In-situ observation on dissolution of CaO-SiO_(2)-Al_(2)O_(3)complex inclusions in refining slag  

作　　者：Yu-die Gu Ying Ren Li-feng Zhang 

机构地区：[1]School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing(USTB),Beijing,100083,China [2]School of Mechanical and Materials Engineering,North China University of Technology,Beijing,100144,China

出　　处：《Journal of Iron and Steel Research International》2025年第2期376-387,共12页钢铁研究学报(英文版)

基　　金：support from the National Key R&D Program(No.2023YFB3709900);the National Natural Science Foundation of China(Grant No.U22A20171);the High Steel Center at the North China University of Technology;the University of Science and Technology Beijing,China.

摘　　要：The dissolution behavior of complex inclusions in refining slag was studied using confocal laser scanning microscope.Based on the dissolution curve of complex inclusions,the main rate-limiting link of CaO-SiO_(2)-Al_(2)O_(3)complex inclusions was the diffusion in the molten slag.The dissolution rate of CaO-SiO_(2)-Al_(2)O_(3)complex inclusions was affected by the composition and size of inclusion.The functional relationship between the dimensionless inclusion capacity(Zh)and the dimensionless dissolution rate(Ry)of CaO-SiO_(2)-Al_(2)O_(3)complex inclusions was calculated as Ry=2.10×10^(-6)Zh^(0.160),while it was Ry=2.10×10^(-6)Zh^(0.0087)for Al_(2)O_(3)-CaO complex inclusions.On this basis,the complete dissolution time and rate of the complex inclusions were calculated by using the function relation between the Zh and Ry numbers.

关 键 词：INCLUSION Confocal laser scanning microscope Refining slag Dissolution kinetics 

分 类 号：TG1[金属学及工艺—金属学]