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2 797 222

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IPC

C21C5/48(2006-01-01)

C21C7/00(2006-01-01)

(21) (22)

Application

2022128462, 2022-11-02

(24)

Start date

2022-11-02

(22)

Actual filing date

2022-11-02

(45)

Published

2023-05-31

(72)

Inventor

Zakharov Igor MikhailovichShvedov Konstantin NikolaevichEremeev Vladimir AleksandrovichSushnikov Dmitrii VladimirovichPolikarpov Nikolai IvanovichManzor Dmitrii EduardovichElin Viacheslav IurevichStasov Ivan Valerevich

(73)

Holder

Aktsionernoe Obshchestvo Nizhnetagilskii Metallurgicheskii Kombinat» Ntmk»)

BLOW-THROUGH TUYERE FOR METAL REFINING IN A LADDER Russian patent published in 2023 - IPC C21C5/48 C21C7/00

Abstract RU 2797222 C1

FIELD: metallurgy, in particular steelmaking.

SUBSTANCE: invention and can be used to improve efficiency of metal refining in the ladle with an upper heat-resistant blow-through tuyere. The tuyere consists of a layer of heat-resistant concrete, made in form of a single cylindrical product, strung on a metal pipe, with a through hole in the lower part for metal blow-through. The value of the height H of the heat-resistant concrete layer and the height h₁ between the lower end of the refractory concrete and the central axis of the through hole is made with the following dimensional ratios: Н=(20-30)D, h₁= (0.2-2.0)D, where: H is the height of the heat-resistant concrete layer, mm; D is the diameter of the heat-resistant concrete layer, mm; h₁ is the height between the lower end of the heat-resistant concrete and the central axis of the through hole (3), mm.

EFFECT: invention makes it possible to increase the service life of the upper heat-resistant blow-through tuyeres by 44% on average from 900 min to 1300 min.

2 cl, 2 dwg

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RU 2 797 222 C1

Authors

Zakharov Igor Mikhailovich

Shvedov Konstantin Nikolaevich

Eremeev Vladimir Aleksandrovich

Sushnikov Dmitrii Vladimirovich

Polikarpov Nikolai Ivanovich

Manzor Dmitrii Eduardovich

Elin Viacheslav Iurevich

Stasov Ivan Valerevich

Dates

2023-05-31—Published

2022-11-02—Filed