冷却温度-保温时间对熔分钛渣析晶的影响OA

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.