Abstract: The gas-liquid two-phase flow behavior in the copper matte bottom-blowing converter was described with the Euler-Euler model, and the simulation results are consistent with the measured results. On this basis, the gas-liquid two-phase flow behavior and the gas volume at different jet angles with double nozzles were described. The results showed that the splash decreases with the increasing of jet angles with double nozzles. When the jet angle is 14 degrees, the splash is the most serious. The transverse penetration distance of gas-liquid jet trajectory and the distribution area of turbulent kinetic energy increase with the increasing of jet angles, and the residence time of the gas phase in the pool increases. However, after the jet angle exceeds a certain range, the vertical distance from the jet nozzle to the liquid surface decreases when the jet angle continues to increase. Then the residence time of gas phase in the pool is shortened. When the jet angle is 28 degrees, the gas volume fraction is the highest and distribution of the turbulent kinetic energy is the largest.