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Physical Properties of C & S Filter Coal |
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| Effective Size: |
To Client's Requirement |
| Uniformity Coefficient: |
1.30 standard; available down to 1.20 at additional cost, and up to 1.40 at reduced cost . |
| Acid Solubility: |
1% maximum to AWWA B100-89 |
| Alkali Solubility |
1.5% maximum in 1% NaOH @ 88°C |
| Hardness: |
1. Hardgrove Grindability Index 50 maximum to AS1038 Part 20
2. Friability =20% max for 15 minutes 25% max for 20 minutes
As per Watson Hawksley (Asia) Test Method
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| Durability: |
Attrition loss of less than 0.35% per year recorded in full scale water treatment plant |
| Specific Gravity: |
1.45 to AS1289 C5.1 |
| Bulk Density: |
660 to 720 kg/m3 AS3899 |
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An independent NATA registered laboratory is available to test Effective Size, Uniformity Coefficient, Specffic Gravity, Acid Solubility, Alkali Solubility and Hardgrove Grindability Index, and to perform any other tests required.
Backwash Rates:
C & S Filter Coal
Bed Expansion vs Backwash Rates at 20'C
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Correction for water Temperature
Expansion at T'C
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= 1.58 e -0.023T
Expansion at 20'C
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