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烧结矿的多孔结构形成过程中,燃烧熔融带上的烧结矿荷重会引起气流阻塞,导致生产率降低及成品烧结矿质量差。为了减轻重力的影响,一种新的烧结技术——支架支撑烧结应运而生。通过在料层内安装支架来支撑烧结矿,进而减少由重力和抽风所引起的料层收缩,使下部料层获得较高透气性。本文通过烧结杯实验,考察了安装不同尺寸支架对烧结指标和烧结矿冶金性能的影响。实验表明,应用尺寸为300×100 mm的支撑板,烧结利用系数、烧成率、成品率、转鼓强度等指标是各组实验中最好的,尽管还原度略有下降,但仍可满足生产要求。
During the formation of the porous structure of sinter, the load of sinter on the combustion and melting zone can cause the blockage of the gas flow, resulting in the decrease of productivity and the poor quality of finished sinter. In order to reduce the impact of gravity, a new sintering technology - stent support sintering came into being. Sintering can be supported by installing brackets in the material layer, thereby reducing material layer shrinkage caused by gravity and draft, resulting in higher air permeability of the lower material layer. In this paper, sintering cup experiments were conducted to investigate the influence of different sizes of brackets on the sintering index and the metallurgical properties of sinter. Experiments show that the application of the size of 300 × 100 mm support plate, sintering coefficient, firing rate, yield, drum strength and other indicators of the best in each group of experiments, although the degree of reduction decreased slightly, but still meet Production requirements.