Influence of nature and particle size distribution on granulation of iron ore mixtures used in a sinter strand
Influence of nature and particle size distribution on granulation of iron ore mixtures used in a sinter strand
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DOI：
10.1179/030192303225004187
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发表时间：
2003-12-01
影响因子：
2.1
通讯作者：
Cores, A
中科院分区：
文献类型：
--
作者：
Formoso, A;Moro, A;Cores, A
介绍了混矿造粒工艺，研究了构成混矿部分的一系列铁矿石的造粒适宜性。良好的造粒和最高烧结温度的控制使获得最佳烧结结构成为可能，该结构由针状铁氧体晶格包围的赤铁矿核心形成。还确定了用于生产一系列烧结矿的混合矿的造粒适宜性。实践证明，获得了结构优化的烧结矿。用造粒指数(G指数)对一系列铁矿石进行分类。分析了ACERALIA公司近几年来混合矿G指数的演变，验证了G指数的提高是如何提高生产率和降低烧结矿焦耗的。
The ore mixture granulation process is described and the granulation fitness of a series of iron ores forming part of the mixture is studied. Good granulation and control of the maximum sintering temperature makes it possible to achieve the optimum sinter structure, formed by a hematite nucleus surrounded by a lattice of acicular ferrites. The granulation fitness of ore mixtures used to manufacture a series of sinters in a pilot plant are also determined. It is verified that sinters with an optimum structure have been obtained. A series of iron ores are classified using the granulation index (G index). The evolution of the G index of ore mixtures used in ACERALIA during recent years is considered and it is verified how improvement of the G index increases productivity and decreases coke consumption in the sinter strand.