OOO Gruppa Magnezit

Moscow, Russia

OOO Gruppa Magnezit

Moscow, Russia
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Chaika E.F.,OOO Gruppa Magnezit | Maryasev I.G.,OOO Gruppa Magnezit | Platonov A.A.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2017

Aprocedure is presented for studying flake graphite used in OOO Gruppa Magnezit for quality evaluation and possible application in carbon-containing material manufacture. Results are provided for studying graphite from various deposits within Russia, China, Brazil, India, Norway, and Africa. The significance of entirely new graphite quality indices and their interpretation is demonstrated in accordance with the procedure proposed. © 2017 Springer Science+Business Media New York


Aksel'rod L.M.,OOO Gruppa Magnezit | Yarushina T.V.,OOO Gruppa Magnezit | Maryasev I.G.,OOO Gruppa Magnezit | Privalov I.V.,OOO Gruppa Magnezit | Andrievskikh A.L.,TOO Dalmond
Refractories and Industrial Ceramics | Year: 2017

A contemporary procedure is discussed for improving the structure of chromite-periclase refractory based on analyzing corrosive action of a reaction charge fired in aWaelz kiln. It is established that refractory wear during service proceeds by a frontal scheme through a series of successive transformations of the microstructure. On the basis of studying corrosion results for refractory objects of fayalite composition by slag manufacturing technology is developed for chromite-periclase refractories more resistant to Waelz material components. © 2017 Springer Science+Business Media New York


Zabolotskii A.V.,OOO Gruppa Magnezit | Aksel'rod L.M.,OOO Gruppa Magnezit | Donich R.A.,OOO Gruppa Magnezit | Pospelova E.I.,OOO Gruppa Magnezit | Marchenko D.A.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2017

Amathematical model of the movement of moisture in refractory water-sealed materials of different densities where there is an external temperature field present is constructed. The Fourier thermal conductivity equations, Fick’s diffusion equation, and the method of finite elements are used to solve the problem. The diffusion coefficients of water in the test materials are determined by means of laboratory tests from the loss of mass in the course of drying of the samples. Features typical of the movement of moisture in refractory concrete for the case of deposition on cold and hot surfaces are determined as a result of a subsequent computational experiment, using as examples the casting bottom of a casting ladle and guniting of an intermediate ladle. © 2017 Springer Science+Business Media New York


Aksel'rod L.M.,OOO Gruppa Magnezit | Pitsik O.N.,OOO Gruppa Magnezit | Maryasev I.G.,OOO Gruppa Magnezit | Maryaseva O.A.,OOO Gruppa Magnezit | Ustinov V.A.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2017

A method is described for modeling sinter stability of periclase-spinel refractory composition produced by Gruppa Magnezit. Refractory microstructure is studied after testing, and the degree of resistance of new forms of refractory to action of a corrosion agent is determined. © 2017 Springer Science+Business Media, LLC


Aksel'rod L.M.,OOO Gruppa Magnezit | Maryasev I.G.,OOO Gruppa Magnezit | Platonov A.A.,OOO Gruppa Magnezit | Mel'nikova D.R.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2015

A new digital analysis procedure is developed for microstructural study of fuzed periclase structural elements aimed at objectivity. The main parameters are presented distinguishing the proposed method from a normal linear method by means of chords. An example is provided of crystal sizes for fuzed periclase produced by the Magnezit Group and other producers, measured by old and new methods. Checking fuzed periclase with an MgO content of more than 97.5% with a different CaO/SiO2 ratio in periclase-carbon refractories did not reveal the effect of this parameter on life in a steel-pouring ladle lining. © 2015 Springer Science+Business Media New York


Aksel'rod L.M.,OOO Gruppa Magnezit | Laptev A.P.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2011

The activity of OOO Gruppa Magnezit is described, concerning production of oxide-carbon refractories, and methods of preparing refractory linings from them for steel-pouring ladles with the aim of obtaining the minimum specific consumption of refractory materials and achieving a prescribed life. © 2011 Springer Science+Business Media, Inc.


Zabolotskii A.V.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2011

A simulation of the behavior of nonporous single-crystal magnesium oxide under conditions of heat loading that approach the operating conditions of casting ladles in ferrous metallurgy is performed by means of mathematical methods. Both numerical and analytic methods are used for the calculations. The temperature and mechanical stress fields and such breakdown parameters of materials as the moment of appearance of cracks, the thermal stability criterion (breakdown temperature drop of surface of material), etc. were determined as a result of the calculations. Results of calculations are presented and an analysis of the application of mathematical methods to the simulation of different heat treatment regimes of a material is performed. © 2011 Springer Science+Business Media, Inc.


Aksel'rod L.M.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2011

It is noted that under conditions of increasing competition among refractory producers there is a greater tendency of Russian refractory manufacturers to expand the production of oxide-carbon refractory objects, unmolded refractories, the production of high quality raw materials, and creation of the latest production processes, in particular the use of nanomaterials. © 2011 Springer Science+Business Media, Inc.


Platonov A.A.,OOO Gruppa Magnezit | Maryasev I.G.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2011

OOO Gruppa Magnezit has developed a new generation of periclase cement-free concretes based on a MgO-SiO 2binder with a service temperature from 1500 to 1700°C depending on filler composition. The technology assimilated makes it possible to prepare refractories of complex shape for lining elements of CBCM intermediate ladles and other units. © 2011 Springer Science+Business Media, Inc.


Zabolotskii A.V.,OOO Gruppa Magnezit
Refractories and Industrial Ceramics | Year: 2010

The thermal fields of the refractory linings of metallurgical equipment are investigated. Using as an example the lining of a steel-teeming ladle, mathematical modeling of the thermal fields in preliminary heating of the ladle and during smelting is performed. An approach to the construction of thermal fields, assuming the presence of defects in the lining and in the case of intersecting thermal fields, is proposed. © 2010 Springer Science+Business Media, Inc.

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