Swinging agitator for a gypsum calcining apparatus and the like

Agitating – Mortar mixer type – Methods

Reexamination Certificate

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Details

C366S102000, C366S276000, C366S332000

Reexamination Certificate

active

07434980

ABSTRACT:
An agitation mechanism for a gypsum processing apparatus which includes a housing having a bottom wall and at least one side wall. The housing can be constructed and arranged to receive and process gypsum-based products. An agitator frame having a similarly shaped cross-section to the cross-section of the housing is provided and positioned adjacent the bottom wall of the housing. The agitator frame is pivotally connected internally to the housing for reciprocating movement between first and second positions. The agitation mechanism is operable for preventing fluid channeling to ensure good fluidization of the gypsum products from collecting adjacent the bottom wall of the housing.

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Page from Babcock-BSH catalog showing rotary drum calciners with coolers. Germany. Such rotary calciners were first used in 1925.
Page from Krupp Polysius catalog showing POLCAL calcining system. Netherlands. One such calcining system was in use starting in 1993.
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