低品位块矿烧结工艺正交试验优化研究

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英文篇名：Optimization of Orthogonal Test for Low-grade Iron Ore Sintering Process 作者：易正明 ; 陈轩 ; 杨福 ; 聂礼 ; 杜东 ; 张东升 英文作者：YI Zheng-ming;CHEN Xuan;YANG Fu;NIE Li;DU Dong;ZHANG Dong-sheng;Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking, Wuhan University of Science and Technology;Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology;National-Provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan University of Science and Technology;Shuicheng Iron & Steel Group Co Ltd; 关键词：烧结杯试验 ; 褐铁矿 ; 正交设计 ; 低品位矿 ; 烧结 ; 铺底料 英文关键词：sinter pot test;;limonite;;orthogonal design;;low-grade ore;;sintering process;;bedding material 中文刊名：KYGC 英文刊名：Mining and Metallurgical Engineering 机构：武汉科技大学钢铁冶金新工艺湖北省重点实验室;武汉科技大学钢铁冶金与资源利用省部共建教育部重点实验室;武汉科技大学高温材料与炉衬技术国家地方联合工程研究中心;水城钢铁集团有限公司; 出版日期：2019-06-15 出版单位：矿冶工程 年：2019 期：v.39;No.187 基金：国家自然科学基金(51604199) 语种：中文; 页：KYGC201903019 页数：4 CN：03 ISSN：43-1104/TD 分类号：80-83

摘要

为了合理利用低品位矿产资源,以褐铁矿、赫章块矿为研究对象,设计四因素三水平正交试验,分别使用褐铁矿、赫章块矿、烧结矿作铺底料,研究了烧结碱度、MgO含量、配碳量对烧结成品率、烧结矿转鼓强度与冶金性能等烧结指标的影响,并获得了优化的烧结工艺参数。验证试验结果表明,选取褐铁矿作烧结铺底料,最佳烧结工艺参数为:烧结碱度2.2、配碳量6.0%、MgO含量1.9%,在此工艺下烧结成品率可以达到72.80%,烧结矿转鼓指数68.01%,低温还原粉化性83.0%,还原性85.08%;在烧结过程中能有效脱除块矿所含结晶水、硫等有害杂质,提高块矿铁品位,冶金性能得到改善,有助于高炉顺行。
        To make appropriate utilization of the low-grade ore resources, a four-factor and three-level orthogonal test was carried out for principally studying limonite and Hezhang ore. In the test, with limonite, Hezhang ore and sinter ore as bedding materials, the influences of sinter basicity, MgO content and carbon content on sinter yield, tumbler strength, metallurgical properties and other sintering indicators were investigated, and an optimal combination of sintering process parameters were obtained. In the verification test with limonite as the bedding material, sinter basicity of 2.2, as well as contents of carbon and magnesium respectively at 6.0% and 1.9%, the sinter yield reached 72.80%, tumbler strength was 68.01%, low-temperature reduction disintegration index was 83.0% and reduction index was 85.08%. In addition, the detrimental impurities such as crystalized water and sulphur were effectively removed in the sintering process, resulting in the iron grade increased and the metallurgic performance improved, which could facilitate the normal operation of blast furnace.

引文

[1] 马建明,吴初国.对我国低品位铁矿资源开发利用的思考[J].国土资源情报,2008(2):27-28.
    [2] 刘晓军,康学军.块矿作烧结铺底料技术及其应用[J].烧结球团,2014,39(5):18-19.
    [3] 张小龙.烧结使用块矿铺底料的生产实践[J].钢铁研究,2013,41(1):41-43.
    [4] 洪益成.褐铁矿烧结基础性能的研究[J].钢铁研究学报,2010,22(9):9-12.
    [5] 付菊英,姜涛,朱德庆.烧结球团学[M].长沙:中南大学出版社,1995.
    [6] 肖志新,薛正良,胡正刚,等.合理使用低品位矿粉的烧结试验研究[J].钢铁研究,2014,42(4):1-5.
    [7] Zhang F,Zhu D Q,Pan J.Sintering Performance of Blends Containing High Proportion of Limonite[M].Springer International Publishing,2017.
    [8] Kou J,Sun T C,Li Y L,et al.Studies on the Effects of Particle Size in Direct Reduction Roasting of Limonite Ores[J].Advanced Materials Research,2012,402:546-551.
    [9] Chen J A,Liu J.Direct Reduction Experiment on Low-Grade Limonite at Jiang Xi[J].Advanced Materials Research,2013(5):1029-1032.
    [10] 武强,朱子宗,曾见华,等.低品位复杂矿烧结碱度优化试验[J].钢铁,2016,51(1):8-12.
    [11] Xiao Z,Chen L,Yang Y,et al.Effect of Coarse-grain and Low-grade Iron Ores on Sinter Properties[J].ISIJ International,2017,57(5):795-804.
    [12] 陈魁.试验设计与分析[M].北京:清华大学出版社,2005.