Use of Ferrosilicon in Diamond Processing Plants

Ferrosilicon for Diamond Processing - DMS Powders

Diamond processing is a multi-phase process that involves a number of different process stages. One of the initial stages requires the separation of the diamond from diamond-bearing material. A process called dense media separation is used, which uses the laws of gravity to easily and effectively separate diamonds and other minerals from the mineral bearing material.

DMS Powders is a producer of Ferrosilicon powders, which is used in the process of Dense Media Separation. Read more below about the use of Ferrosilicon in diamond processing plants, or contact DMS Powders today to order your Ferrosilicon products.

  • Atomised FeSi

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

  • Milled FeSi

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

The use of Ferrosilicon in Diamond Processing Plants

Dense / heavy medium separation also referred to as the sink-and-float process, is widely used in mineral / diamond processing plants to effectively separate diamonds and minerals from other material. A medium is made in a gravity separator tank (Dense Media Cyclone), which is a mixture of Ferrosilicon powder and water, until it reaches a very specific density that will facilitate the separation of diamonds from other material. This density is usually very close to the density of diamonds for effective results. The diamond-bearing material is then submerged in the mixture, to initiate the gravity separation process. The Dense Media Cyclone will allow the heavier material to sink to the bottom of the tank, while lighter material floats at the top. This effective method will thus separate materials with different densities, and prepare the minerals for further processing.

Types of Ferrosilicon Powders produced by DMS Powders

DMS Powders produces two main types of Ferrosilicon, namely Atomised and Milled Ferrosilicon. Atomised Ferrosilicon possesses a spherical shape, where Milled Ferrosilicon is more angularly shaped, with slight differences in the production process. You can order the following Ferrosilicon products from DMS Powders to meet your mineral processing or other needs:

  • Atomised Ferrosilicon: Coarse, Fine, Cyclone 60, Cyclone 40, DMS 70
  • Milled Ferrosilicon: 65D, 100D, 150D, 270D, 270F

For more information about the above types and grades of Ferrosilicon, talk to a consultant at DMS Powders today. Our professional and experienced consultants will help you to obtain the best Ferrosilicon products for use in diamond processing plants.


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.

Leading exporter of ferrosilicon in Africa

DMS not only supplies Ferrosilicon locally, but is a trusted exported of our range of Ferrosilicon products; companies across the globe make use of our quality Ferrosilicon from DMS Powders.

Our products are conveniently packaged to ensure easy handling, safe transport and to protect the product from damage and water. Talk to a consultant today about package sizes and options, and to place your order for Ferrosilicon today.