to obtain the molded article having a desired shape from the above mentioned slurry a method for obtaining the molded article is not particularly limited and there can be used for example cast molding press molding or extrusion molding of these cast molding is preferred because the slurry can be densely filled in a mold and the resulting molded article easily becomes high in density the resulting molded article may be burned subsequently moving to a burning step as it is however when a large amount of water remains in the molded article or when the molded article is rapidly elevated in temperature in the burning step a drying step may be employed before the burning step is performed as needed for fear of rapid evaporation of water in the molded article to generate cracks or the like in a burned article the drying step may be performed under conditions under which water in the molded article is gradually evaporated and a known method can be employed then the burning step is performed to obtain a fused siliceous refractory from the above mentioned molded article there is no limitation on the burning temperature as long as it is a temperature at which fused silica powder particles are sintered together however it is suitably from 1050 to 1250 u00b0 c and.