Diamond Mining and Processing

Diamond Mining and Processing – DMS Powders

DMS Powders is considered a leading producer of ferrosilicon for dense media separation for diamond mining and processing across the world. Business started in 1949, giving us over 60 years of experience in the ferrosilicon manufacturing business. During this time DMS Powders have gained valuable knowledge about producing ferrosilicon, perfecting our ferrosilicon production process.

If you are looking for a supplier of ferrosilicon products including Atomised Ferrosilicon or Milled Ferrosilicon for the diamond mining and processing industry, talk to a consultant at DMS Powders today. Our team will provide you with suitable ferrosilicon products that fit your application needs, as well as offer technical product support if required.


  • Atomised FeSi

    Coarse, Fine, Cyclone 60, Cyclone 40, DMS 70

  • Milled FeSi

    65D, 100D, 150D, 270D, 270F

About diamond mining and processing using Ferrosilicon powders

Diamonds are found in Kimberlites, which occur in the upper sections of the Earth's crust. Kimberlites are diamond bearing rocks that are presented in pipes, dikes, veins, and sills. Once the diamond bearing material is mined, it needs to be transported to a diamond processing planting, usually in close proximity to the diamond mine. Firstly the material will be crushed and milled, after which it will go through a dense media separation process (should this method be used in diamond separation). This is where the Ferrosilicon Powder is used.

The process of Dense Media Separation is used for the extraction of diamonds, and other minerals where there is a distinct difference in density in comparison to the unwanted waste material. In the process of Dense Media Separation in diamonds, a powdered ferrosilicon (which is an alloy of iron) is suspended in water to form a defined pulp density (heavy liquid), close to the density of diamond (3.52 g/cm3). The diamond bearing material is then added to the fluid, which will start the separation process of the heavier minerals from the lighter material. Heavier minerals will then sink in the slurry, whilst the lighter materials will rise to the surface. Dense media separation is widely used in the diamond mining and processing industry due to its effective results and easy execution.

The most important part is to select a Ferrosilicon powder that comprises of the correct medium density, medium viscosity and medium stability to ensure that you get the best results.


Our packaging has been specifically designed for:

  • Ease of handling
  • Safety
  • Product integrity
  • Durability
  • Water resistance
  • 125kg steel drums on pallets

  • 250kg plastic drums on pallets

  • 1mt & 2mt bags loose or on pallets.

Contact DMS Powders for ferrosilicon for you diamond mining and processing needs

Contact DMS Powders today for more information about our Milled and Atomised ferrosilicon products. We will supply you with the best ferrosilicon products, suitable for diamond mining and processing.

Our ferrosilicon products are also conveniently packaged, available is various container sizes.

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