reaction mechanism； chalcopyrite； pentlandite/Z-200； combined reagent

摘    要：本文采用显微电泳仪、原子吸收光谱、紫外光谱吸收仪和X射线粉晶衍射仪研究了药剂与矿物表面的作用机理。证明亚硫酸氢钠和石灰组合剂作用后,在镍黄铁矿表面形成了CaSO₃和CaSO₄等亲水性产物,同时降低了矿浆体系的氧化还原电位(Eh),加快了镍黄铁矿表面氧化速度,生成了Fe(OH)₃和Ni(OH)₂等产物,强化了镍黄铁矿的抑制。

Abstract: In this paper, mechanisms of the interaction of reagents with mineral surfaces have been investi-gated by means of microelectrophoresis apparatus, atomic adsorption spectrophotometer, ultra violetspectrophotometer and X-ray powder diffraction spectrometer. It is shown that the addition of com-bined reagent of sodium hydrogen sulfite and lime results in the formation of hydrophilic CaSO₃ and CaSO₄ etc. on the pentlandite, and decreases redox potential (Eh) in the pulp system, and acceleratesoxidation rate of the surface of pentlandite, therefore Fe(OH)₃ and Ni(OH)₂ are formed and thus pent-landite is deprassed strongly.