Options for scrap heating in the converter
| Option | Sequence of operations |
|---|---|
| One-stage | 1. scrap charging + heating + casting of hot iron;
2. scrap charging + heating + scrap charging + hot metal charging. |
| Two-stage | 1.scrap charging + heating + hot metal charging;
2. scrap charging + heating + scrap charging + heating +scrap charging + hot metal charging. |
| Three-stage, etc. | Scrap charging + heating + scrap charging + heating + scrap charging + heating +scrap charging +hot metal charging. |
Types of heating of scrap in the converter
| Type of Heating | Duration of heating (min) | Application |
|---|---|---|
| Light | 3 – 4 | – To prevent explosions and claps
– With standard scrap loading |
| Traditional | 6 – 9 | – To prevent explosions and claps
– To increase share of scrap – With standard scrap loading |
| Extended | over 9 | – Additional increase of share of scrap
– To provide production during shortage of hot metal. |