工程科学学报，第41卷，第2期：181-189,2019年2月 Chinese Joural of Engineering,Vol.41,No.2:181-189,February 2019 DOI:10.13374/j.issn2095-9389.2019.02.004;http://journals.ustb.edu.cn 高碱度烧结矿矿相结构分布模式及形成机理 陈前冲区，韩秀丽，刘磊 华北理工大学矿业工程学院，唐山063210 区通信作者，E-mail:cx20170529@126.com 摘要基于烧结矿的非均性，发现了矿相结构的三种分布模式，并对矿相结构的形成机理进行了阐述.首先，基于烧结矿的 手标本鉴定特征把某钢厂烧结矿划分成了三类.其次，对矿相结构的鉴定发现，第1类、第2类、第3类这三类烧结矿的矿相 结构在空间上依次具有“均一状、同心环状、互嵌状”三种分布模式.均一状分布的矿相结构形成于温度较高、还原性较强和 混料均匀的稳定条件之中，主要为交织熔蚀-熔蚀结构，具有良好的治金性能：同心环状分布的矿相结构从外部带到内部带依 次为交织熔蚀结构、熔蚀结构和赤铁矿粒状结构，多以独立单元的形式出现，其所在区域工艺条件的恶化并不会对烧结矿总 体的结构和治金性能造成太大影响：交织熔蚀结构、赤铁矿粒状结构和铁酸钙聚集区交叉形成的互嵌状矿相结构，多形成于 温度较低、气流不稳定和混料不均匀的条件之中，易成片出现而导致烧结矿结构和治金性能的恶化.最后，治金性能分析显 示，第1,2类烧结矿各项治金性能指标良好，具有互嵌状分布模式的第3类烧结矿由于矿相结构的不均匀，治金性能相对较 差.结果表明，这种基于矿相结构分布模式的研究方式，有利于对矿相结构形成机理的阐述，更助于对烧结原料、烧结气氛等 工艺条件的调控，对烧结矿冶金性能的改善具有一定理论价值. 关键词高碱度烧结矿：矿相结构：分布模式：形成机理：治金性能 分类号TF046.4 Distribution patterns and formation mechanisms of the mineralogical structure of high basicity sinter CHEN Qian-chong,HAN Xiu-li,LIU Lei College of Mining Engineering,North China University of Science and Technology,Tangshan 063210,China Corresponding author,E-mail:cx20170529@126.com ABSTRACT Based on their inhomogeneity,three distribution pattern categories of the mineralogical structure of sinters,and their formation mechanisms,were detailed.First,based on the identifiable characteristics of hand specimens,the sinters in a steel plant were divided into three categories (Category 1,Category 2,Category 3).Second,according to the identification characteristics of the microstructure of sinters,three distribution patterns of the mineralogical structure for the three categories of sinters were established, those being uniform,concentric annular,and intercalated.The homogeneous mineral phase structures,which have good metallurgical properties,are mostly interlaced erosion and erosion structure,and the mineral phase structures are formed under stable conditions with higher temperature,stronger reduction,and uniform mixture.The concentric annular mineralogical structures from the outside to the inner belt are interlaced erosion structure,erosion structure,and hematite granular structure,separately.These structures formed un- der deteriorative process conditions and have no obvious adverse effect on the overall structure and metallurgical properties of sinters. The intercalated mineral phase structure,formed by the interlaced erosion structure,hematite granular structure,and calcium ferrate accumulation area,is mostly formed under conditions of lower temperature,unstable air flow,and inhomogeneous mixture.Getting to- gether may lead to the deterioration of the structure and metallurgical properties of the sinter.Finally,the results of a metallurgical per- 收稿日期：2018-01-14 基金项目：国家自然科学基金资助项目(51574105)：河北省钢铁联合基金资助项目(2016209299)工程科学学报,第 41 卷,第 2 期:181鄄鄄189,2019 年 2 月 Chinese Journal of Engineering, Vol. 41, No. 2: 181鄄鄄189, February 2019 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2019. 