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  • 1965-1969  (12)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Magnesia products from powders containing more than 94% MgO (1969)
    Springer
    Refractories and industrial ceramics 10 (1969), S. 58-61 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions Using magnesite powders with large contents of magnesium oxide we obtained high-quality magnesite and periclase-spinel products. Periclase-spinel products obtained from the above powders satisfy the requirements of GOST for the PShSP type of product for the roofs of open-hearth furnaces and electric steel furnaces. Their thermal shock resistance is 7–15 water-heat cycles, compared with 5–7 heat cycles for ordinary periclase-spinel products, which is due to their structural features.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291733
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  • 2
    Electronic Resource
    Electronic Resource
    Destructive mechanism for periclase-spinel and magnesite-chromite refractories in oxygen converter linings (1967)
    Springer
    Refractories and industrial ceramics 8 (1967), S. 33-40 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions The greatest wear of magnesite-chrome and periclase-spinel linings was observed in the cylindrical part of the converter in the places showing intense movement of metal and slag and maximum heat load. In these sections of the structure we get a predominant erosion by fusion, but the share of the erosion due to scaling is substantial. In the throat, wear of the lining occurs mainly due to scaling as a result of frequent changes in temperature and air. The wear of the lining of the bottom is slight compared with sections located above and takes place mainly as a result of erosion developed during intensive movement of the metal in the blow period. PS refractories are more resistant in the linings of the converter than MC refractories, which is explained by the difference in the mechanism of their wear. To increase the resistance of refractories PS against the action of converter slags it is necessary to make them from enriched chromitic ores and magnesite with the use of high-temperature firing, which will ensure better development of the direct bond of the grains of periclase with the chrome-spinel and more complete mineral formation (with maximum yield of secondary spinel).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290208
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  • 3
    Electronic Resource
    Electronic Resource
    Firing caustic magnesite dust (1967)
    Springer
    Refractories and industrial ceramics 8 (1967), S. 76-83 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions Six experimental batches of magnesite powder were obtained for preparing magnesia products by firing caustic dust in a rotary furnace. To improve the sintering, chromite or titanomagnetite was added to the dust. The final conclusions on the optimum cycle for the production of dense magnesite powders from caustic dust will be made after we have obtained data on the stability in service of products made from these powders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290216
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  • 4
    Electronic Resource
    Electronic Resource
    Service of rammed crucibles for melting noble metals in induction furnaces (1969)
    Springer
    Refractories and industrial ceramics 10 (1969), S. 284-287 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions We prepared and tested in service crucibles of fused magnesium oxide with special additions, having a considerably higher resistance in induction-furnace conditions at temperatures of about 2000°C. The additives guaranteed the necessary sintering of the working zone in the crucible, and helped to form a direct bond between the crystals of periclase. The structure of the used crucibles is described. The formation of the zone structure is connected with the temperature gradient, and in the hot zones is accompanied by intensive recrystallization and growth of periclase crystals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291453
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of the properties of magnesite powders on the quality of spinel-bonded magnesite products (1969)
    Springer
    Refractories and industrial ceramics 10 (1969), S. 404-409 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions Magnesite powders have different chemical compositions, density, and structures. The properties of magnesite powders substantially affect the factors, particularly thermal shock resistance, (spalling resistance) of magnesite powders with a spinel bond. The production of highly thermal shock resistant products is governed by the formation of a heterogeneous and irregular crystalline microstructure in the products which is guaranteed by the use in them of granular constituent, chemically pure, dense, strong, and inert (with respect to secondary recrystallization) magnesite powders. The chief structural features of magnesite products based on spinel bonds can be evaluated as a first approximation by the coefficient of irregular granularity and the secondary recrystallization of periclase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291339
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  • 6
    Electronic Resource
    Electronic Resource
    Testing dinas with additions of titanoaluminous slag in the lower structure of an open-hearth furnace (1967)
    Springer
    Refractories and industrial ceramics 8 (1967), S. 233-235 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions The resistance of dinas (silica) containing additions of titanoaluminous slag in the slagger roof of an open-hearth furnace is the same as for ordinary open-hearth silica, and consequently such refractories may be used in the lower structures of open-hearth furnaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01285023
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  • 7
    Electronic Resource
    Electronic Resource
    Testing unfired volume-constant magnesite-chromite products in open hearth roofs (1969)
    Springer
    Refractories and industrial ceramics 10 (1969), S. 228-232 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions Tests in the main roof of a 160-ton open-hearth furnace showed that the wear of unfired volume-constant magnesite-chromite products on average is the same as that of fired products MKhS worked in the same section of the roof. The minimum wear is shown by unfired products based on fused magnesite. The mechanism of the wear in unfired and fired magnesite-chromite products is basically the same.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291271
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  • 8
    Electronic Resource
    Electronic Resource
    Chemical and mineralogical changes in magnesite-chromite bricks during service in roofs of open-hearth furnaces (1969)
    Springer
    Refractories and industrial ceramics 10 (1969), S. 236-240 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions A chemical and petrographical investigation of magnesite-chromite refractory after prolonged service in the roof of an open-hearth furnace established the presence in the working zone of direct periclase-periclase and periclase-chromespinellide bonds of the crystals. The main factors facilitating the development of a direct bond in the working zone are migration of silicate melts from this zone into the deeper sections of the refractory under the temperature gradient conditions and saturation of the working zone by iron oxides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291273
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  • 9
    Electronic Resource
    Electronic Resource
    Experiments with flame guncreting of basic refractories (1967)
    Springer
    Refractories and industrial ceramics 8 (1967), S. 125-128 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions A laboratory installation for flame guncreting was designed, built, and tested. A method was developed for flame guncreting of basic refractories. The guncreted layer obtained as a result of flame guncreting is formally bonded with the refractory, and in its density and structure, is significantly better than it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290227
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  • 10
    Electronic Resource
    Electronic Resource
    The sintering of magnesite over the length of rotary kilns (1968)
    Springer
    Refractories and industrial ceramics 9 (1968), S. 581-586 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions We investigated the processes of degeneration and sintering of raw magnesite over the length of a 90 m rotary kiln heated with natural gas. According to the physicochemical processes taking place in magnesite during calcination, the rotary kiln, starting from the loading head, can be tentatively divided into the following zones: preheat up to 15 m of the length, decarbonization 15–65 m, sintering 65–81 m, and cooling 81–90 m. We demonstrate the dynamics of formation of the structures of fine fractions of powder, being in the main aggregates of pseudomorphs of periclase around the broken carbonate. As a result of the investigation of the physicochemical processes we determined the tentative heating temperatures of the material over the length of the kiln which must be tightened up experimentally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01283504
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