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2 185 445

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IPC

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Application

2001117604/02, 2001-06-28

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Start date

2001-06-28

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Actual filing date

2001-06-28

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Published

2002-07-20

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Inventor

Lisin V.S.Skorokhodov V.N.Nastich V.P.Ushakov G.V.Sinjuts V.I.Agljamova G.A.Chernov P.P.Sokolov A.A.Anisimov I.N.Kukartsev V.M.Zakharov D.V.Filjashin M.K.Khrebin V.N.Sukhanov Ju.F.

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Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF CONVERTER STEELMAKING Russian patent published in 2002 - IPC

Abstract RU 2185445 C1

FIELD: ferrous metallurgy; converter steelmaking. SUBSTANCE: method includes blowing melt in converter by oxygen downward through multi-nozzle tuyere, supply of slag-forming materials and coolants to melt, changing position of tuyere in way of blowing the melt above level of killed bath. Oxygen blowing of melt is effected in two stages. Duration of 1st stage of blowing is set according to the following dependence: where d_out is duration of 1st stage of blowing, min; d_cr is diameter of outlet hole of tuyere nozzle, mm; α - is critical diameter of tuyere nozzle, mm; n is number of tuyere nozzles; D is present magnitude of diameter of lining of converter inner surface, m; Q is magnitude of flow rate of oxygen at 1st stage of blowing, cu.m/t. min; K is empirical coefficient characterizing the physico-chemical mechanism of slag formation and decarbonization of melt at 1st stage of blowing equal to 0.82-4.5. EFFECT: possibility of optimization of steelmaking process; reduced melting losses; reduced consumption pf charge; enhanced resistance of lining. 1 tbl

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RU 2 185 445 C1

Authors

Lisin V.S.

Skorokhodov V.N.

Nastich V.P.

Ushakov G.V.

Sinjuts V.I.

Agljamova G.A.

Chernov P.P.

Sokolov A.A.

Anisimov I.N.

Kukartsev V.M.

Zakharov D.V.

Filjashin M.K.

Khrebin V.N.

Sukhanov Ju.F.

Dates

2002-07-20—Published

2001-06-28—Filed