• Electric Arc Furnace Suppliers

  • Electric Arc Furnace Technology

  • Electric arc furnace steel making

  • Electric Arc Melting Furnace

  • Electric Arc Furnace Technology

  • Electric Arc Melting Furnace

  • Electric Arc Furnace Suppliers

  • Steel making electric arc furnace

Electric Arc Furnace Steel Making

Electric Arc Furnace Introduction


Electric arc furnace steel making is a steelmaking method that uses the thermal effect of electric arc to heat the charge for melting.

Electric energy is input into the electric arc steelmaking furnace through graphite electrodes, and the arc generated between the electrode end and the charge is used as the heat source for steelmaking.

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Electric arc furnace Steel Making Introduction

Electric arc furnace Steel Making Introduction

Electric arc furnace steel making is a steelmaking method that uses the thermal effect of electric arc to heat the charge for melting. Electric energy is input into the electric arc steelmaking furnace through graphite electrodes, and the arc generated between the electrode end and the charge is used as the heat source for steelmaking.

Steel making electric arc furnace is used to melt scrap steel for steel production. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode. The heat generated by the arc melts the scrap. 

The electric arc furnace consists of three parts (lower furnace body, upper furnace body and furnace roof) and can be tilted hydraulically. The lower vessel, upper vessel and top interior are lined with refractory material. The outside and top of the vessel usually consist of a water-cooled structure.



Main Application of Electric Arc Furnace Steel Making

Used to smelt and produce alloy steel.

ordinary carbon steel

and stainless steel

Electric Arc Furnace Equipment Features

The electric arc furnace is a furnace cover that opens and the top is charged. According to the power matching, it is divided into normal power, high power and ultra-high power; according to the operation mode, it is divided into two types: forward operation and right operation; the tapping mode is divided into tapping channel tapping and eccentric bottom tapping.

Electric Arc Furnace Equipment Composition

Furnace body, short screen, tilting furnace mechanism, electrode lifting mechanism, furnace cover lifting and rotating mechanism, water cooling system, hydraulic system, high voltage system, electric furnace transformer, low voltage system automation control system, etc.

Sanrui EAF Steelmaking Technical Advantages

Low Power Consumption and Cost Reduction

The high current system of the electric arc melting furnace uses pure copper as the conductive medium, and the entire loop resistance is small. Taking full account of the skin effect when current passes through conductors, the cross arm adopts a box-shaped copper-steel composite plate structure, which can effectively reduce resistance and heat generation. Reasonable high-current system layout makes various current impedances smaller.

EAF Equipment Operation is More Stable and Smelting is Safer

The entire hydraulic drive is equipped with an accumulator, which stabilizes the pressure of the hydraulic system and makes the equipment run more stably. At the same time, in emergencies such as power outages, the equipment can continue to perform unfinished operations, which improves the safety of smelting.

Electrode Consumption Reduced

The anti-electrode breakage system can effectively reduce the chance of electrode breakage during the smelting process. In particular, avoiding electrode breakage during the scrap melting process is equivalent to saving an entire furnace of molten steel and reducing economic losses.

The Equipment is Simple to Operate and Easy to Use

Electrical automation control adopts human-machine interface, which simulates the form of real furnace body and is easy to operate. Batching, loading, smelting and tapping can all be operated on the computer.

High Arc Starting Efficiency

Using a new type of electrode adjustment system, the electric arc furnace electrode lifting control breaks the previous single signal return control technology and adopts multi-signal collection and PLC signal comparison technology to increase the electrode arc starting speed and avoid long-term effects on the electric arc melting furnace during the arc starting process. Upper level power grid system.

Diversification of Dust Removal Systems

The dust removal systems we are equipped with are diversified and can be equipped with different forms of dust removal equipment according to the environmental protection requirements of different countries.

Three-phase Steelmaking Electric Arc Furnace Parameters

TypeRated capacityMax capacityFurnace Shell Inner Diameter ( MM)Electrode Diameter (MM)Transformer Capacity (KVA)
(T)( T)
EAF-5T51032003002500-4300
EAF-10T101836003505500-8000
EAF-15T152438003508000-12500
EAF-20T203040004009000-12500
EAF-25T2535420040012500
EAF-30T3045440040012500-25000
EAF-40T4055460045016000-30000
EAF-45T4565480045016000-40000
EAF-60T6085540050025000-60000
EAF-80T80100610050030000-80000
EAF-100100120640055040000-80000

Scope of Electric Arc Furnace Supply

Furnace body: furnace shell, furnace door mechanism, tapping spout mechanism

Furnace roof: tubular water-cooled furnace roof, refractory center roof (this is a drawing produced by the seller, made by the buyer)

