Apparatus for treating waste materials

Metallurgical apparatus – With control means responsive to sensed condition – With pressure sensor

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Details

266205, 266217, 266241, 266901, 373 81, C21C 552

Patent

active

058796177

ABSTRACT:
A method and apparatus for treating residual or waste materials that can be recycled energetically, especially light-weight refuse from shredders, which, reduced in size and classified, are stored in bunkers. The residual or waste material is fed by portions from the bunkers to a supply trough in a metal melting furnace, especially an electric arc furnace for melting steel. After a predetermined time, the residual material is placed by portions into a sluice that can be closed in a gas-tight manner. After the sluice is closed, the residual material is subjected to an oxygen-containing gas, the pressure of which is higher than the pressure at the furnace head of the metal melting furnace, until the pressure within the sluice exceed the pressure in the furnace head. The sluice output opening facing toward the furnace vessel bottom is opened after the pressure within the sluice exceeds the pressure in the furnace head and the residual material is conveyed pneumatically into the chamber part. Nozzles in the chamber part inject oxygen into the shaft to encourage combustion and to assist the acceleration of the residual or waste material through the chamber and into the bottom area of the furnace. The residual material is then submerged in the metal melt located in the bottom area of the metal melting furnace for complete conversion or incineration.

REFERENCES:
patent: 3812620 (1974-05-01), Titus et al.
patent: 4199350 (1980-04-01), Kutscher et al.
patent: 5445363 (1995-08-01), Becerra-Novoa et al.
patent: 5492309 (1996-02-01), Meierling et al.
patent: 5554206 (1996-09-01), Czermak et al.

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