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1. (WO2016052467) METHOD FOR PRODUCING HONEYCOMB FILTER

Pub. No.:    WO/2016/052467    International Application No.:    PCT/JP2015/077439
Publication Date: Fri Apr 08 01:59:59 CEST 2016 International Filing Date: Wed Sep 30 01:59:59 CEST 2015
IPC: B01D 39/20
B01D 46/00
B28B 3/20
C04B 38/06
F01N 3/022
Applicants: IBIDEN CO., LTD.
イビデン株式会社
Inventors: HASEGAWA Jun
長谷川 純
KOYAMA Tatsuya
神山 達也
TAJIMA Kosei
田島 晃成
YOSHIKAWA Kyohei
吉川 恭平
Title: METHOD FOR PRODUCING HONEYCOMB FILTER
Abstract:
Provided is a method for producing a honeycomb filter, said method: making it possible, even when silicon carbide powder serving as a starting material is of low purity and a silicon compound is included, to promote the bonding of silicon carbide particles to each other by converting the silicon compound, which is an impurity, into another compound in a production step; and making it possible to produce a honeycomb filter having satisfactory properties as a filter. This method for producing a honeycomb filter is characterized by comprising: a molded article starting material preparation step in which a molded article starting material is prepared by mixing silicon carbide powder, which includes at least 3 wt% of impurities comprising a silicon compound, and an organic additive, which includes at least an organic binder; a molded article production step in which a honeycomb molded article is produced by extrusion molding the prepared molded article starting material; a degreasing step in which the produced honeycomb molded article is degreased in a perfect inert gas atmosphere; and a sintering step in which the degreased honeycomb molded article is sintered.