4-6cm Raw Material Mineral Grinding Flint Pebble with Low Abrasion

4-6cm Raw Material Mineral Grinding Flint Pebble with Low Abrasion. High Purity Silica Content: SiO2 content is greater than or equal to 99.31% with low Fe2O3 levels. Low Abrasion Rate: Actual abrasion rate is less than or equal to 1.35% for efficient grinding. Customizable Sizes: Available in various sizes including 2-4cm, 4-6cm, and custom requests. High Hardness and Density: Hardness around 8 with volume density of 2.66 to 2.68 g/cm3. Wide Industry Application: Suitable for ceramic, glass, cement, and zirconium silicate industries. Customizable Packaging: Mark and label are customizable to meet specific client needs. Free Sample Availability: Free samples are available for testing before placing an order. Manufacturer Direct Supply: Direct from factory with over 20 years of export experience.