The graphite electrode is calcined and graphitized in a furnace, and the electrode paste is formed by high-temperature mixing and kneading of residual electrode forged coal. Strictly speaking, the carbonization degree of graphite electrode is higher than that of electrode paste. Its performance in terms of electrical conductivity and heat conduction is much higher than that of electrode paste.
If the electrode paste is not an electrode, it is also wrong. After the electrode paste is melted and roasted, the electrode paste becomes an electrode. After conducting, an electric arc is formed. The high temperature released by the electric arc melts the raw ore of the special alloy.
Therefore, the electrode paste is also called a self-baking electrode. Simply put, the electrode paste is a semi-finished product of the electrode. One problem to be noted here is that the electrode paste is by no means a semi-finished product of graphite electrodes. Graphite electrodes are graphitized. Although its core components are all carbon, the arrangement and combination of carbon atoms in electrode paste and graphite electrodes are different.
Carbon products commonly used in industry refer to carbon products purified using amorphous carbon raw materials (such as coal, petroleum coke, pitch coke, etc.). With the different raw materials and processing technology, the ratio of the graphite crystal structure contained in the carbon element crystal structure in this type of carbon products will be different. Generally speaking, the more graphite crystal structure components are contained, the higher the purity of the carbon, the higher the performance and the price. Because the essential difference between carbon materials and graphite materials is not that big, many carbon products are also dubbed “graphite XX”.
Graphite is an allotrope of elemental carbon. The periphery of each carbon atom is connected with three other carbon atoms (multiple hexagons arranged in a honeycomb-like manner) by covalent bonds to form a covalent molecule. Since each carbon atom emits an electron, those electrons can move freely, so graphite is an electrical conductor. Graphite is divided into natural graphite and artificial graphite. Natural graphite ore is divided into earthy graphite and flake graphite, among which flake graphite is a higher quality natural graphite. Artificial graphite refers to the graphite material obtained by further processing the carbon material classified as amorphous carbon, improving the purity of the carbon, and further increasing the proportion of the graphite-like crystal structure. Like carbon materials, graphite materials can be made into industrial products such as electrodes and refractory materials. But because of its more excellent characteristics, it has applications in many high-end fields. For example, high temperature resistant lubricants, battery material coating modification and so on.