Furnace croof lifting and rotating mechanism: furnace cover lifting mechanism (cylinder, chain, gear, etc.), (Γ frame), rotating mechanism, rotating locking mechanism

Tilting mechanism: arc-shaped frame, base, tilting hydraulic cylinder

Electrode cross arm and lifting mechanism: electrode support arm, electrode clamping device, lifting mechanism

Short network: stainless steel bracket, compensator, water-cooled cable, stainless steel bracket, water-cooled conductive copper tube

Cooling water system: water inlet distributor, return water tank, pressure gauge, thermometer, valve

Hydraulic system: motor, pump, filter, tank, control valve, accumulator

High-voltage power supply system: isolation switch, voltage transformer, vacuum circuit breaker, current transformer, lightning arrester, etc.

Electric furnace transformer

Low voltage electrical system

Low-voltage power cabinet, PLC cabinet, main operating console, furnace front operating console, hydraulic operating box, control sensor, limit switch, etc.

Automation control system: Siemens PLC

Electric Arc Furnace Steelmaking Process

01

The basic process of electric arc furnace steel making includes slag removal, metal charging, power supply, melting, oxidation, reduction refining and tapping. Depending on the characteristics of the type of steel being smelted, there are different operating methods. The smelting process mainly consists of three phases: melting, oxidation, and reduction.

02

With the continuous development of technology, the electric arc furnace steel making process has also undergone great changes. During the melting period, auxiliary energy is used to accelerate melting, such as injection of oil-oxygen, natural gas-oxygen or pulverized coal-oxygen. The melting time of each furnace is shortened by 15 ~20min, power consumption can be reduced by 50~60kWh/t;

03

During the oxidation period, measures such as early dephosphorization, intensive oxygen use, powder spraying to create foam slag, and rapid temperature rise can reduce the amount of oxidative decarburization from 0.3% in traditional processes to 0.1% to 0.15%, thus shortening the oxidation period by 50%. above.

04

In the reduction period, diffusion deoxidation in the traditional process is mainly replaced by precipitation deoxidation, and diffusion deoxidation is supplemented. White slag or carbide slag needs to be produced. Each furnace smelting takes 3 to 4 hours, and the power consumption is as high as 600 to 700kWh/t. Not only can the expected refining effect be achieved, but the steel quality is guaranteed and the reduction time can be shortened by more than 60%.

05

While improving the quality of molten steel, the process improvement has also increased productivity by about 20%, reduced power consumption by 10% to 15%, and reduced electrode consumption by about 8%, achieving considerable economic benefits.

Sanrui Electric Arc Furnace Technology Optimization

After optimizing electric arc furnace technology, Sanrui has achieved the best balance between raw materials, scrap preheating, energy conservation and environmental protection, smelting process control, automation control, smelting cycle and production capacity. The electric arc furnace inputs electric energy into the electric arc steelmaking furnace through graphite electrodes, and uses the arc between the electrode end and the charge as the heat source for steelmaking.


The electric arc furnace uses electric energy as the heat source and can adjust the atmosphere in the furnace, which is extremely beneficial for melting steel types that contain more easily oxidized elements. Utilize high-temperature flue gas from electric furnaces to preheat raw materials through technology and equipment to achieve high efficiency, energy saving, environmental protection and high yield.


With the improvement of electric arc melting furnace equipment and smelting technology, and the development of the electric power industry, the cost of electric furnace steel makinh continues to decrease. Nowadays, electric furnaces are not only used to produce alloy steel, but also to produce ordinary carbon steel and iron ore concentrate pellets.

Services Provided by Sanrui

1. Sanrui as an well experience electric arc furnace suppliers can provide foundation layout and layout drawings

2. Sanrui will send engineers to your factory to install and debug the machine, providing trustworthy after-sales service.

3. Sanrui provides operation and maintenance personnel training, and the smelting equipment is easy to operate and maintain.

4. Competitive price and excellent quality

5. Low investment, high production efficiency and high rate of return

6. Smelting equipment has stable performance and safe production

7. Steelmaking electric arc furnace can be customized according to different needs

8. Production capacity can be adjusted according to customer requirements

9. Environmentally friendly, low energy consumption

Sanrui is an well experience electric arc furnace suppliers in design, manufacturing, installation, commissioning of steel making electric arc furnace process equipment. 

Sanrui provides engineering consulting, R&D, design, equipment supply, system integration and software preparation, construction, installation, commissioning, project management, technical services and training, production guidance, operation and maintenance, spare parts supply and other comprehensive engineering and technical services.

