types of graphite electrodes

What is general power, high power and ultra high power types of graphite electrodes

1. Using ordinary petroleum coke as raw material, the universal power type of graphite electrodes with low graphitization temperature, low pain, high resistivity, high linear expansion coefficient, and poor thermal shock resistance are prepared, which has a good low current density application prospect.

2. The high-power types of graphite electrodes are made of high-quality petroleum coke (or low-grade needle coke). Sometimes types of graphite electrodes need to be impregnated. Its physical and mechanical properties are higher than those of ordinary power types of graphite electrodes, such as low resistivity, high current density, etc.

3. The production of ultra-high-power types of graphite electrodes requires the use of high-quality needle coke, and the graphitization heat treatment should be carried out in an internal tandem graphitization furnace. The graphitization temperature is as high as 2800～3000℃, and the resistivity is low. The results show that with a higher current density, the coefficient of linear expansion is smaller, and it has good thermal shock resistance. Extended materials: types of graphite electrodes are mainly made of petroleum coke, needle coke, and coal pitch as the binder, which are calcined, batched, kneaded, pressed, roasted, graphitized and mechanically processed.

They are conductors that heat and melt the charge by releasing electrical energy in the electric arc furnace. According to their quality indicators, they can be divided into general power stones. Ink types of graphite electrodes, high-power types of graphite electrodes, and ultra-high-power types of graphite electrodes. The main raw material of types of graphite electrodes is petroleum coke. Generally speaking, power types of graphite electrodes can add a small amount of pitch pitch. The sulfur content of petroleum coke and pitch coke cannot exceed 0.5%. Needle coke is also needed to produce high-power or ultra-high-power types of graphite electrodes.