Refractory wear parts for sliding closure units

Details Refractory wear parts for sliding closure units Refractory wear parts for sliding closure units

1988-03-16

1988-12-06

Rutledge, L. Dewayne

Dispensing

Molten metal dispensing

Gaseous fluid engages molten metal

266220, 266236, B22D 3700

Patent

active

047890860

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.

REFERENCES:
patent: 3838798 (1974-10-01), Voss
patent: 4179046 (1979-12-01), Jeschke et al.
patent: 4365731 (1982-12-01), Fehling et al.
patent: 4583721 (1986-04-01), Arakawa et al.
patent: 4746038 (1988-05-01), Ohwada et al.

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