Title: Method of burning-in lining in bottom blown steelmaking furnace

Abstract: The burn-in of the refractory lining or of the refractory component of a tuyere-containing bottom plug in a bottom-blown oxygen steelmaking converter is effected with the plug in place by passing oxygen and a gaseous hydrocarbon mixed with controlled amounts of neutral gas through the respective concentric passages in tuyeres contained in the plug. The described method can be employed to burn-in a bottom plug installed in a converter together with a newly installed refractory converter lining or to burn in a newly installed bottom plug in an existing converter lining.

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Inventors: Frech, Louis W. (Chesterton, IN, US)
Hubble, David H. (Westmoreland County, PA, US)
Zook, Lewis J. (Merrillville, IN, US)

Application Number: 600232
Filing Date: 1975-07-30
Publication_date: 1976-03-30
Assignee: United States Steel Corporation (Pittsburgh, PA)
Primary Class(es): 266/47 264/30, 266/281
Other Classes:
US Patent Ref:

3610183	Oct, 1971	Kolboy et al.	266/41.
3897048	Jul, 1975	Pearce et al.	266/35.

Other Refs:
Primary Examiner: Dost, Gerald A.
Assistant Examiner:
Attorney: Carney; John F.