US 9,809,498 B2
Refractory coarse ceramic product and method for producing the same and its use
Hans-Juergen Klischat, Goettingen (DE); Carsten Vellmer, Goettingen (DE); and Holger Wirsing, Goettingen (DE)
Assigned to Refratechnik Holding GmbH, Ismaning (DE)
Appl. No. 15/103,030
Filed by Refratechnik Holding GmbH, Ismaning (DE)
PCT Filed Oct. 21, 2014, PCT No. PCT/EP2014/072569
§ 371(c)(1), (2) Date Jun. 9, 2016,
PCT Pub. No. WO2015/086204, PCT Pub. Date Jun. 18, 2015.
Claims priority of application No. 10 2013 020 732 (DE), filed on Dec. 10, 2013.
Prior Publication US 2016/0304403 A1, Oct. 20, 2016
Int. Cl. C04B 38/00 (2006.01); C04B 35/043 (2006.01); C04B 35/03 (2006.01); C04B 35/047 (2006.01); C04B 35/101 (2006.01); C04B 35/12 (2006.01); C04B 35/18 (2006.01); C04B 35/20 (2006.01); C04B 35/44 (2006.01); C04B 35/443 (2006.01); C04B 35/48 (2006.01); C04B 35/565 (2006.01); C04B 35/626 (2006.01); C04B 35/634 (2006.01); C04B 35/64 (2006.01)
CPC C04B 35/043 (2013.01) [C04B 35/03 (2013.01); C04B 35/047 (2013.01); C04B 35/0435 (2013.01); C04B 35/101 (2013.01); C04B 35/12 (2013.01); C04B 35/18 (2013.01); C04B 35/20 (2013.01); C04B 35/44 (2013.01); C04B 35/443 (2013.01); C04B 35/48 (2013.01); C04B 35/565 (2013.01); C04B 35/62695 (2013.01); C04B 35/63404 (2013.01); C04B 35/64 (2013.01); C04B 2235/3206 (2013.01); C04B 2235/3222 (2013.01); C04B 2235/3241 (2013.01); C04B 2235/3243 (2013.01); C04B 2235/3272 (2013.01); C04B 2235/349 (2013.01); C04B 2235/3445 (2013.01); C04B 2235/48 (2013.01); C04B 2235/5427 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5463 (2013.01); C04B 2235/5472 (2013.01); C04B 2235/602 (2013.01); C04B 2235/656 (2013.01); C04B 2235/77 (2013.01); C04B 2235/785 (2013.01); C04B 2235/963 (2013.01)] 21 Claims
OG exemplary drawing
 
1. 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.