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Effect of the fineness of alumina and certain additives on the properties of alumina slips and products

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Refractories Aims and scope

Conclusions

Slip made from ground alumina from the Podol'sk Factory possesses a high sedimentation stability, a low casting-up rate, and a high density and strength.

Incorporating additions of GKZh-10 to accelerate the vibrogrinding of the alumina in preparing high-quality ceramics, needing to have high strength and dielectric properties, is undesirable. Introducing it during the ball-mill grinding for producing corundum ceramics which need not have specially outstanding properties is quite justified.

The optimum quantity of magnesia in the slip from the point of view of its rheological properties is 0.07–0.2%.

An addition of unfired technical alumina can be advantageously made, together with the MgO modifier, which permits a substantial reduction in the closed porosity and an increase in the apparent density of the articles.

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Authors and Affiliations

  1. Podol'sk Refractories Factory, USSR

    D. B. Min'kov, L. V. Vinogradova, T. S. Makarova, I. S. Kainarskii, G. E. Kalita & É. V. Degtyareva

  2. Ukrainian Scientific-Research Institute of Refractories, Ukraine

    D. B. Min'kov, L. V. Vinogradova, T. S. Makarova, I. S. Kainarskii, G. E. Kalita & É. V. Degtyareva

Authors
  1. D. B. Min'kov
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  2. L. V. Vinogradova
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  3. T. S. Makarova
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  4. I. S. Kainarskii
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  5. G. E. Kalita
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  6. É. V. Degtyareva
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Additional information

Translated from Ogneupory, No. 7, pp. 39–45, July, 1971.

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Min'kov, D.B., Vinogradova, L.V., Makarova, T.S. et al. Effect of the fineness of alumina and certain additives on the properties of alumina slips and products. Refractories 12, 451–456 (1971). https://doi.org/10.1007/BF01283065

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  • DOI: https://doi.org/10.1007/BF01283065

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