- Table K-1 to Subpart K of Part 98—Electric Arc Furnace (EAF) CH4 Emission Factors

Alloy product produced in EAF CH4 emission factor
(kg CH4 per metric ton product)
EAF Operation Batch-charging Sprinkle-charging aSprinkle-charging and
>750 °C b
Silicon metal1.51.20.7 Ferrosilicon 90%1.41.10.6 Ferrosilicon 75%1.31.00.5 Ferrosilicon 65%1.31.00.5

a Sprinkle-charging is charging intermittently every minute.

b Temperature measured in off-gas channel downstream of the furnace hood.