| 摘要 |
The process for recovering Ta/Nb values from highly flourinated ore materials by the process of; (a) contacting the materials with one or a mixture of HNO3 or HCl, and H3BO3 wherein the H3BO3 to other acid molar ratio is from about 1/10 to about 1/1, (b) maintaining the temperature between about 55 C. and about 85 C., (c) reacting for a sufficient period to substantially solubilize the major portion of the materials and to substantially insolubilize all Ta/Nb values, and (d) separating the solids containing the Ta/Nb values from solution. |
