一、引言由於光谱分析和化学分析迫切需要一种合乎要求的較純的铌钽氧化物,而該物質目前又难得到,因此决定从铌铁矿石中来提取。由於学習了苏联的經驗和技术理論,經过研究,我們試制成功了基本上合乎要求的較純的物質,經过光譜檢查,除含有微量的矽铁钛等杂質外,铌钽的分离是令人滿意的,基本上滿足了工作的需要。实驗室提取铌钽化合物有兩个比較重要的問题,就是钛鋯等杂質的除去和铌钽本身的分离問題,这兩个問題前人作过不少研究,但沒有得到很滿意的結果。从一些資料中可以看出採用水解法和沉淀剂(單 I. INTRODUCTION As spectral and chemical analyzes have desperately needed a relatively pure niobium-tantalum oxide that is currently unavailable, it has been decided to extract it from niobium iron ore. As a result of studying the Soviet Union’s experience and technical theory, after researching, we successfully produced the basically purer substances that are basically in line with the requirements. After spectral examination, the separation of niobium and tantalum except for the trace impurities such as ferrosilicon and titanium Satisfactory, basically meet the needs of work. Laboratory extraction of niobium and tantalum compounds have two more important issues, such as the removal of impurities such as titanium and zirconium and niobium tantalum itself, the separation problem, these two issues have done a lot of research, but did not get very satisfactory results. From some of the data we can see the use of hydrolysis and precipitants (single