Powering Ventilation, Driving Progress — Mining ventilation fans, mine fans & mining blowers for underground mines, tunnel ventilation, and industrial sites.
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No. 001, Industrial Park, Nanjiao Town, Zhoucun District, Zibo City, Shandong Province, P.R.China
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BOFENG manufactures and supplies mine ventilation fans for underground mines and tunnel projects, including main, auxiliary and local ventilation fans for forcing and exhausting duties. These fans are used in underground metal, non-metal and coal mines, as well as tunnel projects requiring stable airflow, sufficient pressure and reliable continuous operation.
Available in axial-flow and centrifugal configurations, our mine ventilation fans can be matched to different mine conditions, ventilation duties, and installation requirements. Models are available for main airflow routes, local auxiliary ventilation, duct ventilation, exhaust air duties, and applications requiring standard or explosion-proof configurations.
To select a suitable mine ventilation fan, please share your required air volume, total pressure, power supply, installation layout, duct or tunnel conditions, and any explosion-proof or custom requirements. Our team can recommend an appropriate fan series, provide fan curves for review, and prepare a quotation based on your project duty.
Send airflow, pressure, voltage and site details for model recommendation and quotation.
The fan series below helps buyers and engineers compare mine ventilation fans by fan category, mine type, protection type, ventilation duty, and typical application. This makes it easier to identify a suitable series for main, auxiliary, intake, return-air, or exhaust ventilation duties.
| Series | Fan Category | Applicable Mine Type | Protection Type | Ventilation Duty | Typical Application |
|---|---|---|---|---|---|
| FKCDZ | Main Fan | Metal and non-metal mines | Standard | Main Exhaust | Mine-wide exhaust ventilation and higher-pressure return air duties. |
| FKZ | Main Fan | Metal and non-metal mines | Standard | Main Forcing | General main ventilation and stable mine-wide airflow delivery. |
| FK | Auxiliary Fan | Metal and non-metal mines | Standard | Auxiliary Forcing | Headings, development faces, and short-to-medium duct ventilation duties. |
| FKD | Auxiliary Fan | Metal and non-metal mines | Standard | Auxiliary Forcing | Longer ducts and higher-resistance local ventilation duties. |
| FBCDZ | Main Fan | Coal, metal, and non-metal mines | Explosion-Proof | Main Exhaust | Main exhaust ventilation where explosion-proof protection is required. |
| FBCZ | Main Fan | Coal, metal, and non-metal mines | Explosion-Proof | Main Exhaust | Main return air and exhaust ventilation with explosion-proof requirements. |
| FBD | Auxiliary Fan | Coal, metal, and non-metal mines | Explosion-Proof | Auxiliary Forcing | Longer duct ventilation and higher-resistance auxiliary airflow duties. |
| FB | Auxiliary Fan | Coal, metal, and non-metal mines | Explosion-Proof | Auxiliary Forcing | Standard local forcing ventilation in underground mine workings. |
| FBC | Auxiliary Fan | Coal, metal, and non-metal mines | Explosion-Proof | Auxiliary Exhaust | Local exhaust ventilation where explosion-proof protection is required. |
| FBCD | Auxiliary Fan | Coal, metal, and non-metal mines | Explosion-Proof | Auxiliary Exhaust | Higher-resistance auxiliary exhaust ventilation duties. |
Mine ventilation fan selection should be based on the actual duty point rather than model name alone. Buyers should confirm the required air volume, total pressure, static pressure, duct or tunnel resistance, installation position, power supply, altitude, operating environment, and whether explosion-proof protection is required.
For a faster recommendation, please provide the airflow and pressure requirements together with the mine type, ventilation duty, tunnel or duct layout, and voltage/frequency. Based on these details, we can help compare suitable fan series and provide fan curve data for review.
Selected surface and underground installations showing how our mine ventilation fans are positioned, connected and assembled for different mine layouts. Each configuration is developed around the required airflow, pressure, power supply and site conditions.
A surface-installed FKCDZ main fan serving mine-wide underground roadway ventilation, with a broad airflow and pressure range for a large iron-mine ventilation network.
Surface fan stations, field assembly, mine portals and underground auxiliary ventilation installations.
Engineering Guide
This guide explains what a mine ventilation fan is, how a mine ventilation fan works, how a complete mine ventilation system moves and distributes air, how main, booster and auxiliary fans differ, how axial-flow and centrifugal fans are compared, which duty, performance and site parameters matter, and what information is required for engineering fan selection.
