Abstract
The results of new integrated technological approaches to the synthesis of ultrafine α-alumina using commercially available metallurgical alumina as a raw material are presented. The influence of seven different modes of calcination of the initial γ-Al2O3 in the temperature range of 1200‒1600 °C was studied. It was revealed that the experimental modes determine the size of the primary crystals and the grindability of the firing products. It has been established that by varying the temperature regimes, it is possible to purposefully obtain both monomodal and multimodal powders. Ill. 5. Ref. 12. Tab. 1.
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