| 摘要 |
<p>PURPOSE:To well remove In an V from a Ga electrolytic soln. by adding an alkali metal oxalate to the electrolytic soln. and filtering off a formed precipitate contg. In. CONSTITUTION:An alkali metal oxalate such as potassium oxalate is added to a Ga electrolytic soln. to form KIn(C2O4) as a precipitate and this precipitate is filtered off. Thus, In can be separated and removed from the Ga electrolytic sln. When V is removed from the electrolytic soln., an alkaline earth metal hydroxide or oxide such as Ca(OH)2 is added to the soln., the soln. is heated to precipitate the V as calcium canadate and this precipitate is filtered off. In case where the Ga electrolytic soln. contains both In and V, potassium oxalate and Ca(OH)2 are simultaneously added to simultaneously precipirate KIn(C2 O4)2 and calcium vanadate, which are then filtered off.</p> |