A mine ventilation fan is an industrial fan used to supply intake air, remove return air or provide local airflow in underground mines and tunnels. Depending on its role and installation location, it may be classified as a main, booster, auxiliary or local ventilation fan and may operate in forcing or exhausting duty.
A motor rotates the fan impeller, and the moving blades transfer mechanical energy to the air, producing airflow and a pressure rise across the fan. This pressure rise enables the air to overcome resistance from shafts, roadways, ducts, bends, regulators and leakage paths. In forcing duty, the fan pushes air into the mine or ventilation duct; in exhausting duty, it draws return air toward an exhaust opening.
A mine ventilation system combines fans, intake routes, return routes, ventilation controls and monitoring devices to distribute air through the underground network. Fresh air enters through shafts, portals or intake airways, passes through working districts, and returns through designated return airways and exhaust openings.[1]
A typical underground ventilation system may include:
Depending on the ventilation design, a main fan may operate in an exhausting arrangement that draws return air out of the mine, or in a forcing arrangement that supplies air into the mine. Auxiliary fans should be installed at locations defined by the ventilation plan, supplied with adequate intake airflow, connected to suitable ducting and arranged to control recirculation.[2][5][7]
Video: Underground airflow routes and mine ventilation fans. Watch on YouTube ↗
Mine ventilation fans are commonly classified by the duty they perform and their position in the ventilation network. The three main groups are main ventilation fans, booster fans and auxiliary or local ventilation fans. Terminology and legal definitions can vary by jurisdiction and mine type.
01
Main ventilation fans, sometimes called primary fans, serve the principal mine ventilation circuit. They are commonly installed at a shaft, portal or surface fan station and may operate in forcing or exhausting duty. Installation, alarm, pressure-recording, backup and operating requirements must be checked against the rules that apply to the mine and jurisdiction.[2][3][4][5]
Typical considerations include:
02
Where permitted by the applicable jurisdiction and approved ventilation arrangements, a booster fan may be installed underground in series with the main ventilation system to increase pressure in a selected part of the network. Some jurisdictions restrict or prohibit underground booster fans for certain mine types, while others allow them subject to defined plans, controls and monitoring.[2][3][5]
Booster-fan design must consider:
A booster fan should not be selected as an isolated item. Its operating point, control logic, failure modes and emergency response must be evaluated as part of the complete ventilation network.
03
Auxiliary and local ventilation fans serve development headings, blind headings, production faces and other areas that are not adequately ventilated by the main airflow. They should be installed at a location defined by the ventilation plan, supplied with sufficient intake airflow, connected to rigid or flexible ducting, and arranged to minimize or prevent recirculation.[2][3][5][7]
Common auxiliary duties include:
Axial-flow and centrifugal fans use different aerodynamic arrangements. Neither type is automatically better for every mine. The correct choice depends on the required operating point, system resistance, stable operating range, efficiency, absorbed power, installation effects, noise limits, maintenance needs and available space.
| Comparison Item | Axial-Flow Fans | Centrifugal Fans |
|---|---|---|
| Airflow direction | Air enters and leaves generally parallel to the fan shaft. | Air enters axially at the impeller eye, moves radially through the impeller and is discharged through the casing. |
| Typical arrangement | Cylindrical casing with an inline airflow path. | Impeller with a volute or scroll casing and a defined inlet and discharge arrangement. |
| Common mine duty | Frequently selected for high-volume main and auxiliary ventilation duties. | Often considered for higher-pressure, high-resistance or layout-specific duties. |
| Installation characteristics | Compact along the airflow path, but still requires suitable inlet, outlet and transition conditions. | Requires suitable space for the casing and for the specified inlet and discharge orientation. |
| Capacity control | May use blade-angle adjustment, speed control or both, depending on the design. | May use speed control, inlet control or dampers, depending on the design. |
| Reversible operation | Available only on fan designs specifically engineered for reversible airflow. | Normally selected for a defined airflow direction unless specially engineered. |
| Final selection basis | Required airflow, pressure basis, fan and system curves, operating range, air density, efficiency and site conditions. | Required airflow, pressure basis, fan and system curves, operating range, air density, efficiency and site conditions. |
Selection note: General fan-family comparisons are only a starting point. A final model should be selected from verified performance data at the required airflow and pressure, not from fan type or motor power alone.
Engineering fan selection is based on the required duty point, ventilation-system characteristics, operating range and site conditions. The following parameters should be confirmed before a fan model is selected.
