Continuous Charging EAF Furnace

Consteel Continuous Charging Electric Arc Furnace

        CHNZBTECH provides advanced Consteel Continuous Charging Electric Arc Furnace (EAF) solutions designed for high-efficiency, energy-saving, and environmentally friendly steelmaking. The system adopts continuous scrap charging and scrap preheating technology to improve thermal efficiency, reduce operating costs, and enhance molten steel quality.

Advanced Smelting Technology

        The Consteel process continuously feeds scrap into the furnace through a conveyor system integrated with a scrap preheating tunnel. Furnace exhaust gas flows counter-current to the metallic charge, enabling efficient heat recovery before charging into the EAF.

        During operation, the furnace maintains a continuous hot heel to accelerate startup of the next heat and stabilize the molten bath temperature within the proper operating range. Stable bath conditions ensure uniform steel composition and efficient refining performance.

        The furnace adopts advanced foamy slag smelting technology. Carbon injection and oxygen lancing generate stable foamy slag, which improves arc stability, increases heat transfer efficiency, reduces heat loss, and protects molten steel from harmful gas absorption.

        Compared with conventional EAF steelmaking, the Consteel process significantly reduces FeO content in slag, improves metallic yield, and enhances energy utilization efficiency.

Improved Steel Quality

        The continuous preheating process effectively burns hydrocarbons contained in scrap before charging into the furnace, helping reduce hydrogen and nitrogen sources during steelmaking.

        Combined with stable foamy slag refining and strong molten bath stirring, the process improves inclusion flotation and promotes efficient dephosphorization and desulfurization performance, resulting in cleaner molten steel and improved final product quality.

Key Advantages

       •Continuous scrap charging for stable furnace operation

       •Scrap preheating temperature up to 300–350°C using furnace exhaust gas

       •Reduced electrical energy consumption by 40–60 kWh/t

       •Reduced electrode consumption by approximately 0.35 kg/t

       •Reduced refractory consumption by approximately 1.2 kg/t

       •Reduced tap-to-tap time by approximately 5–6 minutes

       •Lower CO, VOC, and NOx emissions

       •Reduced electrical disturbance to the power network

       •Improved scrap yield and molten steel quality

       •Automated charge tracking and process optimization

Flexible Raw Material Adaptability

        The Consteel EAF is suitable for a wide range of metallic charge materials, including:

       •Scrap Steel

       •Pig Iron

       •DRI (Direct Reduced Iron)

       •HBI (Hot Briquetted Iron)

       •Hot Metal

       •Corex Sponge Iron

        The system can operate with flexible hot metal charging ratios according to different steelmaking requirements.

CHNZBTECH Advantages

       •Advanced continuous charging and scrap preheating technology

       •Optimized energy efficiency with reduced operating costs

       •Stable furnace operation with intelligent automation control

       •Flexible furnace design according to plant requirements

       •Reliable environmental protection and exhaust gas treatment systems

       •Complete turnkey solutions including engineering, installation, commissioning, and after-sales technical support.