Metallurgical apparatus – With means treating or handling gases exhausted by treating... – By separating particles from evolved gas
Patent
1988-11-14
1989-12-12
Andrews, Melvyn J.
Metallurgical apparatus
With means treating or handling gases exhausted by treating...
By separating particles from evolved gas
266160, 266172, 75 26, 75 38, F27B 1500
Patent
active
048862460
ABSTRACT:
A metal-making apparatus is suited for the production of molten iron from iron ore which is in a state of particles with a wide range in size. Included are a solid-state prereduction furnace for preliminarily reducing the raw ore particles in a solid state, and a smelting reduction furnace for smelting the prereduced ore particles and reducing them in a molten state. High temperature reducing gas generated within the smelting reduction furnace is directed into the prereduction furnace and blown up through a distributor on which there is loaded a charge of raw ore particles. The ore particles of larger size form a fluidized bed on the distributor and so are prereduced by making intimate contact with the gas. Ore particles of smaller size, on the other hand, are carried away from the fluidized bed by the waste gas and thereby prereduced while being recirculated through the prereduction furnace. Discharged from the prereduction furnace, the prereduced ore particles of larger size are recharged by the force of gravity into the smelting reduction furnace. The prereduced ore particles of smaller size are recovered from the waste gas and pneumatically injected into the smelting reduction furnace.
Kishimoto Mitsuharu
Maeda Takuya
Murakami Keikichi
Takemura Yoshihiko
Yajima Kenichi
Andrews Melvyn J.
Kawasaki Jukogyo Kabushiki Kaisha
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