Importance

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Abstract

It is an object of the present invention to provide a stirring apparatus which can exhibit excellent stirring characteristics in a wide range of viscous regions and which can reduce the mixing time. A stirring apparatus includes a stirred tank having a bottomed cylinder shape, a rotation shaft concentrically or substantially concentrically disposed inside the stirred tank, and a bottom blade that extends from the rotation shaft so as to extend in a radial direction and a vertical direction, of the stirred tank, and a lower edge of the bottom blade has a shape conforming to a bottom wall surface of the stirred tank. Here, a clearance is formed between the lower edge of the bottom blade and the lower wall surface and the clearance satisfies the following condition: 1% of the inner diameter of the stirred tank

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First Claim