| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and method for metal recovery, capable of directly performing solid-liquid separation of a crystal particle of a fine metal compound precipitated in water, without requiring a special reaction operation.SOLUTION: The metal recovery apparatus has: a precipitation tank 2 for precipitating the crystal particle of the metal compound from the water to be treated that contains a metal ion; a filter aid supply device 5 for supplying a filter aid having an average particle size of 0.5-20 μm in a free particle or aggregate containing a magnetic material; a mixing tank 6 for mixing the filter aid supplied from the filter aid supply device 5 with a dispersion medium; a solid-liquid separator 3 having a filter 33 for filtering a mixture supplied from the mixing tank 6 and for filtering the water to be treated that is supplied from the precipitation tank 2 to form a deposition layer of a metal compound crystal particle with the filter aid in the mixture; and a separation tank 4 for separating the metal compound crystal particle and the filter aid included in an exfoliated matter discharged from the solid-liquid separator 3 with the exfoliation water. |
