Device for producing wet granulated substance for electrode and method of producing the same

A method of producing a wet granulated substance for an electrode comprising:

• storing a solid component of the wet granulated substance that is a material for the electrode of a battery in a storage tank;
• supplying a liquid component of the wet granulated substance to the solid component stored in the storage tank;
• and
• rotating a stirring member in the storage tank and stirring the solid component and the liquid component together,
• wherein, when the liquid component is supplied,
• the liquid component drops from a nozzle that is provided above the storage tank;
• a pump provided upstream from the nozzle repeatedly switches between a first state in which a pressure is applied to the liquid component so that the liquid component drops from the nozzle and a second state in which a lower pressure than in the first state is applied to the liquid component so that the liquid component does not drop from the nozzle;
• a rotating member that is provided between the nozzle and the storage tank and has a disk shape with irregularities formed on an edge of the disk shape is rotated in a non-horizontal plane;
• the liquid component dropping from the nozzle is received in a recess of the rotating member facing upward due to rotation of the rotating member;
• and
• the liquid component received in the recess drops toward the storage tank when the recess in which the liquid component is received faces downward due to rotation,
• wherein the liquid component has a viscosity of 8000 Pa·s or less, and
• wherein the rotating member has a rotational speed of 200 to 800 rpm.