02. 004; http: / / journals. ustb. edu. cn 高碱度烧结矿矿相结构分布模式及形成机理 陈前冲苣 , 韩秀丽, 刘 磊 华北理工大学矿业工程学院, 唐山 063210 苣通信作者, E鄄mail: cx20170529@ 126. com 摘 要 基于烧结矿的非均性,发现了矿相结构的三种分布模式,并对矿相结构的形成机理进行了阐述. 首先,基于烧结矿的 手标本鉴定特征把某钢厂烧结矿划分成了三类. 其次,对矿相结构的鉴定发现,第 1 类、第 2 类、第 3 类这三类烧结矿的矿相 结构在空间上依次具有“均一状、同心环状、互嵌状冶三种分布模式. 均一状分布的矿相结构形成于温度较高、还原性较强和 混料均匀的稳定条件之中,主要为交织熔蚀鄄鄄熔蚀结构,具有良好的冶金性能;同心环状分布的矿相结构从外部带到内部带依 次为交织熔蚀结构、熔蚀结构和赤铁矿粒状结构,多以独立单元的形式出现,其所在区域工艺条件的恶化并不会对烧结矿总 体的结构和冶金性能造成太大影响;交织熔蚀结构、赤铁矿粒状结构和铁酸钙聚集区交叉形成的互嵌状矿相结构,多形成于 温度较低、气流不稳定和混料不均匀的条件之中,易成片出现而导致烧结矿结构和冶金性能的恶化. 最后,冶金性能分析显 示,第 1、2 类烧结矿各项冶金性能指标良好,具有互嵌状分布模式的第 3 类烧结矿由于矿相结构的不均匀,冶金性能相对较 差. 结果表明,这种基于矿相结构分布模式的研究方式,有利于对矿相结构形成机理的阐述,更助于对烧结原料、烧结气氛等 工艺条件的调控,对烧结矿冶金性能的改善具有一定理论价值. 关键词 高碱度烧结矿; 矿相结构; 分布模式; 形成机理; 冶金性能 分类号 TF046郾 4 收稿日期: 2018鄄鄄01鄄鄄14 基金项目: 国家自然科学基金资助项目(51574105);河北省钢铁联合基金资助项目(E2016209299) Distribution patterns and formation mechanisms of the mineralogical structure of high basicity sinter CHEN Qian鄄chong 苣 , HAN Xiu鄄li, LIU Lei College of Mining Engineering, North China University of Science and Technology, Tangshan 063210, China 苣Corresponding author, E鄄mail: cx20170529@ 126. com ABSTRACT Based on their inhomogeneity, three distribution pattern categories of the mineralogical structure of sinters, and their formation mechanisms, were detailed. First, based on the identifiable characteristics of hand specimens, the sinters in a steel plant were divided into three categories (Category 1, Category 2, Category 3). Second, according to the identification characteristics of the microstructure of sinters, three distribution patterns of the mineralogical structure for the three categories of sinters were established, those being uniform, concentric annular, and intercalated. The homogeneous mineral phase structures, which have good metallurgical properties, are mostly interlaced erosion and erosion structure, and the mineral phase structures are formed under stable conditions with higher temperature, stronger reduction, and uniform mixture. The concentric annular mineralogical structures from the outside to the inner belt are interlaced erosion structure, erosion structure, and hematite granular structure, separately. These structures formed un鄄 der deteriorative process conditions and have no obvious adverse effect on the overall structure and metallurgical properties of sinters. The intercalated mineral phase structure, formed by the interlaced erosion structure, hematite granular structure, and calcium ferrate accumulation area, is mostly formed under conditions of lower temperature, unstable air flow, and inhomogeneous mixture. Getting to鄄 gether may lead to the deterioration of the structure and metallurgical properties of the sinter. Finally, the results of a metallurgical per鄄