Electrode Carbon Paste also known as Soderberg Electrode Paste made from mix of fractions of Calcined Petroleum Coke (CPC) or Electrically Calcined Anthracite Coal (ECA coal) mixed with Coal Tar Pitch as Binder and Anthracene Oil at a predetermined temperature. It is used as conductor in sub merged arc furnace under self Baking process while manufacturing different types of Ferro Alloys and Calcium Carbides.
MANUFACTURING PROCESS
Calcined Petroleum Coke (CPC)/ ECA Coal produced in the Calcinations plants are brought and subjected to crushing and screening to various fraction sizes as per formulations, the fractions as available are proportioned and mixed with the milled fractions. The desired quantity of fractional material with binder is weighed and transferred into Sigma Mixer.
The Mixer is heated to about 1600 C and operated (mixing) for a constant time cycle also called “mixing cycle” to obtain the homogeneity and desired plasticity of the paste. On completion of the mix operation, the product is discharged and dumped on the mould box and cast into blocks for onward dispatches to our valued customers.
QUALITY PARAMETERS
Carbon Electrode Paste is one of the important factors which govern the quality of Soderberg Electrode; Fluctuations in the quality of electrode paste may lead to operational problems in smelting furnaces. With highly consistent raw materials,unique technical process and management, EECPL ensures a very stable quality in the end products, which reduces the possibility of furnace problems.
At the customer’s end the paste is charged on the upper part of Soderberg Electrode, the flowability, measure of Plasticity, is the main requirement of paste. It is important that the paste flows at a reasonable temperature and fills the casing properly. The plasticity of Paste is adjusted while manufacturing by adjusting binder content depending upon the electrode diameter. In the lower baked part of the Electrode, the physical properties of the paste are very important to ensure smooth operation of the electrode without any breakage.
