Advanced Electric Arc Furnace Solutions

Innovations in Electric Arc Furnace Technology

The electric arc furnace (EAF) plays a pivotal role in modern steelmaking, addressing the industry's demand for sustainable practices. Producers face challenging market conditions that require them to enhance plant efficiency to remain competitive. Achieving an optimal balance in electric arc furnace technology involves fine-tuning charge materials, process control, cycle times, logistics, and productivity, necessitating both extensive experience and precise analysis of steelmaking requirements. Primetals Technologies offers electric arc furnaces designed to meet the specific requirements of operators. These plants combine high capacity with maximum availability, processing a variety of charging materials and producing a wide range of steel grades without lengthy adaptation times that hinder production. Additionally, costs are reduced in terms of both initial investments and throughout the plant's operational lifetime, while the environmental impact of electric steelmaking is minimized.

High Productivity with the EAF Ultimate

The EAF Ultimate electric arc furnace encapsulates over 40 years of experience and innovation from Primetals Technologies in the field of electric arc furnaces. This new generation is designed to be the ultimate in every aspect. It features state-of-the-art electric steelmaking technology and design elements that deliver maximum performance in both quantity and quality. The EAF Ultimate offers exceptionally high energy input rates of up to 1,500 kVA/t of liquid, incorporates innovative RCB technology to enhance performance, and features an enlarged furnace for simultaneous single-bucket charging. This combination yields extremely short tap-to-tap times, significantly improving productivity. For instance, at a capacity of 120 tons, the EAF Ultimate achieves the same productivity as a 180-ton standard EAF, representing a 50% increase in productivity at the same tapping weight.

High Flexibility with the EAF Ultimate Move

The EAF Ultimate Move from Primetals Technologies combines the proven strengths of the EAF Ultimate and EAF Quantum into a cost-effective solution for maximum flexibility, particularly suited for greenfield installations. Backed by more than 40 years of electric arc furnace expertise, it enables high productivity with shorter tap to tap times, a compact layout footprint, and reduced CAPEX.

A moveable support frame with a shell exchange toward the teeming bay simplifies maintenance and lowers auxiliary equipment costs. Advanced features such as single bucket operation, single point roof swiveling, and Furnace Advanced Slag Free Tapping (FAST) further boost efficiency and operational flexibility.

The EAF Ultimate Move can process all types of metallic charge materials in any combination, supporting producers in adapting to diverse raw material strategies throughout the industry’s transition phase.

High Efficiency with the EAF Quantum

The EAF Quantum electric arc furnace is based on an optimized preheating and melting concept, delivering minimal conversion costs, maximizing output, and ensuring environmental compliance. With 100% scrap preheating, efficient energy recovery results in energy consumption of less than 280 kWh/t. This efficiency is achieved through a trapezoidal shaft design combined with a redesigned retaining system, which enables optimal scrap allocation and improved off-gas routing for efficient heat transfer. Melting scrap in significant liquid heels supports pure flat-bath operation with minimal flicker and enhances preheating efficiency. Combined with the Furnace Advanced Slag-free Tapping system (FAST—siphon design), this innovative furnace concept enables charging, tapping, and refilling the tap hole under power-on conditions.

High Quality with the EAF Stainless

The increasing global demand for stainless steel can be met by installing melting units equipped with the latest technologies and design features. The EAF Stainless electric arc furnace combines all the benefits of the EAF Ultimate concept, specifically tailored to meet the needs of stainless steel production. This furnace type is characterized by maximized power input and high productivity. Primetals Technologies stands as the world’s leading supplier of electric arc furnaces for stainless steel production.

Tried and Tested DC and AC Electric Arc Furnaces DC and AC Electric Arc Furnaces

With decades of experience in designing electric arc furnaces, Primetals Technologies offers steel producers a wide range of powerful options for high-performance electric steelmaking. This includes electric arc furnaces of various sizes and types, twin-shell furnaces, and shaft furnaces, along with all related processes, automation systems, and environmental control systems. The AC and DC electric arc furnaces from Primetals Technologies serve as ideal melting units for producing all types of steel, ranging from standard carbon grades to high-alloyed and stainless steel grades.

