A Study on Electrically Conducting Magnesia—carbon Bricks for DC EAF  

作　　者：TONGXiaojun YANLiyi 等 

机构地区：[1]RefractoriesCo.ofAnshanIron＆SteelCorp.,Anshan114021,China [2]NortheasternUniveristiy,Shenyang110006,Chin

出　　处：《China's Refractories》1998年第4期25-29,共5页中国耐火材料（英文版）

摘　　要：This paper gives a brief introduction to a kind of special refractories for DC EAF-electrically conducting magnesia-carbon bricks.The application of the conductive magnesia-carbon brick as a hearth electrode is a trend of development in DC arc furnace hearth bootom because of its features of anti corrosion and easy repatching,This is a proven process already available abroad.After a study of teh effect of different amount of graphite added and pretreating temperatures on the eletric-conductivity of magnesia-carbon bricks it has been found that for a balance between electric and thermal conductivities,the proper amount of graphite to be added should be 8%-14% and the pretreatment at temperature of 1300-1500℃ will result in the formation inside the magnesia-carbon bricks of a continuous three-dimensional network of graphite and semi-coke,thus making the brick conductive.

关 键 词：电导性 氧化镁 碳 耐火砖 炼钢炉 直流电弧炉 石墨 

分 类 号：TF748.41[冶金工程—钢铁冶金] TF748.05