钢铁钒钛2026，Vol.47Issue(1)：17-27,11.DOI:10.7513/j.issn.1004-7638.2026.01.003
冷却温度-保温时间对熔分钛渣析晶的影响
Effect of cooling temperature-holding time on the crystallization of molten-separated titanium slag
摘要
Abstract
To achieve efficient extraction of titanium components from molten-separated titanium slag,this study took the slag from a steel plant as the research object,and systematically investigated the crystallization behavior of the slag under synergistic control of cooling temperature(1150～1300 ℃)and holding time(0～60 min)through high-temperature melting crystallization experiment and XRD analys-is.The results indicated that the optimal crystallization window for anosovite-MgTi2O5 is 1250～1300 ℃ with 30～50 min,and the precipitation amount reaches 51.2％～56.2％;the optimal crystallization win-dow for pseudobrookite-Fe2TiO5 is 1150～1200 ℃ with 40～60 min,and the precipitation amount is 38％～40％;the optimal crystallization window for rutile-TiO2 is 1150～1200℃ with 0～30 min,and the precipitation amount reaches 25％～35％.The crystallization behaviors of the three phases exhibit an ob-vious competitive relationship,and the optimal crystallization window of a single phase highly overlaps with the suppression regions of the other two.This provides a precise process optimization window for either directional promotion or targeted suppression of specific titanium-bearing phases,offering a the-oretical basis for the directional separation and extraction of titanium components from industrial mol-ten-separated titanium slag.关键词
熔分钛渣/冷却温度/保温时间/析晶行为Key words
molten-separated titanium slag/cooling temperature/holding time/crystallization behavior分类
矿业与冶金引用本文复制引用
李晨辉,杜培培,赵素兴,田铁磊,李兰杰,龙跃..冷却温度-保温时间对熔分钛渣析晶的影响[J].钢铁钒钛,2026,47(1):17-27,11.基金项目
国家重点研发计划重点专项(2024YFC3909503) （2024YFC3909503）
河北省重大科技成果转化专项(23284101Z) （23284101Z）
河钢集团重点科技项目(HG2023209). （HG2023209）
