Method for producing light-weight molded articles containing cer

Details Method for producing light-weight molded articles containing cer Method for producing light-weight molded articles containing cer

1985-09-19

1988-04-05

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Removal of liquid component or carrier through porous mold...

264 87, B29B 126

Patent

active

047357568

ABSTRACT:
Method for the production of light-weight molded articles wherein, in a first embodiment, a dispersion of ceramic fibers is flocculated with a cationic flocculating agent, a dispersion of finely divided refractory material and inorganic bonding agent is flocculated with an anionic flocculating agent, the flocculated dispersions are mixed together, and following settling of the mixture and optional removal of excess liquid, the mixture is filled into molds, converted by dewatering into molded articles, and dried. According to a second embodiment, a dispersion of ceramic fibers is flocculated with a cationic flocculating agent, finely divided refractory material and inorganic bonding agent which may be stirred in with water are added to this flocculated dispersion, an aqueous solution of an anionic flocculating agent is mixed into this mixture, and following settling of the mixture and optional removal of excess liquid, the mixture is filled into molds, converted by dewatering into molded articles, and dried.

REFERENCES:
patent: 3976728 (1976-08-01), Hawthorne
patent: 4401613 (1983-08-01), Abell et al.
patent: 4421599 (1983-12-01), Kuzuoka
patent: 4569920 (1986-02-01), Smith-Johannsen

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