Selection Guide for Refractory Materials for Soaking Furnace

As one of the heat treatment furnaces in the rolling mill, how to select the refractory materials for the soaking furnace? In response to the doubts of purchasers, the editor will introduce the selection guide of refractory materials for soaking furnace in detail for reference only. If you need help with selection, please contact our online customer service.

The soaking furnace is composed of furnace cover, furnace wall, furnace bottom and heat exchange device. The working environment of the soaking furnace lining plays a decisive role in the selection of refractory materials. The environment is as follows:

① Long-term exposure to high temperature;

②Withstand the effects of steel ingot abrasion and collision of loader clamps;

③The furnace cover is often opened and closed, and the furnace lining is subjected to rapid cold and rapid heat.

According to the above conditions, the refractory materials for heating furnaces mainly include clay bricks, high alumina bricks and silica bricks, which are mainly used for soaking furnace lining; and the working layer at the bottom of the furnace and the bottom of the furnace wall is corroded by slag, so magnesia-chrome bricks are generally used. And magnesia bricks. At present, refractories for soaking furnaces have also been expanded to monolithic refractories or prefabricated blocks. The furnace cover lining mostly uses high-strength lightweight castables, and the furnace wall castables use low cement and ultra-low cement Al2O3 content of 50% to 75% aluminum-silicon castables.

The following is a list of refractory materials for your reheating furnace, for reference only.

Grade Material Use part

JRL-1 clay brick furnace cover

JRL-2 high alumina brick burner and lower wall

JRL-3 magnesia brick bottom strength and furnace bottom

JRL-4 Silica Brick Exhaust Leg

JRL-5 clay insulation brick furnace wall

JRL-6 high aluminum castable furnace wall working layer

JRL-7 Diatomite Brick Insulation Layer

JRL-8 Thermal insulation castable insulation layer

JRL-9 Refractory Fiberboard Insulation Layer