Aerated refractory, method for producing high-temperature...

Compositions: ceramic – Ceramic compositions – Refractory

Reexamination Certificate

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C501S112000, C106S018110, C106S018140, C106S018260

Reexamination Certificate



An aerated refractory is provided comprising a mixture containing a phosphate compound, a metal oxide, a calcium containing compound; and an agent for increasing the volume of the mixture. Also provided is a method for protecting a substrate with aerated refractory, the method comprising dry mixing mono-potassium phosphate with a metal oxide and a calcium containing compound (i.e. hydroxyapatite) to produce a homogenous dry mixture; adding water to the mixture to produce a slurry; adding a foaming agent to the slurry; applying the slurry to the substrate; and allowing the slurry to dry.

patent: 4824811 (1989-04-01), Lang et al.
patent: 5149368 (1992-09-01), Liu et al.
patent: 5298068 (1994-03-01), Giesemann
patent: 5709742 (1998-01-01), Fulmer et al.
patent: 5858333 (1999-01-01), Winston et al.
patent: 6518212 (2003-02-01), Wagh et al.
patent: 6533821 (2003-03-01), Lally


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