摘要:

钽是一种稀有金属，被视为新兴战略金属，广泛应用于多个领域，特别是在能源、国防、高新科技等领域具有不可替代的作用，并随着应用范围日益扩大，用量大幅度增加。铌和钽在自然界中一般呈类质同象混合物的形式存在，目前从铌钽精矿中提钽是最常见的回收钽资源的方法之一。文章概述了从铌钽精矿中提钽的工艺，主要包括精矿分解工艺和铌钽分离工艺。同时介绍和总结了从废硬质合金、废钽电容器、冶金渣等二次原料中提钽的方法，最后对提钽的发展方向进行了展望。

Abstract:

Tantalum is an extremely rare precious metal, which is regarded as an emerging strategic metal. It is widely used in many fields, especially in the fields of energy, national defense, high and new science and technology, and plays an irreplaceable role. With the increasing application scope, the amount of Tantalum increases greatly. Niobium and tantalum generally exist in the form of isomorphic mixture in nature. At present, tantalum extraction from niobium and tantalum concentrate is one of the most common ways to recover tantalum resources. This paper summarizes the process of tantalum extraction from niobium tantalum concentrate including concentrate decomposition process and niobium tantalum separation process. At the same time, the methods of extracting tantalum from secondary raw materials such as waste carbide, waste tantalum capacitor and metallurgical slag are introduced and summarized. Finally, the development direction of tantalum extraction is prospected.