Iron and steel metallurgy industry

Shanxi Anyun Fan Co., Ltd. | Explosion‑proof and High‑Temperature, Wear‑Resistant Fan Solutions for the Iron and Steel Metallurgy Industry
Leveraging the industrial cluster advantages of Shanxi’s steel, coking, and metallurgical sectors, Anyun explosion-proof ventilation equipment is tailored to meet the demanding operating conditions across the entire process—sintering, blast furnaces, converters, coking, rolling mills, and underground metallurgical applications. Specifically designed for steel plants facing high temperatures, heavy dust, flammable and explosive coal gas, and corrosive acidic exhaust gases, these specialized fans address three core requirements: explosion-proof safety, wear and heat resistance, and long‑term continuous operation.

I. Compatible with the main types of fans used throughout the entire metallurgical process (primarily the yellow explosion-proof series, as shown in on-site photos).
1. FBD Flameproof Counter-Rotating Axial Fan (Core Finished-Product Model for the Plant Area)
1. Core Explosion-Proof Configuration
The entire unit is certified with both Ex d II BT4 and mining‑grade Ex d I explosion‑proof ratings, featuring a fully flameproof sealed motor. Its aluminum alloy blades are antistatic, effectively preventing metal‑to‑metal friction sparks. With no ignition sources anywhere in the system, it is suitable for use in highly flammable and explosive environments such as blast furnace gas, coke oven raw gas, and coal‑dust–gas mixtures.
2. Metallurgical Sub‑Applications
- Forced ventilation is provided in the underground gas corridors and coke oven basements of the coking plant to dilute leaked gas and prevent the accumulation of flammable gas that could lead to explosions.
- Long-distance ventilation for underground raw-material roadways and ore‑bin tunneling faces in metallurgical facilities;
- Temporary displacement of combustible gases in the enclosed maintenance areas of blast furnaces and converters;
- Comprehensive ventilation and air exchange throughout the gas pressurization station and the gas pipeline gallery.
3. Product Advantages
Dual-stage counter-rotating design delivers high wind pressure and long‑range air delivery; supports variable‑frequency speed control to match the 24‑hour continuous production load of steel mills; features low vibration and low noise, and can be paralleled in multiple units to meet ventilation needs in large spaces.

2. High-Temperature, Wear-Resistant, Explosion-Proof Centrifugal Fan (Specifically for Sintering and Converter Dust Collection)
1. Operating Condition Adaptation Characteristics
The impeller is overlay-welded with a tungsten carbide wear‑resistant layer, and the casing is constructed from thickened steel plates to withstand erosion by iron oxide dust. Water‑cooled bearings and an integrated thermal‑insulation structure enable short‑term resistance to high temperatures of 250–350°C. Optional stainless‑steel or rubber‑lined anti‑corrosion treatments are available to protect against corrosive sulfide‑containing flue gases.
2. Application Scenarios
- Negative-pressure induced draft for dust removal from the main exhaust of the sintering machine and the flue gas of the ring cooler;
- Explosion-proof extraction and collection of high-temperature fumes from converters and electric arc furnaces, capturing metal dust to prevent dust explosions;
- Transport of corrosive exhaust gases in the desulfurization and denitrification section of a steel plant.

3. Corrosion- and Explosion-Proof Axial/Roof Exhaust Fans
- Ventilation of exhaust gases in the pickling section of the steel rolling mill and in the explosion-proof area of the wastewater treatment facility;
- Steel structure painting and explosion-proof ventilation throughout the pulverized coal bunker building to disperse dust and volatile hydrocarbon vapors.

4. Mobile Explosion-Proof Local Ventilator
It is used for blast furnace maintenance, ladle upkeep, emptying of enclosed material bins, and localized ventilation in underground cable trenches, enabling portable, rapid displacement of flammable and explosive gases to ensure safe maintenance operations.

II. Detailed Application Scenarios Across All Processes in the Steel and Metallurgical Industry
(1) Coking–Metallurgy Integrated Plant Area (the core supporting segment of the Shanxi Steel Plant)
1. Coke oven basement, gas corridor
The FBD explosion-proof counter-rotating fan provides continuous forced ventilation, diluting the concentrations of raw coal gas and methane leaks to mitigate the risk of explosion.
2. Chemical Product Recovery (Crude Benzene, Ammonium Sulfate, Desulfurization)
Anti-corrosion, explosion-proof centrifugal fans provide negative-pressure extraction of flammable, explosive, and corrosive exhaust gases containing benzene and hydrogen sulfide, and are equipped with a corresponding exhaust gas purification system.
3. Coking Oven Equipment Maintenance
Mobile explosion-proof local exhaust fans are used for ventilation inside enclosed furnace chambers and pipelines, reducing the concentration of flammable gases to acceptable levels prior to operations.

(II) Blast Furnace Ironmaking Process
1. Blast furnace hearth and hot blast stove auxiliary ventilation
The explosion-proof axial fan provides ventilation for the furnace cooling zone, removing high-temperature waste heat and preventing the accumulation of coal gas.
2. Blast Furnace Hopper and Pulverized Coal Preparation Workshop
Dust‑explosion‑proof fans provide full‑area ventilation, reducing the suspended concentration of coal dust and preventing dust explosions.
3. Blast Furnace Shutdown for Maintenance
High-pressure explosion-proof blowers rapidly purge residual gas from the furnace, ensuring compliance with safety regulations for hot work and maintenance.

