Slurry storing and mixing device
An object is to provide a slurry storage and stirring device which can sufficiently flow even a high-concentration slurry by a simple means and is excellent in stirring properties. Disclosed is a slurry storage and stirring device including a container which stores a slurry containing particles and a solvent, and in this device, the container has an inner wall provided inside the container and formed of a porous body which passes a gas supplied to the container through the porous body to generate fine bubbles in the slurry.
1 . A slurry storage and stirring device comprising a container which stores a slurry containing particles and a solvent,
wherein the container has an inner wall provided inside the container and formed of a porous body which passes a gas supplied to the container through the porous body to generate fine bubbles in the slurry,
the porous body comprises pores having an average pore diameter which does not allow the solvent of the slurry to pass through the porous body,
the container has a cylindrical portion having a cylindrical shape on an upper side in a vertical direction, and has a conical-shaped cone portion under the cylindrical portion; wherein the cone portion has a cross-sectional area gradually decreasing downward;
wherein the cone portion has a top side and a bottom side and each inner surface of the top side and the bottom side are formed with inclined portions, and the porous body is disposed on the bottom side and occupies an area of 10% or more of inner surfaces of the entire inclined portions,
the cone portion is configured by directly combining and connecting two components of a first cone portion on the bottom side and a second cone portion on the upper side; and
the inner wall is only in the first cone portion;
wherein at least a portion on the bottom side of the cone portion has a double structure of an inner body having the inner wall in at least a part of the inner body and an outer body provided outside the inner body, and the inner body has a bowl shape having a closed bottom.
2 . The slurry storage and stirring device according to claim 1 , wherein each inner surface of the top side and the bottom side has an inclination angle of 25 to 50° with respect to the vertical direction.
3 . The slurry storage and stirring device according to claim 1 , wherein the inner body and the outer body are provided to be spaced apart from each other, and
a supply port configured to supply the gas to a space between the inner body and the outer body is provided at a bottom of the outer body.
4 . The slurry storage and stirring device according to claim 1 , wherein the inner body and the outer body are configured to be separable from a main body portion comprising the top side of the cone portion and the cylindrical portion.
5 . The slurry storage and stirring device according to claim 1 , wherein the porous body comprises pores having an average pore diameter of 3 μm or more and 30 μm or less.
6 . The slurry storage and stirring device according to claim 1 , wherein the porous body comprises pores having an average pore diameter of 3 μm or more and 20 μm or less.
7 . The slurry storage and stirring device according to claim 1 ,
wherein a material of the porous body is metal material.
8 . The slurry storage and stirring device according to claim 1 , further comprising a defoaming device in the container.
9 . The slurry storage and stirring device according to claim 8 , wherein the defoaming device is a stirring machine having a stirring portion which is a stirring blade rotatable in the container.
10 . The slurry storage and stirring device according to claim 8 , wherein the defoaming device is a stirring machine having a stirring portion which is a centrifugal stirring member.