Lafa Multi-channel Low-NOx Burners
Burner Structural Design
Burner Nozzle Design
Central Air Channel:Stabilizes flame root, cools nozzle tip and prevents coking blockage.
Inner Swirl Air Channel:Creates strong vortex to fully mix coal powder and air for complete combustion.
Coal Air Channel:Transports pulverized coal evenly into combustion zone.
Gas Channel:Delivers natural gas, industrial by-product gas and other gaseous fuels.
Outer Swirl Air Channel:Strengthens mixing effect, lowers local high temperature to reduce NOx.
Axial Flow Air Channel:Controls flame length and rigidity, avoids scattered or offset flame.
Burner Working Principle
The burner applies multi-channel staged air distribution and high-speed vortex mixing combustion technology. It has four independently adjustable air passages: central air, coal air, swirl air and axial air, enabling fast air-coal mixing and low-temperature combustion for energy saving, stable kiln operation and low NOx output.
Comprehensive Performance Advantages
Optimized structure and advanced combustion technology upgrade 8 core performances, matching modern low-carbon cement production standards.
Steplessly adjust flame status, balance kiln temperature, stabilize clinker quality.
High-alloy nozzle withstands high-temperature scour and extends service life.
Modular wearing parts for fast replacement and short downtime.
Fit 2000–12000 t/d lines, available for new projects and kiln retrofits.
Less maintenance shutdowns, improving overall line operation efficiency.
Coordinated Air Duct Combustion Mechanism
The unit consists of four independent air channels: central air, coal powder air, swirl air and axial air, with adjustable parameters for each channel. High-speed swirl air fully disperses coal particles to boost mixing with high-temperature secondary air and greatly improve coal burnout rate. Axial air precisely controls flame length and rigidity to prevent soft, scattered and offset flames. Central air stabilizes the flame root and continuously protects the nozzle head from high-temperature ablation.
Low-Temperature Low-NOₓ Combustion Principle
Staged air distribution breaks up local high-temperature zones, lowers peak combustion temperature and restrains thermal NOx formation.
The whole system delivers rapid mixing, complete burnout, low-temperature NOx control and adjustable flame. It stabilizes clinker quality, ensures consistent continuous production, and effectively cuts coal consumption and flue gas emissions.
Company Advantage
Integrated supply of full kiln head thermal equipment for all overseas EPC new & revamp projects, cutting cross-supplier coordination cost.
References across SEA, Central Asia, Africa & Middle East; perfectly fits mainstream kiln brands with minor civil modification.
Competitive pricing for burners & wear spares, ultra-short reliable production cycle, full standardized export documents fully supplied for hassle-free customs clearance
CN & EN remote support, on-site commissioning engineers, systematic operation & maintenance training.
Complete international certifications, customized low-NOx solutions to meet local emission standards.
Wear-resistant construction cuts fan power & refractory consumption, extending spare part service life.
Industry Pain Point Solutions
Module Description: Targeting six persistent industry defects of traditional cement kiln burners including abrasion, cracking, coking, refractory brick falling, ash accumulation and air leakage, we carry out targeted structural optimization to realize long-term stable operation.
Adopt high-chromium wear-resistant alloy and thermal spray reinforcement process with streamlined anti-scour runners to mitigate high-speed coal powder impact abrasion, multiply nozzle service life and cut spare part replacement & shutdown losses.
The concentrated and regular flame avoids sweeping kiln coating and scouring kiln lining, eliminating local high-temperature ablation and airflow impact. It well protects refractory bricks against loosening and falling to stabilize long-term kiln system conditions.
Optimized thermal shock resistant structure and dedicated heat dissipation air channels release thermal expansion & contraction stress under high temperature, thoroughly eliminating nozzle deformation, cracking and air leakage failures, and improving high-temperature resistance and durability of equipment.
Carbon deposition prevention flow guide plus continuous purging by central air discharges residual coal powder in real time to avoid coking and nozzle blockage, maintaining smooth combustion and stable flame all the time.
Double-layer wear-resistant reinforced coal channel with optimized material conveying path reduces particle friction and scour, preventing channel abrasion, air leakage and turbulent airflow to boost equipment operational reliability.
High-thrust strong entrainment airflow design ensures smooth kiln air circulation without dead zones, preventing ash buildup around kiln mouth and burner, keeping unobstructed combustion channels and high-efficiency production continuously.
Equipment Model
| Product Name | Model | Design Ability (T / D) | Coal Injection Volume (t / h) | Pulverized Coal Wind Speed (m / s) | External Axial Wind Speed (m / s) | Swirl Wind Speed (m / s) | Vortex Wind Speed (m / s) |
|---|---|---|---|---|---|---|---|
| Energy-saving burner | JL-1200 | 1200 | 3-5 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-2000 | 2000 | 4-6 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-2500 | 2500 | 5-8 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-3000 | 3000 | 6-9 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-3200 | 3200 | 6-9 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-4000 | 4000 | 8-12 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-4500 | 4500 | 9-15 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-5000 | 5000 | 10-12 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-6000 | 6000 | 10-18 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-7000 | 7000 | 12-24 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-8000 | 8000 | 14-28 | 25-30 | 350-460 | 220-280 | 140-180 |
| Energy-saving burner | JL-10000 | 10000 | 18-30 | 25-30 | 350-460 | 220-280 | 140-180 |
客户评价
After switching to Lafa low-NOx burner, we get well-shaped mild flame with zero ash accumulation at kiln inlet. The service life of refractory bricks is doubled. The wear-resistant nozzle requires little coking cleaning for over half a year. NOₓ emission keeps meeting local standards with much lower operation cost. Their engineers provide fast remote support all the time.
