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
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Specifications
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Result
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Uniformity Coefficient
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Not More Than 1.5
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1.37
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True Specific Gravity
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1.40 – 1.60
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1.43
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Apparent Specific Gravity
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0.65 – 0.75
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0.71
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Void Percent (%)
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Not Less Than 50 %
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53.1 %
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Friability (%)
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Not More Than 3 %
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1.13 %
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Solubility In Hci (%)
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Not More Than 6.0 %
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0.71 %
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Fixed Carbon
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Not Less Than 80%
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89.41%
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Ash
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Not Less Than 10%
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3.02%
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Volatile Matter
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Not Less Than 10%
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6.55%
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Constant Moisture
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Not Less Than 3%
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1.02%
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Sulfur Content
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Not Less Than 1.0%
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0.48%
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