BaO对连铸保护渣熔化行为和结晶矿相的影响

特殊钢 ›› 2006, Vol. 27 ›› Issue (6): 7-9.

BaO对连铸保护渣熔化行为和结晶矿相的影响

董方,王艺慈,王宝峰

内蒙古科技大学材料与冶金学院，包头014010

收稿日期:2006-04-24 出版日期:2006-11-01 发布日期:2023-03-01
作者简介:董方(1964-),男，副教授，1987年毕业于东北大学钢铁冶金专业。

Influence of BaO on Melting Behavior and Crystalline Phase of Concasting Mold Powder

Dong Fang,Wang Yici , Wang Baofeng

School of Material and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010

Received:2006-04-24 Published:2006-11-01 Online:2023-03-01

摘要/Abstract

摘要： 实验研究和分析了BaO(2%～8%)对连铸结晶器保护渣(%:3～5MgO、1～2Al₂O₃、8Na₂O、3～4B₂O₃、2Li₂O、3～4C)熔化和结晶温度的影响以及无氟渣的结晶矿相。结果表明,随BaO含量由2%增加至8%,保护渣的熔化温度由1053℃降至1011℃,结晶温度降低较少,从954℃降至948℃;无氟渣的结晶矿相为黄长石,是铝黄长石(Ca₂Al₂SiO₇)、镁黄长石(Ca₂MgSi₂O₇)和钠黄长石(NaCaAlSi₂O₇)的固溶体,可通过调整渣膜中黄长石的析晶率,控制结晶器与坯壳间的传热。

Abstract: The influence of BaO(2%~8%)on melting and crystalline temperature of concasting mold powder-3~ 5 MgO,1~2 Al₂O₃,8Na₂O,3～4B₂O₃,2Li₂O,3～4 Cand the crystalline phases of free fluoride mold fluxes have been studied and analyzed. The results showed that with increasing BaO content from 2% to 8%,the melting temperature of mold powder decreased obviously from 1053 ℃ to 1011 ℃ while the crystalline temperature decreased minor from 954 ℃ to 948℃;the crystalline mineral phase of free fluoride mold fluxes was melilite which was solid solution of aluminium- melilite(Ca₂Al₂SiO₇),akermanite(Ca₂MgSi₂O₇)and sodium-melilite(NaCaAlSi₂O₇),and it is available through adjustment of crystalline rate of melilite in fluxes to control the heat transfer between mold and shell of strand.

董方, 王艺慈, 王宝峰. BaO对连铸保护渣熔化行为和结晶矿相的影响[J]. 特殊钢, 2006, 27(6): 7-9.

Dong Fang, Wang Yici , Wang Baofeng. Influence of BaO on Melting Behavior and Crystalline Phase of Concasting Mold Powder[J]. Special Steel, 2006, 27(6): 7-9.