METHOD FOR PRODUCING ALUMINIUM-BASED ALLOY AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC C25C3/06 C22C21/00 C22C1/02 C22B1/02 

FIELD: metallurgy.

SUBSTANCE: method for producing an aluminium-based alloy containing 1-3 wt % of scandium, involves preparing and melting of a mixture containing sodium, potassium and aluminium fluorides, continuously feeding into the melt at the temperature of 800-950°C of scandium oxide in an amount providing the maintenance of scandium oxide in the melt at a level of 1-8%, simultaneous aluminothermic reduction of scandium from its oxide and electrolytic decomposition of the formed alumina, periodic discharge of the produced alloy with the given composition and pouring of molten aluminium after unloading the alloy in the amount equal in weight to the unloaded alloy. The device for producing an alloy contains a steel casing lined inside with a refractory brick, with a bottom and a lid, an anode, a cathode, a graphite crucible placed on the bottom graphite block, which, with the blooms installed, is a current lead to the cathode, and between the inner lining of the casing and the heating elements are placed outside the crucible, and a dispenser is installed in the lid for continuous supply of scandium oxide, and an opening is provided for periodically charging the aluminium and periodically discharging the resulting alloy.

EFFECT: invention allows to obtain an alloy of aluminium-scandium with the given composition, ensures high purity of the final product and a high level of scandium extraction.

6 cl, 1 dwg, 5 ex