Send us your project details and our team of engineers will design a steel making electric arc furnace solution based on your needs.

Related Products

Customized metallurgical machinery and equipment range: Electric Arc Furnace, Submerged Arc Furnace, LF Refining Furnace, Vacuum Furnace, Induction Furnace, Dust Remove System, Water Treatment Equipment, etc. Providing the most advanced equipment integration services, metallurgical equipment can be customized according to different needs of customers, and production capacity can be adjusted according to customer requirements.

50 Ton Ultra-high Power Electric Arc Furnace

50 Ton Ultra-high Power Electric Arc Furnace

The 50-ton ultra-high power electric arc furnace (50TUPH EAF) adopts ultra-high power, high impedance technology, bottom tapping technology (ETB), furnace wall oxygen oil burner and furnace door carbon-oxygen gun technology.

30 Ton Electric Arc Furnace

30 Ton Electric Arc Furnace

30 Ton electric arc furnace is used for steelmaking short process smelting, using 100% scrap steel or scrap steel + molten iron (pig iron), or scrap steel + sponge iron (DRI) as raw materials for steelmaking.

30 Ton AC Electric Arc Furnace

30 Ton AC Electric Arc Furnace

The 30-ton AC electric arc furnace is used to melt scrap steel to produce steel. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode.

Ultra-high Power Electric Arc Furnace

Ultra-high Power Electric Arc Furnace

Ultra-high power electric arc furnace mainly changes the arc characteristics of high voltage and long arc to the arc characteristics of high current, low voltage and short arc

5 Ton Electric Arc Furnace

5 Ton Electric Arc Furnace

The 5 ton electric arc furnace for steel-making is a special purpose equipment that makes ordinary steel, quality carbon steel, alloy steel and non-corrosive steel with electric arc as heat source and scrap steel (iron) as raw material.

Electric Arc Furnace

Electric Arc Furnace

Electric arc furnaces are used to melt scrap steel for steel production. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode. The heat generated by the arc melts the scrap.

15 Ton Electric Arc Furnace

15 Ton Electric Arc Furnace

15-ton electric arc furnace is used for the short-process steelmaking process, using 100% scrap steel or scrap steel + molten iron (pig iron), or scrap steel + sponge iron (DRI) as raw materials for steelmaking.

DC Electric Arc Furnace

DC Electric Arc Furnace

DC electric arc furnace is an electric arc furnace supplying electric energy with DC power supply. There is only one electrode on the top of the DC arc furnace, which is the negative electrode, and the bottom electrode is the positive electrode.

Our Completed Projects

Sanrui metallurgy furnace equipment integration services are submerged arc furnaces and electric arc furnaces. Sanrui metallurgy furnaces are manufactured using cutting-edge technology to ensure an efficient, high-quality melting process.
These furnaces are capable of melting a variety of materials, including steel, iron and alloys, ferroalloys (such as ferrotungsten, high carbon ferromanganese, high carbon ferrosilicon, high carbon ferrochromium, ferronickel alloys) and industrial silicon, calcium carbide, corundum, yellow phosphorus, etc. with precise temperature control and minimal energy consumption.
By using Sanrui metallurgy furnace equipments, metallurgical companies can increase productivity and reduce production costs, ultimately increasing profitability.

01

50-Ton Electric Arc Furnace Project In China

1 EAF-50t/32 MVA electric arc furnace,
1 LFV-60t/16MVA refining furnace,
1 VC-90t/60t vacuum pouring device,
2 sets of fully automatic alloy feeding systems,
1 set of 120000Nm3/h dust removal system...

02

50-ton Electric Arc Furnace Project in Brazil

1 EAF-50t/25 MVA electric arc furnace,
2 LF-25t/5MVA refining furnaces,
1 fully automatic alloy charging system,
as well as other public auxiliary facilities (ladle, ladle cart, material basket, etc.)...

03

5-Ton Electric Arc Furnace in Uzbekistan

Electric Arc Furnace transformer rated power 3600kVA;
Furnace shell inside diameter: φ3200mm;
Electrode diameter: φ300mm; Average pouring quantity: Maximum 12t.

Request a Custom Solution

Sanrui is well experience in design, manufacturing, installation, commissioning of steelmaking furnace process equipment. Send us your project details inquiry and our team of engineers will design a metallurgical furnace equipment system solution from A to Z based on your needs.

Contact Us

E-mail: anna@srfurnace.com

Tel: +86 159 2955 5868

WhatsApp: +86 159 2955 5868

Add:
Room 102, Building 7A, Free Trade Xintiandi, Fengdong Avenue, Fengdong New Town, Xi'an City, Shaanxi Province

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