Process for manufacturing a ceramic foam body

Details Process for manufacturing a ceramic foam body Process for manufacturing a ceramic foam body

C - Chemistry, Metallurgy

04

B

183/110, 25/125

C04B 38/06 (2006.01) B01D 39/20 (2006.01) B23P 25/00 (2006.01) B26D 7/10 (2006.01) B28B 1/00 (2006.01) B28B 7/34 (2006.01) C04B 38/00 (2006.01) F01N 3/022 (2006.01) F01N 3/021 (2006.01)

Patent

CA 2022767

Abstract The process for manufacturing an open pore foam body (10) with three dimensional ceramic network (24), in particular as a filter for the treatment of hot gases or as a catalyst substrate, has as its starting material a block of open pore plastic foam (36). This is impregnated at least once with a ceramic suspension, freed of excess ceramic suspension and heated to a temperature below the melting point of the plastic, then finally burnt off at a temperature at which the ceramic sinters together. The plastic foam block (36,28,38,44,46) of the prescribed outer dimensions is cooled down and machined to produce a Z-flow filter with high precision longitudinal channels (14,20,32,40,42).

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