| abstract |
The invention relates to the field of refractory materials, in particular to a ceramic-bonded iron-aluminum spinel kiln mouth castable, which, in parts by weight, comprises: 60-80 parts of aggregate, 30-45 parts of powder and 3-45 parts of binder 8 parts; wherein, the aggregates include iron-aluminum spinel and porous silicon-alumina ceramics, and the porous silicon-alumina ceramics are obtained by sintering silicon dioxide, aluminum oxide and boron oxide. The ceramic-bonded iron-aluminum spinel kiln mouth castable in the present invention can effectively improve the compactness of the castable after casting and molding through a reasonable configuration between aggregates and powders. At the same time, the silicon-alumina ceramics in the present invention It has a porous structure, so during the sintering process of each component of the castable, the pores in the silicon-alumina ceramic can absorb the volume expansion generated during the fusion process of each component, thereby reducing the internal stress of the castable after sintering and reducing the cracking and peeling. defect. The castable not only has good compactness after sintering, but also can release the internal stress, making the overall structure more stable. |