| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for efficiently recovering highly pure Pt from a Pt-containing liquid containing at least Ru, wherein contamination of Ru is extremely reduced in the Pt. <P>SOLUTION: The method for recovering Pt from the Pt acidic liquid containing at least Ru includes: a step of obtaining potassium chloroplatinate by adding potassium chloride to the Pt acidic liquid so that the molar ratio of potassium ion to Pt exceeds the stoichiometry; and a step of performing recrystallization by dissolving potassium chloroplatinate in water to prepare a mother liquor and adjusting its pH to 1-7. <P>COPYRIGHT: (C)2012,JPO&INPIT |
