Quartzite (SiO2 ≥ 98%, whiteness> 85%): Is the quartzite powder is recrystallized sandstone forming, processing mined with high purity, harmful impurities such as Fe, Ca very thapdap application require production of refractory bricks, copper and grinding additive used in production assistant super phosphate, ceramics, plaster walls, a carrier for plant protection products, water filtration division bon..cat quartz, glass
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