The Electrode Paste Formula among of the key components in the making of carbon electrodes used in aluminum melting. The paste serves as the foundation that carbon electrodes need for operation in an arc-furnace. The paste's composition determines its ability to resist high temperatures and different electrical conditions in addition to its physical strength. The best electrode pastes are made from an amalgamation of coal tar binder and the finely crushed powdered carbon. The fine particles are mixed by a specific ratio of binder in order to make sure that the paste is of the correct density. The ratio will determine whether the carbon particles stick together or separate during usage.
Electrode paste formulation includes a series of steps: batching and weighing and weighing, selecting raw materials as well as powder mixing, the determination of particle size and binder dosage calculation, and recycling of production return materials. The product that is created should be able to hold together and fully fill the electrode cylinder as well being sinterable and easy to use, and have the lowest amount of ash.
Petroleum coke and Anthracite are the principal ingredients used in the preparation of electrode paste. Carbon in these raw materials needs to be processed to attain the appropriate level of performance for electrode paste. The raw materials are then cooked at temperatures ranging from 450 to 475°C. The volume of carbon volatile is reduced by this process, and the electrolyte's conductivity to heat as well as its strength mechanically is increased.
After the calcination process, the raw materials should be crushed into a small particle size, and then combined with the right coal tar binder. It is important that particle sizes are matched for the most effective bonds between large, medium as well as small carbon grains. This will result in an evenly distributed aggregate. The aggregate must also be sinterable, and possess a high thermal conductivity. It must have a density that permits it to hold its shape under difficult working conditions and keep its shape during the use of electrodes.
A good carbon electrode paste must be thermally stable that allows it to stand up to the extreme temperatures and rough environments of an electric arc furnace. The electrode should be sturdy enough mechanically to resist the stresses and vibrations of the electric arsenal furnace. Also, it must prevent cracks or delamination during the process. Also, it is essential that the material has good chemical stability, which will prevent unintentional impurities from harming the electrode.
Since the beginning, Saxin Carbon has been making electrode paste of superior quality and with calcined petroleum coke as well as graphite blocks. Its technical personnel with college degree or higher make up over 20% of its total workforce and the company has three pretreatment facilities for raw materials as well as five mixing and kneading manufacturing lines, and three production lines for molding workshops. Top-quality technical talent from the company is backed by years of industrial experience, and it is equipped with the latest testing and research technology. Youming is the chief engineer in charge of the technical department and is responsible for all R&D of electrode paste products.
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