In this Calciner Tempering installation, we retrofitted backward-curved blowers to replace our customer’s existing fans for increased efficiency and longer fan life. Using 300 HP customer-supplied motors, we incorporated a flexible coupling drive, unitary base, and pie-split housing for easier maintenance access to the fan wheel and shaft.
The high-efficiency backward-curved blower has a narrow wheel and housing to move lower air volumes at higher static pressures commonly occurring with induced draft applications requiring combustion air.
![](https://blog.airprofan.com/wp-content/uploads/2023/06/backward-curved-blower.jpg)
Calcination operations processing finely divided solids like phosphate and requiring tightly-controlled temperatures or the elimination of exhaust gases rely on rotary calciners to transfer heat. The calciner has a rotating drum inside an externally-heated furnace. You may know this as an indirect kiln.
Performance: 15,000 cfm airflow @ 96” wg static pressure @ 0.07 lb/ft^3 inlet air density
Product Type | BCLS (backward curved) |
Size | 383 (38.3” diameter wheel) |
Class | 5 |
Arrangement | 8 (direct coupled drive) |
Horsepower | 300 HP |
Max Design Temperature | 150°F |
If you have a similar project, contact an application engineer to discuss it in more detail. For more information, read about high-efficiency backward-curved product line.