| 摘要 |
<p>A process for producing silica brick by firing silica stone mainly comprising silica and containing 0.2 to 5 wt % of solidified molten soda lime silicate added thereto, whereby silica brick with a lowered content of residual quartz can be produced readily and efficiently even by using a silica stone which difficultly causes the transformation of quartz. The process comprises crushing silica stone, adding thereto solidified molten soda lime silicate and a binder, molding the mixture, and firing the molding at 1350 to 1500 °C to cause a reaction between the silicate and the silica in the silica stone to thereby cause rapid transformation of the silica into cristobalite and tridymite.</p> |
