ABSTRACT This study proposes a method of adding Na₂B₄O₇ to remove titanium and vanadium impurities from primary aluminium. The effect of Na₂B₄O₇ to the aluminium melt on the removal of titanium and vanadium impurities was investigated, with a focus on the influence of varying addition amounts and holding times. According to the results, the chemical reaction occurring within the melt was postulated and a thermodynamic calculation was conducted. At 750°C and holding times of 30 min, the impurity contents of titanium and vanadium gradually decrease with an increase the amount of Na₂B₄O₇. At an addition of 0.8 wt.%, the removal rates were observed to be 53.3% and 76.3%, respectively. The impurity removal effect exhibited a positive correlation with the holding times. Holding for 90 min, the content of titanium and vanadium impurities decreased from 15 and 97 ppm to 1 and 6 ppm, with removal rates of 93.3% and 93.8%, respectively. Thermodynamic calculation results indicate that B undergoes spontaneous reaction with titanium and vanadium, forming TiB₂ and VB₂, which precipitate at the bottom, thereby explaining the observed decrease in impurities. This study provides ideas and data reference for the removal of titanium and vanadium impurities in aluminium matrix.