| Parameter
| Data source
|
|---|
| CO2 Emissions from Prebake Cells (CWPB and SWPB)
|
| MP: metal production (metric tons Al) | Individual facility records.
|
| NAC: net annual prebaked anode consumption per metric ton Al (metric tons C/metric tons Al) | Individual facility records.
|
| Sa: sulfur content in baked anode (percent weight) | 2.0.
|
| Asha: ash content in baked anode (percent weight) | 0.4.
|
| CO2 Emissions From Pitch Volatiles Combustion (CWPB and SWPB)
|
| MP: metal production (metric tons Al) | Individual facility records.
|
| PC: annual paste consumption (metric ton/metric ton Al) | Individual facility records.
|
| CSM: annual emissions of cyclohexane soluble matter (kg/metric ton Al) | HSS: 4.0.
VSS: 0.5.
|
| BC: binder content of paste (percent weight) | Dry Paste: 24.
Wet Paste: 27.
|
| Sp: sulfur content of pitch (percent weight) | 0.6.
|
| Ashp: ash content of pitch (percent weight) | 0.2.
|
| Hp: hydrogen content of pitch (percent weight) | 3.3.
|
| Sc: sulfur content in calcined coke (percent weight) | 1.9.
|
| Ashc: ash content in calcined coke (percent weight) | 0.2.
|
| CD: carbon in skimmed dust from Søderberg cells (metric ton C/metric ton Al) | 0.01.
|
| CO2 Emissions from Pitch Volatiles Combustion (VSS and HSS)
|
| GA: initial weight of green anodes (metric tons) | Individual facility records.
|
| Hw: annual hydrogen content in green anodes (metric tons) | 0.005 × GA.
|
| BA: annual baked anode production (metric tons) | Individual facility records.
|
| WT: annual waste tar collected (metric tons) | (a) 0.005 × GA.
|
| (a) Riedhammer furnaces | (b) insignificant.
|
| (b) all other furnaces
| |
| CO2 Emissions From Bake Furnace Packing Materials (CWPB and SWPB)
|
| PCC: annual packing coke consumption (metric tons/metric ton baked anode) | 0.015.
|
| BA: annual baked anode production (metric tons) | Individual facility records.
|
| Spc: sulfur content in packing coke (percent weight) | 2.
|
| Ashpc: ash content in packing coke (percent weight) | 2.5. |