... -180mm110-120mm * Other sizes are also available. We can process silex lining bricks according to customers' requirement on the size of ... silica product is more than 98%.3. Large output, our silex lining brick has been exported worldwide. In September 2012, two ... our best and professional service. silica ball mill lining blocks (silex lining brick,hardness>8, SiO2>99.31%,Fe2O3<0.018%)