Selection of Ferrosilicon Products

Selection of Ferrosilicon Products – DMS Powders

DMS Powders is a leading producer of Ferrosilicon products for use in the Dense Media Separation of Diamonds. If you are in need of Ferrosilicon for a specific use, DMS Powders offers a wide range of grades to suit any application.

If you need assistance in the selection of Ferrosilicon powders, DMS Powders will assist. Talk to a professional consultant today for more information about our Ferrosilicon products and grades available.


  • Atomised FeSi

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

  • Milled FeSi

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

Ferrosilicon grades and specifications from DMS Powders

Dense Media Separation is a method used in diamond processing, separating diamonds from diamond bearing material. This density separation process requires the use of Ferrosilicon - a fine suspension of solids is used in an aqueous carrier fluid to create a medium of intermediate density, relative to the process feed.

The important properties of the dense suspension or ‘medium’, i.e. powder mixed with water to form heavy liquid, are density, viscosity and stability.

  • Medium density: The proportion of Ferrosilicon powders present in the liquid will determine the medium density. Density can thus be increased by adding more Ferrosilicon to the mixture. The density can be reduced by adding water to the pulp.
  • Medium viscosity: The viscosity of the medium refers to the resistance to flow. The concentration, shape and size of the Ferrosilicon will ultimately determine to what extent the medium is resistant to flow.
  • Medium stability: The tendency of the solids in the medium to settle out is referred to as medium stability. Stability plays a role in determining the behaviour of the medium in the separating process.

There are a number of factors to be taken into consideration in the selection of Ferrosilicon grades. Read through the guidelines on the selection of the medium by DMS Powders, or contact DMS Powders for assistance, to ensure you get the right Ferrosilicon product for your application needs.


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.

Trust the leading ferrosilicon producers for Milled or Atomised Ferro

If you are in need of milled or atomised powdered ferrosilicon products for dense media separation purposes, trust DMS Powders to assist. As a global leader within the ferrosilicon production industry, you can rely on excellent products and services when obtaining your Ferrosilicon from DMS Powders. Our powdered ferrosilicon is also available in safe and convenient forms of packaging. Talk to a professional consultant today for more information about the selection of milled and atomised ferrosilicon products available from DMS Powders.

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