One of the methods forming the shell is to appropriately design the coolingstaves and hearth without overheating during the campaign life of the furnace. The three-dimensionalsteady mathematical models for calculating...One of the methods forming the shell is to appropriately design the coolingstaves and hearth without overheating during the campaign life of the furnace. The three-dimensionalsteady mathematical models for calculating the temperature distribution in the coolers andtwo-dimensional unsteady mathematical models with phase-change latent heat for calculating thetemperature distribution of the hearth bottom were established. The calculation results show thatthe formation of the slag-metal protection shell can be achieved by optimizing the design parametersof the coolers. Increasing the heat conductivity of the carbon brick can move the isothermal lineof 1150 deg C upward outside the hearth bottom.展开更多
结合前期水模拟结果,利用FLUENT软件对100 t LF炉进行了底吹氩气的多相流数值模拟,模拟结果表明:优化后钢包熔池速度与湍流动能分别增大了12.2%和15.1%,死区体积减小了35.6%,有利于钢包内熔池的传热、传质以及夹杂物去除等。将优化后钢...结合前期水模拟结果,利用FLUENT软件对100 t LF炉进行了底吹氩气的多相流数值模拟,模拟结果表明:优化后钢包熔池速度与湍流动能分别增大了12.2%和15.1%,死区体积减小了35.6%,有利于钢包内熔池的传热、传质以及夹杂物去除等。将优化后钢包底吹位置应用于某100 t LF炉,结果表明:T[O]去除率提高了6.3%,增[N]率降低了11.5%;大型夹杂物去除率提高5.7%;总夹杂物去除率提高了5.2%。达到优化钢包结构,改善钢液流动状态,促进夹杂物上浮,提高LF炉精炼的目的。展开更多
基金The work was financially supported by"95"key project of China(No.1997-02-08).]
文摘One of the methods forming the shell is to appropriately design the coolingstaves and hearth without overheating during the campaign life of the furnace. The three-dimensionalsteady mathematical models for calculating the temperature distribution in the coolers andtwo-dimensional unsteady mathematical models with phase-change latent heat for calculating thetemperature distribution of the hearth bottom were established. The calculation results show thatthe formation of the slag-metal protection shell can be achieved by optimizing the design parametersof the coolers. Increasing the heat conductivity of the carbon brick can move the isothermal lineof 1150 deg C upward outside the hearth bottom.
文摘结合前期水模拟结果,利用FLUENT软件对100 t LF炉进行了底吹氩气的多相流数值模拟,模拟结果表明:优化后钢包熔池速度与湍流动能分别增大了12.2%和15.1%,死区体积减小了35.6%,有利于钢包内熔池的传热、传质以及夹杂物去除等。将优化后钢包底吹位置应用于某100 t LF炉,结果表明:T[O]去除率提高了6.3%,增[N]率降低了11.5%;大型夹杂物去除率提高5.7%;总夹杂物去除率提高了5.2%。达到优化钢包结构,改善钢液流动状态,促进夹杂物上浮,提高LF炉精炼的目的。
