Effect of B₂O₃ on the sintering process of vanadium–titanium magnet concentrates and hematite

This work studied the effect of B₂O₃ (analytical reagent) on the parameters of a sinteringpot test, as well as the metallurgical properties and microstructure of the sinter samples, to determinethe feasibility of applying solid waste containing B₂O₃ in vanadium–titanium sintering. The resultsshow that along with B₂O₃ addition, the mechanical strength of the sinter first increases and thendecreases; the maximum strength was found upon the addition of 3.0% of B₂O₃. The low-temperaturereduction and pulverization rate of the vanadium–titanium sinter were also improved, while the startand end temperatures of softening showed a decreasing trend. The microstructure of the sinter wasfound to change from plate structure to particle and point structure, with uniformly distributed smallareas. The sintering pots created by B₂O₃ addition had low total porosity but a greater pore diameterthan pots created without the reagent.