What are the refractory bricks for shaft kiln

A shaft kiln is a common type of kiln used to produce materials such as lime and cement. In shaft kilns, refractory bricks are widely used as lining and insulation layer to withstand high temperature and chemical attack. The following are some common refractory bricks for shaft kilns:

1. High alumina refractory bricks: High alumina refractory bricks are made of kaolin, silicon materials and high alumina powder as the main raw materials. It has excellent high temperature resistance, corrosion resistance and mechanical strength, and is suitable for the inner lining of shaft kilns.

2. Plant ash brick: Plant ash brick is a traditional refractory material for shaft kiln, which is made by mixing plant ash and binder. It has good erosion resistance and refractory performance in shaft kilns, and is beneficial to the roasting process of limestone.

3. Dead-fired magnesia bricks: Dead-fired magnesia bricks are made of high-purity magnesia as the main raw material. It has excellent alkali resistance, erosion resistance and high temperature stability, and is suitable for lining and insulation of shaft kilns.

4. Silicate refractory brick: Silicate refractory brick is a refractory material made of aluminum silicate and calcium silicate as the main components. It has good high temperature stability and corrosion resistance, and is widely used in the inner lining and insulation layer of shaft kilns.

5. Lightweight insulation brick: Lightweight insulation brick is made of lightweight aggregate and binder, which has low thermal conductivity and good thermal insulation performance. It can be used as an insulation layer for shaft kilns, reducing energy loss and improving thermal efficiency.

6. High-alumina castable: high-alumina castable is a refractory material made of high-alumina bauxite as the main raw material. It has good high temperature resistance and corrosion resistance. It is often used at the bottom of shaft kilns or other places that require high refractory performance part.

Each type of refractory bricks for shaft kilns has specific characteristics and scope of application. The selection of suitable refractory bricks should comprehensively consider the process requirements, service conditions, production scale and other factors of the shaft kiln, and ensure the quality and installation details of the refractory bricks to ensure Uptime and durability of shaft kilns.