摘要
在浮选过程中，黄铜矿表面会发生氧化，生成疏水的元素硫，使其具有很好的可浮性；在黄药存在的体系中，黄铜矿表面的疏水产物双黄药还原时的交换电流密度仅为８６ ×１０ － ３ μＡ／ｃ ｍ ２ ，在动力学上存在较大的阻力。要在硫化矿浮选过程中实现黄铜矿的抑制，必须解吸黄铜矿表面的捕收剂。
In the process of flotation, the surfaces of chalcopyrite are oxidized to form hydrophobic elemental sulfur. Therefore the chalcopyrite has very good flotability. In the system in which xanthate occurs, the exchanged current density during the reduction of hydrophobic product——dixanthate is only 8.6×10 -3 μA/cm 2. From this, it can be seen that there is a large resistance in the reduction of dixanthate dynamically. To achieve the depression of chalcopyrite in flotation of sulphide ore, it is necessary to desorb collectors from the surfaces of chalcopyrite and adsorb hydrophile onto the surfaces of chalcopyrite to cover the elemental sulfur.
出处
《矿冶工程》
CAS
CSCD
北大核心
1999年第3期34-36,共3页
Mining and Metallurgical Engineering
基金
国家自然科学基金
关键词
黄铜矿
抑制
电化学
氧化还原电位
浮选
chalcopyrite
depression
electrochemistry
oxidation reduction potential