Overall, furnace performance can be further enhanced with the latest oxygen and carbon injection technologies. These furnaces offer maximum flexibility regarding input materials, with solutions available for hot or cold DRI feeding, hot metal input, or pure scrap charging. Twin-shell electric arc furnaces offer an attractive solution for enhancing plant productivity, particularly when infrastructural limitations preclude an increase in tapping weight. Power-off times can be reduced to less than three minutes.

Benefits of Electric Arc Furnaces from Primetals Technologies

High reliability: assured fulfillment of contractual agreements
Leading-edge innovation: EAF Ultimate delivers maximum productivity, flexible process control, and high availability; EAF Quantum sets the benchmark for efficiency and environmentally friendly electric steelmaking.
Short start-up periods: user-friendly systems supported by extensive process expertise
High quality and minimized downtime risk: achieved through a high level of standardization in system components
Short amortization time: low consumption levels, high availability, and dependable productivity ensure rapid return on investment

EAF Quantum at Tyasa

EAF Quantum scrap charging ramp

EAF Ultimate

EAF Ultimate charging

DC-EAF at Gerdau

Steelmaking

EAF Quantum at Huaigang Special Steel

For Huaigang Special Steel at a site in Huai'an, Jiangsu province, China, Primetals Technologies supplied a Quantum electric arc furnace with a tapping weight of 80 metric tons to produce high-end special steels, such as spring and bearing steel.

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Steelmaking

EAF Quantum at Tyasa

For Tyasa's new minimill meltshop in Ixtaczoquitlan, Mexico, Primetals Technologies supplied a Quantum electric arc furnace with a tapping weight of 100 metric tons, as well as secondary steelmaking facilities.

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Digitalization

Automation & Digital Solutions

Automation

EAF Optimizer

Achieve stable steel quality and reduce costs with the EAF Optimizer, featuring advanced metallurgical models.

Steelmaking Process Assistant

Boost steelmaking efficiency with the digital Steelmaking Process Assistant. Reduce errors, standardize processes, and enhance product quality.

Melt Expert

Optimize Electric Arc Furnaces (EAF) and Ladle Furnace (LF) operations and reduce energy costs, improve productivity, and ensure high-quality steel production.

Automated EAF Charging with EAF ChargeOpt

Maximize safety and efficiency in EAF operations with automated scrap charging and precise crane movements.

EAF Tapping Controller

Ensure safe and efficient electric arc furnace (EAF) tapping with automated control systems, reducing tap-to-tap time and improving ladle lifespan.

EAF Controller

Enhance EAF operations with digital controllers, ensuring real-time data access and optimized resource utilization.

Automatic Tap Hole Filling for Electric Arc Furnaces

Boost safety and efficiency with automated tap hole sand filling. Reduce process times, improve operator safety, and cut costs for electric arc furnaces.

EAF Door Assistant

Improve slag flow control and safety with the EAF Door Assistant, automating slag door operations and cleaning.

LiquiRob: Advanced Robotic Solution

LiquiRob ensures operator safety and boosts steel production efficiency. Automate tasks like sampling, inspections, and measurements with precision.

Monitor

Bag Break Monitor

Enhance plant efficiency with the Bag Break Monitor. Detect filter bag damage early, reduce emissions, and optimize maintenance processes for increased reliability and regulatory compliance.

Bag Cleaning Monitor

Enhance bag filter performance with 24/7 acoustic monitoring. Reduce downtime, save resources, and optimize maintenance in steel plants.

Freeboard Monitor

Enhance steel pouring accuracy with the Freeboard Monitor. Prevent spillovers, improve safety, and optimize filling levels with real-time measurement and automation.

Fume Monitor

Optimize dedusting efficiency with the Fume Monitor. Achieve real-time emissions control, reduce energy costs, and ensure environmental compliance in furnace operations.

SlagMon: Optical Steel Slag detection system

Improve steel quality with SlagMon’s optical slag detection system. Achieve precise tapping, reduce slag transfer, and enhance operational efficiency.

