Chromic oxide refractories from granular compositions

Degtyareva, É. V.; Kabakova, I. I.; Shapiro, Yury E.; Portnova, A. I.; Krasman, N. M.

doi:10.1007/bf01280575

Refractories

1977

DOI: 10.1007/bf01280575

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Chromic oxide refractories from granular compositions

É. V. Degtyareva

I. I. Kabakova

Yury E. Shapiro

et al.

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1989

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“…Obtaining densely sintered refractories having a high chromium oxide content is difficult because of the low sinterability (inertness to densification) of Cr203 during high temperature firing and the necessity of carrying out firing in a controlled atmosphere [2].…”

mentioning

confidence: 99%

Sintered chromium-bearing oxide systems

Turkin

Maslova

1989

Refractories

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the granulator bowl right from the instance of initiation of granulation at regular intervals of 30 min and determined the increase in their diameter and the indices of their main physical and mechanical properties. Figure 4 shows the appearance of the corundum granules. It was established that the growth rate of the granules before attaining a size of (20 • 3) mm during granulation on the inoculator grains amounts to 0.14 mm/min, i.e., 1.4 times higher than that obtained during seedless granulation; furthermore, the period of granulation decreases from 240 up to 180 min and the yield of the final granules increases by 25-30%. CONCLUSIONSThe improved technology for granulating particulate oxide materials using the grains of inoculator seeds makes it possible to reduce the period of granulation and to increase the yield of the final granules. The waste products obtained during production of flaky (platelike) corundum can be used as the inoculator grains. In order to obtain granules having an ellipticity not exceeding 0.5-0.7 mm, the optimum size of the inoculator grains is 1-2 mm.

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mentioning

confidence: 99%

Sintered chromium-bearing oxide systems

Turkin

Maslova

1989

Refractories

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Chromic oxide refractories from granular compositions

Cited by 1 publication

References 1 publication

Sintered chromium-bearing oxide systems

Sintered chromium-bearing oxide systems

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