We all got to know steel. It’s used by us with your everyday life. But ever thought about the way to produce it? As well as what does it decide to use produce it? Simply the steel is made in a big factory which is cooked in the giant stove called furnace. And also the cooking itself takes so many ingredients within it.

The Blast Furnace and Electric Arc Furnace methods would be the two major processes for producing iron and steel products. Scrap melting could be the major process utilizing Electric Arc Furnaces. Recently, industry competition has grown to be increasingly intense, elevating the requirement for a lot more efficient melting process. Capacities of the transformers are becoming larger and electric furnaces are increasing larger worldwide. With this manufacturing environment, graphite materials which may have durability for larger-power operation are essential considerably more for the use as Graphite Electrode (GE).

GE are made from carbon. Carbon can be a nonmetal element with the atomic quantity of 6 and also the atomic symbol “C”. Carbon could be the base of organic chemistry, closely related to organic matter and life activity. Manufacturing excellent graphite electrodes requires quality materials that are strictly selected.

Graphite features a higher heat transfer rating, capacity higher temperatures, and possesses more strength against thermal shock than many other materials. Moreover, it excels in machinability in order to meet what’s needed for any broader variety of dimensions. Thus, graphite may be the optimum material for scrap-melting electrodes.

GE can be consumed at high temperatures as a result of reaction with oxygen being CO, CO2. The oxidation of electrodes starts at 500oC and accelerates its speed at 800oC (within the furnace). Consumption of graphite electrodes by sublimation occurs at 3400o. The rate of sublimation is proportional towards the increase of current density.

Meanwhile, use of quality GE results in contributions to saving energy and environmental conservation. Electric arc furnaces, with the main objective of recycling steel scraps, boost reuse of steel products.

Production organization of graphite electrodes can be divided as 10 stages the following:

Raw material transporting
Kneading
Extruding
Baking
Pitch Impregnation
Re-Baking
Graphitization
Machining
Inspection
Shipment
The common sizes for graphite electrodes originate from diameter 10″ (inch) to 30″(inch) and from period of 60″(inch) to 110″(inch). The weights are which range from 123 Kgs (10″ x 60″) to 2060 Kgs (30″ x 110″).

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