Method for the production of a refractory filter
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United States of America Patent
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Aug 12, 2014
Grant Date -
Feb 2, 2012
app pub date -
Mar 19, 2010
filing date -
Mar 19, 2010
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Abstract
Method for the production of a closed edge refractory foam filter, by providing a reticulated foam substrate having at least one first surface for forming a side face of the filter and two opposed second surfaces for forming the through-flow faces of the filter, applying a liquid including an organic coating component to the first surface, solidifying the organic coating component to form a filter precursor having a continuous volatilizable coating on the first surface, and impregnating the filter precursor with a slurry containing particles of a refractory material, a binder and a liquid carrier. The impregnated filter precursor is dried and fired to form the filter having a closed edge.
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