Covering means for a top slag, method for the production thereof and use of the covering means
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United States of America Patent
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Sep 29, 2009
Grant Date -
Jan 4, 2007
app pub date -
Sep 29, 2003
filing date -
Dec 18, 2002
priority date (Note) -
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Abstract
The invention relates to a covering agent for a top slag of a metallic melt bath in a metallurgical vessel, in particular used in the steel industry, containing a material which melts on the melt bath and performs metallurgical work, wherein the material substantially comprises granules which have been rendered porous and the porosity of which is such that, at the melt bath temperature, a molten layer of liquid slag is formed on the melt bath, and a thermal barrier layer of the granules is formed above the molten layer of liquid slag. In addition, the invention relates to a process for producing the covering agent and to its use.
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