Tantalite (Fe, Mn)Ta2O6 Natural Deposits In Nigeria And Its Extraction

Tantalite Ore Mineral Deposits - Nigeria which is situated in the Western part of Africa has a significant and excellent deposit of tantalite, which is world class and is vastly deposited mostly in the northern parts of Nigeria, some of these deposits have been mined and some though discovered and in huge deposits have remained untouched.

It can be found in some states in Nigeria in traces, small and huge deposits such as; Nasarawa, Kogi, Osun, Ekiti, Kwara and Cross Rivers.

 

Tantalite deposits in Nigeria

 

Tantalite is the principal ore of tantalum. Tantalum has a symbol of Ta, melting point of 3,020 °C and a boiling point of 5,457 °C.

Tantalite is characterized as a black or brown mineral and is of 2 forms such as;

Tantalite which is rich in Manganese, characterized by its brown and translucent nature, and is known as tantalite-(Mn) or manganotantalite and Tantalite which is rich in Iron known as mineral tantalite-(Fe) or ferrotantalite.

Tantalite and columbite have similar mineral structure, their chemical characteristics of are similar which is why they are mostly grouped as a semi-singular mineral otherwise known as coltan or "columbite-tantalite".

Irrespective of their similarities, they have a slight difference in terms of colour, transparency, streak and specific gravity, while the specific gravity of tantalite is >8.0 that of columbite is 5.2.

To extract tantalum from tantalite at the mine site, the mineral is first crushed and concentrated using conventional and centrifugal gravity separation, a magnetic separation and advanced flotation before further processing.

 

It may not be surprising to know that there are number of Tantalite mining companies in Nigeria and Africa, but to make the mineral resources more beneficial to the people and the country at large, it is necessary that the government should take an adequate measure in respect to the mining operations of this mineral.

 

Uses of Tantalite/ Tantalum

  • It is used in electronic equipment as tantalum capacitors, like video game systems, mobile phones, computers and DVD players.
  • Is alloyed with other metals to give it a high melting point, strength, and ductility.
  • Is used in metalworking equipment especially in the making of carbide tools.
  • Also used in the production of super alloys for nuclear reactors, jet engine components, missile parts, chemical process equipment.

  • It’s used as a metal for chemical reaction vessels and pipes for corrosive liquids since it is inert against most acids.
  • Tantalum is widely used in the production of radio transmitter electron tubes which are of ultra-high frequency.
  • Is used in the production of vacuum furnace parts due to its high melting point and oxidation resistance.

 



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