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2 308 491

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(51)

IPC

C21B7/16(2006-01-01)

(21) (22)

Application

2005129312/02, 2005-09-22

(24)

Start date

2005-09-22

(22)

Actual filing date

2005-09-22

(45)

Published

2007-10-20

(72)

Inventor

Titljanov Aleksandr EvgrafovichGlukhov Leonid MikhajlovichRadjuk Aleksandr Germanovich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD FOR PREPARING OF BLAST FURNACE TUYERE FOR OPERATION Russian patent published in 2007 - IPC C21B7/16

Abstract RU 2308491 C2

FIELD: metallurgy, in particular, preparing of air tuyeres of blast furnaces for operation.

SUBSTANCE: method involves applying aluminum-containing coat onto side surface of flange-free tuyere using metal pistol movable in parallel with tuyere surface to be coated, from one edge thereof to the other edge at linearly altering velocity of from V_b to V_f; rotating tuyeres at angular velocity linearly altering from ω_b to ω_f, with ratio of tuyere rotational velocity and metal pistol velocity making: d_b/d_f=ω_f/ω_b=V_f/V_b, where d_b, d_f are diameters of tuyere at the beginning site of surface to be coated from some edge and at the final site, respectively; ω_b, ω_f are angular rotational velocities of tuyere at the beginning and at final stage of coating process, respectively; V_b, V_fare velocities of metal pistol at the beginning and at final stage of coating process, respectively. Distance between metal pistol and surface to be coated is 70-90 mm.

EFFECT: increased efficiency in preparing of blast furnace tuyere for functioning.

2 cl, 2 ex

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RU 2 308 491 C2

Authors

Titljanov Aleksandr Evgrafovich

Glukhov Leonid Mikhajlovich

Radjuk Aleksandr Germanovich

Dates

2007-10-20—Published

2005-09-22—Filed