Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1977-02-07
1978-07-25
Rutledge, L. Dewayne
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
48197R, 75 5, 266140, 266186, C22B 114
Patent
active
041026748
ABSTRACT:
Iron ore pellets on a grid in a treatment chamber are hardened by contact with a heat treated, low calorific gas. The gas is generated in the gasification chamber of a slag bath generator. The generator receives a gasification agent and solid fuel that preferably further includes sulfur-binding materials, such as dolomite for generating a stream of low calorific gas. Inclined water-cooled pipes at the upper end of the slag bath generator extract liquid slag from the gas stream. The slag drips from the pipes into the slag bath generator. A mixing chamber receives the gas at a temperature of about 1450.degree. C passed beyond the inclined water-cooled pipes together with an air supply for heat treating the gas to a temperature of about 1100.degree. C. The heat treated gas is then passed into the treatment chamber for hardening the iron ore pellets contained therein.
REFERENCES:
patent: 2934476 (1960-04-01), Zvejnieks
patent: 3853538 (1974-12-01), Nemeth
patent: 3870480 (1975-03-01), Moss
patent: 4013427 (1977-03-01), Gernhardt et al.
Maccormac, M., et al.; "The Gasification of Coal in an Experimental Rummel Double-Shaft Slag Bath Generator", IGE Journal (5/65) pp. 385-399.
Domann, F.; "Stand des Schlackenbadgenerators"; Internationale Zeitschrift fur Gaswarme, vol. 14 (1965) pp. 325-330.
Danguillier Wilhelm
Gernhardt Paul
Grams Wolfgang
Hundeshagen Christian
Osterloh Kurt
Dr. C. Otto & Comp. G.m.b.H.
Lewis Michael L.
Murray Thomas H.
Rutledge L. Dewayne
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