Novel Technology for Chlorination of Niobium and Tantalum Oxides and Their Low-Grade Ore Concentrates

DOI: 10.4236/jmmce.2008.72013   PDF   HTML     5,059 Downloads   6,385 Views   Citations


A novel energy-economic and environmentally benign technological procedure for chlorination of niobium and tantalum oxides as well as their low-grade ore concentrates was elaborated. The process is based on using carbon tetrachloride or silicon tetrachloride as a chlorinating agent under pressure. It proceeds at moderate temperatures and is free from the shortcomings of conventional carbochlorination processes such as the use of chlorine gas at very high temperatures and formation of toxic products and ozone depleting agents (phosgene, carbon monoxide, chlorohydrocarbons).

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B. Shainyan, Y. Danilevich, Y. Garmazov, A. Finkelstein, T. Aisueva and V. Turchaninov, "Novel Technology for Chlorination of Niobium and Tantalum Oxides and Their Low-Grade Ore Concentrates," Journal of Minerals and Materials Characterization and Engineering, Vol. 7 No. 2, 2008, pp. 163-173. doi: 10.4236/jmmce.2008.72013.

Conflicts of Interest

The authors declare no conflicts of interest.


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