Integrated DRI and EAF Steelmaking System

Product Specifications

Technical details and manufacturing context for Integrated Direct Reduction Iron and Electric Arc Furnace Steelmaking System

Definition

The Integrated Direct Reduction Iron and Electric Arc Furnace Steelmaking System is a complete industrial installation for producing steel from iron ore without relying on traditional blast furnaces or coke ovens. It combines two core processes: the direct reduction of iron ore into direct reduced iron (DRI) using reducing gases, and the subsequent melting and refining of that DRI in an electric arc furnace (EAF) to yield liquid steel. This route offers operational flexibility and a lower environmental footprint compared to conventional integrated steelmaking, particularly when powered by natural gas or renewable energy sources. The system is designed with a modular architecture, allowing for scalable production capacities and the potential to integrate with renewable energy inputs. It is suitable for regions with access to abundant natural gas or renewable electricity. The system includes material handling for iron ore pellets, scrap steel, and refractory materials, as well as gas supply and treatment systems. Key parameters include a DRI production rate of 50–200 tonnes per hour, an EAF capacity of 100–300 tonnes per heat, and a specific natural gas consumption of 9–12 GJ per tonne of DRI. The system footprint ranges from 5,000 to 15,000 square meters, with a total system weight of 5,000 to 15,000 tonnes. Operational availability is typically 92–96%, and CO2 emissions are 0.6–1.0 kg per tonne of steel. The system operates at a pressure of 1.0–1.6 MPa and a reduction zone temperature of 850–1050°C. Electrical power for the EAF is 80–250 MVA (IEC 60076). Metallization degree is 92–96%, and carbon content in DRI is 1.5–4.0%. Water consumption is 0.5–1.5 m³ per tonne of steel, and noise levels are 85–95 dB(A) at 1 meter (ISO 11201). All values are reference ranges and must be confirmed for the specific model and application with the legal manufacturer or supplier.

Working Principle

Iron ore pellets are fed into a shaft furnace where they are reduced by a stream of hot reducing gases, typically derived from natural gas or hydrogen, to produce direct reduced iron (DRI). The DRI, along with scrap steel and flux materials, is then charged into an electric arc furnace. High-power electric arcs melt the charge, and refining reactions remove impurities to produce liquid steel of the desired composition. The system is designed for continuous or batch operation, with the DRI production rate and EAF capacity matched to achieve balanced throughput. The reducing gas composition and temperature are controlled to achieve a metallization degree of 92–96% and a carbon content in DRI of 1.5–4.0%, which influence steel quality and energy consumption. Off-gas from the EAF is treated for dust removal and heat recovery, and water is used for cooling and gas cleaning in a closed-loop system to minimize makeup requirements.

Common Materials

Iron ore pellets, Natural gas/Hydrogen, Scrap steel, Refractory materials

Technical Parameters

Parameter	Typical range	Notes & selection driver
DRI Production RateRequired	50–200 tonnes/hour	Direct reduced iron production capacity
EAF CapacityRequired	100–300 tonnes/heat	Electric arc furnace melt capacity per heat
Natural Gas ConsumptionRequired	9–12 GJ/tonne DRI	Specific natural gas consumption for DRI production
System FootprintRequired	5000–15000 square meters	Total area required for complete installation
CO2 Emissions	0.6–1.0 kg CO2/tonne steel	Specific carbon dioxide emissions
System AvailabilityRequired	92–96 %	Annual operational availability percentage
Operating Temperature	850–1050 °C	Reduction zone temperature; affects metallization and energy use.
Electrical Power	80–250 MVA	Transformer rating for EAF; higher for faster melting.IEC 60076
Metallization Degree	92–96 %	Higher reduces EAF energy consumption and slag volume.
Carbon Content in DRI	1.5–4.0 %	Adjustable via process gas composition; affects steel quality.
Water Consumption	0.5–1.5 m³/t steel	For cooling and gas cleaning; closed-loop reduces makeup.
Noise Level	85–95 dB(A)	At 1 m from equipment; enclosures may reduce to 85.ISO 11201
System Weight	5000–15000 t	Includes all equipment and structural steel; affects foundation.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Direct Reduction Shaft Furnace
Reduces iron ore to DRI using reducing gases

Material: Refractory-lined steel shell
Electric Arc Furnace
Melts DRI and scrap to produce liquid steel

Material: Water-cooled steel panels with refractory lining
Gas Reforming Unit
Produces reducing gas from natural gas

Material: High-temperature alloy steel
Material Handling System
Transports iron ore, DRI, and scrap between processes

Material: Carbon steel with wear-resistant liners
Off-gas Cleaning System
Cleans and recovers process gases

Material: Stainless steel ducting and scrubbers
Process Control System
Coordinates and optimizes all system operations

Material: Industrial-grade electronics and instrumentation

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Integrated Direct Reduction Iron and Electric Arc Furnace Steelmaking System.

Manufacturers of Integrated Direct Reduction Iron and Electric Arc Furnace Steelmaking System

Manufacturer profiles associated with Integrated Direct Reduction Iron and Electric Arc Furnace Steelmaking System.

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Frequently Asked Questions

What are the main components of this steelmaking system?

The system includes a shaft furnace for direct reduction of iron ore pellets, an electric arc furnace for melting and refining, material handling systems for iron ore pellets, scrap steel, and refractory materials, gas supply and treatment systems, and auxiliary equipment such as transformers, cooling systems, and gas cleaning units.

How does this system compare to traditional blast furnace steelmaking?

This system eliminates the need for coke ovens and blast furnaces, reducing environmental impact and increasing flexibility. It can operate on natural gas or hydrogen, and is well-suited for regions with abundant natural gas or renewable energy. The modular design allows for scalable production and easier integration with renewable energy sources.

What are the typical performance parameters?

Typical reference ranges include a DRI production rate of 50–200 tonnes per hour, EAF capacity of 100–300 tonnes per heat, natural gas consumption of 9–12 GJ per tonne DRI, system footprint of 5,000–15,000 square meters, CO2 emissions of 0.6–1.0 kg per tonne steel, and system availability of 92–96%. These values must be confirmed for the specific model and application.

What standards and verification are relevant?

The system has an operating pressure of 1.0–1.6 MPa, IEC 60076 for electrical power (80–250 MVA), and ISO 11201 for noise levels (85–95 dB(A)). These standards are procurement references and do not imply certification. Always verify model-specific values and compliance with the legal manufacturer or supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	DRI reduction gas: 3-5 bar, EAF: atmospheric with controlled overpressure
flow rate:	Reduction gas: 50-200 Nm³/ton DRI, Cooling water: site-specific
temperature:	DRI shaft: 800-1100°C, EAF melting: 1600-1800°C
slurry concentration:	Not applicable (dry iron ore pellets typical)

Integrated Direct Reduction Iron and Electric Arc Furnace Steelmaking System

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards