about zhengnai
Your current location: Home > Case >

What are the conditions for using graphite electrodes?

May 21,2019January 10, 2019
1The electrodes are part of the furnace lid and are assembled into columns. Electricity then passes through the electrodes, forming an arc of intense heat that melts the scrap steel. Electrodes vary widely in size but can be up to 0.75 metres (2 and a half feet) in diameter and as much as 2.8 meters (9 feet) long. The largest weigh more than two metric tons.

2The tip of the electrode will reach 3,000 degrees Celsius, half the temperature of the sun’s surface. Electrodes are made of graphite because only graphite can withstand such intense heat.

3Graphite electrodes are used for the recycling of steel in the electric arc furnace industry, so called “mini-mills”. They are also used in the refining of steel as well as in the non ferrous industries, where smelting processes are in use. 

4Carbon products are the result of a complex process. Once extruded, the green bodies spend several months in different types of furnaces. In a special scheme, individually adjusted to every product, the duration and the temperatures of up to 3.000 °C are determined – it is thus guaranteed that the graphite body will fulfil the high requirements when it is in operation. Graphite electrode withstand highest mechanical chemical and thermal loads.

5Graphite electrodes are utilised in electric arc furnace for steel manufacturing and refinement process. Increasing use of the material in electric arc furnace for metal melting process and steel scrap will increase the demand for the material over projected period.