Refractory materials
US4257990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1978 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Mar 6, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2001/1605
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A cavity in a heat-resistant structure, eg. of ferrous metal, is filled by fitting it with refractory brickwork. Instead of securing the brickwork with conventional cement, a flowable aluminous slag is produced in contact with the brickwork by exothermic reaction of a composition containing metallic aluminium and an oxidizing agent, preferably ferric oxide. The reaction, which may take place wholly or partially within the jointing space or spaces, is at such a temperature that the slag in said spaces is at least at a bond-forming temperature. Additives, eg. refractory particles, a flux, potassium nitrate or ferrous metal may be incorporated in the reaction mixture for control purposes subject to considerations described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.