To provide a wet smelting method capable of reducing the total amount of process water within a process system.
A wet smelting method includes: a chlorine leaching step of subjecting an intended metal contained in a sulfide to chlorine leaching; a first solid-liquid separation step of solid-liquid separating a slurry discharged from the chlorine leaching step into a leaching residue and a leachate; a repulping step of making the leaching residue into a slurry by adding repulping water thereto; and a second solid-liquid separation step of solid-liquid separating the slurry into a leaching residue and a separated liquid, in which a part of the separated liquid is supplied as the repulping water to the repulping step. The amount of new water can be reduced by the amount a part of the separate liquid used as the repulping water, and the total amount of process water within the process system can be consequently reduced.
AMANO OSAMU
TANAKA TAKEHIRO
Hiroshi Nakai
Shin Yamauchi
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