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US 7,604,857 B2Granted
Fired refractory shaped part
AssigneeRefractory Intellectual Property GmbH & Co. KG
InventorsMira Müller, Martin Wiesel
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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.
Claims12
A fired refractory shaped part, the structure of which
- a) comprises at least 75 wt. % of a pre-fired refractory secondary material with a grain size up to 3 mm and
- b) has a pore volume between 10 and 30% that, after firing of the shaped part, was at least partially filled with a carbon containing material,
- c) the pore distribution of which is such that at least two maximums result if pore diameters are plotted (logarithmically) as a function of relative open porosity or pore distribution, wherein
- d) the carbon content, referred to the shaped part, amounts to >3 wt. %.
1 more element
Dependencies are inferred from the claim text.