Columbite ore-Niobium Ta-205 55% - 60%

Commodity: Columbite Ore (Nb2O5 + Ta2O5) 55% - 60%, if Columbite Ore (Nb2O5 + Ta2O5) is less than 55% the buyer has the right to reject the cargo or price re-negotiated.  

Size: 0 - 10 mm (90% min) or agreed with the customer  

Specification: Model of technical specifications:

• Ta2O5 5,020%
• Nb2O5 51,32%
• ZrO2 2,333%
• WO3 1,960%
• CuO 0,361%
• F2O3 10,02%
• TiO2 9,36%  

Uranium and Thorium - Less than 0,1%  

Moisture:  4.00%

rejection above 8.00%  

The material shall be otherwise free from constituents deleterious to the smelting and refining process and free from contamination and no radioactive exceeds bid.  

Product origin: Brazil