烧结制粒工艺研究进展

阐述了各种烧结制粒工艺及其发展,并对各制粒工艺进行了比较,重点阐述了基于原料性质的分层制粒工艺。应用传统的烧结制粒工艺处理多孔铁矿石,烧结利用系数、烧结矿冷强度和还原性都下降。而试验应用基于原料性质的分层制粒工艺,不但可以减少烧结矿过熔,而且液相流动性也得到改善,烧结料层的透气性增加,烧结利用系数及烧结矿的强度明显提高。

Research Progress of Sintering Granulation Process

This article describes all kinds of sintering pelletizing processes and their developments and made the comparisons. The layered granulation process based on the feedstock property is presented on emphasis. When porous iron ore was processed by traditional granulation process, the utilization coefficient of sintering, sinter cold strength and the reducibility decreased all. The test results used the layered granulation process showed that not only the over melt of the sinter was reduced, but also the liquid phase flowability was improved. Therefore, the permeability of the sinter bed increased and the sintering utilization coefficient and the sinter strength were improved significantly.