Graphite Electrodes

 Graphite electrodes are a kind of electrically conductive material made of graphite as the main raw material, which is usually used as electrodes in electric arc furnaces, ladle furnaces, resistance furnaces, and other industrial electric furnaces. The graphite electrodes produced by ZhenAn are made of high-quality petroleum coke and asphalt as raw materials, and refined through the processes of calcination, dosing, mixing and kneading, pressing, roasting, graphitization and machining, etc. The joints of the graphite electrodes are made by the process of three times impregnation and four times roasting.

Because graphite electrodes are mainly used as conductive materials in electric arc steelmaking furnaces, their power is determined by the transformer input power per ton of furnace capacity.

Electric arc steelmaking furnaces can be classified into three types: regular power electric furnaces (about 300 kV.A per ton of furnace capacity), high power electric furnaces (about 400 kV.A per ton of furnace capacity), and ultra-high power electric furnaces (500-1200 kV.A per ton of furnace capacity). Based on the input power level of the electric furnace and the different raw materials used in electrode production, as well as the variations in the physical and chemical properties of the finished electrodes, graphite electrodes are divided into three types: regular power graphite electrodes (RP), high power graphite electrodes (HP), and ultra-high power graphite electrodes (UHP).

• Regular power graphite electrodes are produced using ordinary-grade petroleum coke. These electrodes have a low graphitization temperature, high resistivity, high coefficient of linear expansion, poor thermal shock resistance, and therefore a lower allowable current density.
• High power graphite electrodes are produced using petroleum coke (or low-grade needle coke), and sometimes the electrode body needs to be impregnated. Their physical and mechanical properties are slightly better than those of ordinary power graphite electrodes, such as lower resistivity, which allows a higher current density.
• Ultra high power graphite electrodes must be produced using needle coke, with graphitization heat treatment performed in an internal string graphitization furnace at temperatures as high as 2,800 to 3,000°C. As a result, they have lower resistivity, allowing for greater current density, a smaller coefficient of linear expansion, and excellent thermal shock resistance.

Detailed specification:

The following are the specific parameters of regular power graphite electrodes.

Physical & Chemical Index

Current Load

Graphite Electrode Size & Tolerance

Detailed specification:

The following are the specific parameters of high power graphite electrodes.

Physical & Chemical Index

Current Load

Graphite Electrode Size & Tolerance

Detailed specification:

The following are the specific parameters of ultra high power graphite electrodes.

Physical & Chemical Index

Current Load

Graphite Electrode Size & Tolerance

Coupling Torque Reference For Nipple & Electrode

Metallurgical Industry
Graphite electrodes are widely used in the metallurgical industry. In the steel smelting process, graphite electrodes serve as electrodes in electric arc furnaces to provide stable current transmission under high temperatures and high pressures. Additionally, graphite electrodes are extensively used in the production of silicomanganese alloy, ferrosilicon, and other metallurgical materials.

Chemical Industry
In the chemical industry, graphite electrodes are primarily used for the production of fluoride, chloride, alumina, and other chemical materials. Most of these chemical processes require high-temperature and high-pressure environments, and graphite electrodes can withstand these extreme conditions to ensure the efficiency and safety of chemical production.

Power Industry
Graphite electrodes are widely utilized in the power industry. In the power generation process, graphite electrodes are used as cathode materials in the electrolytic preparation of copper, aluminum, and other metals. Moreover, graphite electrodes are important structural materials in the reactors of nuclear power plants.

Conductivity
Graphite electrodes have excellent electrical conductivity and can withstand high current densities and high-frequency current transfers while maintaining good electrical conductivity in high-temperature environments.

Thermal Conductivity
Graphite electrodes possess good thermal conductivity, allowing them to quickly transfer heat to the surrounding medium. This ensures the thermal stability and working efficiency of the equipment.

Corrosion Resistance
Graphite electrodes exhibit good corrosion resistance, enabling them to resist oxidation, acids, alkalis, and other chemical substances. This ensures the long-term stable operation of the equipment.

Packing of Graphite Electrodes:

ZhenAn Graphite Electrodes are packed on wooden pallets with steel strips. And the nipples are preset in the sockets.

Transportation and Storage of Graphite Electrodes:

1. Stored electrodes should be protected from rain and moisture.

2. When loading or unloading the connector box, handle it gently to avoid collision, which may cause thread damage.

3. When lifting or inverting the electrode, take care to prevent the electrode from slipping due to tilting and causing damage.

4. To ensure the electrode end face and threads remain intact, do not lift the electrode by directly hooking the holes at both ends with an iron hook.

5. Do not stack the electrodes and connectors directly on the ground. Instead, place them on wooden cubes or iron frames to prevent damage or contamination with soil. For electrodes and connectors that are not in immediate use, do not unpack them to prevent dust and debris from falling on the threads or into the electrode holes.

Q: What is your delivery time of graphite electrodes?

A: It depends on the size/complexity of your order and our production schedule. Usually, we provide a faster delivery than the industry's average.

Q: What is the payment term?

A: Our payment terms are negotiable.

Q: I have some special requirements about graphite electrodes.

A: We have a well-rounded product range, which endows us with the capability of applying many special specifications. Please feel free to contact us with yours.

Q: Do you accept OEM services?

A: Yes, we do.

Hot Tags: graphite electrodes, China graphite electrodes manufacturers, suppliers, factory, Tungsten Copper Alloy Plate, Alloy Additive Low Carbon Ferro Manganese 88, Silicon carbide deoxidizer, Black Silicon Carbide Fine Powder, W80cu20 ASTM B702, Ferro Tungsten 70