The Experimental Study on Direct Reduction of Shaft Furnace Based Gas of Vanadium Titanium Magnetite

The gas based reduction behavior and the influence factors of vanadium titano magnetite were studied. The influence of reduction temperature,reduction time,reduction atmosphere and gas flow rate on percent of reduction and metallization rate were analyzed. The result shows that the percent of reduction is 96.72%,the metallization rate is 92.05% when temperature is 1 000 ℃,time is 2 h,atmosphere is 21%CO+55%H₂+24%N₂,gas flow rate is 13.26 L/min. The Fe of iron oxide of vanadium titano magnetite can be reduced,and realize efficient enrichment of Fe by using gas based shaft furnace direct reaction.