Investigation on the Reduction Features of Carbon-containing Pellets of Bayan Obo Iron Ore Concentrate

Carbon-containing pellets of Bayan Obo iron ore concentrate and the other ordinary iron ore concentrate were used for the isothermal reduction experiments at 950 ~1 100 ℃.Under the same reduction conditions,the features of the carbon-containing pellets of Bayan Obo iron ore concentrate were obtained by comparing the reduction degree and the shrinkage rate of two kinds of pellets.Experiment results show that the reduction degree of the carbon-containing pellets of Bayan Obo iron ore concentrate is more than that of ordinary iron ore concentrate,but the difference valuebetween them decreases with increasing reduction temperature.For the two kinds of pellets,shrinkage rate of pellets and pellet’s surface cracking degree are bigger when reduction temperature increases. However,the shrinkage rate of pellets of the carbon-containing pellets of Bayan Obo iron ore concentrate is bigger than that of the ordinary iron ore concentrate.