| 摘要 |
<p>1. A method of recovering the gallium contained in an aqueous solution of highly alkaline sodium aluminate by exchange of chemical species between a stationary phase consisting of a microporous adsorbent resin impregnated with a 7-alkenyl 8-hydroxy quinoline charge and the aqueous phase of sodium aluminate characterised by the fact that prior to impregnation the dry resin has a specific surface area, measured by the BET method, which is at least equal to 450 sq.m/g of resin, a pore volume at least equal to 1500 cu.mm/g of resin, a mean pore diameter of between 8.0 and 50.0 nm with at least 80% of this volume consisting of pores of a diameter comprised between 4.0 and 500.0 nm, an expansion rate in an aqueous medium not exceeding 20%, and in that it is impregnated with 7-alkyl or alkenyl 8-hydroxy in a proportion of 250 to 350 g per litre of dry resin.</p> |