LOMAS: Gas Analyzing System

Achieve precise gas analysis in hot, dust-laden environments with LOMAS, offering enhanced process control, safety, and efficiency for steel production.

Ladle Position Monitor

Enhance steel production with automated ladle identification. Improve equipment utilization, reduce downtime, and ensure safety with advanced 3D and RFID technologies.

Digitalization

Central Operation Cockpit

Streamline steel plant operations with real-time monitoring, automated alerts, and advanced tools for safety, efficiency, and consistent quality.

Through-Process Quality Control

Ensure top-quality steel production with TPQC. Leverage real-time data, predictive analytics, and defect prevention for enhanced efficiency and precision.

Production Management Liquid & Solid

Optimize steel production with Production Management Liquid and Solid, offering cross-plant planning, quality control, and logistics integration for enhanced efficiency.

ALEX: Asset Life Expert

Monitor condition, detect failures early, and optimize maintenance with Asset Life Expert (ALEX) for steel plants.

MAT: Maintenance Asset Technology

Leverage advanced Maintenance Asset Technology (MAT) to optimize equipment performance, reduce downtime, and improve operational efficiency.

Energy Management System

The energy management system enhances operational efficiency through predictive algorithms to optimize energy use at ironmaking plants, steel plants and rolling mills.

The Virtual Plant

Train operators and test automation systems with a digital twin. Enhance skills, ensure system reliability, and enable fast start-ups in steel production.

Metals Business Intelligence

Empower steel production with Metals Business Intelligence, offering data-driven insights, customizable dashboards, and streamlined decision-making tools.

Ladle Tracker

Boost efficiency with the Ladle Tracker. Track ladle location, manage thermal conditions, and optimize maintenance in real time for better steel production.

Scrap

Scrap Mover

Boost steel plant efficiency with an automated, eco-friendly scrap transfer system that enhances safety, reduces CO₂, and ensures reliable operations.

Scrap Delivery Supervisor

Optimize scrap yard operations with precise tracking, real-time monitoring, and efficient logistics management for the steel industry.

Scrap Profile Monitor

Automate scrap yard operations with precise 3D volume measurements. Boost efficiency, reduce downtime, and streamline warehouse management effortlessly.

Scrap Composition Monitor

Enhance steel production safety and quality with the Scrap Composition Monitor. Automatically identify hazardous materials, ensure compliance, and boost efficiency.

Scrap Type Monitor

Achieve consistent steel quality with automated scrap identification. Reduce mismatches, enhance logistics, and optimize material handling efficiently.

Scrap Yard Supervisor

Automate scrap yard operations with real-time tracking and optimized scrap mix calculations. Enhance safety, reduce costs, and improve material handling efficiency.

Automatic Scrap Yard Solutions

Improve scrap management efficiency, traceability, and safety with an advanced modular Automatic Scrap Yard solution.

Scrap Loading Controller & Tracker

Automate scrap loading with precise recipes, enhanced safety, and optimized crane operations to streamline steel production and reduce downtime.

Scrap Bucket & Chute Position Monitor

Ensure accurate scrap handling, reduce spillage, and enhance operational efficiency with scrap bucket chute monitoring solutions for steel plants.

Electrification

Active Power Feeder

Enhance electric arc furnace operations with the Active Power Feeder. Reduce flicker, improve arc stability, lower costs, and increase productivity seamlessly.

Medium-Voltage Power Supply

Medium-Voltage Power Supply, Substations, and Transformers

Medium-Voltage Drives and Motors

The customizable dimensions of medium-voltage drives and motors enhance flexibility and adaptability. Additionally, their design minimizes distortion of the supply grid. Combined with a robust and durable construction, these features make them ideal for the various demands of steel plants.

Digital Power Substation

Optimize energy use and reliability with the Digital Power Substation. Leverage real-time analytics, predictive maintenance, and scalable architecture for steel and aluminum plants.

Static Synchronous Compensator (STATCOM)

The Static Synchronous Compensator (STATCOM) is a power quality and harmonics management system that enhances steel plant energy performance, reduces operational expenses, and ensures compliance with IEC and utility standards.