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KEY CHARACTERISTICS OF THE ALUMINIUM PRODUCTION PROCESS Some of the key characteristics of aluminium production technology are バハEconomies of scale: Alumina refining and aluminium smelting operations are influenced by economies of scale. The minimum economic size of an alumina refinery is around 1 mtpa, and that of a smelter unit is 250,000 tpa. Refining operations are influenced more by economies of scale, as refining is a continuous process. バハHigh capital intensity: Alumina refining and aluminium smelting are highly capital intensive.
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