(3) Sintering Process
1. Sintering Main Exhaust Environmental Protection System
The wear-resistant, explosion-proof centrifugal fan generates negative pressure to extract high-temperature, dust-laden sintering flue gas and convey it to the dust removal and desulfurization equipment. The impeller’s wear-resistant coating effectively withstands the prolonged erosive action of iron ore fines, significantly extending the maintenance interval.
2. Ventilation in the sintering plant workshop
High‑flow explosion‑proof axial fans exhaust high‑temperature, dust‑laden exhaust gases, thereby improving the working environment for operators.

(4) Converter/Electric Arc Furnace Steelmaking
1. Explosion-proof collection of steelmaking fumes and dust
High-temperature explosion-proof centrifugal fans provide negative-pressure extraction of high-temperature metal fumes from converters, featuring anti-static and anti-metal-dust‑ignition protection, and are compatible with baghouse dust-collection systems.
2. Ventilation of the steelmaking workshop building
Multiple explosion-proof axial fans operate in concert to rapidly vent high-temperature flue gases and volatile combustible vapors.

(5) Steel rolling, pickling, and deep processing of steel products
1. Anti-corrosion and explosion-proof ventilation for the pickling workshop
Fiberglass-reinforced plastic (FRP) corrosion‑resistant and explosion‑proof fans extract acidic vapors of hydrochloric acid and sulfuric acid, thereby preventing equipment corrosion and the risk of acid‑mist explosions.
2. Cooling ventilation for heat treatment furnaces and annealing furnaces
High-temperature, explosion-proof fans circulate hot air to control the concentration of oil vapor and dust in the furnace area.

(6) Underground roadways supporting metallurgical raw materials
The steel plant’s in-house iron ore and coal mining tunnels are equipped throughout with FBD explosion-proof fans, ensuring adequate ventilation for raw material extraction, controlling methane levels, and providing reliable assurance for the stable supply of upstream metallurgical raw materials.

III. Core Advantages of Anyun Fans in Adapting to Harsh Operating Conditions in the Steel and Metallurgical Industries
1. Multi-layered explosion-proof safety, meeting steel plant safety assessment and acceptance requirements.
The entire unit is certified with an explosion-proof certificate, the MA safety mark for mining applications, and dust‑explosion protection certification, covering three categories of explosive‑hazardous media: coal gas, coal dust, and metal dust. The motor features built‑in triple protection against overheating, leakage, and short circuits; the impeller is coated with an antistatic finish; and the complete equipment has passed national explosion‑proof performance testing, fully meeting the requirements of the steel industry’s standardized safety production acceptance criteria.

2. High-temperature resistant, highly wear-resistant, and resistant to acid and alkali corrosion, suitable for extreme operating conditions.
- High-Temperature Version: Water-cooled bearings plus an insulating interlayer, enabling stable long-term operation at 180°C and withstanding short-term thermal shocks up to 350°C.
- Wear‑resistant version: Impeller features wear‑resistant ceramic or tungsten carbide overlay welding, offering superior resistance to erosion by iron ore fines and metal dust, with a service life extended by 3–5 times.
- Corrosion‑resistant design: All‑stainless‑steel construction (304 grade) with rubber lining, providing protection against corrosion from coking and acid‑pickling flue gases.

3. 24-hour continuous and stable operation, compatible with the steel plant’s uninterrupted production.
Designed for year-round, nonstop metallurgical production, it features long‑life high‑temperature lubrication for heavy‑duty bearings and whole‑machine vibration and noise reduction. It also supports intelligent variable‑frequency control, automatically adjusting airflow and pressure in response to sintering and blast furnace loads, achieving overall energy savings of over 30% while minimizing downtime and maintenance losses.

4. Localized support in Shanxi, with rapid site surveys and prompt delivery of maintenance services.
Based in Shanxi, our company serves major steel, coking, and metallurgical industrial parks across the province. We offer on-site inspections of blast furnace, sintering, and coking facilities, and provide custom-designed blowers tailored to specific wind pressure, corrosion‑resistant, and high‑temperature requirements. We maintain a ready stock of mainstream FBD explosion‑proof blowers, backed by an after-sales team that provides 24‑hour emergency on‑site repairs and regular explosion‑proof re‑inspections, significantly reducing downtime.

5. Full-Specification Customized Solutions
Customizable horizontal/vertical, stationary/mobile, silenced, and water-cooled fans are available; these can be paired with silencers, vibration-isolating bases, ventilation ductwork, and monitoring & early-warning systems, offering a one-stop comprehensive metallurgical ventilation solution.

IV. Production Quality Control Support for Enterprises (with on-site photos of the workshop)
1. A standardized, modern assembly workshop and a comparative performance display platform for different generations of fans, with continuous iterations to develop wear-resistant, explosion-proof, and energy-efficient models.
2. The finished unit undergoes full-load factory trial operation, and is dispatched only after passing individual tests for wind pressure, air volume, and explosion-proof sealing.
3. Quality‑control slogans throughout the plant—“Integrity as the foundation, quality drives enterprise; technological innovation, service wins customers” and “Establish a corporate safety image, promote safe and civilized production”—are integrated into every stage of the production process, ensuring strict adherence to safety standards for metallurgical explosion‑proof equipment prior to shipment.

V. Comprehensive End-to-End Support Service System for the Metallurgical Industry
1. Preliminary Survey and Design: Conduct on-site measurements of gas concentration, flue gas temperature, dust content, and pipeline network resistance, and develop a customized explosion-proof ventilation system design.
2. Mid‑term customized delivery: Material and explosion‑proof rating, as well as airflow and pressure, can be adjusted on demand; complementary installation accessories are provided, and on‑site guidance for installation and commissioning is offered.
3. Long-term post‑maintenance services: annual explosion‑proof safety re‑inspection, replacement of wear‑resistant impellers, motor maintenance, rapid fault repair, and the establishment of a dedicated equipment operation and maintenance file for the steel plant.

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