Hot gas filter

Details Hot gas filter Hot gas filter

1989-07-10

1990-11-06

Spitzer, Robert

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

55523, 55524, 55DIG5, 264 63, C04B 4150, B01D 3920

Patent

active

049684671

ABSTRACT:
A ceramic filter element for filtering hot gasses is manufactured by first forming a skeletal member made up of randomly disposed ceramic fibers by pulling an aqueous solution of the fibers and a liquid binder onto a mandrel and then heat treating the member to dry the binder. The dried member is then coated with alumina gel, colloidal aluminum or colloidal silica and heat treated at a temperature within the range of 1700 degrees F. to 2300 degrees F. to dry the coating and increase the resistance of the coating to corrosion by hot gasses.

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