Silica Fiber Blanket Products.

Zircar Refractory Composites has introduced the Silica Fiber Blanket-Type SI Moldable, a wet blanket that is a combination of high-purity amorphous silica fibers with an inorganic silica binder. Upon drying, the product becomes rigid and displays useful properties up to 2012F (1100C). The moldable exhibits good wet handleability, and it is easy to cut with a scissors or knife before it is applied directly to equipment to form complex contours. Drying can be accomplished in an oven, with a hot air gun or torch, or by exposure to heat in the application. Removal of water renders the moldable permanently rigid. The product will tolerate all acids except hydrofluoric acid, and because it is not wet by molten aluminum, it is useful in many applications in which refractory ceramic fiber is not desired. In addition, the firm has introduced silica fiber blanket Type SB-2000, a high-temperature insulation blanket made of mechanically interlocked continuous filament amorphous silica fibers. The product, good for temper atures up to 2012F, is useful in a variety of applications, including as an investment casting shell wrap and for furnace door linings and seals. The blanket is not affected by thermal shock, exhibits thermal conductivity and heat storage in the range of refractory ceramic fiber blanket, and is made of 97.85% silica.