THE TECHNOLOGY OF VALUABLE METAL RECOVERIN FOR GREEN ENERGY FORM ELECTRIC WASTE

摘要

PURPOSE: A technology for recovering environment-friendly valuable metal from electronic waste is provided to smoothly take valuable metal from electronic waste since oil and tar are removed through leaching three times. CONSTITUTION: A technology for recovering environment-friendly valuable metal from electronic waste is related to what electronic waste is converted to valuable metal using a wet process. The technology comprises a wet valuable-metal leaching technique comprising environment-friendly three processes, which can minimize energy cost. Foreign materials and tar can be removed using hydrogen peroxide in first and third leaching processes. Various kinds of valuable metal are leached through the hydrogen peroxide and the three leaching processes. The valuable metal is leached at a temperature of below 150C, at a pressure of below 5Kg/Cm^2 in the leaching processes.