Optimization and Application of Corundum-spinel Purging Plugs for Refining Ladles  

作　　者：YU Lingyan YU Xingguo ZHANG Xin 

机构地区：[1]Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.

出　　处：《China's Refractories》2015年第4期39-41,共3页中国耐火材料（英文版）

摘　　要：Corundum - spinel purging plugs were optimized through adjusting the formulation and the particle size composition of starting materials to prolong the service life of purging plugs for a 60 t refining ladle in a steel plant. Th.e optimized formulatioa is 30 mass% tabular corundum （6 - 3 mm ） , 20 mass% tabular corundum （3-1 ram）, 22 mass% tabular corundum （1 -0.5 ram） ＋ sintered spinel, 28% tabular corundum fines （0. 045 mm） ＋ fused spinel （0. 045 mm） ＋ bimodal α-Al2O3 micropowder ＋ Secar71 cement. The on-site results show that the plug can achieve an obviously long service life of 18 cycles, saving cost greatly.Corundum - spinel purging plugs were optimized through adjusting the formulation and the particle size composition of starting materials to prolong the service life of purging plugs for a 60 t refining ladle in a steel plant. Th.e optimized formulatioa is 30 mass% tabular corundum （6 - 3 mm ） , 20 mass% tabular corundum （3-1 ram）, 22 mass% tabular corundum （1 -0.5 ram） ＋ sintered spinel, 28% tabular corundum fines （0. 045 mm） ＋ fused spinel （0. 045 mm） ＋ bimodal α-Al2O3 micropowder ＋ Secar71 cement. The on-site results show that the plug can achieve an obviously long service life of 18 cycles, saving cost greatly.

关 键 词：ladles purging plugs SLIT physical properties 

分 类 号：TF341[冶金工程—冶金机械及自动化] TQ175.7[化学工程—硅酸盐工业]