CONSTRUCTION OF REFRACTORY PRODUCT FOR REPAIR OF OXYGEN CONVERTER STEEL OUTLET Russian patent published in 2021 - IPC C21C5/44 F27D1/16 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy and can be used to repair the steel outlet of the oxygen converter. The refractory product consists of a refractory block 1, made in the form of a single product from a flat refractory washer 2 and a truncated cone 3, strung on a metal pipe 4. The refractory block 1 has a height H, which is (0.2-1.4) D_inner - the inner diameter of the channel of the replaceable taphole on the inner side of the converter, and the flat refractory washer 2 is made with a diameter D_w equal to (1.1-2.0) D_inner and a height h equal to (0.1-0.4) D_inner, while the outer diameter D_p metal pipe 4 is less than D_inner, and the angle of inclination of the lateral surface of the truncated cone b is up to 85°.

EFFECT: invention allows increasing the service life of the removable taphole and reducing labor costs during hot repair of the steel outlet of the oxygen converter.

7 cl, 4 dwg