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第32卷第6期 北京科技大学学报 Vol 32 Na 6 2010年6月 Journal of Un iversity of Science and Techno logy Beijing Jun 2010 基于铁矿粉高温特性互补的烧结优化配矿 吴胜利)戴宇明”DauterOliveir) 裴元东”徐健” 韩宏亮” 1)北京科技大学治金与生态工程学院,北京1000832)淡水河谷矿产品中国)有限公司,上海200120 摘要首先测定巴西、澳洲及中国的10种铁矿粉的高温特性,将其与实际生产统计所得的高温特性适宜区间比较可知:巴 西矿的同化性偏低,澳洲矿偏高,中国精粉则相对接近适宜区间:有两种巴西矿、一种澳洲矿以及一种中国精粉的液相流动性 适宜,一种巴西矿、一种澳洲矿以及两种中国精粉则偏低,一种澳洲矿和一种中国精粉的液相流动性稍高;澳洲矿的黏结相自 身强度偏低,巴西矿和中国精粉则较为适宜,且中国精粉相对更高。在实验研究的基础上,提出基于铁矿粉高温特性互补而使 混合矿高温特性指标适宜的烧结配矿新思路,并设计优化配矿方案,烧结杯实验结果显示均获得优良的烧结指标,证实了基 于铁矿粉高温特性进行配矿的优越性. 关键词铁矿粉:烧结;高温特性;配矿;优化 分类号TF0464 Opti ization of ore blending during sintering based on com plem entation of high tem perature properties WU Sheng Ii,DAI Yu m ing",DauterO liveira',PEI Yuan dong",XU Jian",HAN Hong liang" 1)School ofMetallugical and Ecobgical Engineering University of Science and Technology Beijing Beijng 100083.China 2)Vale M inerals Chna Co Ld.Shanghai200120,China ABSTRACT The high temperature properties of 10 iron ores from Brazil Australia and China were measured By comparison with the optin al zone acquired from practical production statistics several results were obtained as the follow ing The assin ilability of Bra zilian and Australian ores is lwer and higher than the optical zone respectively,but that of Chinese concentrate powders is close to the optical zone The lquid phase fluidity of to Brazilian ores one Australian ore and one Chinese concentrate powder is optial one Brazilian ore,one Australian ore and wo Chinese concentrate powders have bw liquid phase fluidity,but one Australian ore and one Chinese concentrate powder possess high liquid phase fuidity.The self strength of bonding phases in Australian ores is low,but opti mal for Brazilian ores and Chinese concentrate powders while the self strength of bonding phases in Chinese concentrate powders is higher than in Brazilian ores On the basis of experinental research,a new concept which makes the high temperature properties of m ixed ores optinal based on complem entation of high temperature properties was proposed,and the optin ization schemes of ore blend ing were designed The result of sinter pot test ndicates that good sinterng indexes are obtained,which proves the superiority of ore blending based on high temperature properties of iron ores KEY WORDS iron ore sintering high temperature properties ore blending optin ization 中国高炉炼铁的主要入炉含铁原料是烧结矿,的冲击川.另外,随着金融危机席卷全球,降低成本 烧结矿的质量对高炉生产有重要影响,而烧结矿的 成为各企业亟待解决的问题回.因此,有必要深入 质量很大程度上受限于烧结工艺所使用的铁矿粉原 研究烧结优化配矿技术,在兼顾资源战略、烧结矿产 料.