Abstract：The iron nugget process using low grade iron ore of high alumina and sulphur as raw material was performed at laboratory scale. The effect of reduction temperature， carbon content， basicity and additives on the reduction and melting behavior of the high alumina ore/coal composite pellet was investigated. The sulphur content of the iron nugget was also analyzed. The standard pellet (without any additives) had bad melting separation and the carburization degree of the reduced iron was low. The increasing of carbon content could improve the melting separation a little. The reduction rate of the pellet would be improved with the increasing of basicity and the pellet could melt better at 1 450 ℃. The sulphur content of the iron nugget gradually decreased as the basicity increased from 0.6 to 1.2 and was obviously low when the basicity was 1.2. The pellet would also melt worse with the Na2CO3 content in the pellet increased and could melt to some extent at 1 450 ℃. The sulphur content of the iron nugget would also gradually decrease. However， the effect of Na2CO3 on the sulphur content of the iron nugget was not much. The sulphur content of the iron nugget was 0.085% and the desulphurization rate was 96.5% with basicity of 1.2， 8% Na2CO3 and 4% CaF2 reduced at 1 450 ℃. The obtained iron nugget could meet the requirement of steel making to some extent.
王 广，薛庆国，王静松. 高铝高硫低品位铁矿粉还原熔分制备珠铁[J]. 钢铁, 2015, 50(11): 14-20.
WANG Guang，XUE Qing-guo，WANG Jing-song. Preparation of iron nugget using low grade iron ore of high alumina and sulphur. Iron and Steel, 2015, 50(11): 14-20.
2015, Vol. 50 
