1. Ferro-silicon smelting Sometimes the furnace is short of carbon for a long time, and a large amount of excess silica dissolves to form viscous slag, which is not easy to remove.
2. Due to the high material surface and other reasons, the electrode inserted into the charge depth becomes shallow, the furnace temperature is low, the slag is not easy to exclude, especially the small capacity of the electric furnace is more likely to produce this phenomenon, so that the furnace memory slag excess.
3. Although the smelting of ferrosilicon slag less, but out of iron should try to bring slag to the outside, so that the electrode deep insertion. If you do not pay attention to the slag, over time, will also cause excessive slag in the furnace.
4. Poor quality of raw materials, such as high ash content in coke or silica surface clay, will also increase the amount of slag.
The danger of excessive slag in the furnace:
1. the bottom of the furnace rises, the click is not easy to deep insertion, dry over narrowing, material surface permeability becomes bad, furnace conditions deteriorate.
2. low temperature at the bottom of the furnace, the iron outlet is not easy to open, the furnace eye is not smooth, the flow rate of iron is slow, the amount of iron is less.
