OAO Magnitogorsk Metallurgical Combine

Russia

OAO Magnitogorsk Metallurgical Combine

Russia
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Burmistrova E.V.,OAO Magnitogorsk Metallurgical Combine | Abdrakhmanov R.I.,OAO Magnitogorsk Metallurgical Combine | Igonin A.Yu.,OAO Magnitogorsk Metallurgical Combine
Refractories and Industrial Ceramics | Year: 2013

Results are analyzed for operation of bottom linings of circulation degassers of the OAO MMK oxygen-converter workshop. The main reasons are revealed for lining breakdown, such as impregnation of objects with slag and metal, chemical attack during reaction with slag, and thermal spalling of a refractory working surface due to a change in lining temperature during operation. In order to improve refractory operating properties it is necessary to resolve the problem of heat and corrosion resistance of the materials used. The main measures are aimed at improving the cyclic operation of degassers, and also choice of optimum slag composition, promoting formation of a surface skull during lining operation. © 2013 Springer Science+Business Media New York.


Kashcheev I.D.,Ural Federal University | Zemlyanoi K.G.,Ural Federal University | Pomortsev S.A.,OOO Ogneupor | Valuev A.G.,OOO Ogneupor | Borisova Y.A.,OAO Magnitogorsk metallurgical Combine
Refractories and Industrial Ceramics | Year: 2016

The possibility is considered of using carbon fibers as a reinforcing element within the structure of periclase-carbon refractories. Laboratory and industrial test results are provided. © 2016 Springer Science+Business Media New York


Bosyakova N.A.,OAO Magnitogorsk Metallurgical Combine | Stepanova E.V.,OAO Magnitogorsk Metallurgical Combine | Murashko E.V.,OAO Magnitogorsk Metallurgical Combine | Pomortsev S.A.,OAO Magnitogorsk Metallurgical Combine | And 2 more authors.
Refractories and Industrial Ceramics | Year: 2013

Results of laboratory and pilot-plant studies relating to the use of high-alumina slag obtained in the production of chromium metal in the technology of aluminosilicate refractories are presented. The following are recommended for management of the production of aluminosilicate articles based on clay stock enriched with chromium metal slag: use of slag with Al2O3 content at least 77% and CaO content at most 8%; complete incoming control of the slag; and operational correction as a function of the chemical composition of the slag, the physical composition of the charge, and the roasting conditions. © 2013 Springer Science+Business Media New York.


Valuev A.G.,OAO Magnitogorsk Metallurgical Combine | Klesov Y.L.,OAO Magnitogorsk Metallurgical Combine | Borisova Yu.A.,OAO Magnitogorsk Metallurgical Combine | Murashko E.V.,OAO Magnitogorsk Metallurgical Combine | Bosyakova N.A.,OAO Magnitogorsk Metallurgical Combine
Refractories and Industrial Ceramics | Year: 2011

Results are provided for a study of product nonconformity during manufacture of periclase-carbon ladle refractories and refractory scrap as a potential raw material source. Optimum charge compositions are given with addition of secondary refractories and a production scheme for the manufacture of periclase-carbon refractory objects taking account of existing technology in the OOO Ogneupor magnesium-dolomite refractory workshop. Pilot batches of objects are produced for industrial tests, confirming a lack of deterioration in operating properties. © 2011 Springer Science+Business Media, Inc.


Sidorov E.V.,OAO Magnitogorsk Metallurgical Combine | Kochubeev Yu.N.,OAO Magnitogorsk Metallurgical Combine | Borisova Yu.A.,OAO Magnitogorsk Metallurgical Combine | Murashko E.V.,OAO Magnitogorsk Metallurgical Combine | Bosyakova N.A.,OAO Magnitogorsk Metallurgical Combine
Refractories and Industrial Ceramics | Year: 2011

Results are presented for a laboratory study of the substance composition of a periclase-carbon torcrete mix for restoring a converter lining, comparative methods for testing a torcrete mix under laboratory conditions, and the main production parameters for a torcrete mix under existing production conditions. Industrial tests are performed in the converter section of the OAO MMK oxygen-converter workshop. The life of a torcrete layer is two melts. © 2011 Springer Science+Business Media, Inc.


Valuev A.G.,OAO Magnitogorsk Metallurgical Combine | Govgalenko I.V.,OAO Magnitogorsk Metallurgical Combine | Afanas'Ev I.G.,OAO Magnitogorsk Metallurgical Combine
Refractories and Industrial Ceramics | Year: 2011

A completed campaign of converter No. 2 from the firm RHI compared with a converter campaign with a traditional lining, within which the maximum life was obtained in OAO MMK, is analyzed. It is established that under conditions of charging less than 100 tons of scrap in a melt on average per campaign and observation of the procedure in the course of lining operation (delivery of MgO containing additions, observation of soaking regime after sealing, pouring and charging, skull application for more than 3 min, etc.) the life of an RHI lining is more than 6000 melts. © 2011 Springer Science+Business Media, Inc.


Kashcheev I.D.,Ural Federal University | Zemlyanoi K.G.,Ural Federal University | Pomortsev S.A.,OOO Ogneupor | Ryaplova A.A.,OOO Ogneupor | Borisova Y.A.,OAO Magnitogorsk Metallurgical Combine
Refractories and Industrial Ceramics | Year: 2016

Possibilities are considered for using carbon fibers as a reinforcing elements within the structure of periclasecarbon refractories. Laboratory research results are provided. © 2016 Springer Science+Business Media New York


Kashcheev I.D.,Ural Federal University | Pomortsev S.A.,OAO Magnitogorsk Metallurgical Combine
Refractories and Industrial Ceramics | Year: 2012

The effect of fraction composition of aluminum-magnesium antioxidant with a Al:Mg ratio of 1:1 on some periclase-carbon object properties and their relationship towards highly basic slag are studied. It is established that introduction into the composition of periclase-carbon charges of aluminum-magnesium alloy in an amount of 5% most effectively protects carbon in the refractory, reducing the amount of the decarburized area, and increasing ultimate strength in compression for objects to 36.7 MPa after coking firing. © 2012 Springer Science+Business Media New York.

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