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我国包头矿中除稀土外,还含有丰富的铌化合物。但是铌的品位低、矿物种类多、颗粒细而且与铁、锰、磷等多种元素共生。给选矿分离带来很大困难。因此如何有效地把共生元素分开,经济地综合提取各个元素,这是理论和生产实际迫切需要解决的课题。但是迄今有关铌的热力学数据仍非常缺乏,尤其铌在铁液和渣中的热力学数据几乎是空白。 我组在魏寿昆教授领导下,自1978年以来先后完成了下列基础理论研究工作: (1)应用固体电解质氧电池技术测定了铌在铁液中活度,以及铌、锰、硅等元素对铁
In addition to rare earth in China’s Baotou mine, it also contains abundant niobium compounds. However, the low grade of niobium, mineral species, fine particles and with iron, manganese, phosphorus and other elements symbiotic. To dressing separation has brought great difficulties. Therefore, how to effectively separate the symbiotic elements and extract all the elements economically is the urgent problem to be solved theoretically and practically. However, the thermodynamic data of niobium so far are still scarce. In particular, the thermodynamic data of niobium in molten iron and slag are almost blank. Under the leadership of Professor Wei Shoukun, our group has successively completed the following basic theoretical researches since 1978: (1) The activity of niobium in molten iron and the effect of niobium, manganese and silicon on iron