Co-molding process for producing refractory materials without firing or coking the refractory
US5730921A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1995 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Mar 31, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/422
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is directed to a co-molding process for producing co-molded, chemical bonded, canned refractory articles which eliminates the costly and problematic firing or sintering steps and which eliminates the time consuming separate canning and sizing of the refractory articles as required by conventional methods. The co-molding process of the present invention comprises the steps of: PA1 (a) mixing a refractory aggregate with a chemical binder to form a pressable refractory composition; PA1 (b) placing a metal can into a press cavity die; PA1 (c) charging said refractory composition into said metal can and press cavity die; PA1 (d) subjecting said refractory composition to high pressures while in said press cavity die to shape and size said refractory article; and PA1 (e) drying said refractory article at temperatures sufficient to cure said chemical binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.