Higher Capacity or Air Temperature | 4821 Magna-Flame ™ Burner
Bulletin 4575 Page 14
exit velocities, resulting in increased convective heat transfer and at the same time entrainment of surrounding furnace gases resulting in low NOx emissions. For extremely low NOx applications, consult Fives North American Combustion, Inc. about combining the R-version burner with low NOx injection (LNI) technology. CONSTRUCTION 4821 Bodies featuring round mounting flanges are fabricated heavy-gauge carbon steel and lined with ceramic fiber and castable refractory. Internal parts are heat-resistant alloy and the stabilizing disc is faced with high alumina refractory.
For applications that require higher capacities or higher preheated air temperatures than a standard HiRAM®, consider using a 4821-R burner. HOT AIR 4821 Hot Air Magna-Flame™ Burners operate with hot air from recuperators or other heat recovery devices to save energy on furnaces, such as steel reheat, aluminum melting, process heaters, and other high temperature applications. Normal capacities are rated at 1000°F (538°C) air at a pressure of 10"w.c. (25 mbar). HIGH VELOCITY For applications that benefit from high velocity, such as aluminum melters and holders, steel reheat furnaces or others, the 4821 is available in an “R-version”. The refractory tile shape of the R version is reduced (converging) to produce high hot-gas
For capacities less than the HiRAM® consider a 4441 Tempest burner.
COMBUSTION AIR CAPACITY, scfh (for Btu/h HHV capacity, multiply scfh by 100)
Flame Dimensions at 1000°F air Length Diameter 2
Burner
Jet Air, scfh
Standard
Designation
1000°F
60° Air
at 60°F
at 10"w.c .
at 10"w.c.
with 27.7"w.c.
Tile
Reduced Port Tile
4821-9
4821-9-R
34,000 40,000 53,000 78,000 106,000 134,000 172,000 215,000 260,000
55,000 67,000 89,000 130,000 177,500 225,000 288,000 360,000 435,500
1,130 1,850 1,850 4,500 4,500 6,700 8,600 10,750 10,750
5' 5' 7' 9'
2' 2' 2' 3' 4' 4' 5' 5' 5'
4821-10-A 4821-10-B
4821-10-AR 4821-10-BR 4821-12-R 4821-14-R 4821-16-R 4821-18-R 4821-20-R 4821-22-R
4821-12 4821-14 4821-16 4821-18 4821-20 4821-22
10' 13' 16' 17' 20'
Subtract 10% from flame dimensions shown for reduced port tile "R" version. 2
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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