Steel & Metallurgy
Sintering, blast furnace cast house, converter and rolling mill dust, plus coal gas cleaning and ash conveying.
Working condition
Recommended configuration
Each row shows the process stage, the machine we normally select and the point that decides whether it performs on site.
| Process stage | Recommended equipment | Selection point |
|---|---|---|
| Cast house and runner dust | Offline pulse baghouse with capture hoodsGP-LCM / GP-PPC Series | Filter area sized for abrasive dust with cloth velocity below 1.0 m/min, PTFE membrane media. |
| Sintering flue gas | Electrostatic precipitator or baghouse plus FGD and SCRGP-ULE Series | Choose ESP or bag filter by dust resistivity, then add desulfurization and denitrification stages. |
| System draft | Centrifugal induced draft fan with VFDGP-4-73 / GP-9-19 Series | Pressure feedback control so the fan follows the tapping cycle instead of running at fixed speed. |
| Dust discharge and transfer | Rotary airlock valve and drag chain conveyorGP-YJD-A / GP-YJD-B Series | Airtight discharge under hoppers, enclosed conveying to the collection bin to stop secondary dust. |
| Ferroalloy and furnace fume | Furnace fume collection system with hood and spark arresterGP-LF / GP-ZL Series | Hood geometry follows furnace size and charging method; media and cooling stage set by measured fume temperature. |
| Blast furnace top gas | Top gas recovery ejector systemGP-YSQ Series | Dry cleaning and ejector return of pressure equalisation and bleed-off gas to the clean gas main, interlocked with furnace control. |
| Pulverised coal and coke dust | Explosion-proof pulse baghouseGP-MDC / GP-PPC-EX Series | Vent area, inerting and anti-static media selected per dust Kst value and hazard area classification. |
| Energy reduction | Fan and pump VFD retrofitGP-VFD Series | Remove throttling losses on ID fans, blowers and circulating water pumps. |
Energy
Emission limits for sintering and cast house dust differ by region and are updated over time. Design values are set against the standard in force at the project site, and results depend on actual operating condition.
Related projects
Industrial Dust Collection
Offline pulse baghouse with capture hoods on the cast house and slag runner, replacing an undersized collector that could not hold the emission limit during tapping.
Industrial Energy Saving Retrofit
Medium voltage VFD retrofit on induced draft fans and circulating water pumps, with throttling losses removed and closed loop pressure control added.
Technical reading
A working comparison of resistance, outlet stability, temperature window, investment and maintenance between bag filters and electrostatic precipitators.
Affinity laws, load profile measurement, harmonic limits and the metering protocol used to verify a retrofit before and after commissioning.
Which conveyor suits which material, distance, inclination and temperature, and how to match discharge valves with dust collector hoppers.
Send air volume, dust or gas data, temperature and available space. Our engineers reply with a configuration proposal and a budget quotation within 1 working day.
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