Raw Materials of SiMn Production

1. Quality of Raw Materials

1) Mn ore（mixed）Mn≥35%

Size:10～80㎜；0~10㎜,ore powder＜8%

2) Coke: fixed carbon≥82%; ash＜8%

Size: 10～20㎜

3) silica SiO₂＞97%;size: 20～40㎜

2. Raw material consumption

Mixed Mn ore (Mn≥32%) : 2550㎏/t

Coke: 600～650㎏/t

Dolomite 12-14㎏/t（MgO＋GaO≥50%）

Electrode paste 30～40㎏/t

3. Functioning standards

Power consumption: 4100 Kw·h/t（average）

Product Qualified rate ＞99.5%

Mn recovery rate：75%～80%

Si recovery rate：40%～50%

Cos φ：～0.75