Grinding process and apparatus

Details Grinding process and apparatus Grinding process and apparatus

1985-05-14

1990-05-22

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

With separation or classification of material

241119, B02C 1500

Patent

active

049270869

ABSTRACT:
The invention relates to a grinding process and apparatus for the simultaneous production of at least two finished products of differing fineness using a ring mill. Pre-classification is carried out in the nozzle ring by adjusting the air to entrain and carry upwards relatively fine constituents. The coarser constituents are discharged downwardly by gravity and subsequently may be conveyed upwards by an elevator and subjected to a second classification in which at least a proportion is extracted as finished product.

REFERENCES:
patent: 1523881 (1925-01-01), Kreutzberg
patent: 3491954 (1970-01-01), Miller
patent: 3951347 (1976-04-01), Tiggesbaumker et al.
patent: 4240586 (1980-12-01), Evans

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