Apparatus for the production of building units from afterhardeni

Details Apparatus for the production of building units from afterhardeni Apparatus for the production of building units from afterhardeni

1988-04-26

1990-04-17

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Building forms or construction engineering type mold with...

Including mold charging means

249 20, 249 22, 249108, 264 82, 264 87, 264DIG43, 425 74, 425 75, 425 85, 4253021, 425583, 425585, B28B 1700, E04G 2106

Patent

active

049175874

ABSTRACT:
The invention relates to an apparatus for the production of building units from an afterhardening mixture containing cement and/or lime as binding material. The raw mixture is continuously fed and pressed by stamping into a die with CO.sub.2 gas at a pressure higher than atmospheric being passed through the raw mixture in the die space. Through an instantaneous reaction of carbonation, the material is hardened to a formed body. The CO.sub.2 gas is prevented from escaping by a gastight seal in the vicinity of the inlet port of the die. Further towards the outlet port, the pressure of the CO.sub.2 gas is decreased. In the vicinity of the outlet port only as much CO.sub.2 gas is fed as is necessary for the completing of the chemical reaction. Thus, any loss of gas will be minimized. The continuously discharged body is cut to size by using a saw.

REFERENCES:
patent: 1899708 (1933-02-01), Miller
patent: 2501595 (1950-03-01), Bohannon
patent: 2604659 (1952-07-01), Eppler
patent: 3826411 (1974-07-01), Kalns
patent: 4093690 (1978-06-01), Murray
patent: 4156587 (1917-05-01), Christian
patent: 4436498 (1984-03-01), Murray
patent: 4746481 (1988-05-01), Schmidt

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