Process for applying low-cement castable refractory material
US6022593A · kind A · utility
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8Claims
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Key dates
| Filing date | Apr 29, 1997 |
| Grant date | Feb 8, 2000 |
| Priority date | — |
| Expiry date | Apr 29, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00172
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for placing a thixotropic low-cement castable refractory material without the necessity for forms. A low-cement castable material is mixed with a measured amount of water, then is pumped hydraulically through a hose to a nozzle assembly. Compressed air and a cement setting agent are added to the mixture at the nozzle. The addition of the setting agent at the nozzle overcomes the thixotropic nature of the low-cement castable, so that it will immediately "set" in position when sprayed onto a surface, including vertical and overhead surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.