Sample couple | Fe-None | Cu-None | Fe-Cu | |||
Temperature, ˚C | 1000 | 900 | 990 | |||
Time, Hr. | 14 | 7 | 6.5 | |||
Additive catalyst | None | Fe | None | Cu | Fe | Cu |
Carbon content of sponge iron. % | 0.35 0.32 | 0.59 0.52 | 0.35 | 0.41 | 0.51 | 0.34 |