Research on the Direct Reduction of Magnetite for different reducing conditions by Hydrogen

The experiment was designed to study the impact of diffident temperatures and reduction time on the direct reduction rate， metallization rate and compressive strength of magnetite. the trends of the furnace temperature during the process of the reduction reaction. the reduction temperature was set at 750 ℃， 800 ℃， 850 ℃， 900 ℃and 950 ℃ in the order，and the hydrogen flow was set at 10L/min in the experiment. the results show that after the magnetite was reduced for 50 minutes above 800 ℃， the metallization rate reached above 93%； the metallization rate of pellet reached above 80% at first 30 minutes at the same temperature； a linear relation between temperature and compressive strength was found，which presented the higher temperature， the lower compressive strength.