微细粒铜镍硫化矿浮选的疏水絮凝机制研究  

Mechanism of Hydrophobic-Flocculation of UltraFine Copper-Nickel Sulfide Containing Platinum and Palladium during Flotation

作　　者：唐敏[1] 张文彬[1] 

机构地区：[1]昆明理工大学国土资源工程学院矿物加工工程系,云南昆明650093

出　　处：《稀有金属》2008年第4期506-512,共7页Chinese Journal of Rare Metals

基　　金：国家"九五"科技攻关项目(国家计科技1652号)资助

摘　　要：应用胶体DLVO理论来理论分析某微细粒铜镍硫化矿絮凝浮选的内在絮凝机制,并借助于纯矿物(镍黄铁矿)浮选试验水中显微镜观测结果加以说明和验证。分析了影响疏水絮凝的主要因素有:颗粒粒径、矿物浓度、组合捕收剂的种类和用量、分散剂和选择性抑制剂的种类和用量等。并通过纯矿物试验与矿石试验,从理论上和实践上加以分析和研究,找出用常规的疏水絮凝方法进行浮选难以有效除去精矿中蛇纹石脉石的主要原因。Based on DLVO theory the mechanism of internal flocculation of some minerals such as ultrafine copper-nickel sulfide containing Pt and Pd in Yunnan was analyzed during the process of flocculating flotation. In order to obtain visible evidence of the presence of hydrophobic flocculation microscope photographs of pure mineral pentlandite were taken during flotation process. The main factors affected the hydrophobic flocculation for the flotation of valuable minerals had been analyzed. The results indicated that the size of mineral particles, density of mineral, combined collectors; type and amount of dispersants and selective depressants and so on could affect hydrophobic flocculation. The results of traditional flocculation for the ore showed that high MgO of weight percentage in the concentrate had been reported, and the reason for which had been found on theory and in practice. From the results of theoretical analysis and experiments the main reason was found for no effective moving serpentine as gangue from the concentrate by normal hydrophobic flocculation.

关 键 词：疏水絮凝 絮凝物 组合捕收剂 铜镍硫化矿 分散剂和选择性抑制剂 

分 类 号：TD923[矿业工程—选矿]