The volume of air delivered by the fan, commonly expressed in m³/s, m³/min, m³/h or CFM. Airflow demand should be defined for the complete mine, district, heading or duct system being served, with the operating condition or reference condition stated where relevant.
Fan static pressure is defined according to the applicable test standard and test configuration. In simplified terms, it is the fan total-pressure rise less the outlet velocity-pressure component. Static pressure values should be compared only when the same definition and reference arrangement are used.
Fan total pressure is the difference between total pressure at the fan outlet and total pressure at the fan inlet, using the reference planes and test configuration defined by the applicable test standard.
Fan static or total efficiency is the corresponding air power divided by fan shaft power. Overall package efficiency may also account for motor, transmission and VFD/VSD losses. A stable duty near the efficient operating range can reduce lifecycle energy use.
Motor rating, rotational speed, voltage, frequency, duty rating, starting method and any required service margin must match the selected duty and the site's electrical conditions. Maximum absorbed power should be checked across the full proposed operating range, not only at the nominal duty point.
Noise and vibration requirements influence the need for silencers, flexible connections, isolation bases, structural checks, balancing, monitoring and maintenance planning.
A fan curve shows the relationship between airflow and pressure at a defined fan speed, blade setting, air density and test configuration. The system resistance curve represents the pressure required by the mine, roadway or duct network at different airflow rates.
The expected operating point occurs where the fan curve intersects the system resistance curve. The proposed model should operate in a stable, controllable and efficient part of its performance range. Fan-performance testing may be referenced to ISO 5801:2017 together with Amendment 1:2025, subject to the project's specified test standard and acceptance criteria.[10]
Published curves apply to stated conditions. Altitude, temperature, humidity and gas composition can change air density and therefore affect pressure, absorbed power and motor loading. Inlet and discharge conditions, bends, screens, silencers and transitions can also create installation effects that should be considered during final selection.
Where speed control is proposed, fan affinity relationships may support preliminary review, but the final control range, motor loading and stable operating limits should be checked against manufacturer data.
Important: Motor power alone is not sufficient for fan selection. Fans with the same motor rating may produce different airflow, pressure, efficiency, stability and noise characteristics.
An engineering selection process should connect the ventilation requirement, system resistance, fan performance data, site conditions and safety requirements. The following five-step structure can be used for preliminary model review.
Confirm what the fan must ventilate and how the airflow will be used.
Calculate or verify the pressure required to deliver the target airflow.
Compare suitable fan families and equipment arrangements.
Check the proposed model against the expected system curve.
Match the fan package to the actual installation and compliance requirements.
Send your airflow, pressure basis, voltage, frequency, ventilation duty, site conditions and installation details. Our team can prepare a preliminary fan selection, performance data and a proposed configuration for technical review.
Protection, redundancy, monitoring and operating arrangements depend on the mine type, fan duty, installation location, hazardous-area classification and applicable national and mine-site requirements. The final arrangement should be reviewed by the mine ventilation, electrical and safety teams.
Coal mines and other sites with potentially explosive atmospheres may require suitably approved or certified fan packages, motors, electrical equipment, sensors and control components. The required protection concept depends on the mine type, installation location, equipment group or category, gas or dust group, temperature classification, ambient range and applicable jurisdiction. ATEX is the European Union market framework, while IECEx is an international certification system; project acceptance must still be confirmed locally.[8][9]
Certification claims should be checked against the exact supplied equipment, certificate scope, protection concept, equipment marking, permitted ambient range and any conditions of use.
Depending on the ventilation plan and applicable requirements, a main fan station may include duty and standby fans, independent or alternative power arrangements, automatic alarms, pressure recording, changeover provisions or emergency operating procedures. These measures are jurisdiction- and risk-specific and should not be assumed to be identical for every mine.[2][3][5][7]
The fan monitoring package may include fan speed, motor current or power, bearing temperature, vibration, static or differential pressure, airflow, blade or damper position and equipment status. The wider mine ventilation system may also monitor gas concentration, temperature, pressure and airflow at selected underground locations. Alarm, trip, data-recording and communication functions should be defined by the ventilation plan, risk assessment and applicable rules.[2][5][7]
Starting, stopping, reversing or changing the speed of a fan can alter airflow distribution throughout the ventilation network. Planned outages, testing, maintenance and control changes should therefore follow approved mine procedures, risk assessments, equipment-isolation requirements and communication protocols. The ventilation consequences of a fan failure or control change should be assessed before implementation.[2][3][5]
Compliance note: This page provides general engineering information and does not replace a mine ventilation survey or network study, legal review, hazardous-area assessment, approved ventilation plan, equipment certification review or site-specific operating procedure.
