Method for producing light-weight molded articles containing ceramic fibers
US4735756A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1985 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Sep 19, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.