In 2002, some customers have asked whether a new variety of graphite electrodes with properties between UHP graphite electrodes and HP graphite electrodes could be manufactured? In this way, it can not only meet the production needs of ultra-high power refining furnaces but also have a relatively large price drop compared to the UHP electrode. However, there is a carbon company that fulfills these customers’ demands. They have developed a new variety of graphite electrodes between ultra-high power graphite electrodes and high-power graphite electrodes, quasi-ultra high power graphite electrodes. This graphite electrode product requires various physical and chemical performance indexes to reach or be close to the UHP graphite electrode, but the production cost is greatly reduced so that the sales price also drops significantly.
Brief Introduction of Quasi-Ultra High Power Graphite Electrode
The properties of quasi-ultra high power graphite electrodes are between the high power graphite electrodes and ultra-high power graphite electrodes, close to those of UHP graphite electrodes, which can meet the demand of UHP graphite electrodes for LF and high power graphite electrodes for electric are furnace, and reduce the cost of the production of HP graphite electrodes and ultra-high power graphite. The technologic processes for φ350 ~ φ500mm quasi-ultra high power graphite electrodes were introduced, which were made from imported high-ranking/ordinary needle cokes to a scale in some carbon manufacturer. The results show that the properties of products obtained are close to those of ultra-high power graphite electrodes, and can meet the demand of ultra-high power graphite electrodes for LF.
Characteristics of Quasi-Ultra High Power Graphite Electrode
(1) The calcined coke produced by China’s domestic petroleum coke and the imported ordinary-grade needle coke is mixed in a certain proportion. The physical and chemical indexes of the produced quasi-ultra-high-power graphite electrodes have all met the requirements of the enterprise standard Q/140200DNT001-2007 “Quasi-ultra-high-power graphite electrodes“, and the trial production effect has reached the expected target.
(2) The sample analysis report proves that the performance index of the quasi-ultra-high-power graphite electrode is close to that of ultra-high-power graphite electrode, which can meet the production needs of ultra-high-power refining furnace.
(3) Finally, because part of the raw materials used by China-made petroleum coke, the production cost of quasi-ultra-high-power graphite electrodes is significantly lower than that of ultra-high-power graphite electrodes. Therefore, the selling price of quasi-ultra high-power graphite electrodes has also been reduced. From the customer’s perspective, it can effectively reduce the production cost of ultra-high power refining furnaces.