What Is The Electric Arc Furnace Used For Smelting

The Role of Electric Arc Furnace

EAF is widely used as an industrial electric furnaces for the following smelting:
1. Steel smelting

• Scrap steel recycling: Electric arc furnaces is the core equipment of short-process steelmaking. It uses scrap steel as the main raw material (accounting for 80%~100%), melts scrap steel by electric arc heating, and then adjusts the composition through refining to produce carbon steel, alloy steel, etc. Compared with the long process of blast furnace converter, it has lower energy consumption and carbon emissions.

• Special steel production: suitable for smelting high-quality alloy steels such as stainless steel, tool steel, bearing steel, etc., because of its strong temperature controllability, it can accurately adjust the alloy composition.

2. Ferroalloy smelting

• EAF melting furnace is used to produce ferroalloys (steelmaking additives) such as ferrosilicon, ferromanganese, and ferrochrome. For example, 75% ferrosilicon needs to be reduced to silica and coke in the electric furnaces.

3. Nonferrous metal smelting

• Copper & nickel: processing concentrates or recycling waste, such as smelting of copper anode plates.

• Zinc & lead: used for smelting or refining in a few processes.

• Precious metals: such as smelting of titanium and molybdenum (often with a vacuum environment to avoid oxidation).

4. Other special materials

• Refractory materials: EAF furnaces can melt magnesium oxide, corundum, etc.

• Industrial silicon: intermediate products for smelting solar-grade or electronic-grade silicon.

Advantages & Limitations

• Advantages: Industrial electric furnaces are highly flexible (intermittent production), environmentally friendly (reduced coke use), and suitable for small batches of high value-added products.
• Limitations: Melting furnace rely on electricity costs, and raw materials need to be refined when there are many impurities (such as LF furnaces).