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US 4,438,906 AGranted
Formers for lining metallurgical vessels
AssigneeFoseco International Limited
InventorGary F. English
Life of this patent
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Abstract
A hollow, disposable former for use in forming a lining in a metallurgical vessel e.g. a ladle for holding molten metal comprises a plurality of connected adjacent wall portions of drywall having dimensions and configurations to provide an outer surface which corresponds to the desired inner surface of the lining to be formed. Preheating the vessel prior to its use for containing molten metal decomposes and collapses the disposable former thus rendering removal of the former unncessary
Claims16
A method of lining a metallurgical vessel for containing molten metal, comprising the steps of:
- (a) positioning within the vessel a hollow, disposable former comprising a plurality of connected adjoining wall portions of dry wall sheet material so as to leave a space between the former and the vessel corresponding to the lining of the vessel to be formed;
- (b) filling the space with hardenable refractory lining material;
- (c) while practicing step (b) filling the interior of the former with particulate material;
- (d) hardening the lining material;
- and
- (e) drying and firing the lining to produce a metallurgical vessel lined with refractory lining material.
3 more elements
Dependencies are inferred from the claim text.