Introduction of Refractory Bricks for Electric Arc Furnace Bottom

Electric Arc Furnace (EAF) is an important equipment used for steelmaking in the metallurgical industry. It produces steel by heating metal scraps or raw materials with electric arcs. During the operation of the electric arc furnace, the furnace bottom needs to withstand high temperature, Yuqori bosim,e, and chemical corrosion. Shuning uchun, the refractory bricks of the furnace bottom must have extremely high fire resistance, zarba qarshiligi, thermal shock resistance, and good chemical stability. These requirements determine the importance of refractory bricks in the selection and use of electric arc furnace bottoms.

What conditions should the refractory bricks of an electric arc furnace meet?

① Low resistivity;
② Low thermal conductivity;
③ Small change in resistance with temperature;
④ Good thermal shock resistance and slag resistance;
⑤ Long service life and low consumption.

Introduction to refractory materials for EAF bottom

To meet the above conditions, conductive magnesiya uglerod g'ishtlari are directly laid on the copper plate of the conductive furnace bottom, and a layer of ramming material with good conductivity is covered on the built furnace bottom, with a thickness of about 150mm. Ishlab chiqarish jarayonida, carbon-containing magnesium materials can be used for repair. This refractory furnace bottom can be repaired hot and cold and has a longer service life than other furnace types.
For magnesia carbon bricks that meet the above requirements for the conductive furnace bottom of the DC arc furnace, only when the key material (graphite) in the magnesia carbon brick reaches a certain amount of residual carbon, can the carbon-containing bonding matrix be used to obtain higher conductivity.