FIELD: chemistry.
SUBSTANCE: method for aluminium oxide preparation includes anode aluminium solution with rectified alternating current by bridge connection at current density in the range 0.0150-0.45 A/cm2 in the water solution of sodium chloride with concentration 30-300 g/l. Obtained aluminium hydroxide is separated and calcinated at temperature 600-1350°C. The precipitate of aluminium hydroxide is washed, filtered and fed for calcination.
EFFECT: enhancing of product yield.
2 cl, 1 tbl
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