Screw mill

Details Screw mill Screw mill

B - Operations, Transporting

02

C

241/21

B02C 19/22 (2006.01)

Patent

CA 1285543

ABSTRACT OF THE DISCLOSURE A screw mill, for example, used for producing fine powder grains of calcium carbonate used as bulking agent for paper. According to the screw mill of the present invention, the combination of the continuous screw and discontinuous vanes makes it possible to efficiently grind both the slurry and dry materials without causing cogging of the mill. Also the clearance between the hub and the rotor can be finely adjusted by the screw type adjustor. This makes it possible to easily adjust the grain size and to produce the ground materials having the spheroidicity of 0.3 - 0003 which are best suited for the bulking agent for paper.

552052

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