有色金属科学与工程2025，Vol.16Issue(1)：1-7,7.DOI:10.13264/j.cnki.ysjskx.2025.01.001
Al2O3/TiO2/Na2O对石灰在炼钢渣中溶解的影响
Influence of Al2O3/TiO2/Na2O on lime dissolution in steelmaking slag
摘要
Abstract
A red mud-based flux containing Al2O3,TiO2,and Na2O constituents exhibits a pronounced flux-enhancing effect on traditional steelmaking slag systems.Therefore,the research on the dissolution mechanism of lime in steelmaking slag and the factors influencing its dissolution rate is significant in advancing the development of fluoride-free fluxes in steelmaking.In this experiment,the dissolution rate of lime in steelmaking slag containing Al2O3,TiO2,and Na2O was measured using the cylindrical rotation method,and analysis and demonstration of mineral phase changes during its melting process was conducted.The results indicates that the promotion coefficient for lime dissolution at 1 400℃decreases in the order of Na2O>TiO2>Al2O3,and adding 10%Na2O can increase the promotion coefficient for lime dissolution by a factor of seven.Furthermore,this paper explores the effects of Al2O3,TiO2,and Na2O on the diffusion of CaO in the slag and the lime decomposition reaction at the boundary layer,elucidating the dissolution mechanism of lime under these conditions.The concurrent presence of A12O3/TiO2/Na2O in red mud-based flux has been identified as a suitable steelmaking flux.关键词
石灰溶解/A12O3/TiO2/Na2O/炼钢渣Key words
lime dissolution/Al2O3/TiO2/Na2O/steelmaking slag分类
冶金工业引用本文复制引用
皮溅清,王明理,张延玲,赵宏博,余阚,李更..Al2O3/TiO2/Na2O对石灰在炼钢渣中溶解的影响[J].有色金属科学与工程,2025,16(1):1-7,7.基金项目
国家重点研发计划资助项目(2019YFC1905701) （2019YFC1905701）
