Abstract
In production of high purity alumina, milling is an important processing step during which particle size has to be reduced to sub-micron size using minimum energy input and avoiding contamination from the milling system. In this investigation, to increase the efficiency of the milling process, the effect of two anionic dispersants were studied in concentrated alumina slurry. The optimized slurry was granulated using freeze drying and the properties of granules and sinters were compared with that using spray drying.
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