china rp graphite electrode

china rp graphite electrode diameter 300-600 ultra high power

china rp graphite electrode Detailed description:

1. General power The china rp graphite electrode is produced from general grade petroleum coke, with low graphitization temperature, high resistivity, large linear expansion coefficient, and poor thermal shock resistance, so it allows for low current density.

2. The high-power china rp graphite electrode is made of high-quality petroleum coke (or low-grade needle coke). Sometimes the electrode body needs to be dipped, and its physical and mechanical functions are higher than the normal power china rp graphite electrode, such as low resistivity. , Allowing for a larger current density.

3. The ultra-high power china rp graphite electrode must be produced from high-grade needle coke, and its graphitization heat treatment should be performed in an in-line graphitization furnace. The graphitization temperature is as high as 2800-3000°C, so the resistivity is lower. , Promises to go through a larger current density, a smaller linear expansion coefficient, and excellent thermal shock resistance.

china rp graphite electrode mainly uses petroleum coke and needle coke as raw materials, coal tar pitch as a binder, and is made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. It is made by electric arc in an electric arc furnace. The conductor that releases electric energy to heat and melt the furnace charge can be divided into general power china rp graphite electrode, high power china rp graphite electrode and ultra-high power china rp graphite electrode according to the unevenness of its quality index. The main raw material produced by china rp graphite electrode is petroleum coke. Normal power china rp graphite electrode can be added with a small amount of pitch coke, and the sulfur content of petroleum coke and pitch coke cannot exceed 0.5%.

Needle coke is needed when producing high-power or ultra-high-power china rp graphite electrode. The main raw material produced by the aluminum anode is petroleum coke, and the sulfur content is controlled not to exceed 1.5% to 2%. The petroleum coke and pitch coke should meet the relevant national quality standards.