Tantalum-niobium ore is a general term for minerals containing tantalum and niobium, which can be mined as ores, mainly from tantalite, columbite and pyrochlore. Tantalum-niobium has a series of characteristics such as high melting point, good plasticity, low vapour pressure, good electrical and thermal conductivity, high chemical stability, high dielectric constant of the oxide film on the metal surface, small cross-section of thermal neutron capture of niobium, strong resistance to corrosion of acids and liquid metals, and superconducting properties. China is the world's richest country in niobium, tantalum and other rare metal mineral resources.

Characteristics of tantalum-niobium ore

1、Tantalum deposits are small in scale, with low ore grade, fine and dispersed embedded grain size, and multi-metal accompaniment, resulting in difficult to mine, difficult to separate, difficult to select, and low recovery rate; poor endowment state, and fewer large-scale open pit mines.

2, China has no independent niobium mines, niobium is often associated with rare earths, tantalum.

Investment prospect of tantalum-niobium mine

1、In the electronics industry, tantalum powder and tantalum wire are the key materials for manufacturing tantalum capacitors.

2、In the metallurgical industry, niobium is mainly used in the production of high-strength low alloy steel, stainless steel, heat-resistant steel and so on.

4, in the chemical industry, tantalum niobium is strong acid and liquid metal corrosion-resistant materials, can be used in the cooker, heater, cooler and a variety of devices such as utensils.

5, In addition, in other fields, tantalum-niobium metal and its alloys can be used as atomic energy reactor shell materials, high-energy physics superconducting devices and medical surgical materials.

Introduction of tantalum-niobium ore process

The beneficiation process generally adopts the combined process of dressing-metallurgy to recover tantalum and niobium. It consists of roughing plant, concentrating plant and hydrometallurgical plant. Tantalum and niobium are more dispersed, and the roughing plant adopts jigging, spiral chute, classifier, shaking table, centrifugal concentrator, spiral chute and other kinds of reelection equipment to select and obtain tantalum and niobium and tungsten mixed rough concentrate. The mixed concentrate is sent to the concentrating plant, and after acid washing with heating, the tantalum and niobium mixed concentrate is obtained by using classifier, shaking table, magnetic separator, flotation machine, etc. and smelting, respectively.

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