Quartzite (SiO2 ≥ 98%, whiteness> 87%): Is the quartzite powder is recrystallized sandstone forming, processing mined with high purity, harmful impurities such as Fe, Ca very low response demand manufacturing refractory bricks, copper and grinding additive used in production assistant super phosphate, ceramics, plaster walls, a carrier for plant protection products, fertilizer quartz bon..cat water purification, fisheries the provincial…