| 摘要 |
<p>1. Process for the treatment of a mixture of rare earth oxides and gallium oxides, characterized in that, in a first step, the mixture is dissolved by means of an acid, in a second step, the solution resulting from the acid attack is brought into contact with an organic phase containing at least one water-insoluble extraction agent, optionally dissolved in a diluent and chosen from amongst the class of the anionic extraction agents, the classes of the solvating extraction agents or the class of the cationic extraction agents, so as to seperate the gallium from the rare earths by liquid-liquid extraction, and in a third step, after the said extraction, the gallium is recovered in the organic phase and the rare earths in the aqueous phase, or the gallium is recovered in the aqueous phase and the rare earths in the organic phase.</p> |
