METHOD OF OBTAINING ALUMINIUM-SILICON ALLOYS Russian patent published in 2018 - IPC C22C21/02 C22C1/02 

FIELD: metallurgy.

SUBSTANCE: invention relates to non-ferrous metallurgy, in particular to electrolytic production of aluminium, and can be used in the preparation of aluminum alloys with a high content of silicon (silumins) of the grades AK5M2, AK7, AK7pch, AK8M3, AK9, AK12 and others. Method of obtaining aluminium-silicon alloys comprises loading a charge mixture into an electrolysis cell and electrolysis in a molten electrolyte, wherein the charge mixture used is microsilica, which is loaded into aluminium containers in an amount corresponding to silicon content in the aluminium alloy of 2 to 10 wt%, the containers are preheated to a temperature of 300 to 400 °C, and then introduced into the electrolysis cell under the electrolyte layer, the electrolysis being carried out by continuously circulating the melt in the electrolyte at a temperature of 940 to 950 °C and voltage on the electrolysis cell from 4.25 to 4.30 V.

EFFECT: method makes it possible to obtain aluminium-silicon alloys directly in an electrolysis cell, efficiently use wastes of silicon production without dusting during loading, reduce power consumption due to the direct addition of microsilica into the melt, and also makes it possible to control the loading of charge materials depending on the specified silicon content in the alloy.

1 cl, 6 ex, 1 tbl