The invention relates to the field of synthesis of aluminum intermediate alloys, in particular to a preparation technology of an aluminum intermediate
alloy. According to the preparation technology of the aluminum intermediate
alloy, aluminum ingots are fed into an electric
induction furnace and molten, and the temperature of the molten aluminum is raised to 660-850 DEG C; then,
magnesium fluoride,
sodium hexafluoroaluminate,
potassium hexafluoroaluminate and
potassium chloride are mixed into a mixture, the mixture is fed into the electric
induction furnace, and the temperature is raised to 750-1000 DEG C; one or two of
scandium oxide and
scandium chloride are added into the electric
induction furnace to a reaction, and after the reaction is qualified, a slagging former is added to remove remaining fused salt on the surface of the
alloy; the temperature of the alloy is kept at 760-900 DEG C, a rotating exhauster is used for feeding
argon to conduct refining degassing; and then, the slagging former is added for secondary slagging treatment. By the adoption of the preparation technology of the aluminum intermediate alloy, the electric induction furnace is utilized, the
chloride and the
fluoride are mixed and then added to high-temperature molten aluminum with the surface covered with fused salt, the aluminum-
scandium alloy is directly generated, and the problems that when the aluminum-scandium alloy is prepared through a mix-melting method, cost is high, the
energy consumption is high, time is long, efficiency is low, and the quality is not stable are solved.