CAJ | 학술논문

通过深入分析铜富氧底吹熔池熔炼过程，结合铜冶金过程相关理论，构建了底吹熔炼体系机理模型。该模型在反应区沿纵向分为7个功能层，分别为烟气层、矿料分解过渡层、渣层、造渣过渡层、造锍过渡层、弱氧化层和强氧化层；炉内沿横向分为反应区、分离过渡区和液相澄清区3个功能区；各层/区分别承担不同的功能，构成一个有机整体，在熔体流场作用下，体系中多相多组元如CuFeS2、FeS2、Cu2S、FeS、2FeO·SiO2、Cu2O、FeO、Fe3O4、SO2、H2O、N2、S2等因物化性质差异，通过层/区间的界面进行快速传质行为；底吹熔炼体系处于动态的非稳态相平衡状态，氧势-硫势在炉内纵向及横向方向上均有梯度变化，通过合理控制不同层/区的氧势-硫势大小，可强化反应过程，进一步提升底吹炉熔炼能力。
통과심입분석동부양저취용지용련과정，결합동야금과정상관이론，구건료저취용련체계궤리모형。해모형재반응구연종향분위7개공능층，분별위연기층、광료분해과도층、사층、조사과도층、조류과도층、약양화층화강양화층；로내연횡향분위반응구、분리과도구화액상징청구3개공능구；각층/구분별승담불동적공능，구성일개유궤정체，재용체류장작용하，체계중다상다조원여CuFeS2、FeS2、Cu2S、FeS、2FeO·SiO2、Cu2O、FeO、Fe3O4、SO2、H2O、N2、S2등인물화성질차이，통과층/구간적계면진행쾌속전질행위；저취용련체계처우동태적비은태상평형상태，양세-류세재로내종향급횡향방향상균유제도변화，통과합리공제불동층/구적양세-류세대소，가강화반응과정，진일보제승저취로용련능력。
Mechanism model of copper oxygen-enriched bottom blowing smelting (BBS) is constructed by analyzing smelting process deeply, combined with related theories of copper metallurgical process. Model ’s cross section includes seven functional layers, i.e. gas layer, mineral decomposition transition layer, slag layer, slag formation transition layer, matte formation transition layer, weak oxide layer and strong oxide layer. Longitudinal section is divided into three functional regions, including reaction region, separation transition region and liquid phase clarification region. The layers or regions play different roles and constitute an organic unit. Ploycomponent, such as CuFeS2,FeS2,Cu2S,FeS,2FeO·SiO2,Cu2O,FeO,Fe3O4,SO2,H2O,N2 and S2, transfers quickly through the interface between different layers and regions, with the effect of character differentiation and fluid flow. BBS is at the state of dynamic non-steady multiphase equilibrium, and the value of oxygen and sulfur potential changes gradually in longitudinal and cross direction, and the capacity of BBS can be raised by reasonably controlling the potential value in different layers and regions.