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Separation and recovery of valuable metals such as zinc, nickel or tin from copper alloy dross hasrecently attracted from the viewpoints of environmental protection and resource recycling. In this report, prelimi-nary study on concentration and separation of tin from copper alloy dross using selective dissolution method wasperformed. The tin in the copper alloy dross did not dissolve in the nitric acid solution which could allow the con-centration and separation of the tin from the copper alloy dross. Precipitation of tin as H 2 SnO 3 (metastannic acid)occurred in the solution and transformed to tin dioxide (SnO 2 ) after drying process. The dried sample was heat-treated at low temperature and its phase characteristics, surface morphology and chemical composition wereinvestigated. (Received May 24, 2013; Revised June 4, 2013; Accepted June 14, 2013)Key words : Separation of Sn, Copper alloy dross, Selective dissolution, SnO 2 1.  (SnO 2 )      3.5 eV              ITO          [1, 2].                    [3].    ,                     .                    [4, 5].,             , / ,      .   ,     , ,     ,       ,     [6].         ,

Recovery of Sn from Copper Alloy Dross by a Selective Dissolution and Its Heat-treatment for the Synthesis of SnO2

Recovery of Sn from Copper Alloy Dross by a Selective Dissolution and Its Heat-treatment for the Synthesis of SnO₂