FIELD: process engineering.
SUBSTANCE: invention relates to hydrometallurgy of metals and may be used for production of metal oxides. Proposed method comprises heating of hydroxides at the temperature of their decomposition. Note here that hydroxide heating is carried out in autoclave without evaporation of water bulk provided that pressure of hydroxide dissociation exceeds that of saturated water vapors at said temperature.
EFFECT: lower costs of dehydration.
4 dwg, 1 ex
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