关键词: 高炉;陶瓷杯;新型塑性相复合刚玉砖

Abstract: With the development of blast furnace ironmaking process, the working condition of hearth is deteriorating for the adoption of low-grade raw materials and intensive smelting which leading the service life of ceramic cup became shorter.On the analysis of the refractory damage of blast furnace ceramic cup, the original plastic composite corundum bricks were upgraded by the introduction of compound additive, using organic resin binder and optimizing the burning system and then the new plastic composite corundum bricks were produced.The new product is new structures refractory which combined by plastic phase and carbon and has excellent overall performances.It has a low porosity(11.0%), but also have very excellent thermal shock resistance, and improved erosion resistance.The new product has a moderate heat conduction which is 6.22 W·(m·K)-1 at 1000 ℃, so the bricks can provide very good thermal insulation and protection carbon bricks and can have a good service life.

Key words: blast furnace;ceramic cup;new plastic composite corundum brick