Which refractory bricks to choose for cement rotary kiln preheater

In the cement rotary kiln preheater, due to the harsh working environment such as high temperature and chemical erosion, the following types of refractory bricks are often used:

1. High-strength alkali-resistant brick

Alkali-resistant bricks are made of low-alumina refractory clay as the main raw material. This product adopts the scientific phase structure of high-temperature ceramic crystals to seal the open pore channels of the product, so as to resist chemical erosion and prevent the penetration and deposition of material cracking. The product has strong corrosion resistance, erosion resistance and thermal shock resistance, and is widely used in cement kiln preheating system.

2. High alumina brick

High alumina refractory bricks are refractory materials made of kaolin as the main raw material. It has high refractoriness and slag erosion resistance, and is suitable for high temperature areas of cement rotary kiln preheaters.

3. Calcium silicate board

To consider the heat loss of the preheater, it is necessary to paste the calcium silicate board for insulation treatment.

4. Silicate refractory brick

Silicate refractory brick is a commonly used refractory material, which is suitable for different areas of cement rotary kiln preheater. It has good refractoriness and slag corrosion resistance, and can withstand high temperature and thermal shock stress.

5. Magnesia chrome brick

Magnesia chrome refractory brick is a composite material composed of magnesium oxide and chromium oxide. It has excellent high temperature resistance, alkali resistance and corrosion resistance, and is suitable for high temperature and corrosion environment of cement rotary kiln preheater.

In addition, in the cement rotary kiln preheater, different combinations of refractory bricks are often used according to the working conditions and temperature requirements of different areas to achieve the best durability and performance. Therefore, when choosing refractory bricks, the refractoriness, corrosion resistance, mechanical strength and other parameters of the material should be considered comprehensively, and the manufacturer's suggestions and experience should be referred to.