Upgrading Alabama tantalum concentrates.
Petersen-AE; Behunin-DV; O'Dell-WO Jr.
SME Annual Meeting, February 15-18, 1993, Reno, Nevada. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., preprint 93-152, 1993 Feb; :1-8
The Bureau of Mines conducted research on high-intensity magnetic separation methods for upgrading tantalum concentrates from Alabama. Process flow sheets were studied to maximize tin removal and minimize tantalum loss. Using laboratory-scale equipment, concentrates were produced which contained over 65% combined Ta2O5-Nb2O5, up to 78% of the tin was recovered as a byproduct, containing about 70% SnO2. Only 1 to 5% of the tantalum reported with the tin byproduct. The producer subsequently incorporated high-intensity magnetic separation into its process flow sheet to provide concentrates for the National Defense Stockpile.
Mining-industry; Mineral deposits; Metals; Metallic minerals; Metal refining
SME Annual Meeting, February 15-18, 1993, Reno, Nevada