Grinding mill diaphragm discharge system

Details Grinding mill diaphragm discharge system Grinding mill diaphragm discharge system

1978-07-24

1980-01-29

Goldberg, Howard N.

Solid material comminution or disintegration

Apparatus

With separation or classification of material

241171, B02C 1722

Patent

active

041857852

ABSTRACT:
This invention is directed to an improved rotary grinding mill such as a ball mill, rod mill or an autogenous mill, having an improved arrangement wherein the usual "overflow" or "grate discharge" arrangements are dispensed with in favor of an annular array of lifter segments providing a diaphragm having a radial clearance from the mill shell, being spaced from the inner surface of the mill head to provide an annular entry slot of restricted opening, with a plurality of lifter blades located therein. The improved mill permits the maintenance of favorable flow gradients within the mill while allowing the carrying of a maximum usable quantity of grinding media, despite increases in mill size that militate against the combination. The discharger provides a sufficient intake area that large throughputs may be accommodated, while avoiding many of the drawbacks associated with grates.

REFERENCES:
patent: 1770977 (1930-07-01), Fowden
patent: 2405633 (1946-08-01), Barker
patent: 2948481 (1960-08-01), Daman
patent: 3231203 (1966-01-01), Hardinge et al.
patent: 3294325 (1966-12-01), Nelson
patent: 3599882 (1971-08-01), Sabaski et al.

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