Wet disperser

A wet disperser for dispersing particulates in a mixture containing at least a dispersing medium and at least one kind of particulates selected from a group consisting of a primary particle and an aggregate, the wet disperser comprising:

• a through channel comprising an inflow port and an outflow port configured to serve as a through channel of the mixture and configured to extend from the inflow port to the outflow port;
• and
• a mixture-passing plate provided in a middle of the through channel and comprising at least one passing hole defined,
• wherein the through channel further comprises, on a downstream side of the through channel from a position provided with the mixture-passing plate, a dispersion part comprising a vibration body provided such that vibration causes at least a part of the vibration body to come into contact with at least a part of an opening periphery of the passing hole, and an inside surface defining the passing hole of the mixture-passing plate.