How are graphite electrodes made
If you want to know how graphite electrodes are made.
Firstly need to understand what raw materials are needed for the production of graphite electrodes;
Secondly, which manufacturing processes are required.
Let me introduce you to the raw materials of graphite electrodes and the various processes in the production process.
The main raw materials of graphite electrodes are petroleum coke, needle coke, and coal pitch.
Before you understand the production process of graphite electrodes, you can look at the production process diagram below so that you can quickly understand.
The graphite electrode is mainly made of petroleum coke and needle coke, and the coal bitumen is used as a binder. It is made by calcination, compounding, kneading, pressing, roasting, graphitization and machining. It is to discharge electric energy in the form of electric arc in the electric arc furnace. The conductor that heats and melts the charge can be divided into a common power graphite electrode, a high power graphite electrode and an ultra high power graphite electrode according to its quality index.
The main raw material for graphite electrode production is petroleum coke. The ordinary power graphite electrode can be added with a small amount of pitch coke. The sulfur content of petroleum coke and pitch coke cannot exceed 0.5%.
Needle coke is also required for the production of high power or ultra high power graphite electrodes. The main raw material for aluminum anode production is petroleum coke, and the control sulfur content is not more than 1.5% to 2%. Petroleum coke and pitch coke should meet the relevant national quality standards.
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