Development and Application of Chrome-free Refractory Materials for RH Degasser  

作　　者：LI Hongxia LIU Jun FENG Haixia ZHANG Lixin 

机构地区：[1]Sinosteel Luoyang Institute of Refractories Research Co.,Ltd. [2]State Key Laboratory of Advanced Refractories [3]Sinosteel Refractory Co.,Ltd.

出　　处：《China's Refractories》2014年第4期1-5,12,共6页中国耐火材料（英文版）

摘　　要：The research progress and industrial application of chrome-free refractories for RH degasser were introduced in the paper.It is proved that unburned magnesia-spinel refractories used for RH throat and snorkel in Baosteel have longer service life compared with traditional direct bonded fused magnesia-chrome materials.The new developed chrome-free unburned magnesia-spinel composite can fully meet the present demand for RH operation and can be applied extensively for RH processing.At present,instead of chrome-containing materials,chrome-free refractories have been applied widely for RH in Baosteel.Super low carbon MgO-C material with high mechanical properties at mild and high temperatures can be an alternative chrome-free material for RH.The research progress and industrial application of chrome-free refractories for RH degasser were introduced in the paper.It is proved that unburned magnesia-spinel refractories used for RH throat and snorkel in Baosteel have longer service life compared with traditional direct bonded fused magnesia-chrome materials.The new developed chrome-free unburned magnesia-spinel composite can fully meet the present demand for RH operation and can be applied extensively for RH processing.At present,instead of chrome-containing materials,chrome-free refractories have been applied widely for RH in Baosteel.Super low carbon MgO-C material with high mechanical properties at mild and high temperatures can be an alternative chrome-free material for RH.

关 键 词：RH degasser chrome-free refractories unburned magnesia-spinel materials 

分 类 号：TQ175.7[化学工程—硅酸盐工业]