Composite product with a tubular casing for treating molten metal baths
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United States of America Patent
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Sep 5, 1989
Grant Date -
N/A
app pub date -
Jan 26, 1988
filing date -
Feb 3, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a composite product of substantial length for the treatment of metal baths which is formed by a tubular metal casing (2) within which are housed the treatment material or materials in powder form and which comprises an axial zone (4) containing a first material surrounded by a tubular metal intermediate wall (3) and an annular zone (6) between the casing and the intermediate wall and which also contains a second material. Such a composite product in which the axial zone contains at least one element selected from calcium and magnesium can be used in particular for the desulphurization of iron or steel baths.
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