Spiral Classifier, Dewatering Screw

This spiral classifier/dewatering screw is a multi-purpose machine. As a classifier, it separates out the smaller waste particles from the ore processor tailings. The larger particles can then be returned to the grinding circuit for finer grinding to liberate more values.

Many locations don’t have a ready source of water, so when used as a dewatering screw, the slurry particles are removed from the waste stream before the settling pond. This makes the water available for recirculating without filling the settling pond with tailings.

Sold individually or as part of our Turn-Key Ore processing system.

For questions and/or an expert opinion on what size and accessories you’ll need to complete your job, we’re here to help answer any questions you have.

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Description:

The size of the particles discharged to the tailings pond is controlled by two methods. First, the volume of feed water is adjusted to flush the pool at the bottom of the spiral classifier. The more water that flows in, the coarser the particles that are discharged to the tailings pond. The second adjustment is by setting the height of the water level in the classifier pool. There are three outlet ports along the side of the pool at different elevations. Choosing the upper port results in the highest water level in the pool, allowing the heavier slurry particles to settle and be augered out the top for re-grinding, and the finest particles to be discharged to the tailings pond. Choosing a lower port allows the heavier particles to flush out of the pool to the tailings pond. Tuning the flow of water and the height of the water in the classifier pool controls the size of particles discharged to the tailings pond.

Standard features include:

  • The auger is 12” diameter and 16’ long in a steel U trough
  • The motor is a 2 hp electric coupled to a gear reducer and a chain drives the auger
  • All bearings are mounted outside of the slurry to avoid damage by the grit
  • The shaft seal at the lower end is a packing gland with Teflon packing

What our customers say:

This is a useful tool in the desert where water must be trucked in.  It dewaters our tailings and keeps the slurry from filling up our small settling pond. Read More

Desert Miner

Specifications

Size Motor Tons/Hour Videos Drawings
16' long, 12" diameter 2 hp electric motor 4 Spiral Classifier Videos

Pricing

Price
$15,900