GAS INJECTION NOZZLE REFRACTORY AND GAS INJECTION NOZZLE
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United States of America
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Jan 6, 2022
app pub date -
Sep 19, 2019
filing date -
Sep 19, 2019
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Abstract
A gas injection nozzle refractory with one or more gas injection small metal tubes buried therein has improved durability. The gas injection nozzle refractory includes a MgO-C central refractory with a small metal tube buried therein, and a MgO-C peripheral refractory surrounding the central refractory. The central refractory on a plane of the gas injection nozzle refractory has an external shape of a circle with a radius in the range of R+10 to R+150 mm concentric with a virtual circle with a minimum radius surrounding all buried small metal tubes, R mm being a radius of the virtual circle.
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