Apparatus for preparing binder-free hot-briquets

Details Apparatus for preparing binder-free hot-briquets Apparatus for preparing binder-free hot-briquets

1985-05-16

1987-02-24

Andrews, Melvyn J.

Metallurgical apparatus

With control means responsive to sensed condition

With means supplying a treating agent

266 87, 266173, 266176, 75256, 425 78, F27D 1900

Patent

active

046451846

ABSTRACT:
The invention relates to a process and an apparatus for preparing binder-free hot-briquets for smelting purposes from ferrous pyrophorous, finely divided solids, such as dry steelmaking-filter dust or slightly granular sponge iron from direct-reduction plants. Before the briquetting stage, oxidizing gas is blown at a temperature of more than 200.degree. C. through the finely divided dry solid containing more than 4% by weight of metallic resin. The flow rate of this gas is controlled in such a way that oxidation of some of the metallic iron raises the temperature of the finely divided solid to 450.degree. C. to 650.degree. C. This is followed by hot-briquetting.

REFERENCES:
patent: 2287663 (1942-06-01), Brassert
patent: 4147334 (1979-04-01), Lafont et al.
patent: 4165978 (1979-08-01), Sanzenbacher et al.

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