Application and development of reproducing alumina magnesia carbon brick

     Alumina magnesia carbon brick, with Al2O3, MgO and C are carbon-containing refractory as a main component. Containing Al2O3 60% ~ 69%, MgO7% ~ 14%, C5% ~ 12%. It has good slag resistance and thermal shock resistance; there are trace amounts of heavy firing expansion. To enhance its antioxidant activity, may be appropriate in the ingredients of Si powder, Al powder, Sic powder or ferrosilicon powder additives to the resin as binder, pressure forming, after 200 ~ 300 ℃ can be used without calcined. They are characterized by high strength, good corrosion and erosion resistance, spalling resistance. Alumina magnesia carbon brick is mainly used for large converters and ultra-high power electric furnace ladle refining furnace lining and so on. It is a good refractory lining materials for ladle wall and bottom.
      Alumina magnesia carbon brick is mainly used as a ladle lining brick and taphole brick. In recent years, it gets good results after application in several steel mills. Such as in Zhengzhou the first steel mill, 5 tons EAF and 15tons ladle. The service life is usually about 60-70 times. It saves cost and improves economic efficiency.
      The reproducing alumina magnesia carbon bricks were prepared with the dumped bricks as starting materials. The bulk density, apparent porosity, crushing strength, modulus of rupture and slag resistance of the specimen were analyzed. The results show that the used refractories can be reused and recycled by the right method. The reproducing alumina-magnesia-carbon bricks with better abilities were prepared!
      In a word, the development prospect of alumina magnesia carbon brick is broad. They will be widely used in electric furnace and converter of steel plant in the future. The economic efficiency is remarkable.