Stirring bead mill with separator to strain out grinding beads

Details Stirring bead mill with separator to strain out grinding beads Stirring bead mill with separator to strain out grinding beads

1995-12-28

1997-05-20

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

With separation or classification of material

241171, 241172, B02C 1716

Patent

active

056305575

ABSTRACT:
The invention relates to a stirring mill in whose grinding tank, provided with an inlet and an outlet, and charged with a load of grinding beads, a stirring shaft (stirring mechanism) provided with stirrers, is rotatable, on which, for holding back the grinding beads a separator is mounted ahead of the outlet and is provided with radial openings. The invention is addressed to the problem of creating a stirring mill with a grinding bead separator whose separation limit corresponds to the upper grain size of the fines, by which sieves or filters for holding back the grinding beads are avoided, and which nevertheless sufficiently assures that no grinding beads or particles of dispersants can enter into the finish-ground product. This problem is solved by the fact that the separator is formed by a rotor in the manner of a centrifugal force sifting rotor (6) wherein the passages are formed by the interstices or spaces between every two sifter rotor paddles (10).

REFERENCES:
patent: 3653600 (1972-04-01), Shold
patent: 4754934 (1988-07-01), Ikebuchi et al.
patent: 4860957 (1989-08-01), Lidstr om
patent: 5197680 (1993-03-01), Chauveau
patent: 5330112 (1994-07-01), Nagaoka et al.
Ullmanns Encyklop adie der technischen Chemie; 4., neubearbeitete und erweiterte Auflage, Band 2, Verlag Chemie, Weinheim/Bergstr. 1972; pp. 67-68 entry for "Korbsichter" (Basket Sifter).

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