Conclusions
It was shown in an Investigation of mixtures of fine-ground electrofused corundum with orthophosphoric acid that at 20–25°C the degree of the reaction of the components is highest during the first four days. During this period only water-soluble acid aluminum phosphates are formed and a significant proportion of the orthophosphoric acid remains uncombined. The reaction rate is low and falls still further with an increase in the size of the corundum grains.
Corundum-containing compositions with added orthophosphoric acid are produced in ready-for-use form by the Semiluk Refractories Plant.
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Translated from Ogneupory, No. 2, pp. 46–51, February, 1975.
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Tseitlin, L.A., Mendelenko, A.K., Balyuk, S.T. et al. Reaction of synthetic corundum with orthophosphoric acid. Refractories 16, 114–119 (1975). https://doi.org/10.1007/BF01287901
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DOI: https://doi.org/10.1007/BF01287901