Specification of High Calorie Anthracite Coal All Sizes
Is A Kind Of Older Coal With High Carbon Characteristics And Volatile Metter Lower Than Bituminous , Lignite , Brown Cool , Colored More Shiny . Used As A Filter Media For Water Treatment Or As A Substitute For Silica Sand Used Together With Silica Sand . Carbon Element In Anthracite Has A High Resistance To Water And Chemicals . Anthracite Crystal Shapes Resembling Diamond ( Diamond ) Have Good Physical Endurance To Shock And Friction .
Performance Anthracite As Filter Media
Filter Turbidity ( Turbidity ) In The Form Of Insoluble Material ( Suspended Solids ) In The Cavities Of The Outside ( External Void ) .
Performance Is Not As Activated Carbon Anthracite , Activated Carbon Which Absorbs The Dissolved Material ( Dissolved Solid ) In The Cavities In The ( Internal Voids ) . So That The Dissolved Material Can Be Caught Anthracite , It Is Necessary To First Treatment-Treated And Converted Into Insoluble Material .
Filter Turbidity ( Turbidity ) A Lot More .
Silica Sand Has A Uniform Grain Shape And Heavier , So The Layer Filters ( Filter Layer ) Becomes Congested And The Percentage Of Cavities ( Voids External ) Becomes Less . This Causes The Amount Of Filtered Turbidity Is Reduced . While The Anthracite Grains Each Having A Different Shape , The Cavity Becomes Large Percentage , And Finally Can Filter Turbidity Greater .
Specification Of Anthracite Filter Medium
Inspection Inspection Items | Specifications | Result |
Uniformity Coefficient | Not More Than 1.5 | 1.37 |
True Specific Gravity | 1.40 – 1.60 | 1.43 |
Apparent Specific Gravity | 0.65 – 0.75 | 0.71 |
Void Percent (%) | Not Less Than 50 % | 53.1 % |
Friability (%) | Not More Than 3 % | 1.13 % |
Solubility In Hci (%) | Not More Than 6.0 % | 0.71 % |
Fixed Carbon | Not Less Than 80% | 89.41% |
Ash | Not Less Than 10% | 3.02% |
Volatile Matter | Not Less Than 10% | 6.55% |
Constant Moisture | Not Less Than 3% | 1.02% |
Sulfur Content | Not Less Than 1.0% | 0.48% |