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Effect of Bonding Area Formation During Sintering on the Reaction Characteristics of Iron Ores
Steel Research International ( IF 2.2 ) Pub Date : 2021-06-23 , DOI: 10.1002/srin.202100206
Tae Jun Park 1, 2 , Byong Chul Kim 1 , Il Sohn 3
Affiliation  

This study aims to understand the effect of sintering at 1623 K on the reaction characteristics of iron ores. By investigating the reaction characteristics of nine different iron ores with disparate properties, new reactivity indices including the iron ore reactivity index (IRI) and iron ore blending reactivity index (IBRI) independent of the sample size are derived based on the melt penetration depth of preformed cubicalironore tablets. Furthermore, the effect of sintering on the reactivity of iron ore is also identified. Using a rapid heating/cooling infrared furnace equipment, duplicate iron ore reaction tests are conducted to increase the reproducibility of the results. The case of a high IBRI in the sintering process increases the product yield and average particle size of the sinter. When the IBRI increases by 0.1, the product yield increases by 0.4% and the average size of the sintered ore increases by 0.1 mm. The results show that the degree of reaction between iron ore and additives can be estimated during the iron ore blending step and be easily applied in managing commercial-scale sinter production and quality.

中文翻译:

烧结过程中结合区的形成对铁矿石反应特性的影响

本研究旨在了解在 1623 K 下烧结对铁矿石反应特性的影响。通过研究具有不同性质的 9 种不同铁矿石的反应特性,基于预制件的熔体渗透深度推导出新的反应性指数,包括与样品尺寸无关的铁矿石反应性指数 (IRI) 和铁矿石混合反应性指数 (IBRI)。立方体片。此外,还确定了烧结对铁矿石反应性的影响。使用快速加热/冷却红外炉设备,进行重复的铁矿石反应测试,以提高结果的重现性。烧结过程中高 IBRI 的情况会增加产品产量和烧结物的平均粒度。当 IBRI 增加 0.1 时,产品收率提高0.4%,烧结矿平均粒度增加0.1mm。结果表明,铁矿石和添加剂之间的反应程度可以在铁矿石混合步骤中估算出来,并且很容易应用于管理商业规模的烧结生产和质量。
更新日期:2021-06-23
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