- Time:Jul 27, 2023
Lime kiln is equipment used to produce lime, and the refractory bricks selected for lime kiln must be able to withstand high temperature and limestone erosion. The types of refractory bricks required for different parts of the lime kiln will vary. The following are common locations in a lime kiln and their corresponding refractory brick types:
1. Refractory bricks required for the lime kiln body
The main part of the lime kiln is subjected to high temperature and chemical erosion. Commonly used types of refractory bricks include magnesia chrome bricks (usually containing high alumina), high alumina bricks, synthetic spinel bricks, etc. These refractory bricks have good refractory performance, corrosion resistance and thermal shock stability.
2. Refractory bricks required for lime kiln walls
The wall on the inside of the kiln body is used to reflect and conduct heat. Generally, high alumina bricks or synthetic spinel bricks are used to construct the kiln wall to ensure high fire resistance and heat transfer characteristics.
3. Refractory bricks required for lime kiln roof
The top structure of the lime kiln withstands high temperature and impact. Common types of refractory bricks include synthetic spinel bricks, magnesia-chrome bricks, and high-alumina bricks with high refractoriness. These refractory bricks have high resistance to high temperature and cooling cycles.
4. Refractory bricks required for lime kiln bottom
To withstand lime and fuel loads, common types of refractory bricks include magnesia-chrome bricks and high-alumina bricks. These refractory bricks need to have certain refractory properties and slag resistance to cope with the high temperature and chemical attack in the kiln bottom area.
5. Refractory bricks required for lime kiln mouth and lime kiln door
The entrance and exit connecting the lime kiln to the outside world are usually constructed with refractory bricks. According to the specific process requirements, materials such as refractory bricks and ceramic fiber boards can be selected to meet the requirements of sealing performance, fire resistance and corrosion resistance.
It should be noted that the design and process of different lime kilns may be different, so when selecting refractory bricks, it is necessary to evaluate and select according to the specific application environment and process requirements, so as to ensure the selection of refractory brick materials that meet the standards and meet actual needs .
In recent years, basic refractory materials, such as magnesia-chrome bricks and magnesia-aluminum bricks, have also been used in the calcination zone of the shaft kiln.
