Cupola furnace

Details Cupola furnace Cupola furnace

1975-06-06

1977-11-08

Andrews, M. J.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By means introducing treating material

266239, 266900, 266230, F27B 120

Patent

active

040572315

ABSTRACT:
The invention relates to a process for automatically deslagging a cupola furnace and to an improved cupola furnace using this process.
According to the invention the bottom of the crucible is permanently connected to atmosphere via a siphon sill whose level is determined so that the interface between pig iron and slag is sometimes above and sometimes below this sill. The side wall of the cupola furnace has on the one hand a taphole for the pig iron opening into the crucible level with the hearth and which can be sealed with a plug and on the other air blowing tuyeres in the upper part of the crucible, as well as a siphon linked with the crucible for the supply thereof by means of a passage whose lower edge is adjacent to the bottom of the crucible and whose upper sill extends below the maximum permitted pig iron level determined by the siphon outflow, whereby the maximum permitted slag level is located below the nozzles.

REFERENCES:
patent: 3589699 (1971-06-01), Bogan

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