Refractory assembly with metal sheath to prevent molten metal breakthrough
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United States of America Patent
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Oct 12, 1993
Grant Date -
N/A
app pub date -
Jun 23, 1992
filing date -
Jul 12, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A refractory assembly for use in a sliding closure unit to control the discharge of molten metal from a metallurgical vessel includes a refractory plate having therethrough a discharge opening and having a sliding surface. A metal sheath is mounted exteriorly of the refractory plate. The sheath includes a protruding collar surrounding the discharge opening and extending in a direction away from the sliding surface beyond a portion of the refractory plate that confronts a refractory sleeve of the sliding closure unit to define therewith a joint. The protruding collar encloses the joint outwardly and thereby prevents molten metal breakthrough at the joint.
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