graphite electrode rp

What is the difference between graphite electrode rp, high-power graphite electrode and ultra-high-power graphite electrode

Due to the large number of domestic graphite electrode manufacturers, the quality of graphite electrode products produced by each manufacturer is uneven, with high or low quality. The graphite electrode manufacturers mainly include graphite electrode rp, high-power graphite electrode and ultra-high-power graphite electrode. The three graphite electrode materials are mainly due to different raw materials.

The raw materials of graphite electrode rp are mainly provided by domestic coking plants, with good quality such as Daqing Oil Refinery and Fushun Coking Plant, and ordinary quality such as PetroChina No. 5 Plant. The production structure is mainly ordinary petroleum coke and a certain ratio of coal pitch. Become. The raw material ratio of the high-power graphite electrode is 30% imported needle coke and 70% domestic petroleum coke plus coal pitch.

The raw material ratio of the ultra-high-power graphite electrode is 70-90% imported needle coke and coal tar pitch. Although the above three graphite materials are different in the ratio of raw materials, the production process is the same. The process includes raw material cracking powder screen, press molding, roasting furnace calcination, high pressure impregnation, re-roasting, graphitization and machining!