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Scrubbing & beneficiation piloting

Scrubbing & beneficiation piloting

Many mineral ore types are hosted in clays (e.g. Smectites or Kaolinites), which by nature have extremely fine size distributions (<5 µm) that do not require grinding. Many clays, however, exhibit plastic or swelling characteristics and are tightly agglomerated to strongly resist forming a slurry via water addition only. Scrubbing is the process of adding tumbling and/or shear energy to a clay bearing ore-water mix to break up agglomerates and produce a free- flowing slurry. Beneficiation is the concentration of valuable minerals post grinding or scrubbing. ALS has an extensive batch and pilot scrubbing, and beneficiation, capability and has the operational know-how to take your scrubbing and beneficiation pilot to a successful outcome.

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Scrubbing and Beneficiation Piloting Services

Although simple in concept, scrubbing is difficult to measure and can be one of the most subjective and challenging processing steps. As such, a comprehensive batch program may need to be completed before to proceeding to continuous pilot operation. Beneficiation is a wide-ranging area of processing with many mechanisms and proprietary equipment available for mineral separation and concentration. Some of the common scrubbing and beneficiation techniques available to clients at ALS are described below.


Feed Arrangements and Slurry Handling: As with milling, ALS has all of the before and after materials handling arrangements for pilot scrubbing and beneficiation. ALS has a range of different sized feed hoppers and belt/screw feeders to match the scrubber size. Similarly, a range of slurry pumps in various sizes is available to handle scrubbed slurry including: Open bowl Sala and Metso pumps, Warman AH Slurry pumps, Bredle peristaltic hose pumps and Sandpiper peristaltic diaphragm pumps. In combination, the above equipment can meet most pilot scrubber solutions.

Beneficiation Circuits:

Need more information or want to devise a specific scrubbing and/or beneficiation circuit?

ALS can meet your needs and can also leverage off vendors for specific or non-conventional equipment items.

Please contact us for further details.


Here are some frequently asked questions

Associated testwork services

Related testwork

Grinding always precedes other processes, both at bench scale and pilot scale that may include:

Click on the above links or contact us for further information. We can integrate a full program for you if required.