NOVELTY - A silicon regenerator has a solid-liquid separation portion (1), a washing portion (3), and a classification portion (5). A waste slurry (AA) discharged from cutting/polishing device or a waste slurry concentrate is solid-liquid separated in the solid-liquid separation portion to obtain solid substance (BB) for silicon recovery. The solid substance is washed with an organic solvent and classified to obtain a silicon-containing powder (CC) having a higher silicon content and lower abrasive-grain content than before classification.    USE - Silicon regenerator is used for reclaiming silicon from waste slurry (claimed) ejected from manufacturing process of silicon wafers used in integrated circuits and solar cells.    ADVANTAGE - The silicon regenerator enables efficient reclamation of silicon from waste slurry, with reduced metal content.    DETAILED DESCRIPTION - A silicon regenerator has a solid-liquid separation portion (1), a washing portion (3), and a classification portion (5). A waste slurry (AA) discharged from a cutting device or a polishing device in which a slurry comprising abrasive grains and a coolant is used for silicon cutting or polishing, or a waste slurry concentrate obtained by concentrating the waste slurry is solid-liquid separated in the solid-liquid separation portion to obtain solid substance (BB) for silicon recovery. The solid substance is washed with an organic solvent in the washing portion. The washed solid substance is classified in the classification portion to obtain a silicon-containing powder (CC) having a higher silicon content and lower abrasive-grain content than before classification.    DESCRIPTION OF DRAWING(S) - The drawing shows the block diagram of the silicon regenerator. (Drawing includes non-English language text)    Solid-liquid separation portion (1)    Washing portion (3)    Classification portion (5)    Molding portion (11)    Heating portion (13)    Purification portion (15)    Waste slurry (AA)    Solid substance (BB)    Silicon-containing powder (CC)    Silicon-containing melt substance (EE)