How is graphite electrode made?
The production of graphite electrodes involves several key steps:
Raw Material Preparation: The main raw material is calcined petroleum coke, which is mixed with coal tar pitch as a binder. The coke provides electrical and thermal conductivity, while the pitch helps bind the particles together.
Forming: The mixture is kneaded and then molded into the desired shape-usually by extrusion or vibration molding-to form green electrodes (unbaked).
Baking: The green electrodes are baked in high-temperature furnaces (around 1,000–1,200°C) to carbonize the pitch binder, resulting in a solid carbon structure.
Graphitization: The baked electrodes are then heated to extremely high temperatures (2,500–3,000°C) in an electrically heated furnace, often using Acheson graphitization technology. This process converts the amorphous carbon into crystalline graphite, enhancing its electrical and thermal properties.
Machining: Finally, the electrodes are machined to precise dimensions and tolerances to ensure proper fit and performance in electric arc furnaces.
The entire process is energy-intensive and requires careful quality control to produce high-performance graphite electrodes suitable for industrial use.
Visit graphite-electrode-products.com to learn more about the product. If you would like to know more about the product price or are interested in purchasing, please send an email to info@zaferroalloy.com. We will get back to you as soon as we see your message.