hamos EMS & KMS - Electrostatic Mineral Separators

Electrostatic mineral separators for single-variety fractions

hamos KMS electrostatic mineral separators sort heavy mineral sands economically and with good separation results into single-variety fractions. The dry process utilizes the differences in the conductivity of the minerals for separation. From sands containing heavy minerals (for example ilmenite, rutile or zircon sands) and other suitable sand mixtures, desired constituents can be concentrated and undesired foreign materials separated.

With hamos EMS electrostatic mineral separators, mineral mixtures such as quartz and feldspar can be separated into their components by dry means. The feldspar, for example, is separated and the quartz is concentrated. By utilizing the tribo-electric behavior of the individual minerals, the hamos EMS separates your mixed materials into pure fractions with little effort.

Requirements for your material

In order to achieve an optimum separation result with the hamos KMS, the mineral mixtures to be separated must be as follows:

  • Mixture of minerals with different conductivity
  • Dry material
  • Dedusted material (fine dusts should be separated beforehand)
  • Particle size 100 µm to 1000 µm
  • Maximum material temperature + 140° C

In order to achieve an optimum separation result with the hamos EMS, the mineral mixtures to be separated must be as follows:

  • Mineral mixture with different charging behavior
  • Particle size 100 µm to 1000 µm
  • Dry material
  • Dedusted material (fine dusts should be separated)
  • Maximum material temperature + 150° C
  • Ideally two-component mixture

Not sure if your material is suitable for electrostatic separation? Talk to our experts. We will be happy to carry out a separation test in our technical center to investigate the separability of your material.

We show you which purities and throughputs we achieve with your material. Based on these separation results, you will receive our test report. We then offer you the optimum device or system for your application.

Operating principle

hamos KMS
Before electrostatic separation, the dry mineral mixture is conditioned. Neither chemicals nor liquids are required for this.

In the hamos KMS electrostatic separator, the pretreated mineral mixture is fed via a metering unit onto separation drums and electrostatically charged. Conductive minerals release their charge to the grounded drum and are thrown off by rotational forces. Non-conductive minerals, on the other hand, slowly lose their charge and adhere to the roller surface, from which they are brushed off.

Thanks to a flexible machine concept, the hamos KMS mineral separator can achieve the highest purities at high throughput rates. In addition, different separation strategies can be pursued, specially adapted to the respective deposit.

hamos EMS
The dry mineral mixture must be dedusted and conditioned before electrostatic separation. Conditioning does not require any chemical additives or liquids. In the hamos EMS separator, the mineral mixture is now charged by tribo-electric effects in a specially designed charging unit. In the process, the individual material components take on material-specific charges with different polarities.

In the separator, electrostatic separation into positively and negatively charged components takes place by means of a high-voltage electrostatic field. Adjustable separator plates are used to optimize the product purities.

Your advantages

  • Dry separation process
  • No chemicals required
  • Clean mineral fractions
  • Problem-free further processing of the minerals
  • Simple operation
  • Cost effective separation
  • High efficiency
  • Low energy consumption
  • Fully automatic process


For example, if you

  • Sands containing heavy minerals
  • Other sand mixtures suitable for separation
  • with different charging behavior and
  • a particle size from 100 µm to 1000 µm

process, the hamos EMS is the ideal device for mineral separation.

Professionals work with professionals

After 21 years of operation, our experience with the hamos WRS window recycling plant is very positive. The plant is an important part of our process. It helps us to achieve our targets. It guarantees the highest quality required for the PVC and thus increases the overall performance of our process. The hamos plant is indispensable and "closes our recycling loop."

- Bodo Streubel, Operations Manager of Dekura Bad Schmiedeberg

We are very satisfied with the standard hamos GmbH has achieved. Previously, it was not possible to sort PVC from profile sections and production remnants fully automatically to this high standard of quality and purity. This development has helped us to completely close the material loop in window profile production. A new world-class standard was born.

- Jörg Ipfling, Manager Recycling Technology Window Solutions at Rehau

The electrostatic recycling systems of HAMOS make a very important contribution to the recycling process of PVC windows due to their good separation performance.

- ppa. S. Lengnick, Production Management, VEKA Umwelttechnik GmbH

The separation systems supplied by hamos are an essential part of ensuring the highest quality of products supplied by Metal-Plast to the market. By using hamos solutions we have increased the processing capacity of our plant and the products manufactured by Metal-Plast are of the highest quality.

- Grzegorz Jasiński, Chairman of the Board


For more information, please download our product brochure.

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