Method for cooling aged board material

Details Method for cooling aged board material Method for cooling aged board material

1978-05-10

1980-02-12

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 15, 34 16, F26B 700, F26B 504

Patent

active

041876164

ABSTRACT:
A method of cooling board materials of inorganic substance wherein after aging treatment in an autoclave using saturated steam of high temperature and high pressure, the board material is left in the autoclave and the pressure therein is reduced to less than one atmosphere, and then the reduced pressure is retained at a stationary state until the temperature of the board material falls to about the temperature at which water does not boil, and then removing the board material from the autoclave. The board material may also be subjected to a drying treatment by alternately supplying saturated steam and reduced pressure after aging and prior to cooling.

REFERENCES:
patent: 1678559 (1928-07-01), Devine
patent: 2874481 (1959-02-01), Lofgren et al.

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