Method of producing silica brick

Details Method of producing silica brick Method of producing silica brick

C - Chemistry, Metallurgy

04

B

C04B 35/14 (2006.01)

Patent

CA 2090723

Abstract A method which enables easy and efficient production of silica brick having small content of residual silica by firing from a siliceous stone material containing silica as the main component, even when the siliceous stone material used is of the type in which transformation of silica is not easy to occur. The method is characterized by adding . 0.2 to 5 wt% of Na2O-CaO-SiO2 fused and solidified material to the siliceous stone material. The Na2O-CaO-SiO2 fused and solidified material, together with a binder, is added to pulverized siliceous stone material, and the mixture is then formed followed by a firing at 1350 to 1500°C, so that the Na2O-CaO-SiO2 fused and solidified material reacts with silica in the siliceous stone material to promote transformation of the silica into cristobalite and tridymite.

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