▎ 摘　　要

NOVELTY - Recovery of metal involves (a) mixing a material with a conductive additive to form a mixture, (b) applying a voltage across the mixture to recover metal from the material, in which (i) the voltage is applied in one or more voltage pulses and (ii) duration of each of the one or more voltage pulses is for a duration period and (c) collecting the recovered metal. The recovering and collecting of the metal is performed by leaching process after applying the voltage across the mixture. The material is prepared from ores, fly ash, and/or bauxite residue. USE - Recovery of metal such as precious metal such as rare earth element (all claimed) from ores, fly ash, and bauxite residue (red mud) from waste of modern electronics, clean energy, and automotive industries. ADVANTAGE - The method enables to recover metal from ores, fly ash, and bauxite residue (red mud) in an ultrafast flash Joule heating synthesis method, which is highly efficient and low-cost synthesis of nanomaterials is the prerequisite for their commercial applications. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a system for recovering metal.