工程科学学报2016，Vol.38Issue(12)：1695-1701,7.DOI:10.13374/j.issn2095-9389.2016.12.006
动态氧化条件下含钛高炉熔渣中金属铁的聚集、长大与沉降行为
Coalescence, growth and settling of metallic Fe droplets in molten Ti-bearing blast furnace slag under dynamic oxidation condition
摘要
Abstract
To explore the coalescence,growth and settling behavior of metallic Fe droplets under the dynamic oxidation condition,the effects of oxidation time,air stirring intensity and pure oxygen oxidizing on the coalescence of metallic Fe were investigated in this paper.The changes in temperature and viscosity of the molten slag were studied during the dynamic oxidation process,and the settling speed of metallic Fe was calculated.It is indicated by lab and 1200 kg pilot-scale experiments that low valence titanium is oxidized b y blowing the oxidizing gas.As the temperature increases,the viscosity of the slag decreases,which accelerates the coalescence,growth and settling of metallic Fe droplets.With a longer oxidizing time,low valence titanium and (FeO) finally almost vanish,and metallic Fe droplets are oxidized,resulting in the decrease of metallic Fe recovery.The judgment of the oxidation end point depends on the (FeO) and low valence titanium content.关键词
高炉渣/动态氧化/铁颗粒/聚集/长大/沉降Key words
blast furnace slag/dynamic oxidation/iron particles/coalescence/growth/settling分类
矿业与冶金引用本文复制引用
张力,张武,李光强..动态氧化条件下含钛高炉熔渣中金属铁的聚集、长大与沉降行为[J].工程科学学报,2016,38(12):1695-1701,7.基金项目
国家科技支撑计划资助项目(2015BAB18B00) （2015BAB18B00）
