Abstract: A water model was established by the ratio of 1:2 to simulate bottom blowing of N₂ in a 2t EAF in the CISC's ferrovanadium plant,the influences of different blowing positions and different blowing quantities to the mixing time and flow pattern were mainly investigated through orthogonal analysis. The result shows that the various bottom-blowing patterns and blowing quantities have greatly influence on the molten pool mixing. With orthogonal analysis on the experimental data,it is found that the mixing effect of the blowing gas to the bath is the strongest,the mixing time is the shortest and distribution of flow is reasonable,when the blowing holes is e-b-d and blowing quantity is 1092 L·min ^-1.