| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for refining a gallium-containing solution capable of inexpensively and readily removing molybdenum from the gallium-containing solution containing molybdenum as an impurity. <P>SOLUTION: An acid, such as a sulfuric acid, is added at temperature above≥85°C into an alkaline solution containing the molybdenum and the gallium to neutralize the solution to a pH 7 to 8.5 (reverse neutralization) and to allow the molybdenum to remain in the solution. Then, the precipitate obtained by filtration is dissolved in an alkaline, such as sodium hydroxide, and is used as a gallium electrolyte for recovering gallium metal by electrowinning. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
