Application Of Graphite Blocks In Industry

- Aug 23, 2017-

     Graphite has good chemical stability. After special processing of graphite, with corrosion resistance, good thermal conductivity, low permeability characteristics, a large number of used in the production of heat exchanger, reaction trough, condenser, burning tower, absorber, cooler, heater, filter, pump equipment. Widely used in petrochemical, hydrometallurgy, acid and alkali production, synthetic fiber, paper and other industrial sectors, can save a large number of metal materials.Graphite Blocks
    Used in EAF: Graphite electrode is mainly used for steelmaking of EAF. EAF steelmaking is the use of graphite electrodes into the furnace to import current, a strong current at the bottom of the electrode through the gas arc discharge, using the heat generated by the arc smelting. According to the size of the furnace capacity, with different diameters of graphite electrodes, in order to make the electrode continuous use, the electrodes are connected by the electrode threaded joint.Graphite Blocks
     The graphite electrode of steelmaking is the $number of the total amount of graphite electrode. For mine thermoelectric furnace: Graphite electrode mine thermoelectric furnace is mainly used for the production of Ferroalloy, pure silicon, yellow phosphorus, ice copper and calcium carbide, which is characterized by the lower part of the conductive electrode buried in the burden, so that in addition to the electric plate and charge between the arc generated heat, the current through the charge when the resistance also generates heat Each ton of silicon needs to consume about 150kg of graphite electrode, each ton of phosphor consumes graphite electrode about 40kg.Graphite Blocks
    For resistance furnace: the production of graphite products for graphite furnace, melting glass melting furnace and the production of silicon carbide furnace, etc. are resistance furnaces, the furnace is the material is not only the heating resistance, but also the object of heating. Usually, the conductive graphite electrode is inserted into the furnace head wall at the end of the hearth, so the conductive electrode is not continuously consumed. In addition, a large number of graphite electrode blanks are also used for processing into a variety of crucible, graphite boat, hot-pressing mold and vacuum furnace heating body and other special-shaped products. such as in the quartz glass industry, each production LT electric melting tube need graphite electrode blank 10t, each production LT quartz brick consumption electrode blanks 100kg.Graphite Blocks
    The oxidation-resistant process of graphite electrode is a series of processes, such as preparation, soaking and heating, and immersion treatment. Weighing: the graphite electrode weighing to provide qualified to be processed materials; the preparation and heating of the leaching solution: the constituents of the immersed solution include industrial boric acid (h↓[3]bo↓[3]) 18-27%, industrial borax (na↓[2]b↓[4]o↓[7) 7-15%, after mixing, the water is adjusted into a liquid, and then heated; immersion treatment: the prepared graphite electrodes are sealed in a vacuum tank, vacuum pumped with a vacuum pump, and immersed in a vacuum tank, and in the process of immersion.Graphite Blocks
     When the concentration of the immersion liquid drops, it is suitable to be supplemented; secondary weighing: After immersion treatment, open the vacuum tank, remove the dipped graphite electrode, leach the liquid, after the immersion electrode weight of more than 10%; drying process: The water content of the electrode is not higher than 0.5% by drying the graphite electrode after immersion; weigh it three times: after drying, weigh the graphite electrode again, make it the increase in weight is more than 3% of the prior weight of the dip; finished processing: The above-treated graphite electrodes can be machined to a standard shape. The treated graphite electrodes can be machined to a standard shape as needed.Graphite Blocks