Can you supply the fans across the whole mineral-processing flowsheet, or only one duty?
Across the whole flowsheet. We have executed a handful of mining & minerals duties spanning dirty-side ore-dust extraction, dilute-phase pneumatic conveying, mine auxiliary ventilation, bag-filter and pulse-jet draught, kiln/dryer/calciner exhaust off mineral processing, and general and dilution ventilation. Each fan is engineered to its own dust load, static and temperature — the abrasive dust collector and the high-static mine-vent fan are different machines — but they come from one partner, on one engineering convention across the plant. The underlying fan engineering is proven right across our range of dust and high-static duty.
Mineral dust is brutal. How do you protect the wheel and casing?
Mining dust is hard, angular, silica-bearing rock and the most abrasive load in any fan duty, with heavy dirty-side loading, so we protect three ways sized to your loading. A rugged radial wheel that sheds dust and resists erosion; chrome-carbide hard-facing on the blade leading edges and high-wear zones; and bolted-in, replaceable AR wear plates and liners at the scroll throat and inlet with inspection and cleanout doors, so worn parts change out in place. The wear scope is replaceable, not welded in — which is what keeps the fan running through the dust rather than eroding out of balance in a season.
Our dust cakes on the wheel and throws it out of balance. What do you do about buildup?
We choose a self-cleaning radial blade geometry that does not let dust key onto the wheel, and we balance to ISO 21940 G6.3 as standard (G2.5 or G1.0 on application) with margin for in-service build-up, because even a few grams caked off-centre drives vibration up at running speed. Bearings are kept outside the airstream, and we fit inspection and cleanout doors so the wheel is checked and cleared without pulling the fan. On sticky fractions we size the wear and the geometry to your material, not a default.
We need high static for mine auxiliary ventilation and long dedusting mains. Can you make the pressure?
Yes. We engineer the duty point onto the best-efficiency region of a high-static radial or backward-curved plate wheel, sized where its curve crosses your system, so the fan forces the flow down long resistant ducting to the face or through a loaded filter and holds the pressure without running into stall — up to 2,000 mmWC across the envelope. It is proven on our 200 HP VFD test rig before dispatch. Send the system resistance and the flow you need and we size the wheel to cross your curve at its best-efficiency point.
Can you build a replacement to match our existing mineral-plant fan's duty and footprint?
Yes. We reverse-engineer to the existing duty point (flow, static pressure, gas temperature, density and dust load), bearing centres, inlet/outlet orientation and foundation bolt pattern so the unit drops onto the existing base and ducting — whether it is a dust collector, a conveying fan, a mine-vent fan or a process-exhaust fan. Made to your installation, not a nearest-catalogue substitute. Send the old GA, the nameplate and a curve if you have one, and we match it.
Do you performance-test the fans, and what about AMCA, CE, ATEX and quality certification?
Every fan is performance-tested in-house to the AMCA 210 / ISO 5801 method on our 200 HP VFD test rig, and dynamically balanced to ISO 21940 G6.3 as standard (G2.5 / G1.0 on application). To be precise: that in-house testing is to the AMCA 210 / ISO 5801 method, not AMCA-certified, and we are not an AMCA member; CE is self-declared per 2006/42/EC and 2014/35/EU, and ATEX Zone 2/22 is self-declared per 2014/34/EU (Category 3) where the area classification calls for it — those are self-declarations of conformity, not third-party certifications. Our only third-party certification is ISO 9001:2015.
