| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for recovering noble metals where noble metals can be efficiently recovered and recycled from a noble metal-containing disposal material disposed of from various fields. <P>SOLUTION: In the method for recovering noble metals, flux is added to a noble metal-containing disposal material and a silver-containing disposal material, so as to be mixed and melted in a melting furnace, so as to be separated into glassy slag and metal, thereafter, the separated metal is transferred to an oxidizing furnace, flux is added in the oxidizing furnace, oxidation treatment is performed, so as to be separated into oxide slag and a noble metal-containing silver alloy, the separated noble metal-containing silver alloy is, if required, subjected to compositional regulation, is cast, and is thereafter subjected to silver electrolysis, so as to be electrodeposited silver, the silver is recovered, and the noble metals are subjected to wet treatment, so as to be stepwise recovered from electrolytic sludge. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
