摘要
用能带模型研究了黄药与硫化矿物的作用机理 ,说明了硫化矿物表面捕收剂膜的稳定性与半导体能带结构的关系 ,并推导出黄铁矿Barsky关系式。对矿物表面双黄药解吸作用的研究 ,表明矿物表面双黄药的解吸主要受控于矿物电子能级 ,而半导体矿物边缘能级和费米能级影响矿物表面双黄药的稳定性 ,改变硫化矿物的费米能级或边缘能级可以实现双黄药的解吸。根据电化学浮选抑制的能带模型 ,可开发出高效硫化矿有机抑制剂。
The interaction mechanism between xanthate and sulphide minerals was discussed by means of energy band model, and the correlation of stability of collector's coating with energy band structure of semiconductor was also illustrated, meanwhile the Barsky formula was deduced from theory. The correlation between desorption of dixanthogen on the mineral surface and energy level of mineral was researched. The results show that the desorption of dixanthogen on mineral surface is mainly controlled by electronic level of minerals; Fermi level and edge level can affect the stability of dixanthogen electrochemically adsorbing on the mineral surface. Based upon energy band model of electrochemical separation, new organic depressants can be developed. [
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2000年第3期426-429,共4页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金!( 5 97740 11)
关键词
能带模型
硫化矿物
电化学浮选
黄药
model of energy bands
sulphide minerals
dixanthogen
electrochemical flotation
