Burner Set

Function

The burner must deliver a stable, well-shaped flame that does not impinge on the drum shell or aggregate bed. Correct air-to-fuel ratio control ensures complete combustion, minimising fuel cost and stack opacity. An unstable or incorrectly set burner produces uneven aggregate temperature across the drum cross-section, blue-smoke emissions, refractory overheating, and excessive fuel consumption — all of which directly affect production economics and, where monitored, regulatory compliance with emission standards.

Construction & quality

Burner gun body: stainless steel and heat-resistant cast iron in the flame zone; mild steel for the outer housing. Combustion air register: adjustable swirl vanes, cast alloy construction. Fuel lines and manifold: seamless steel tube, rated 25 bar working pressure. Ignition electrodes: ceramic-insulated, with Inconel or stainless steel tips. UV/IR flame sensor mounting boss is integral to the gun body. An insulated outer jacket on the gun barrel reduces heat loss at the burner tube. All internal surfaces in the flame zone are lined with high-temperature ceramic fibre or castable refractory rated to 1 200°C continuous.

When to replace

• Visible flame instability — lifting, pulsing, or extinguishing at stable load settings
• Blue or black smoke at the stack indicating incomplete combustion or excess fuel
• Increasing fuel consumption required to achieve the same aggregate discharge temperature
• Burn-through or deformation visible on the burner tip, register vanes, or gun body on inspection
• Ignition failure requiring multiple re-try cycles on cold-morning startup