Influence of Glass Dust on Properties of Alumina-carbon Refractories

作者：MA Weikui,LIU Guoqi,YU Jianbin,QIAN Fan,YANG Wengang

摘要：In order to improve the properties of alumina-carbon refractories,specimens were prepared using white fused corundum,zirconia-mullite and flake graphite as the raw materials,phenolic resin as the binder,adding different mass fractions(1.5%,2.0%,and 2.5%,respectively)of glass dust,cold isostatic pressing by 120 MPa,drying and firing at 900℃for 3 h.Effects of the glass dust addition on the apparent porosity,bulk density,cold modulus of rupture,hot modulus of rupture and thermal shock resistance were studied.The results show that the cold modulus of rupture of the specimens is improved significantly as the results of glass dust accelerating sintering.However,the hot modulus of rupture decreases.As the glass phase buffers the strain produced by thermal shock,the thermal shock resistance of alumina-carbon specimens is improved,especially for low carbon alumina-carbon materials.

發文機構：State Key Laboratory of Advanced Refractories

關鍵詞：ALUMINA-CARBONmaterialGLASSphasehotMODULUSofRUPTUREthermalshockresistance

分類號： TQ1[化學工程]