近年来,优质铁矿粉资源越来越少,一些劣质铁 质量指标的同时降低生铁成本 矿粉进入中国市场,给各企业的烧结生产带来一定 传统上的烧结铁矿粉研究主要集中在常温特性 收稿日期:20090824 作者简介:吴胜利(195S一),男,教授,博士生导师,Emai让wushengl@usth edu cn第 32卷 第 6期 2010年 6月 北 京 科 技 大 学 学 报 JournalofUniversityofScienceandTechnologyBeijing Vol.32No.6 Jun.2010 基于铁矿粉高温特性互补的烧结优化配矿 吴胜利1) 戴宇明1) DauterOliveira1,2) 裴元东1) 徐 健1) 韩宏亮1) 1)北京科技大学冶金与生态工程学院,北京 100083 2)淡水河谷矿产品(中国)有限公司,上海 200120 摘 要 首先测定巴西、澳洲及中国的 10种铁矿粉的高温特性,将其与实际生产统计所得的高温特性适宜区间比较可知:巴 西矿的同化性偏低,澳洲矿偏高,中国精粉则相对接近适宜区间;有两种巴西矿、一种澳洲矿以及一种中国精粉的液相流动性 适宜,一种巴西矿、一种澳洲矿以及两种中国精粉则偏低,一种澳洲矿和一种中国精粉的液相流动性稍高;澳洲矿的黏结相自 身强度偏低,巴西矿和中国精粉则较为适宜,且中国精粉相对更高.在实验研究的基础上,提出基于铁矿粉高温特性互补而使 混合矿高温特性指标适宜的烧结配矿新思路,并设计优化配矿方案,烧结杯实验结果显示均获得优良的烧结指标,证实了基 于铁矿粉高温特性进行配矿的优越性. 关键词 铁矿粉;烧结;高温特性;配矿;优化 分类号 TF0464 Optimizationoforeblendingduringsinteringbasedoncomplementationofhigh temperatureproperties WUShengli1),DAIYuming1),DauterOliveira1,2),PEIYuandong1),XUJian1),HANHongliang1) 1)SchoolofMetallurgicalandEcologicalEngineering,UniversityofScienceandTechnologyBeijing,Beijing100083,China 2)ValeMineralsChinaCo.Ltd.,Shanghai200120,China ABSTRACT Thehightemperaturepropertiesof10ironoresfromBrazil,AustraliaandChinaweremeasured.Bycomparisonwith theoptimalzoneacquiredfrompracticalproductionstatistics,severalresultswereobtainedasthefollowing.TheassimilabilityofBra zilianandAustralianoresislowerandhigherthantheopticalzone,respectively,butthatofChineseconcentratepowdersisclosetothe opticalzone.TheliquidphasefluidityoftwoBrazilianores,oneAustralianoreandoneChineseconcentratepowderisoptimal,one Brazilianore,oneAustralianoreandtwoChineseconcentratepowdershavelowliquidphasefluidity,butoneAustralianoreandone Chineseconcentratepowderpossesshighliquidphasefluidity.TheselfstrengthofbondingphasesinAustralianoresislow,butopti malforBrazilianoresandChineseconcentratepowders,whiletheselfstrengthofbondingphasesinChineseconcentratepowdersis higherthaninBrazilianores.Onthebasisofexperimentalresearch,anewconcept,whichmakesthehightemperaturepropertiesof mixedoresoptimalbasedoncomplementationofhightemperatureproperties,wasproposed,andtheoptimizationschemesoforeblend ingweredesigned.Theresultofsinterpottestindicatesthatgoodsinteringindexesareobtained,whichprovesthesuperiorityofore blendingbasedonhightemperaturepropertiesofironores. KEYWORDS ironore;sintering;hightemperatureproperties;oreblending;optimization 收稿日期:20090824 作者简介:吴胜利(1955—),男,教授,博士生导师,Email:wushengli@ustb.edu.cn 中国高炉炼铁的主要入炉含铁原料是烧结矿, 烧结矿的质量对高炉生产有重要影响,而烧结矿的 质量很大程度上受限于烧结工艺所使用的铁矿粉原 料.近年来,优质铁矿粉资源越来越少,一些劣质铁 矿粉进入中国市场,给各企业的烧结生产带来一定 的冲击[1].另外,随着金融危机席卷全球,降低成本 成为各企业亟待解决的问题[2].因此,有必要深入 研究烧结优化配矿技术,在兼顾资源战略、烧结矿产 质量指标的同时降低生铁成本. 传统上的烧结铁矿粉研究主要集中在常温特性
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