FBC Extractive Mine Local Ventilation Fan is designed for negative-pressure local exhaust ventilation in underground mine workings.
It uses a single-stage axial configuration to extract contaminated air, dust and gas-bearing mine atmosphere through ventilation ducting.
Compared with FBCD contra-rotating fans, FBC is suited to lower and medium pressure exhaust duties where a single-stage fan can satisfy the required airflow and system resistance.
FBC is a single-stage axial local ventilation fan designed for negative-pressure exhaust ventilation in underground mine workings. It is used to extract contaminated air from headings, working areas and return-air routes through negative-pressure ventilation ducting.
FBC is used where contaminated mine air needs to be extracted from a localized underground area rather than fresh air being pushed toward the face.
The fan is normally connected to negative-pressure ventilation ducting so air, dust and gas-bearing mine atmosphere can be drawn away from the working area and discharged into the designated return-air system.
02 / Ventilation Principle
Extract Air Instead of Forcing Air
Working Area
Contaminated air is collected near the excavation or localized working zone.
Negative-Pressure Duct
The fan creates suction through the ventilation duct rather than supplying positive-pressure fresh air.
FBC Fan
Single-stage axial fan provides the airflow and pressure required to overcome duct-system resistance.
Discharge
Extracted air is discharged to the designated return-air or exhaust route.
03 / Construction
Single-Stage Axial Exhaust Configuration
01
Axial Impeller
Single-stage aerodynamic section for local exhaust duty.
02
Direct Drive
Compact fan and motor arrangement suitable for underground installation.
03
Steel Casing
Cylindrical welded casing for connection to mine ventilation ducting.
04
Mounting Options
Floor or suspended installation can be reviewed according to site layout.
Explosion-protection level, motor specification and mine-safety certification documents must be confirmed according to the destination market and project requirements.
04 / Reference Selection Range
FBC Series Performance Envelope
Use the following values for preliminary series screening. Final model selection should be confirmed from the required operating point and project configuration.
Airflow
0.75–7.83 m³/s / 2,700–28,188 m³/h
Total Pressure
121–3,581 Pa
Motor Power
1.1–30 kW
Typical Speed Range
1450 / 2900 rpm
Drive
Direct Drive
Reference Procurement Duty Examples
REFERENCE MODEL
POWER
PROJECT DUTY
VOLTAGE
FBC No.6.0
22 kW
≥250 m³/min at 2,000 Pa
660 / 1140 V
FBC No.7.5
45 kW
≥400 m³/min at 3,000 Pa
660 / 1140 V
These two rows are real project procurement examples rather than a complete QIYUE standard performance table. Final supplied model and motor configuration should follow the confirmed duty point.
05 / Product Difference
FBC or FBCD?
FBC
Single Stage
Extractive local ventilation where the required airflow and pressure can be satisfied by one axial stage.
FBCD
Contra-Rotating
Two-stage contra-rotating configuration for higher-pressure exhaust duties and higher ventilation-system resistance.
06 / Applications
Underground Local Exhaust Ventilation
Heading Faces
Extract contaminated air from localized underground excavation areas.
Return-Air Roadways
Support controlled removal of contaminated mine air.
Dust Extraction
May be integrated into local extraction systems where project conditions permit.
Replacement Projects
Replacement of existing FBC units based on old fan data and actual operating requirements.
07 / Selection Data
What to Send for FBC Selection
01
Required Airflow
m³/h, m³/min or m³/s.
02
Required Pressure
Known total pressure or duct-system resistance.
03
Duct Data
Diameter, length, material, bends and leakage condition.
04
Mine Atmosphere
Gas, dust and hazardous-area requirements.
05
Installation
Floor-mounted, suspended and available installation space.
06
Electrical
Voltage, frequency, phase and motor requirements.
07
Compliance
Required mine-safety, explosion-protection and destination-market documentation.
08 / Replacement Projects
Replacing an Existing FBC Fan
Many mine ventilation enquiries are replacement projects where the original design airflow and pressure are unavailable. Existing fan information can still provide a useful engineering starting point.
Nameplate: model, motor power, voltage, frequency and speed.
FBC identifies an extractive axial local ventilation fan. The letter C denotes the extractive configuration, while contra-rotating models add D and are identified as FBCD.
What is the difference between FBC and FBCD?
FBC uses a single-stage configuration. FBCD uses two contra-rotating stages and is generally used where greater pressure capability is required.
What airflow range does FBC cover?
The reference series envelope is approximately 2,700 to 28,188 m³/h.
Can FBC be selected when system pressure is unknown?
Yes. Send the duct diameter, length, bends, layout, existing equipment data and required airflow so the resistance can be reviewed.
Can an existing FBC fan be replaced from the old nameplate?
The existing model, nameplate, motor data, photos and installation dimensions can be used as the starting point for replacement review.
Is explosion-proof certification automatically included?
Required explosion-protection level and certification documentation should be confirmed for the specific project, mine and destination market before quotation.
FBC Extractive Fan Selection
Send Your Mine Ventilation Duty or Existing Fan Data.
Airflow · Pressure · Duct Diameter · Duct Length · Mine Conditions · Voltage · Frequency · Existing Fan Model · Quantity
