Shaft furnace having means for charging and adjusting a pre-mixt

Details Shaft furnace having means for charging and adjusting a pre-mixt Shaft furnace having means for charging and adjusting a pre-mixt

1987-08-25

1990-04-03

Andrews, Melvyn J.

Metallurgical apparatus

With control means responsive to sensed condition

With means responsive to condition of treated material

266176, 75469, 414161, C22B 724

Patent

active

049134060

ABSTRACT:
A method for operating a shaft furnace is performed by charging different ore/coke ratio mixture in radially different positions in the furnace. The ore/coke mixture ratio may be determined according to desired heat distribution in radial direction. For this, at least two mutually independently determined ore/coke mixture ratio mixtures are provided in each charge cycle of the burden. The mixture to be charged in the central portion of the furnace may have a higher coke content or a lower ore content for better permeability to the heating gas.

REFERENCES:
patent: 3799368 (1974-03-01), Wieczorek
patent: 4361315 (1982-11-01), Kajihara et al.
patent: 4599028 (1986-07-01), Mahr et al.

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