Fired refractory shaped part
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United States of America Patent
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Oct 20, 2009
Grant Date -
Jan 8, 2009
app pub date -
Jun 2, 2005
filing date -
Jun 17, 2004
priority date (Note) -
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Abstract
The invention relates to a fired refractory shaped part whose structure: a) consists of up to at least 75% by weight of a pre-fired refractory secondary material with a grain size of up to 3 mm, and; b) has an open pore volume ranging from 10 to 30% that, after firing, is filled, at least in part, with a carbon-containing material, whereby; c) the carbon content is >3% by weight with regard to the shaped part.
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