Plant and method for regenerating sand from foundry cores and mo

Details Plant and method for regenerating sand from foundry cores and mo Plant and method for regenerating sand from foundry cores and mo

1982-12-28

1984-10-23

Camby, John J.

Heating

Processes of heating or heater operation

Including melting, vaporizing, sintering, expanding...

164 5, 432 15, 432 58, F27B 1400, F27B 1500

Patent

active

044785720

ABSTRACT:
The invention relates to plant (1) and to a method for regenerating sand from foundry cores and moulds by calcination in a fluidized-bed furnace (2), the main characteristic of which lies in the fact that the fumes leaving the calcining furnace are used to heat a current of air which is then used, in its turn, to heat the sand to be treated at its inlet to the calcining furnace, and in that the current of air cooled by the sand to be treated is then heated by means of the purified sand leaving the calcining furnace and is then used as combustion air in the calcining furnace.

REFERENCES:
patent: 2441594 (1948-05-01), Ramseyer
patent: 2821375 (1958-01-01), Andrews

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