Refractory for gas blowing for molten metal refining vessel

Details Refractory for gas blowing for molten metal refining vessel Refractory for gas blowing for molten metal refining vessel

F - Mech Eng,Light,Heat,Weapons

27

D

F27D 3/16 (2006.01) B22D 1/00 (2006.01) C21C 7/072 (2006.01) C23C 30/00 (2006.01) G01N 33/32 (2006.01)

Patent

CA 2073219

A refractory for gas blowing to be attached to an opening of a molten metal refining vessel, which comprises: a gas permeable portion comprising an alumina refractory, the gas permeable portion having a plurality of gas blowing apertures running therethrough in the axial direction thereof; and a collar portion comprising an alumina refractory, formed integrally with the gas permeable portion so as to surround the gas permeable portion. The above-mentioned alumina refractory contains at least 88 wt.% alumina and is non-porous with a porosity of up to 20%.

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