| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of efficiently separating selenium, tellurium, and a platinum group from a selenium, tellurium, and platinum group-containing material. <P>SOLUTION: The treatment method of separating selenium, tellurium, and a platinum group from a selenium, tellurium, and a platinum group-containing material includes: an alkali leaching stage where a selenium, tellurium, and platinum group-containing material is mixed into an alkali solution, are subjected to alkaline leaching, and are separated into a selenium, tellurium-containing leach liquid and a platinum group-containing leach residue; and an alkali melting stage where a mixture of caustic soda and nitric acid soda is added to a selenium, tellurium, and platinum group-containing material, heating is performed to the melting temperature of the mixture or above to dissolve selenium, tellurium, and the mixture is subjected to water leaching so as to be separated into a selenium, tellurium-containing leach liquid and a platinum group-containing leach residue. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
