... Data: Chemical compositions Range Of Grit Sizes Al2O3(%)TiO2(%)SiO2(%)Fe2O3(%)4#-90#94.5-971.5-3 ... , PAC, anthracite filter media, quartz sands, walnut shell filters, garnet filters, polishing sands, rust sands, sponge iron, medical stones, ... ceramic filters, manganese sand filters, zeolite filters, fillers, bulk bauxite, corundum, white corundum, black ...