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Tests of dunites from the Iovsk Deposits in production and in use in thermal insulation inserts

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Conclusions

Thermal-insulation inserts manufactured on the basis of unfired Iovsk dunite had the same properties as those made from fired Solov'evogorsk dunite and met the requirements of TU 14-8-357-80 with amendments 1 and 2. No burning of the insert was observed and the surface of the head part of the casts was clean and even. The range of the shrinkage defects in the slabs of the experimental and standard casts was virtually identical and was ≤7%. The average value of the leading-edge trim in the case of the experimental and standard casts was virtually identical (9.99 and 10.09%, respectively). The same was also noted for the additional shrinkage segregation and the degree of chemcial nonuniformity at the level of the leading-edge trim.

On the basis of these studies it has been established that the unfired Iovsk dunite can be used as a refractory silicate safety filler for the production of thermal-insulation inserts.

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Literature cited

  1. M. G. Anan'evskii, N. G. Bochkov, A. A. Alymov, et al., Chernaya Metallurgiya, Bulletin of Scientific and Technical Information [in Russian], No. 8, 40–42 (1981).

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  2. “An increase in the effectiveness of using inserts and improvements in the quality of the surface of the metal and in health conditions of work as a result of improving the compositions of inserts and improving their antiburn properties:” Answer No. 13-III-I-462-75, No. 76077232, No. B 632542, Eastern Institute of Refractories [in Russian], Sverdlovsk (1977).

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Authors and Affiliations

  1. Eastern Institute of Refractories, USSR

    N. I. Abramova, V. Ya. Grinberg, S. V. Zhebrunov, V. A. Perepelitsyn, V. Ya. Minevich, L. N. Petrova & G. D. Bykov

  2. “Fiftieth Anniversary of the USSR” Cherepovskii Metallurgial Combine, Institute of Ferrous Metallurgy, USSR

    N. I. Abramova, V. Ya. Grinberg, S. V. Zhebrunov, V. A. Perepelitsyn, V. Ya. Minevich, L. N. Petrova & G. D. Bykov

Authors
  1. N. I. Abramova
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  2. V. Ya. Grinberg
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  3. S. V. Zhebrunov
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  4. V. A. Perepelitsyn
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  5. V. Ya. Minevich
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  6. L. N. Petrova
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  7. G. D. Bykov
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Translated from Ogneupory, No. 1, pp. 40–43, January, 1986.

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Abramova, N.I., Grinberg, V.Y., Zhebrunov, S.V. et al. Tests of dunites from the Iovsk Deposits in production and in use in thermal insulation inserts. Refractories 27, 49–53 (1986). https://doi.org/10.1007/BF01398288

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  • DOI: https://doi.org/10.1007/BF01398288

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