G-high calcined anthracite is produced when anthracite is calcined under the temperature of 1240¡ãc in vertical shaft furnaces. G-high calcined anthracite is mainly used in electric steel ovens, water filtering, rust removal in shipbuilding and production of carbon material. Specifications: Gh-cac-1 Fc(fixed carbon) 95% min, ash 4.0% max, vm(volatile matter) 1.0% max, s(sulphur)0.3% max, moisture 1.0% max Gh-cac-2 Fc(fixed carbon) 93% min, ash 5.5% max, vm(volatile matter) 1.5% max, s(sulphur) 0.3% max, moisture 1.0% max Gh-cac-3 Fc(fixed carbon) 90% min, ash 8.0% max, vm(volatile matter) 2.0% max, s(sulphur 0.5% max, moisture 1.0% max Size 1-3mm, 1-4mm, 1-5mm, 4-10mm, or at customers'option. At customers'option