特等品: |
TFe≥94% MFe≥90% η>96% SiO2<2% |
SiO2:2~3.5% S<0.03% P<0.03% C<0.04% |
一级品: |
TFe:92~94% MFe:86~90% η:94~96% |
SiO2:2~3.5% S<0.03% P<0.03% C<0.04% |
二级品: |
TFe:90~92% MFe:83~86% η:92~94% |
SiO2:3.5~5% S<0.05% P<0.05% C<0.07% |
三级品: |
TFe:88~90% MFe:80~83% η:90~92% |
SiO2:5~6.5% S<0.07% P<0.07% C<0.1% |
合格品: |
TFe:86~88% MFe:76~80% η:89~90% |
SiO2:6.5~8% S<0.1% P<0.1% C<0.3% |