Process and apparatus for preheating and inserting scrap into a

Details Process and apparatus for preheating and inserting scrap into a Process and apparatus for preheating and inserting scrap into a

1994-07-29

1996-03-12

Kastler, Scott

Metallurgical apparatus

With means treating or handling gases exhausted by treating...

By means recycling exhaust gas

266901, C21B 722, C21C 538

Patent

active

054979773

ABSTRACT:
The invention is directed to a process and apparatus for preheating and transferring scrap into smelting furnaces for steelmaking or the like. The scrap is preheated by energy contained in the waste gases from the smelting furnace, which energy comprises sensible heat and chemically bonded heat in the combustible portions of the waste gases. The furnace-waste gases are guided to a waste-gas combustion chamber incorporated in a waste-gas outlet line and are burned therein with air to generate hot combustion gases which are fed to the scrap in the receptacles at a preheating station and then sucked out via an exhaust fan. After the scrap reaches the desired temperature, the receptacle containing the preheated scrap is removed from the preheating station so that the preheated scrap may be transferred to the smelting furnace. During this receptacle changeover process, the hot combustion gases are rerouted to another scrap-filled receptacle at the preheating station using a pipeline arrangement.

REFERENCES:
patent: 4470804 (1984-09-01), Geijer et al.
patent: 4775134 (1988-10-01), Patuzzi et al.
patent: 4812117 (1989-03-01), Granstrom
patent: 5000425 (1991-03-01), Brandstrom

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