FIELD: production of aluminium oxide. SUBSTANCE: plant has a group of autoclaves provided with steam lifts of jet heater positioned above first autoclave, autoclave with surface steam lift whose upper branch pipe is connected to steam duct. Between autoclaves with contact steam lifts and autoclave with surface steam lift there installed siphon overflow device. Surface steam lift and siphon overflow device are connected to steam ducts to external steam source. EFFECT: enhanced operating capabilities. 1 dwg
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