Non-slumping, pumpable castable high purity silica composition

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United States of America Patent

PATENT NO 6190448
SERIAL NO

09246473

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Abstract

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A refractory composition is disclosed comprising a high purity silicon dioxide and a binder. This refractory composition may be applied by trowelling, brushing, casting, pumping and/or spraying it on a worn and/or damaged high purity silica refractory surface. A refractory castable composition is also disclosed that may be employed with forms. Further, an essentially non-slumping, sprayable refractory castable composition that is applied without the use of forms is provided. The sprayable refractory castable composition comprises (a) a tempered, pumpable first component comprising (i) a high purity silicon dioxide and a binder, and (ii) water, if needed, to achieve a pumpable consistency, and (b) a second component comprising a flocculating agent. The flocculating agent is added to the first component for achieving installation of the sprayable refractory composition in an amount to prevent slumping of the sprayable refractory castable composition.

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Patent Owner(s)

Patent OwnerAddress
HARBISON - WALKER REFRACTORIES COMPANY600 GRANT STREET 51ST FLOOR PITTSBURGH PA 15219

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Langenohl, Mark C Pittsburgh, PA 11 46

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