Melting process

Details Melting process Melting process

1977-01-31

1977-11-29

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 44S, 75 65R, C22B 2100

Patent

active

040604080

ABSTRACT:
A process is disclosed for burning hydrocarbons in the vapors emitted from contaminated metallic scrap in a remelt furnace having a molten bath therein. The furnace comprises a charging chamber and a heating chamber separated by a wall. The wall is provided with at least one lower opening and at least one upper opening through which the chambers are in communication above and below the level of molten metal. Scrap is charged into the charging chamber where molten metal ablatively melts the charge. Oil and other surface contaminants evolving from the charge are drawn through the upper opening in the wall into the heating chamber by maintaining a pressure in the heating chamber less than, or negative in relation to, the pressure in the charging chamber. The hydrocarbon vapors burn in the heating chamber and contribute heat of combustion. Controlling the level of pressure differential between the heating chamber and the charging chamber facilitates substantial benefits in efficiency and economy.

REFERENCES:
patent: 2089742 (1937-08-01), Garwin
patent: 2204173 (1940-06-01), Bowser
patent: 2264740 (1941-12-01), Brown
patent: 2465544 (1949-03-01), Marsh
patent: 3276758 (1966-10-01), Baker et al.
patent: 3510116 (1970-05-01), Harvill et al.
patent: 3839016 (1974-10-01), Rawlings
patent: 3869112 (1975-03-01), Habayeb

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