Semi-silica brick is an aluminum silicate refractory product with an alumina (Al2O3) content of 15-30%, and is a semi-acidic refractory brick. Semi-silica bricks generally use refractory clay containing quartz sand, pyrophyllite, refractory clay or kaolin beneficiation tailings as raw materials. Semi-silica bricks shrink less during firing, because at 1250°C, the quartz in the raw material is converted into cristobalite, and the volume expands, which partially offsets the shrinkage produced during clay sintering. The manufacturing process of semi-silica bricks can be divided into two types: fired or not fired. The manufacturing process of fired bricks is basically the same as that of clay bricks; non-fired bricks are mostly made of water glass as a binder.
Semi silica brick details
Introducere companiei Rongsheng
Rongsheng Company este un furnizor profesionist de materiale refractare, cu 10 ani de experiență în export, exportând în mai mult de 80 ţări. Principalele produse ale companiei Rongsheng includ diverse cărămizi refractare, materiale refractare neformate, materiale metalurgice, materiale termoizolante și așa mai departe.
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