Graphite electrode RP

Graphite electrodes are mainly made of petroleum coke and needle coke, and coal tar pitch is used as a binder. They are made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. They release electric energy in the form of arcs in electric arc furnaces. The conductors for heating and melting the charge can be divided into ordinary power graphite electrodes, high power graphite electrodes and ultra-high power graphite electrodes according to their quality indicators.
The main raw material for graphite electrode production is petroleum coke. A small amount of pitch coke can be added to ordinary power graphite electrodes. The sulfur content of petroleum coke and pitch coke cannot exceed 0.5%. Needle coke is also required when producing high-power or ultra-high-power graphite electrodes. The main raw material for aluminum anode production is petroleum coke, and the sulfur content is controlled not to exceed 1.5% to 2%.

Application of Graphite Electrode
1. Used in electric arc steelmaking furnace
Electric furnace steelmaking is a major user of graphite electrodes. my country's electric furnace steel production accounts for about 18% of crude steel production, and graphite electrodes for steelmaking account for 70% to 80% of the total graphite electrode consumption. Electric furnace steelmaking is to use graphite electrodes to introduce current into the furnace, and use the high-temperature heat source generated by the arc between the electrode end and the charge to smelt.
2. Used in submerged heat electric furnace
The submerged thermal electric furnace is mainly used for the production of industrial silicon and yellow phosphorus, etc. It is characterized in that the lower part of the conductive electrode is buried in the charge, an arc is formed in the charge layer, and the heat energy emitted by the charge's own resistance is used to heat the charge. Submerged arc furnaces with higher density need to use graphite electrodes. For example, about 100kg of graphite electrodes are consumed for producing 1t of silicon, and about 40kg of graphite electrodes are consumed for producing 1t of yellow phosphorus.
3. Used in resistance furnace
Graphitization furnaces for the production of graphite products, melting furnaces for melting glass, and electric furnaces for the production of silicon carbide are all resistance furnaces. The materials in the furnace are both heating resistors and objects to be heated. Usually, the conductive graphite electrodes are embedded in the end of the resistance furnace. In the furnace head wall at the bottom, the graphite electrodes used here are discontinuously consumed.
4. Used to prepare special-shaped graphite products
The blanks of graphite electrodes are also used to process various shaped graphite products such as crucibles, moulds, boats and heating elements. For example, in the quartz glass industry, 10 tons of graphite electrode blanks are needed for every 1 ton of electric fusion pipe produced; 100 kg of graphite electrode blanks are needed for every 1 ton of quartz bricks produced.