Bosh played up gas flow cushion. Burden here has some reducing slag, coal layer permeability variation, slag erosion seriously at the same time. In addition, the furnace waist high temperature (1400 ~ 1600 ℃, the high temperature erosion of radiation; Alkali erosion is serious; Hot furnace gas containing dust rise, have stronger scouring effects on furnace lining; Coke and so on friction material; Hot air caused by the rapid changes in temperature. The combination of the above factors, this part of the refractory material damage is very serious. Therefore, furnace waist a general choice strong slag corrosion resistance, resistance to erosion of refractory materials. The cooling plate structure have use graphite brick lining.