Askar TuleyevPlant General ManagerWe adopted complete kiln head thermal equipment from Lafa. One-stop supply saves us tons of coordination work with different vendors. The lead time is half of western brands. Full export documents guarantee smooth customs clearance. On-site engineers finished commissioning with one successful ignition, and spare parts delivery is reliable.
Kofi MensahThermal System Project DirectorOur old imported burner suffered frequent nozzle cracking and coking blockage, causing constant shutdowns. After revamping with Lafa burner, the optimized cooling channel and anti-coking design fully solved these troubles. Stable air-coal ratio improves clinker output and quality, with far better cost performance.
Wijaya PratamaKiln Operation SuperintendentOur plant co-fires heavy oil and RDF waste. Lafa burner works perfectly with multiple fuels without flame deviation or backfire. Staged combustion cuts consumption of denitrifying agent greatly. The easy maintenance procedures are friendly for all operators.
Karim Al-SaudProduction Technical ManagerWe have cooperated for 3 years and equipped Lafa burners on all our production lines. Low failure rate, sufficient stock of wear spares and fast delivery. Complete Chinese & English O&M manuals reduce our technical reliance, showing obvious advantages on total lifecycle cost.
Marcus HendersonGlobal Procurement Director
Maintenance Cleaning Guide
Standardized full O&M procedures covering daily inspection, regular cleaning, periodic maintenance and shutdown protection. Easy to implement, effectively extending service life of equipment and ensuring stable kiln line operation.
Routine Daily Maintenance
Monitor operational parameters including flame profile, air pressure and air volume daily, and identify abnormalities such as skewed flame, backfire, air leakage and smoke emission.Periodically check the flexibility of seals, control valves and movable mechanisms, and tighten loose components promptly to maintain steady equipment operation.
Regular Cleaning Work
Remove coke deposits and dust from nozzle tips, air duct inlets and flame stabilizers every 7–15 days to prevent nozzle clogging and turbulent airflow. Clear accumulated dust inside all air ducts thoroughly every month to ensure homogeneous mixing of air and pulverized coal.
Periodic Overhaul & Servicing
Conduct comprehensive shutdown overhaul every 3–6 months. Inspect wear levels of consumable parts like nozzles and wear-resistant liners, and replace deteriorated spare parts in a timely manner. Calibrate air supply systems and flame parameters, optimize air-coal ratio, and restore the burner’s optimal combustion performance.
Protection for Long-term Shutdown
Fully clean dust and residual coke inside air ducts and nozzles before long-term shutdown. Implement anti-rust and dustproof treatments, seal nozzle outlets and pipeline joints, and store the unit in a dry and ventilated area. Avoid corrosion from dampness and dust blockage to guarantee stable restart performance.
Our burners suit all 2000t/d–12000t/d dry-process cement kilns. They fully match mainstream kiln brands including FLSmidth, Fives, KHD, Sinoma and CITIC. Revamp projects require minimal civil modification without large-scale reconstruction of kiln head casting foundations, applicable for both new and existing production lines.
It supports mixed combustion of coal petcoke, natural gas, heavy oil, biomass and RDF waste fuels. Custom air channel structures are available based on local low-cost waste materials to greatly cut coal consumption cost.
Custom low-NOₓ solutions ranging from 80 to 300mg/Nm³ are available. With staged combustion and flue gas recirculation low-temperature technology, it meets emission standards for most developing countries without extra denitrification equipment. For strict EU standards, it sharply reduces investment on SCR/SNCR systems.
The uniform, mild flame eliminates overheating hotspots and stabilizes sintering zone temperature without compromising clinker strength or output. It also lowers erosion on refractory bricks to extend lining service life.
Standard burners take 20–35 days for production, while key wear spares are in stock. Full documents including certificate of origin, material test reports, CE & ISO certificates, English drawings and operation manuals are provided to support smooth customs clearance.
Our price is only 50%–70% of Western brands. Wear parts last twice as long, and the low primary air ratio cuts long-term fan power consumption. Fast spare part delivery minimizes shutdown loss for lower total lifecycle cost.
Nozzles adopt high-chromium alloy with thermal spray coating, serving 8–16 months under normal working conditions. Anti-coking guide structure and independent cooling air channels fundamentally avoid abrasion, coke buildup and high-temperature cracking.
Standardized, easy-to-implement O&M procedures: daily parameter monitoring, coke cleaning every 7–15 days and full shutdown overhaul every 3–6 months. Complete English maintenance manuals plus online & on-site operator training are offered.
We dispatch professional engineers to Southeast Asia, Central Asia, Africa, the Middle East for installation guidance, kiln heating, ignition commissioning and fuel optimization. Chinese & English remote flame adjustment support is available.
One-stop full package supply is available, including rotary kiln burners, calciner burners, fuel pipelines, primary air fans, control cabinets and ignition systems. It fits all EPC projects and avoids complicated coordination with multiple suppliers.