Refining vessel for high-temperature melt

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United States of America

PATENT NO 11976340
SERIAL NO

17601681

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Abstract

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A refining vessel for high-temperature melt includes a refractory for gas blowing nozzle that includes a central refractory embedded with metal tubules, and an outer refractory circumferentially surrounding the central refractory. The refractory for gas blowing nozzle has a horizontal projection on which a minimum radius of an imaginary circle encompassing all the metal tubules embedded in the central refractory is R (mm), wherein the central refractory has an outline that falls between one circle that is concentric with the imaginary circle and has a radius of R+10 mm, and another circle that is concentric with the imaginary circle and has a radius of R+150 mm. The central refractory is formed of a MgO—C refractory having a carbon content of 30 to 80 mass %, and the outer refractory is formed of a MgO—C refractory having a carbon content of 10 to 25 mass %.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATION2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 1000011 ?1000011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujiyoshi, Ryoma Tokyo, JP 2 2
Hosohara, Seiji Tokyo, JP 2 2
Torigoe, Atsushi Tokyo, JP 4 6

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