添加物对RH法用镁铬砖高温挥发性和抗渣性的影响  

Effects of additives on high-temperature volatilization and slag-resistance of magnesite-chrome bricks for RH refining process

作　　者：曲殿利[1] 钟香崇[1] 孙加林[1] 洪彦若[1] 何万保[2] 窦叔菊[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]鞍山科技大学材料科学与工程学院

出　　处：《耐火材料》2003年第3期133-135,共3页Refractories

摘　　要：在电熔再结合镁铬砖中分别加入 3 %的高温下比Cr2 O3稳定的添加物TiO2 、ZrO2 和Al2 O3,研究了这些添加物对其高温挥发性和抗渣性的影响。结果表明 :这些添加物可有效地抑制镁铬砖的高温挥发 ,提高制品的抗渣性。同时 ,由于减小了熔渣侵入而形成的致密层的厚度 ,使其结构剥落损毁明显减小。在实验所选用的添加物中 ,以加入α Al2Adding right quantity additives including TiO 2,ZrO 2,Al 2O 3,etc. to rebonded magnesite-chrome bricks,those additives are more stable than Cr 2O 3 at high temperature,study the effect of these additives on high-temperature volatilization and slag-resistance.The results show:these additives can effectively control high-temperature volatilization and improve slag-resistance of magnesite-chrome bricks.Meanwhile,because of the reduction of thickness of dense layer that is formed by slag penetration,structure spalling is reduced obviously.Among the additives selected in the test,adding 3 wt% α-Al 2O 3 is the best.

关 键 词：添加物 RH法 高温挥发性 抗渣性 电熔再结合镁铬砖 

分 类 号：TQ175.716[化学工程—硅酸盐工业]