Backfill
Anode Backfill | Petroleum Coke Backfill | Metallurgical Coke Backfill |
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Anode Backfill
Specification of Sacrificial Anode and Buried Permanent Reference Cell Backfill
Anode Type | Composition of Backfill [%(m/m)] | Application |
Gypsum (CaSO4.2H2O) | Anhydrous Sodium Sulphate | Anhydrous Sodium Magnesium | Bentonite |
Mg anode | 50
25
75
15
15 | -
-
5
15
- | -
25
-
20
35 | 50
50
20
50
50 | ≤20Ω.m
≤20Ω.m
＞20Ω.m
＞20Ω.m
＞20Ω.m |
Zn anode | 50
75 | 5
5 | -
- | 45
20 | -
- |
Specifications of Petroleum Coke Backfill
Fixed Carbon | 99% |
Ash | 0.5% Max |
Moisture | 0.2% Max |
Volatiles | 0.5% Max |
Bulk Density | 1100kg/CBM |
Resistivity | 0.1ohm.cm Max |
Size | 0~1mm |
Specifications of Metallurgical Coke Backfill
Fixed carbon | 90% |
Ash | 8% |
Moisture | 10% |
Volatiles | 1% |
Sulphur | 1.2% |
Bulk Density: | 500-600kg/CBM |
Resistivity: | 35-55ohm.cm |
