Refractory piece permeable to gases
USRE32192E · kind E · reissue
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1984 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Jun 11, 2004 |
Classification
- Technology area (CPC —)General
Abstract
The refractory piece permeable to gases according to the invention is designed to be incorporated in the inner refractory lining of a metallurgical container so that one of its surfaces will be in contact with the molten metal bath in said container, the opposite surface being equipped with means for introducing a gas under pressure. This piece, whose shape is generally hexahedral, consists essentially of a mass of nonporous refractory material that has a number of local discontinuities 8 extending throughout the piece along its height h between the surface in contact with the molten metal and the opposite surface. In an advantageous method of embodiment, the local discontinuities 8 are obtained by an assembly 1, in a metal casing, of nonporous refractory elements 2, in the form of plates and which are placed side by side along their large lateral surfaces, without any material gaskets or seals between them. The piece according to the invention is easy to make. In addition, it has all of the required qualities of selectivity or orientation so that its life will be about as long as the life of the surrounding refractory lining of the metallurgical container in which it is designed t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.