回转窑烧成带用镁铁铝尖晶石砖的研制与应用

Development of magnesia-hercynite brick in burning zone of rotary kiln and its application

以新理论、新工艺合成出了结晶完好、质地均匀的铁铝尖晶石,并以合成的铁铝尖晶石为原料制备了镁铁铝尖晶石砖。大量应用结果表明,研制的镁铁铝尖晶石砖具有窑皮形成迅速、稳定、导热率小及使用寿命长等优点,总体性能超过了镁铬砖,满足了大型回转窑烧成带的无铬化要求。

The hercynite with good crystallization and uniform texture was synthesized based on new theory and process,and the magnesia-hercynite brick was prepared with hercynite as raw materials.The application results showed that the kiln coating formed rapidly and stability when using magnesia-hercynite brick.The magnesia-hercynite brick had low thermal conductivity and long service life,and its overall performance was better than magnesia-chrome brick.The magnesia hercynite brick could satisfy the chrome free requirement of burning zone of large-scale rotary kiln.