Estimated reading time: 2 minutes
High-temperature bricks, also known as refractory bricks, are crucial components in biomass burners due to their ability to withstand extreme heat and harsh conditions. Below is an analysis of their functions and cautions:
Functions of High-Temp Bricks in a Biomass Burner
- Thermal Insulation – They retain heat efficiently, improving combustion efficiency and maintaining stable temperatures.
- Protection of Burner Structure – They shield the outer metal shell from direct flame exposure, preventing warping or damage.
- Heat Reflection – Some refractory bricks reflect radiant heat back into the combustion chamber, ensuring complete fuel burn.
- Resistance to Abrasion & Erosion – They withstand mechanical wear from fuel agitation and ash movement.
- Chemical Resistance – They resist corrosion from alkali compounds, acids, and slag produced during biomass combustion.
- Structural Support – They maintain the burner’s shape and integrity under high thermal stress.
Cautions When Using High-temperature bricks
- Thermal Shock – Rapid temperature changes can cause cracking; preheating the burner gradually is recommended.
- Chemical Degradation – Certain biomass fuels (e.g., high-potassium or chlorine content) can react with bricks, reducing lifespan.
- Mechanical Damage – Impact from fuel loading or cleaning tools can chip or break bricks.
- Improper Installation – Gaps or weak joints can lead to heat leakage and structural failure.
- Material Selection – Using low-quality or incorrect refractory types (e.g., low alumina content for high-ash biomass) leads to premature failure.
- Maintenance Neglect – Cracks or erosion should be repaired promptly to avoid further damage.
Best Practices
- Use high-alumina or silicon carbide bricks for better durability.
- Ensure proper curing and drying before operation.
- Monitor for cracks, spalling, or chemical wear regularly.
Check the successful cases of VG Biomass Biomass Burner to check our applications…