Abstract
"This article presents the results of comparative experimental studies on the complex two-stage processing of primary aluminum by flux treatment with boric acid (H3BO3) in a ladle with further filtration purification of the melt through granular filters and one-stage filtration purification of primary aluminum through active granular filters with boric acid additives. The research was carried out within the framework of grant funding by the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan under the Zhas Galym competition under the IRN АР19175493 project «Development of technology for refining primary aluminum with active surface filters». The research results showed that a complex one-stage technology for cleaning raw aluminum from non-ferrous metal impurities using active filters reduces their content in primary aluminum. Laboratory studies showed a decrease in the content of vanadium by 53.3 %, copper by 19.8 %, magnesium by 49.6 %, manganese by 51.7 % and silicon by 97.1 % in primary aluminum when using the active filter cleaning method. A comparative analysis of aluminum purification methods showed that the issue of using active filters needs further study in order to determine the degree of purification from non-ferrous metal impurities, depending on various parameters of the active filter. Keywords: aluminum, non-ferrous metal impurities, filtration, boric acid, flux, active filter. "