Gas sink in the form of an interstitial flushing device
AssigneeHorst Knollinger
InventorPeter Wandschneider
Life of this patent
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Abstract
The invention concerns a gas-porous plug in the form of an interstitial flushing device in which the gas passage ducts are in the form of interstices. The opposite walls of the interstices are monolithically interconnected by flat bridges of refractory material. The gas-porous plug can be produced by means of a conical hollow body (1) whose side wall (2) comprises apertures (3). The hollow body (1) is inserted into a casting mould (4) which is subsequently filled with a refractory casting compound.
Claims17
A gas-porous plug for metallurgical vessels comprising an inner body surrounded by an outer body with a peripheral gap therebetween, said peripheral gap being spanned by a plurality of bridges, and said inner and outer bodies and said plurality of bridges being a single piece of monolithic refractory material.
A method of manufacturing a gas-porous plug comprising the steps of:
- (a) providing a sleeve having a plurality of aperture extending transversely therethrough,
- (b) inserting the sleeve in a mould having an interior moulding surface spaced from an exterior surface of said sleeve,
- (c) casting a refractory casting compound interiorly and exteriorly of said sleeve and in said apertures, and
- (d) burning or melting out the sleeve to thereby form the gas-porous plug as a one-piece monolithic casting defined by substantially spaced inner and outer bodies joined by a plurality of bridges therebetween.
Dependencies are inferred from the claim text.