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We would like to Buy Columbite with Nb2O5 45-55% min,Ta2O5 approx 5%, U3O8+ThO2 0.5% max. Niobium metal ingots 99.95%min.
With standard-grade ferro-niobium containing around 66% niobium, this equates to a niobium capacity upgrade from 56,000 to 99,000 t/y. Singular sources. Unlike many other metals, tantalum and niobium are sourced from two main ores: tantalite in the case of tantalum, and pyrochlore for niobium.