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Electric Arc Furnace (EAF): Industrial furnaces that use metal or non-metal electrodes to generate arc heating are called electric arc furnaces.
Its a furnace that smelts ores and metals using the high temperatures generated by electrode arcs.
When the gas discharge forms an arc, the energy is very concentrated, and the arc temperature is above 3000°C.
Electric arc furnaces are more flexible for metal smelting than other steelmaking furnaces. It can effectively remove impurities such as sulfur and phosphorus.
The furnace temperature is easy to control, and the equipment occupies a small area. It is suitable for smelting high-quality alloy steel.
The electric arc furnace body is composed of furnace cover, furnace door, tapping groove and furnace body. The furnace bottom and furnace walls are constructed with basic or acid refractory materials.
The ton furnace capacity transformer can be divided into ordinary, high-power and ultra-high-power electric arc furnaces.
Electric arc furnace steelmaking uses graphite electrodes to feed electrical energy into the electric arc furnace. The arc between the electrode tip and the charge is used as a heat source for steelmaking.
Electricity is the heat source of the electric furnace, which can adjust the atmosphere in the electric furnace, which is very beneficial to the smelting of steel with more easily oxidized elements.
Using the high temperature flue gas of the electric furnace, the raw materials can be preheated through technology and equipment to achieve high efficiency, energy saving, environmental protection and high yield.
Features:
1. Electric arc furnaces is a furnace that heats the charged material by means of anelectric arc and electricity as the main energy sources.
2. The arc zone temperature can reach up to 3,000ºC ,the meltingtemperature more than 1700c.
3. Regardless of good quality steel scrap or poor, all can be charged
in EAF as feedstock, and achieve high quality steel (Such as carbonsteel can be charged in EAF to obtain stainless steel)
4. Output of Electric arc furnace much more than others scrap smelting furnace.
Classification Of Electric Arc Furnace Steelmaking Materials
Metallic materials:
Including scrap steel, pig iron, molten iron, direct reduced iron (DRI), ferroalloys, iron ore and iron oxide scale, etc.
Non-metallic materials:
Including slag-making materials, such as lime, fluorite, dolomite, carbon balls (carbon powder), high-alumina vanadium, etc.;
Synthetic slag materials, such as desulfurizers, molten synthetic refining slag, etc.;
Refractory materials, such as furnace bottom refractory materials, ladle refractory materials, middle refractory materials, etc.;
Other materials, such as electrodes, carburizers, insulation agents, protective slag, etc.
Specification of Electric Arc Furnace:
| Model | Furnace Enclosure Inner Diameter (mm) | Rate Capacity / Max Capacity (ton) | Furnace Transformer | Reactor Power (KVA) | Electrode Pitch Circle Diameter | Electrode Diameter(mm) | |
Rated Power (KVA) | Secondary Voltage (V) | ||||||
HX-0.5 | 2000 | 0.5/1 | 630 | 200-98 | 120 | 500 | 150 |
HX-1.5 | 2200 | 1.5/3 | 1250 | 210-104 | 200 | 650 | 200 |
HX-3 | 2600 | 3/8 | 2200 | 210-104 | 250 | 750 | 250 |
HX-5 | 3200 | 5/12 | 3200 | 221-110 | 320 | 850 | 300 |
HX-10 | 3500 | 10/16 | 5000 | 240-121 | 360 | 1000 | 350 |
6300 | 260-139 | 360 | |||||
HX-15 | 3700 | 15/20 | 6300 | 260-139 | 340 | 1000 | 350 |
9000 | 260-139 | ||||||
HX-20 | 4000/ 4200 | 20/32 | 9000 | 260-139 | / | 1000 | 350 |
12500 | 340-195 | / | 1050 | 400 | |||
16000 | 375-200 | / | 1050 | 400 | |||
HX-30 | 4600 | 30/45 | 16000 | 375-200 | / | 1100 | 450 |
25000 | 570-350 | 4000 | 1100 | 450 | |||
32000 | 650-350 | 6800 | 1100 | 450 | |||
HX-50 | 5000 | 50/60 | 25000 | 570-350 | 4000 | 1100 | 450 |
32000 | 650-350 | 6800 | 1100 | 450 | |||
35000 | 670-370 | 7800 | 1100 | 450 | |||
HX-80 | 5800 | 85/95 | 35000 | 650-350 | 6800 | 1100 | 450 |
40000 | 690-390 | 8500 | 1250 | 500 | |||
50000 | 800-500 | 9800 | 1300 | 500 | |||
HX-100 | 6200 | 100/120 | 35000 | 670-520-370 | 7800 | 1100 | 450 |
50000 | 800-650-340 | 9800 | 1300 | 500 | |||
63000 | 920-720-480 | 13000 | 1350 | 600 | |||
Strengths Of SR Electric Arc Furnace
1. Low power consumption
SR's large current system made of pure copper as conductive medium, the whole circuit with less resistance. Electrode arm shaped as copper-clad box type, resistance and heat can be reduced efficiently. Reasonable arrange of all conductive systems to minimize the resistance of every circuit.
2. Safety & Stability
Full set of hydraulic driving system equipped with accumulator to ensure stability of facilities in the operation process. Whist, equipments can go on the motion when there any emergency accidents happen.
3. Low electrode consumes
Electrode breaks in the process of melting brings huge economic losses and inconvenience. SR's patented <anti-break of electrode system> technology dramatically drops the possibility of electrode cracks in the operation.
4. High flexibility & Maximum simplicity of operation
HMI used in electrical automation control, interface simulates the real form of furnace, which make the operation more convenient. Mixing feedstock, charging feedstock, melting, tapping all the commands can be implemented by computer.
5.High arc forming efficiency
SR's patented technology " Precision regulating electrode ", utilizing multi signal acquisition, PLC signal contrast technology,shortening the formation time of electrode arc,so that to avoid long time arc formation influence the upper grid system. Different with traditional single signal return control technique.
6.Diversified dust removal system
SR's furnaces are equipped with a variety of dust removal systems, can be based on environmental requirements of different countries support different forms of dust removal equipments.
Xi′an Sanrui Electric Furnace Co.,Ltd has decades of manufacturing experience in the furnace industry, has accumulated a lot of professional technology and production experience, and is located in Xi′an, the hometown of furnaces, Shaanxi Province.
As a professional steelmaking furnace manufacturer, SR Metal Tech focuses on the development, design and production of various Specifications of steelmaking electric arc furnaces, submerged arc furnaces, ladle refining furnaces, ferroalloy refining furnaces, And induction furnaces.
And smelting furnace auxiliary equipment accessories: Water-cooled furnace cover, water-cooled cables, alloy additives, electric arc furnace regulators, refining furnace regulators, and various trolley furnaces, well-type, box-type resistance furnaces, etc for heat treatment.
