Аннотация
In the work, using scanning electron microscopy, samples of raw aluminum obtained using a complex technology of refining by flux refining with boric acid (H3BO3) in a ladle with further filtration were studied. In recent years, there has been a tendency to involve in the production of lower quality sources of raw materials for the production of anodes, which leads to an increase in impurities in aluminum. This is mainly due to the production of heavy oil (which includes asphaltene compounds). In asphaltenes, metal impurities (Fe, Si, V, Ni, etc.) are concentrated, which, during coking, turn into coke, and then into aluminum. An undesirable impurity in primary aluminum is vanadium, which reduces the electrical conductivity of the metal at a concentration of about 2 ppm. The authors of the work carried out experimental studies on the filtration refining of aluminum melt after flux treatment with boric acid (H3BO3). Detailed studies on a JEOL scanning electron microscope with an INCA Energy microanalysis system showed a decrease in the content of vanadium impurities in the process of flux refining with boric acid and further filtration through a grain filter