Abstract：A certain low-aluminum ore powder from Australia has the advantage of low Al2O3, coarse-grain size and strong assimilability, etc. It is one of the main sources of imported ore for domestic iron and steel enterprises. However, the low-aluminum ore powder is on the verge of exhaustion, so it has become an urgent demand to find other iron ore powder to replace it. The change of high temperature behavior of the binder phase with different iron ore powders replacing the low aluminum ore powder was investigated by means of micro-sintering. The results showed that when the South American mineral OA was added, the bond assimilability was weakened, the liquid fluidity was enhanced, and the calcium ferrite content decreased. When the North African iron ore OB powder was added, the bond assimilability and liquid fluidity were enhanced, but the calcium silicate content was increased. When Australian iron ore OC and OD were added, the assimilability of the binder was weakened and the content of high alumina brittle minerals was increased. Based on this, the low aluminum ore powder could be replaced by the combination of Australian iron ore powder OC and North African iron ore powder OB, which enhanced the bond assimilability and fluidity, increased the content of calcium ferrite, and suppressed the generation of inferior minerals.
李彬, 张宗旺, 吴胜利, 陆亚男, 胡一帆, 张众. 不同铁矿粉替代澳洲低铝矿粉对烧结黏结相高温行为的影响[J]. 中国冶金, 2021, 31(12): 8-14.
LI Bin, ZHANG Zong-wang, WU Sheng-li, LU Ya-nan, HU Yi-fan, ZHANG Zhong. Effect of different iron ore replaced Australian low aluminum ore powder on high temperature behavior of sintered binder phase[J]. China Metallurgy, 2021, 31(12): 8-14.
2021, Vol. 31 
