Air pillow in the air chambers of a bottom pulsed jigging machin

Details Air pillow in the air chambers of a bottom pulsed jigging machin Air pillow in the air chambers of a bottom pulsed jigging machin

1987-06-01

1989-05-23

Freeh, William L.

Classifying, separating, and assorting solids

Stratifiers

With liquid treatment

209502, B03B 520

Patent

active

048328359

ABSTRACT:
A method and apparatus for treating minerals such as coal in a jig bed having a downwardly opening air chamber beneath the bed wherein the chamber has an air compartment at the upper end retaining a cushioned pillow of air between each jig pulsation with controlled air admitted and relieved from the chamber so that when air is relieved, the water rising in the chamber compresses the air at the upper end and a cushion of air is retained so that with admission of pressurized air, the cushion aids in forcing the column of water from the chamber, particularly at the beginning of operation of the jig.

REFERENCES:
patent: 3252574 (1966-05-01), De Koning et al.
patent: 3285414 (1966-11-01), Bosman
patent: 3890223 (1975-06-01), Stern
patent: 4019981 (1977-04-01), Stern
patent: 4559135 (1985-12-01), Strauss
Batac Jig Publication by Raymond E. Zimmerman entitled A New Improved Baum Type Jig for Cleaning Coarse and Fine Sizes of Coal, May 1974.

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