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Case Study

Pre Dryer Feeder


Case Parameters

General Properties
Equipment Type: Feeder
Industry: Chemical / Fertiliser / Salt
Physical Properties
Unit Length: 3460 mm
Unit Width: 1025 mm
Unit Height: 1436 mm
Unit Weight: 1200 kg
Capacity: 52 tph
Product Ammonium Nitrate
Drive Type: Sub Resonant
Liner Type
Support Type Oscillating Mount
Trough Construction Stainless Steel
Cover Type Quick Release
Motor Quantity 2
Support Location Bottom


In the ammonium nitrate process, the product needs to be dried to a certain level before it can continue. Two 3m diameter dryers were used by the client to achieve this. The first one was fed by the pre dryer feeder and the client needed a unit to fit in between the two dryers to receive partly dry material from the first unit and then feed into the second.


The unit supplied by Vibroflow was a 3.5m direct drive unit. A special receiving chute was integrated onto the feed end of the unit that was specially designed to receive material from the dryer.

Special hinged covers were installed on this unit that would allow easy inspection and be safe to life and operate.

The design of this unit was a challenge as there was limited space for the location of the supports due to the proximity of the two dryers. This was overcome by installing two oscillating mounts on the rear and a single unit on the front.

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