Kinetics of Low-Temperature Aluminothermic Reduction of Iron Tantalate

The kinetics of low-temperature (900–1180°C) reduction of iron tantalate (98.2 wt % FeTa2O6, 1.8 wt % Ta2O5, and particle size <0.1 mm) with an excess of aluminum (particle size <0.14 mm) and Al : FeTa2O6 molar ratio equal to 6 is studied. The differential scanning calorimetry and X-ray phase analysis data show that the reduction process terminates approximately at 1180°C to form TaFeAl, TaAl3, and Ta17Al12 metal products. The thermokinetic...