Practical experiences with rebuilding of a 5t hot blast cupola under condition of installation of 3t cupola have been introduced which could be reference to medium and small enterprises those who are going to rebuild 5t cupolaa from their existing 3t ones.%本文介绍在3t冲天炉安装条件下改装5t热风冲天炉的实践经验.目前应用3t冲天炉的企业不在少数,本文可为应用3t冲天炉的中小企业在现有条件下改装5t冲天炉提供借鉴.
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