Refractory wear parts for sliding closure units
AssigneeDidier-Werke AG
InventorHans Rothfuss
Life of this patent
Estimating the term…
Abstract
A refractory wear part for use in a sliding closure unit for a metallurgical vessel has therethrough at least one flow-through opening. The wear part is formed of a combination of gas permeable material and gas impervious material. The wear part includes at least one gas flushing zone formed of the gas permeable material and opening on a surface of the wear part. A gas duct connects the flushing zone with an external gas inlet connection. The gas duct and the flushing zone are formed as a unitary, homogeneous gas permeable structure from the gas permeable material, and such gas permeable structure is formed within a gas impervious base structure formed of the gas impervious material.
Claims7
In a refractory wear part for use in a sliding closure unit for a metallurgical vessel, said wear part having therethrough at least one flow-through opening, said wear part being formed of a combination of gas permeable material and gas impervious material, and said wear part including at least one gas flushing zone formed of said gas permeable material and opening on a surface of said wear part, and a gas duct connecting said flushing zone with an external gas inlet connection, so that gas may be supplied through said flushing zone to said surface of said wear part, the improvement wherein:
- said gas duct and said at least one flushing zone are formed as a unitary, homogeneous gas permeable structure from said gas permeable material;
- and
- said gas permeable structure is formed within a gas impervious base structure formed of said gas impervious material.
Dependencies are inferred from the claim text.