| 摘要 |
A mullite containing cementing mix particularly suited for silicon carbide containing shapes is shown that is adapted to be initially activated when mixed with water and set by air drying so that it can subsequently permanently set by firing the mortar in situ. The mullite component is first mixed in a raw batch with ball clay, a chemically active alumina, bentonite, sodium silicate and a borosilicate glass frit and then after this composition is mixed with water and air dried, the cement is fired in place to react certain of the constituents in the mix and sinter the mullite phase in a bonded relation with the surface of the shapes being cemented in place. A refractory furnace liner or the like may thus be fabricated for example wherein the silicon carbide containing shapes forming the liner are held in place with an inert strongly adhering cement having substantially the same thermal expansion properties as the shapes being bonded. |
