What are the main ingredients of refractory bricks?
2020-3-10 · Materials containing more than 90% SiO2 are usually called silicon refractory materials, mainly including silicon bricks and fused silica products. Silica bricks are produced using silica as the main raw material, and their SiO2 content is generally not less than 93%. The main mineral composition is scaly quartz and cristobalite.
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