电渣重熔过程ANF-6渣Al_2O_3选分结晶对渣皮成分和组织的影响  

Effect of Selective Crystallization of Al_2O_3 in ANF-6 Slag on Ingredient and Structure of Final Slag and Slag Skin during ESR Process

作　　者：赵俊学[1] 李永波[1] 张振强[1] 李小明[1] 崔雅茹[1] 唐雯聃[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,西安710055

出　　处：《特殊钢》2014年第6期9-11,共3页Special Steel

基　　金：国家自然科学基金资助项目(No51174155)

摘　　要：分析和检测了MC5钢7.6 t锭总渣量310 kg ANF-6渣系(/%:69.14CaF_2,29.51Al_2O_3,0.54CaO,0.83SiO_2)电渣重熔(ESR)过程中渣头、渣皮形成过程、成分和结构。结果表明,ESR后渣中CaF_2和Al_2O_3含量明显降低,CaO、SiO_2含量明显增高;ESR渣皮最外层是急冷层,中间层是选分结晶层,Al_2O_3含量明显高于初始值,第3层是共晶层;渣皮在不同高度的平均成分存在明显差异,其中中部渣皮Al_2O_3含量明显高于初始值。The forming process, ingredient and structure of final slag and slag skin during electroslag remelting （ESR） process of 7.6 t ingot of steel MC5 with 310 kg ANF-6 slag （/% ：69. 14CaF2 , 29. 51Al2O3 , 0. 54CAO, 0. 83SIO2 ） are analyzed and examined. Results show that after ESR the CaF2 and Al2O3 content in final slag decrease obviously and the CaO and SiO2 content increase markedly; the ESR slag skin is divided into three layer from outside to inside of skin, that are the outside-rapid cooling layer, the middle-selective recrystallization layer, in this layer the Al2O3 content is obviously higher than that original value, and the inside third layer-eutectic layer; the average ingredient content in different height has obvious difference, in it the Al2O3 content in median part is obvious higher than original value.

关 键 词：电渣重熔 ANF-6渣 渣皮 成分与组织 AL2O3 选分结晶 

分 类 号：TF14[冶金工程—冶金物理化学]