Application of refractory castables in high temperature kiln

With the increase in temperature and service life of various high temperature furnaces and thermal equipment, refractory castables are the most widely used in the production and use as unshaped refractories. Today, with the rapid advancement of industrial technology, there are many types of refractory castables. The advantages of using refractory castables compared with refractory bricks are simple process, energy saving, low cost and easy mechanized construction. It has been widely used in various types of thermal equipment such as cement, steel, glass, and electric power. Refractory castables manufacturer Tianyang refractory materials introduces you to several kinds of refractory castables commonly used in high temperature kiln furnaces?

 

First, the application of refractory castables in cement rotary kiln.

 

In the new dry process cement rotary kiln, refractory castables have been widely used. According to the different working environment of the kiln, the applied refractory castables are ordinary refractory castable, low cement refractory castable, ultra low cement refractory castable, cementless refractory castable, steel fiber refractory castable, explosion-proof refractory castable, Anti-crust refractory castables, phosphate refractory castables, alkali-resistant castables, thermal insulation castables, in addition to new castables such as self-flowing refractory castables.

 

Second, the application of refractory castables in glass melting furnaces.

 

Due to the working environment requirements of the glass melting furnace, the applied refractory castables should have the characteristics of high temperature resistance, strong resistance to glass corrosion, and low porosity. The main refractory castables used are fused silica castables, corundum castables, lightweight mullite castables, zircon casts and the like.

Third, the application of refractory castables in the metallurgical industry.

 

1. Refractory castable for iron making system

 

In the ironmaking system, there are many refractory castables for the blast furnace tapping trench, and ASC refractory castables are generally used. ASC castables are generally low-cement or ultra-low cement castables, mainly composed of Al2O3 aggregate, SiC, carbon, refractory cement and various admixtures. Different materials are used, and the materials are different, such as in the main ditch, slag ditch, and branch ditch.

 

2. Refractory castable for hot metal pretreatment

 

1) Refractory castables In the application of ladle, aluminum SiC carbonaceous castables are mainly used in the bottom of the furnace and in the molten pool and slag line.

 

2) The spray gun is an important device for pretreatment of molten iron. Now the refractory material for the spray gun is mostly casted with castables, and the material is mainly Al2O3-SiO2. The overall spray gun made of the castable has the characteristics of uniform organization, no seam, good thermal shock resistance and long service life.