FIELD: nonferrous metallurgy; applicable in production of aluminum-scandium alloying composition used in modification of aluminum alloys. SUBSTANCE: method includes aluminothermic reduction of scandium halide or oxide in presence of potassium chloride and sodium fluoride at temperature above 850C and not below 1050C. Method includes aluminothermic reduction of fluoroscandiate of alkali or alkaline-earth metal in presence of potassium or sodium chloride at temperature of 800-1050C. EFFECT: higher operating characteristics of alloy due to increased uniformity of its structure with reduced power consumption and simplified process of introduction of additives into metal melt. 11 cl, 2 tbl, 3 ex
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