Pulverized coal burner:

Mainstream type, suitable for cement kilns, requires a pulverized coal preparation system.

Key requirements: Pulverized coal fineness (80μm sieve residue <15%), volatile matter >25%.

Gas burner (natural gas, liquefied petroleum gas, etc.):

Clean and efficient, with low NOx emissions, but requires a stable gas source and is more expensive.

Multi-fuel burner:

Can mix pulverized coal, gas, biomass, or waste (such as tire-derived fuel (TDF)), enhancing fuel flexibility.

Classification by structural design:

Three-channel burner (mainstream):

From the inside out, it is divided into: central air flow (flame stabilization), coal air flow (fuel transportation), and external axial air flow (flame shape control).

Advantage: Flexible flame adjustment, suitable for high-volatile coal.

Four-channel burner:

Adding a swirl air channel enhances mixing between pulverized coal and air, reduces the primary air ratio (to <6%), and improves thermal efficiency.

Low NOx Burner:

Using staged combustion, flue gas recirculation (FGR), or pre-combustion chamber technology, NOx emissions can be reduced to <500mg/Nm³.