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本文的目的是研究超高碱度(CaO/SiO_2高达3.25)烧结矿生产的问题,并找出解决办法。采用印度比莱钢厂所属矿山的铁矿粉进行了试验室正交设计试验,以研究这些矿粉的烧结性能。试验表明,烧结指标在很大程度上受烧结过程的效率和下道冷却工序的影响。当烧结含过多粉末的混合料时,料层的温度曲线增宽。传热性质差及其所引起的烧结效率低,可从细粒熔剂颗粒的固结机理得到解释。这点已为矿相鉴定所证实。介绍了反映工艺参数变化的多元线性回归方程。通过工艺参数的最佳配合,推荐了改进烧结指标和降低焦粉消耗的一套制度。
The purpose of this paper is to study the production of ultra-high alkalinity (CaO / SiO 2 up to 3.25) sinter and to find solutions. Orthogonal design tests were carried out using iron ore powder from mines owned by Bieu Steel in India to study the sintering properties of these ore powders. Experiments show that the sintering index is largely affected by the efficiency of the sintering process and the next cooling process. When sintering a mixture containing too much powder, the temperature profile of the layer broadens. The poor heat transfer properties and the resulting low sintering efficiency are explained by the solidification mechanism of the finely divided flux particles. This has been confirmed by the identification of the mine. The multivariate linear regression equation reflecting the change of process parameters is introduced. Through the best matching of process parameters, a set of system for improving sintering index and reducing coke consumption is recommended.