Conclusions
Induction melting of reactive MgO in a cold crucible in the Kristall-402 equipment makes it possible to produce a periclase with a mass fraction of MgO>99%. Noncontaminating crushing, sieving, and mixing together powders of a specified grain composition plus heat treatment at 1600°C in air ensures that the highest quality periclase in accordance with GOST 13236-73 is obtained. The combined heat treatment of the periclase and an addition of talc increases the electrical resistivity and the general resistivity to hydration.
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Translated from Ogneupory, No. 12, pp. 33–38, December, 1981.
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Shurygina, I.V., Polonskii, Y.A., Masover, I.F. et al. Technology of producing high-grade electroengineering periclase by melting in an induction furnace with a cold crucible. Refractories 22, 622–627 (1981). https://doi.org/10.1007/BF01398177
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DOI: https://doi.org/10.1007/BF01398177