碳酸钠在氧化铅浮选中的研究与应用  

Research on Sodium Carbonate in Flotation of Lead Oxide and Its Application

作　　者：刘建辉[1] 陈献梅[2] 

机构地区：[1]云南新立有色金属有限公司,云南昆明650100 [2]昆明冶金研究院,云南昆明650031

出　　处：《云南冶金》2012年第4期16-17,41,47,共4页Yunnan Metallurgy

摘　　要：某氧化铅浮选矿浆中含有大量的可溶性盐,致使矿浆中的Ca2+浓度增大并转化为碳酸钙覆盖在碳酸铅矿物表面,阻碍碳酸铅的硫化。添加碳酸钠,使Ca2+预先沉淀,有利于碳酸铅的硫化,同时提高捕收剂与碳酸铅作用的机率,改善浮选矿浆环境,从而有效地提高氧化铅的回收率。A large amount of soluble salt in the flotation pulp of a lead oxide ore causes the increase of Ca2 ＋ concentration in the pulp, and these Ca2 ＋ are converted into calcium carbonate which covers the surface of lead carbonate minerals. Ca2 ＋ can be precipitated in advance by adding sodium carbonate, which is beneficial to sulfuration of lead carbonate, enhances the reaction probability of collector with lead carbonate, and improves the environment of flotation pulp so as to effectively increase the recovery of lead oxide.

关 键 词：碳酸钠 碳酸铅 CA2+ 回收率 

分 类 号：TD923[矿业工程—选矿]