Application of Ferroalloy Submerged Arc Furnace

 

Ferroalloy submerged arc furnace are industrial equipment used to produce ferroalloys.

These melting furnaces are typically used for high-temperature smelting of various metal ores and raw materials, such as ferrosilicon and ferromanganese.

Ferroalloy SAF utilize electric arc heating to achieve the desired melting temperature, and their design and operation are tailored to the specific ferroalloy type. 

The furnace's structure and operating parameters, such as electrode type, supply voltage, current, and raw material ratio, affect ferroalloy yield, quality, and energy consumption.

Main Applications of Ferroalloy Submerged Arc Furnace

1. Ferrosilicon (FeSi/FeSi75-75/High Carbon Ferrosilicon, etc.) Production

• Applications: 

Widely used for deoxidation, alloying, and tempering in steelmaking. Ferrosilicon improves steel's strength and heat resistance.

• Key Process Features:

Raw materials typically include high-grade ore, coke/carbon feedstock, and coal.

High-temperature smelting in an electric arc furnace allows for controlled carbon and silicon content, as well as iron losses.

Energy consumption is relatively high, requiring an optimized fuel-to-charge ratio.

2. Ferromanganese (FeMn) Production

• Application: 

Used to improve steel's wear resistance and fatigue resistance, and improve deoxidation and deoxidation properties.

• Key Process Points:

Through multi-stage melting and reduction, the final content of elements such as manganese, carbon, and silicon is controlled.

Ore, ore powder, coke, and other raw materials are often used to optimize the charge ratio to stabilize production and quality.

3. Precursors for Aluminum-Magnesium-Silicon and Other Ferroalloys

• Application: 

Some submerged arc furnaces are used to produce masterbatches of aluminum-magnesium-silicon and other alloys, which serve as intermediates in steelmaking.

• Key Process Points:

The influx of oxides, carbon, and alloying elements requires strict control to ensure the stability of subsequent smelting processes.

4. Direct Reduction & Metallurgical Auxiliary Products

Application: 

Some systems are used for the direct reduction of iron ore and iron powder, or as auxiliary furnaces for the production of other ferroalloys.

Key Process Points:

Specialized furnace structures and refractory materials are required to withstand high temperatures and corrosive environments. Controlling the reducing atmosphere, temperature profile, and raw material particle size significantly impacts product quality.

5. Recycling & Reuse

• Applications: 

In the recycling process of steel mills, ferroalloy submerged arc furnace is used to remelt or reprocess iron-containing scrap and ferroalloy slag to recover the iron, carbon, and alloying elements.

• Key Process Points:

Scrap can introduce impurities, requiring pre-treatment and screening to prevent contamination of the final product.

Energy management and slag treatment are key steps.

Factors Influencing SAF Application Selection

Raw Material Composition & Particle Size: The silicon, manganese, carbon, and aluminum content of the ore directly determines the charge ratio and process temperature.

Target Alloy Composition: Different ferroalloys have different requirements for temperature, reducibility, and furnace pressure.

Energy Cost & Efficiency: Electrode material, furnace structure, cooling system, and charge utilization affect overall energy consumption.

Slag & Pollution Control: Emissions, ash separation, and recycling are significant components of long-term operating costs. Safety and Automation: Automatic charging, current/voltage control, furnace temperature monitoring, and protective measures are crucial for stability.

If you have any questions or inquiries regarding ferroalloy submerged arc furnace and silicon-manganese submerged arc furnace, and other smeting furnaces, please feel free to contact us.

E-mail: alice@srfurnace.com  / Tel: +86 15686041999 (Alice)

E-mail: anna@srfurnace.com  / Whatsapp: +86 159 2955 5868 (Anna)

Website: www.srfurnace.com / www.srmeltingfurnace.com / 

Xi'an Sanrui Electric Furnace