Refractory coarse ceramic product and method for producing the same and its use
AssigneeRefratechnik Holding GmbH
InventorsHans-Juergen Klischat, Carsten Vellmer, Holger Wirsing
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Abstract
A refractory, coarse ceramic product including at least one granular refractory material, has an open porosity of between 22 and 45 vol.-%, in particular of between 23 and 29 vol.-%, and a grain structure of the refractory material, wherein the medium grain size fraction with grain sizes of between 0.1 and 0.5 mm is 10 to 55 wt.-%, in particular 35 to 50 wt.-%, and wherein the remainder of the grain structure is a finest grain fraction with grain sizes of up to 0.1 mm and/or coarse-grain fraction with grain sizes of more than 0.5 mm.
Claims21
A working casing in a large-volume industrial furnace, wherein the working casing comprises a coarse refractory product in a form of pressed shaped bricks or in a form of an unshaped monolithic lining,
- wherein the coarse ceramic refractory product comprises at least one grainy refractory material, an open porosity between 22 and 45 vol %, and a grain structure of the refractory material in which a medium-grained fraction with grain sizes between 0.1 and 0.5 mm amounts to 10 to 55 wt %, and
- wherein the rest of the grain structure is a flour-grained fraction with grain sizes up to 0.1 mm and/or a coarse-grained fraction with grain sizes over 0.5 mm.
Dependencies are inferred from the claim text.