OTHER FACTORS( RELATED TO FURNACE/POWER/SCRAP)
In addition to the above, factor which contributes to increased power consumption is.
The power requirement per tone of molten metal for different types of charge materials is as follows: (approx)
- Solid blocks : 500-550 Units (approx)
- Pig iron : 550-600
- C.I. scrap : 500-550
- C.I. Borings : 550-600
- Steel scrap : 500-550
- Steel Turnings : 550-600
Depends upon cleanness of material. High percentage of mud, etc increases power consumption.
For various combinations of charge materials intermediate figure are application. In super heating, generally 50 units per tone of molten metal per 1000C rise in temperature are observed. Also the melting/super heating power consumption is higher per ton with smaller furnaces.