Multi-purpose zone controlled blast furnace and method of produc

Details Multi-purpose zone controlled blast furnace and method of produc Multi-purpose zone controlled blast furnace and method of produc

1980-06-12

1983-05-03

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

48210, 65 19, 75 91, 106103, 208 11R, C21B 506

Patent

active

043819389

ABSTRACT:
Disclosed are methods of precisely operating an improved zone controlled multi-purpose blast furnace mainly by closely controlling gaseous inputs and outputs made through multiple openings in the side of the furnace. The energy can be partially or completely, directly or indirectly, obtained from low cost solid carbonaceous fuels used to produce hot metal, gases and slags, products. "Solution loss" is avoided when operating in a high hot metal production mode but the Boudouard reaction is efficiently employed when operating to produce gases and slags. Gas flows are regulated on the basis of information obtained from on-line samples and performance-impairing recycling alkali metals and zinc may be purged while in a volatile form.

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