RH精炼炉用无铬耐火材料的研究与应用  

RESEARCH AND APPLICATION OF CHROME FREE REFRACTORY FOR RH REFINING FURNACE

作　　者：黄财德[1] 王崇[1] 钟凯 张启东[1] Huang Caide;Wang Chong;Zhong Kai;Zhang Qidong(Shougang Jingtang United Iron and Steel Co.,Ltd.,Tangshan,Hebei,063200;Research Institute of Technology of Shougang Group Co.,Ltd.,Beijing,100043)

机构地区：[1]首钢京唐钢铁联合有限责任公司,河北唐山063200 [2]首钢集团有限公司技术研究院,北京100043

出　　处：《河北冶金》2018年第9期26-31,共6页Hebei Metallurgy

摘　　要：从RH精炼炉用含铬耐火材料损毁机理分析入手,研究了影响其寿命的因素,并提出用不烧镁尖晶石砖替代镁铬砖。通过在镁尖晶石体系中引入了轻烧氧化镁细粉和氧化铝微粉及加入金属铝粉,可以有效地提高镁尖晶石砖的高温强度、抗钢水冲刷能力及抗剥落性能。经过RH耐材无铬化试验,验证:使用无铬耐材后,RH钢水氮含量控制更稳定,寿命超过原含铬耐火材料使用寿命,并取得了良好的经济效益和社会效益。Through the analysis of the damage mechanism of chrome refractories in RH refining furnace,the factors affecting the life of the refractories are studied,and the unfired magnesia spinel brick instead of magnesia chrome brick is put forward. By adding light calcined magnesia powder,alumina micro powder and Al powder into magnesia spinel system,the high temperature strength,erosion resistance and spalling resistance of magnesia spinel brick can be effectively improved. Through the chromium-free test of RH refractory,it is verified that the nitrogen content of RH molten steel is more stable after using chromium-free refractory,and the service life of RH refractory is longer than original chromium-containing refractory,and good economic and social benefits are obtained.

关 键 词：RH精炼炉 耐火材料 损毁机理 使用寿命 

分 类 号：TF748.5[冶金工程—钢铁冶金] TQ175.7[化学工程—硅酸盐工业]