Getting metal out of minerals

Sand, clay, salt, stone, lime and pottery are known forms of minerals and ceramic materials.

When mining for these raw materials, iron contamination often comes from two sources: external contamination, from nature, and contamination from ferrous environmental components.

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Foreign bodies

Unwanted metals or foreign bodies from external sources are usually the most important source of contamination, because mining for minerals causes much wear to the equipment or mining equipment.

Such as wear to the bucket, the ripper or the splitters, and the transport in its entirety. But also breakage of bucket teeth and fingers, or the ripper.

Filtering & separation
magnets for the ceramic industry

The risks of metal contamination

The risks of unwanted metals in minerals and ceramics include value depreciation and then loss of usage value in the presence of impurities. The purchaser himself will therefore need to ensure that his product is iron-free.

The chip industry uses minerals among other things. If the mineral powder to be processed is contaminated with iron, it causes problems in production. This will also bring financial consequences: a high quality, pure raw material simply has a higher value.

In the ceramic industry, the presence of iron particles causes ‘black specks’ or rust particles in the glazing, and in finished goods, such as chamotte, quartz sand and feldspar.

But metal contamination also causes machine or production damage. In particular, broken-off teeth of excavator buckets can cause serious damage to breakers, the drums and the sieves. This results in production downtime and delay as well as the associated costs for repairs and reduced production capacity.

Which separator?

We have a variety of magnetic separators for the optimal deferrization of metal particles from liquids, slurry and dry powders.

Magnetic drum separators, for example, remove very fine magnetic metal contamination of just a few microns from minerals and thus ensure an iron-free finished product.

Because minerals and ceramics often have highly abrasive properties, we coat these magnet systems with an extra hard layer such as tungsten carbide or hard inchromizing.

Drum separators
drum magnet for minerals and ceramic materials

In conclusion

The intensive use of raw materials results in scarcity: high-quality raw materials are running out, as a result of which people are increasingly looking for raw materials that are less pure and of lower quality.

That is why we must remove even more metal particles.

This places high demands on magnetic separators to provide an ever-finer metal separation and also be easily cleanable.


More information?

For more information, please contact our experts:

Call: +31(0)40 2213283 or mail: