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Our graphite electrodes are made from high-quality petroleum coke, needle coke and coal pitch. Featuring with low resistivity, good electrical conductivity, low ash, compact structure, good anti-oxidation and high mechanical strength and high precision machining, our products serve as the best conductive material for electric arc furnaces and smelting furnaces.
If you need high-quality graphite electrodes, our wide selection can be a good choice for you. We supply both HD and HP grade graphite for ladle furnaces, foundries, and low-powered electric arc furnaces. Our UHP electrodes are an ideal solution for UHP furnaces. No matter your furnace applications are, we can furnish the graphite electrode solution you need. Our team can provide graphite electrodes in light of your requirements so as to assist you in reaching your business goals.
Furnace Operations：
The electric arc furnace operates as a batch melting process producing batches of molten steel known "heats". The electric arc furnace operating cycle is called the tap-to-tap cycle and is made up of the following operations:
·Furnace charging
·Melting
·Refining
·De-slagging
·Tapping
·Furnace turn-around
Modern operations aim for a tap-to-tap time of less than 60 minutes. Some twin shell- furnace operations are achieving tap-to-tap times of 35 to 40 minutes.
To melt steel scrap, it takes a theoretical minimum of 300 kWh/ton. To provide super heat above the melting point of 2768 F requires additional energy and for typical tap temperature requirements, the total theoretical energy required usually lies in the range of 350 to 370 kWh/ton. However, EAF steel-making is only 55 to 65 % efficient and as a result the total equivalent energy input is usually in the range of 560 to 680 kWh/ton for most modern operations. This energy can be supplied from a variety of sources as shown in the table below. The energy distribution is highly dependent on local material and consumable costs and is unique to the specific meltshop operation.
Historically, electrode consumption has been as high as 12-14 pounds per tons of steel, but through continuous improvement in electrode manufacturing and steel making operations, this has been reduced to the neighborhood 3.5 to 4.5 pounds per ton. Most electrode consumption is through oxidation and tip sublimation, with some small pieces lost around the connecting joint. A considerable portion is also lost to mechanical breakage caused by scrap scrap cave-ins in the furnace or crushing the electrode into the charge.
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