20钢管LF精炼渣系优化的工业试验
【文章页数】:3 页
【部分图文】:
图1各炉精炼渣黏度计算结果??Fig.?1?Calculation?result?of?viscosity?of?refining?slag?at?each?heat??4??-1^???11??
sity?of?each?heat??如表4和表5所示。??2.2结果分析??对渣系黏度利用Factsage进行计算,如图3所??示。可以看出。碱度和钙铝比的波动更加稳定,并??且渣系的黏度均大于1.5?Pa???s,符合黏度在??1.5? ̄?2.0?Pa???s的设计要求,这使....
图3试验炉次精炼渣黏度??Fig.?3?Refining?slag?viscosity?of?each?heat??
??46????特殊钢??第41卷??炉次??图3试验炉次精炼渣黏度??Fig.?3?Refining?slag?viscosity?of?each?heat??如表4和表5所示。??2.2结果分析??对渣系黏度利用Factsage进行计算,如图3所??示。可以看出。碱度和钙铝比....
图2?Ca0-Al203-Si02三元渣系等黏度图??Fig.?2?Isoviscosity?diagram?of?Ca0-AU03-Si02?ternary?slag?sys???tem??
O)?=58%? ̄64%。??2优化试验及结果分析??2.?1试验方案??20钢管的冶炼工艺为100?t电弧炉—100?t?LF??—VD—连铸。电弧炉出钢后钢包中残留的渣量为??200?kg左右,出钢阶段加人500?kg石灰,200?kg化??渣剂,80?kg铝块,LF精炼阶段....
图4?Ca〇-Al203-Si02三元渣系中低熔点区域??Fig.?4?Low?melting?region?in?CaO-Al2?03-Si02?ternary?slag?system??
?表6试验钢各炉次B类夹杂评级水平??Table?6?Rating?of?B?inclusion?rating?in?steel?of?test?each??heats??B类夹杂/级??入??粗??细??1??1.0??0.5??2??0.5??1.0??3??1.0??0.5....
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