Methods of producing ceramic honeycomb structures

Details Methods of producing ceramic honeycomb structures Methods of producing ceramic honeycomb structures

1989-05-16

1991-02-26

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264 63, 26417712, B29C 4700

Patent

active

049960156

ABSTRACT:
A method of producing ceramic honeycomb structures which comprises: the first step of preparing a ceramic plastic composition which comprises admixing and kneading a ceramic material with water, a polyalkylene glycol monoether and an organic binder; the second step of extruding the ceramic plastic composition into a wet green mold of a honeycomb structure having openings extending therethrough; the third step of passing a high humidity air through the openings to evaporate the substantial amount of the water in the green mold; the fourth step of passing heated air to evaporate the substantial amount of the polyalkylene glycol monoether from the green mold; and the fifth step of calcining the mold.
The method is suitably applicable to the production of ceramic honeycomb structures as a catalyst structure or a catalyst carrier structure therefor which contains a material acting as an oxidation catalyst.

REFERENCES:
patent: 3963504 (1976-06-01), Lundsager
patent: 4579707 (1986-04-01), Kobayashi et al.

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