Mine ventilation fans are used across underground mining, tunnel construction and related dust or fume control duties. The required fan configuration depends on the ventilation network and site conditions.
Main and auxiliary ventilation for coal-mine airflow routes, headings and local work areas, including methane and coal-dust risk controls, monitoring and suitably approved or certified equipment where required.[1][2][5][8]
Main, booster where permitted, and local ventilation for shafts, ramps, declines, development headings, stopes and production districts in metal and non-metal mines.[3][6][7]
Duct ventilation for road, rail, hydropower, utility and other underground construction projects, including long-distance forcing or exhausting arrangements and staged ventilation as the heading advances.[7]
Ventilation and extraction arrangements used with suitable collection or treatment equipment to control airborne dust, process fumes and equipment emissions.
The following are selected international and jurisdiction-specific sources for mine ventilation, fan safety, explosion protection and fan-performance testing. They are not a complete or cumulative set of legal requirements. Confirm the current edition and the rules applicable to the mine type, project location, equipment installation and procurement specification before design, selection or compliance assessment.
International Labour Organization — Safety and Health in Underground Coalmines: ILO Code of Practice. International guidance covering ventilation and other major underground coal-mine hazards. It does not replace national legislation or an approved mine ventilation plan. View source
United States — 30 CFR Part 75, Subpart D: Ventilation. Mandatory U.S. requirements for underground coal mines, including main mine fans, auxiliary fans, ventilation controls, fan operation, monitoring and approved ventilation plans. View source
United States — 30 CFR Part 57, Subpart G: Ventilation. Mandatory U.S. requirements for underground metal and non-metal mines, including main, booster and auxiliary fan operation, planned fan shutdowns and control of air recirculation. View source
Great Britain — The Mines Regulations 2014, Regulation 43: Ventilation. Requires a suitable below-ground ventilation system and appropriate monitoring and control arrangements at mines within the regulation's scope. View source
Australia, Queensland — Coal Mining Safety and Health Regulation 2017. Includes requirements concerning auxiliary and booster fans, methane monitoring, prevention of recirculation, fan operating procedures, equipment-condition monitoring and continuous static-pressure recording. View source
Canada, Ontario — Regulation 854: Mines and Mining Plants, and Ventilation Systems in Mines and Mining Plants. Ontario requirements and official guidance for mechanical ventilation systems in underground mines. View regulation View guidance
New Zealand — Ventilation in Underground Mines and Tunnels: Approved Code of Practice. Practical guidance for coal and metalliferous underground mines and tunnels under construction, including ventilation planning, fan arrangements, monitoring and operating controls. View source
South Africa — Guideline for the Compilation of a Mandatory Code of Practice for the Prevention of Flammable Gas and Coal Dust Explosions in Collieries. Official mine-safety guidance covering good ventilation practices and controls for flammable-gas and coal-dust ignition and explosion risks in collieries. View source
Explosion Protection — European Commission ATEX Directive 2014/34/EU and the IECEx Certified Equipment Scheme. ATEX defines the European Union framework for equipment placed on the EU market for potentially explosive atmospheres. IECEx provides an international third-party certification system for Ex equipment; acceptance remains subject to the destination country's rules and project specification. View ATEX source View IECEx source
ISO 5801:2017 — Fans: Performance Testing Using Standardized Airways, with ISO 5801:2017/Amd 1:2025. International reference for standardized fan-performance test procedures, measurement uncertainty and permitted conversion of test results within the standard's stated limits. View ISO 5801:2017 View Amendment 1:2025
Share the required airflow, static or total pressure basis, voltage, frequency, mine type, ventilation duty, installation layout, site conditions and protection requirements for preliminary fan selection, technical review and quotation.
Explore completed mine ventilation fan projects, including finished equipment, pre-shipment inspection, packaging, loading, and dispatch preparation. These real project records demonstrate our manufacturing quality, delivery readiness, and reliable order fulfillment.
Selected certificates include CE, ISO 9001, ISO 14001 and ISO 45001. Additional documents such as MA/KA mining product certificates, patent certificates, inspection reports and technical files can be provided upon request for project review and supplier evaluation.
