wanhaorefractory

The most critical factor in the development of graphite electrodes is the grade of petroleum coke used, as higher grades of the petroleum coke produce higher quality electrodes. In addition to the grade of petroleum coke, several other factors can impact the quality of the HP graphite electrode and its ability to carry a current such as length, diameter, bulk density, resistance and porosity. For example, lower grades of coke do not allow for an electric current to pass through as easily. There are two different types of graphite electrodes available. One type is called “SDGE,” which stands for small diameter High power graphite electrodes . These electrodes are most commonly used for melting scrap metal and other refractory raw materials and are used in Electric Arc Furnaces (EAF). These electrodes carry a current that creates an arc between the electrode and the refractory raw material, causing it to melt. The other electrode type is the “LDGE” or large diameter HP

Ladle covering agent is used for heat preservation in ladle, good ladle covering agent is able to automatically break and spread out once put into ladle with molten steel to form a full cover with three layers melting structure, to prevent molten steel from reoxidation and heat radiation and absorb harmful subsidiaries on the molten steel surface. There should be no slag adhering, no carbon increasing, no erosion to the lining, no crusting, able to prolong ladle service life, easy to operate, decrease labor work. 1.Thermal insulation effect should be good, molten steel temperature drop should be less than 0.5℃/min. 2.Smaller specific weight, no splash when charging, good working condition, no pollution, safe, no bad influence on molten steel quality. 3.Round granular, good motility, in loose condition after charging, good spreadability, able to form a full cover in a short time. 4.No crusting. Wanhao is a manufacturer who is specialized in designin