Causes of Large Area Fracture of Lime Kiln Refractory Bricks

Large-scale fractures of lime kiln refractory bricks may have the following reasons:

一. Reasons for large-area fractures of lime kiln refractory bricks

1. Thermal stress: The internal temperature of the lime kiln is high and there is significant thermal stress. When the refractory brick is subjected to rapid temperature changes or the temperature gradient is too large, it will cause thermal stress concentration, which will cause the refractory brick to break.

2. Uneven sintering: In the manufacturing process of refractory bricks, if the sintering process is uneven or there are local defects, it may cause uneven stress distribution inside the bricks and cause fractures.

3. Physical impact: In the process of operation and maintenance, if a severe physical impact is applied to the refractory bricks, such as impact, vibration, pressure, etc., the bricks will be damaged and broken.

4. Chemical erosion: There are chemical reactions and corrosive gases at high temperature in the lime kiln, which may cause chemical erosion on the surface of the refractory brick, resulting in its performance degradation and eventual fracture.

5. Structural design problems: Structural design problems of the lime kiln, such as poor support, unreasonable gaps reserved for bricks, etc., may cause extra stress on the refractory bricks, resulting in fracture.

二. How to avoid large area fracture of refractory bricks

1. Select a high-quality refractory brick material and ensure proper installation and maintenance according to the manufacturer's recommendations.

2. Control the temperature change rate inside the lime kiln to avoid rapid temperature changes and excessive temperature gradients.

3. Ensure that the sintering process of the bricks is uniform, and pay attention to inspect and deal with any defects in the manufacturing process.

4. Avoid physical shock and vibration, and take appropriate protection and support measures to ensure stable operation of the equipment.

5. Clean up and control the chemical corrosive gas in the lime kiln to reduce the erosion of refractory bricks.

6. Evaluate and optimize the structural design of the lime kiln to ensure a reasonable support structure and brick layout.

When encountering the problem of large-scale fracture of lime kiln refractory bricks, it is best to consult professionals for inspection and analysis to determine the specific cause and provide corresponding solutions.