Apparatus for the production of calcium silicate-containing ston

Details Apparatus for the production of calcium silicate-containing ston Apparatus for the production of calcium silicate-containing ston

1982-12-15

1984-06-26

Czaja, Donald E.

Plastic article or earthenware shaping or treating: apparatus

Female mold, pallet handling means and means to charge...

425414, B28B 500, B28B 1300

Patent

active

044564490

ABSTRACT:
An apparatus for the production of calcium silicate based stone blanks including at least one mold into which a crude mixture is poured, the mixture comprising granulated silicate-containing material, lime, water, a cement and foam. The mold has a cover, a bottom and side plate, with one of the plates being movable to open and close the mold. The crude mixture is heated in the mold essentially uniformly to a temperature between 45.degree. C. and 90.degree. C. until achieving the desired blank-strength by strength-forming reactions of the cement in the crude mixture. The heater used for this purpose is a high frequency voltage heater using two parts of the mold as condensor plates connectable with a high frequency voltage source. The formed stone blanks are thereafter removed from the mold and transferred to a transport station.

REFERENCES:
patent: 986701 (1911-03-01), Frerichs
patent: 1970245 (1934-08-01), Morse
patent: 2003702 (1935-06-01), Straub

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