FIELD: metallurgy.
SUBSTANCE: alumina-containing raw material is leached. Red mud is separated from the obtained aluminate solution. The aluminate solution is taken for decomposition in the presence of alumina primer, obtained after calcination and taken in amount of 35-425 g/dm3. During decomposition, a mother solution and a precipitate are obtained, containing aluminium hydroxide which is taken for calcinations, obtaining alumina.
EFFECT: increased percentage of decomposition of aluminate solution in Bayer method.
1 tbl, 2 ex
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