Refractory, heat insulating articles
AssigneeFoseco Trading A.G.
InventorsMichel S. Boily, James Flood
Life of this patent
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Abstract
The invention relates to preformed, shaped, refractory, heat-insulating articles for use in an expendable sidewall lining of a molten metal handling vessel. The lining has a face at part of which is exposed a zone of matter of high resistance to erosion by molten metal and accompanying slag. The vessel may be e.g. a tundish for use in the continuous casting of molten metal e.g. steel.
Claims20
A preformed, shaped, refractory heat insulating article for use as an expandable sidewall lining of a molten metal handling vessel, said article having first and second major faces, and a plurality of edge faces defining collectively said major faces, the area of each of said major faces being much larger than that of said edge faces;
- and said first major face adapted to contact molten metal, while said second major face, and most portions of said edge faces, are not adapted to contact molten metal;
- said first major face including a first part formed of a low specific heat and low thermal conductivity material, and a second part formed of a different material than the material of the first part, said material of the second part having a higher erosion resistance to molten metal and slag than the material of the first part.
A molten metal handling vessel having a top and a bottom, and sidewalls, and having an expendable sidewall lining comprising at least one article, said article comprising a preformed, shaped, refractory heat insulating article having a face having a first part formed of a low specific heat and thermal conductivity material, and having a second part formed of a different material than the material of said first part, said material of the second part having a higher erosion resistance to molten metal and slag than the material of the first part;
- said article disposed within said vessel so that at least a portion of said first part and a portion of said second part face into the vessel and said material of the second part extends essentially continuously generally horizontally across the width of said article.
A preformed, shaped, refractory heat insulating article for use as an expendable sidewall lining of a molten metal handling vessel, said article having a face including a first part formed of a low specific heat and low thermal conductivity material, and a second part formed of a different material than the material of the first part, said material of the second part having a higher erosion resistance to molten metal and slag than the material of the first part;
- and wherein the material of the second part is wholly or partly in a recess in the face of the article.
A preformed, shaped, refractory heat insulating article for use as an expendable sidewall lining of a molten metal handling vessel, said article having a face including a first part formed of a low specific heat and low thermal conductivity material, and a second part formed of a different material than the material of the first part, said material of the second part having a higher erosion resistance to molten metal and slag than the material of the first part;
- and wherein said second part comprises a small zone within said first part, said zone extending less than the entire thickness of said article.
A preformed, shaped, refractory heat insulating article for use as an expendable sidewall lining of a molten metal handling vessel, said article having a face including a first part formed of a low specific heat and low thermal conductivity material, and a second part formed of a different material than the material of the first part, said material of the second part having a higher erosion resistance to molten metal and slag than the material of the first part;
- and further comprising a third part comprising a backing layer for backing said first part and said second part, the material of said third part having a lower specific heat and lower thermal conductivity than the material of said first part, and said material of said second part having a higher erosion resistance to molten metal and slag than the material of said third part.
Dependencies are inferred from the claim text.