... 4. Volatile matter: 6% Gongyi Fuyuan Water Purification Materials Co.,LtdThe detailed description of Anthracite coal Anthracite coal It is the best ... ) It is also used as water treatment filter. Such as, water treatment of services, drinks, minera water, purified water, wine industry, power, petroleum, ... (%)≤1.6Clay content(%)≤4Void(%)47--53 High effective of Anthracite coal for Water purification