Refractory exothermic heating insulating articles
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United States of America Patent
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-
May 6, 1980
Grant Date -
N/A
app pub date -
Jul 14, 1978
filing date -
Jul 19, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Refractory articles are described which are of use e.g. as hot top lining slabs or riser sleeves in the metallurgical industry. The slabs are both heat insulating and they have exothermic properties when contacted by molten metal. The articles comprise by weight 8 to 20% of a particulate oxidizable metal, 5 to 25% of fibrous refractory material and 5 to 20% of an expanded perlite having a bulk density (untamped) of less than 0.15 g/cc. The overall density of the article is less than 0.75 g/cc.
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