NOVELTY - A silicon regeneration apparatus has a solid-liquid separation unit (1), a washing unit (I) (3), a melting unit, a crushing unit (33) and a washing unit (II) (35). The solid-liquid separation unit separates a portion of slurry-waste in which waste silicon is mixed with slurry into solid and liquid, and solid content for silicon recovery is acquired. The washing unit (I) washes the acquired solid content using an organic solvent. The melting unit melts and solidifies the washed solid content, and a silicon-containing lump is obtained.    USE - Silicon regeneration apparatus is used for regeneration of silicon (claimed) from slurry-waste for manufacturing silicon wafer used as integrated circuit chip for solar cell.    ADVANTAGE - The silicon regeneration apparatus is capable of recovering silicon from slurry-waste by simple and efficiently.    DETAILED DESCRIPTION - A silicon regeneration apparatus has a solid-liquid separation unit, a washing unit (I), a melting unit, a crushing unit (33) and a washing unit (II). The slurry-waste contains waste silicon obtained by cutting or grinding of silicon block or silicon wafer using the slurry containing abrasive grains and a coolant. The solid-liquid separation unit separates a portion of slurry-waste in which waste silicon is mixed with slurry into solid and liquid, and solid content for silicon recovery is acquired. The washing unit (I) washes the acquired solid content using an organic solvent. The melting unit melts and solidifies the washed solid content, and a silicon-containing lump is obtained. The crushing unit crushes the silicon-containing lump, and a silicon-containing crushed component is obtained. The washing unit (II) washes the silicon-containing crushed component with acid aqueous solution, and then washes with water.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of the silicon regeneration apparatus.(Drawing includes non-English language text)    Solid-liquid separation unit (1)    Washing unit I (3)    Classification unit (5)    Crushing unit (33)    Washing unit II (35)