... , mining, metallurgy etc. such as ore, slag, coal, metal powder, clay, kieselguhr, kaolin. 2. Agriculture, fodder and fertilizer ... inorganic fertilizers, phosphate, ammonium sulfate. 3. Drying some powder and grain size materials with specific demands. For instance ... , various crystals, precipitated calcium carbonate, activated clay, magnetic powder, graphite, inorganic mud, clay, lime, ore slurry, ...