Wet particle storage tank

A wet particle storage tank comprising a tank body configured to store wet particles containing particles and a solvent, wherein the tank body includes:

• an upper storage section having a supply port through which the wet particles are supplied;
• a lower storage section located below the upper storage section and having a discharge port through which the wet particles are discharged;
• and
• a bridge forming section provided between the upper storage section and the lower storage section, the bridge forming section being configured to facilitate formation of a bridge by the wet particles to block falling of the wet particles from the upper storage section to the lower storage section, wherein:
• the upper storage section and the lower storage section are formed in a cylindrical shape having a central axis that extends in a direction connecting the upper storage section and the lower storage section,
• the bridge forming section has a neck portion formed at an axial central region of the bridge forming section, and
• a cross-sectional area of the neck portion in a first plane perpendicular to the central axis is smaller than a cross-sectional area of a lower end portion of the upper storage section in a second plane perpendicular to the central axis, and is smaller than a cross-sectional area of an upper end portion of the lower storage section in a third plane perpendicular to the central axis.