Uses of graphite electrodes

Graphite electrode refers to a form of resistant materials made through the use of petroleum coke and pitch coke as combination and coal pitch as binding agent by uncooked materials calcination, crushing and grinding, batching, kneading, molding, roasting, impregnation, graphitization and mechanical processing. The high-temperature graphite conductive materials is named synthetic graphite electrode (graphite electrode for brief), which is totally different from the pure graphite electrode ready through the use of pure graphite as uncooked materials.

(1) Utilized in electrical arc steelmaking furnace

Graphite electrode supplies may be primarily used for electrical furnace steelmaking. Electrical furnace steelmaking makes use of analysis graphite electrodes to introduce working present into the furnace. The highly effective present on the decrease finish of the electrode can have an effect on arc discharge by these fuel environments, and the warmth generated by the arc is used for smelting. The scale of the electrical capability is supplied with graphite electrodes with totally different diameters, which can be utilized constantly, and the connection between the electrodes towards the electrode joints. Graphite utilized in steelmaking as an electrode materials accounts for about 70-80% of the whole consumption of graphite electrodes in China.

(2) Utilized in submerged electrical furnace

It’s primarily used to provide iron furnace ferroalloy, pure silicon, yellow phosphorus, calcium carbide and matte. Its attribute is that the decrease a part of the conductive electrode is buried within the cost, so along with the warmth generated by the arc between the electrical plate and the cost, the present passes by the cost On the similar time, warmth can be generated by {the electrical} resistance of the cost. Each ton of silicon consumes about 150kg of graphite electrode, and each ton of yellow phosphorus consumes about 40kg of graphite electrode.

(3) Utilized in resistance furnace

Within the manufacturing course of, the graphitization furnace for graphite materials merchandise, the furnace and manufacturing of melting technical glass, and the electrical furnace for silicon carbide are all resistance furnaces. The administration of the supplies within the furnace is each a heating resistor and an object to be heated. Often, the graphite electrode for conducting is inserted into the furnace head wall on the finish of the fireside, so the conducting electrode is just not consumed constantly.

(4) For processing

Numerous graphite electrode blanks are additionally used to course of numerous crucibles, graphite boats, sizzling die casting molds and vacuum electrical furnace heating components and different special-shaped merchandise. For instance, within the quartz glass trade, 10t of graphite electrode clean is required for each manufacturing of lt electrical fusion tube, and 100kg of electrode clean is consumed for each manufacturing of lt quartz brick. It must also be famous that there are three kinds of graphite composite supplies at excessive temperatures, together with graphite electrodes, graphite molds and graphite crucibles. In these three supplies, graphite is liable to oxidation and combustion reactions at excessive temperatures, leading to floor glue. The elevated porosity and unfastened construction of the carbon layer have an effect on the service life.