中文    English    Amthracite Filter Physical Density Specific Gravity 1.4~1.6 g/cm3 Bulk Density 750 – 780 g/m3 Hardness (Mohs) 3 ~ 4 Hardgrove 44 – 50 Density Above 1.8g/cm3 8% max Porosity 50% min Mud Content 4% max Attrition Losses (100 hours backwash) <0.4% Solubility (24 hours 10% HCI) <3.5% According to the standard "CJ 24.2-88" of Ministry of Construction R.R. of China Chemical Composition Carbon 85% BAsh 4 – 8% Volatile 5.0 – 7.0% sdf Standard Size 0.6 – 1.2 mm 0.66 mm 0.8 – 1.6 mm 0.88 mm 1.2 – 2.5 mm 1.31 mm 1.4 – 2.5 mm 1.52 mm 1.4 – 2.8 mm   2.5 – 5.0 mm 1.55 mm 5.0 – 10.0 mm Within size range 10.0 – 20.0 mm ----------- Unigormity Coefficient ≤1.6 Other sizes can be made to meet the customer's exact requirements   Copyright 2005　Wuxi Ding Long Co., Ltd