Specification of Anthracite
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 .
Filtering Through The Deepest Layers Of The Filter . The Shape Of Each Grain Anthracite Are Not Uniform , And A Mass Of Light , Causing The Filter Layer Is Not Easy To Condense , So The Performance Of The Filtering Occurs Until The Innermost Layer Of The Filter , Not Only On The Surface. Thus The Loss Of Head ( P ) Becomes Small And Leaching Time Also Becomes Shorter .
Easily Washed ( Back Wash ) .
Anthracite Filter Media Including Lightweight , Making It Easy To Wash . Grain Surface Is Smooth , Easily Removed And The Resulting Turbidity Is High Washing Efficiency ( Volume Of Water To Back Wash Fewer And Shorter Time Required ) .
High Resistance Tehadap Chemicals .
Anthracite Has A Higher Carbon Content And Few Impurities Causing Anthracite Insoluble In Acid Or Alkaline Solution ( Alkaline ) . Therefore Very Suitable For Use As A Filter Media . Anthracite Is Widely Used For Chemical Industry Such As For Filtering Salt , Soda , Ammonia , Etc. .
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% |
Tersedia Ukuran
- 8X30
- 6X12
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