Ferrosilicon: Atomised & Milled
DMS Powders
Milled & Atomised Ferrosilicon for Dense Media Separation
DMS Powders Leads the Way
DMS Powders is the global name trusted by mining and mineral processing industries for consistent, high-quality milled & atomised ferrosilicon - vital materials in Dense Media Separation (DMS). As a producer with decades of specialised experience, we continue to lead the global ferrosilicon market through constant reinvestment in our production plants, our team, and in ongoing product innovation.
We don’t just manufacture and distribute ferrosilicon - we support operations worldwide in achieving more efficient separation processes, enhanced recovery rates, and reduced media losses. Our reach spans continents, but our focus remains local: working alongside customers to ensure results where it matters most - in their plants.
DMS Powders:
What Is Ferrosilicon Used For in DMS?
Milled and atomised ferrosilicon are both used in dense medium separation to create a stable, controllable medium with specific gravity high enough to separate valuable minerals from waste material. This media, formed by suspending ferrosilicon in water, is particularly essential in the diamond, coal, and iron ore industries.
The selection between atomised or milled FeSi depends on plant design, cyclone specifications, and density requirements. Both types offer strong magnetic properties, are recoverable through magnetic separators, and have excellent resistance to corrosion and abrasion.
Our Atomised Ferrosilicon Range
DMS Powders produces atomised FeSi through a water atomisation process. This method allows for highly controlled particle shape and size, resulting in improved media stability and reduced consumption.
Atomised FeSi Grades:
- Coarse
- Fine
- Cyclone 60
- Cyclone 40
- DMS 70
These grades are optimised for use in different DMS applications, including primary and secondary cyclones in diamond recovery and in other mineral separation processes requiring precise cut densities. Cyclone 60 and Cyclone 40 are particularly popular for high-efficiency dense medium circuits. DMS 70 offers extra flexibility where ultra-fine control is needed.
Each batch is tested to meet exacting quality standards and ensure repeatable results in every use. Atomised FeSi from DMS Powders remains stable in suspension, settles predictably, and is easily recovered magnetically.
Our Milled Ferrosilicon Range
Milled ferrosilicon is produced by grinding high-grade FeSi granules to a carefully monitored particle distribution. This traditional production method is still in widespread use today and remains ideal for many types of DMS circuits, especially in coal and iron ore applications.
Milled FeSi Grades:
- 65D
- 100D
- 150D
- 270D
- 270F
Each grade is selected based on application requirements, such as density range, cyclone size, and system throughput. Coarser grades (e.g. 65D and 100D) provide excellent recoverability and medium stability for larger plants, while finer grades (270D and 270F) are better suited for tighter separations or use in smaller cyclones.
We continuously refine our milling processes to minimise dust, control shape distribution, and ensure repeatable media performance across varying densities.
Packaging Designed for Real-World Efficiency
All our ferrosilicon, whether milled or atomised, is packaged to handle the challenges of industrial sites. Packaging options are selected for:
- Moisture protection
- Safe handling
- Storage durability
- Stackability and transport efficiency
Our bags are water-resistant, durable, and designed to prevent contamination or product loss, whether they’re stored in dry warehouses or used in damp processing areas.
Why DMS Powders?
We’ve remained at the forefront of ferrosilicon production since 1949. Here's what sets DMS Powders apart:
1. Global Distribution, Local Service
We deliver milled & atomised ferrosilicon to plants across Africa, Europe, Asia, and the Americas. Our logistics and support networks ensure fast delivery, technical back-up, and consistent product availability.
2. Research-Led Quality
Each product grade is manufactured under stringent ISO-controlled processes, tested at multiple points, and backed by lab data for guaranteed density, magnetic properties, and particle size.
3. Technical Support & Customer Relationships
We actively maintain close relationships with our customers through regular technical symposiums, where we share knowledge, improve process performance, and receive direct feedback. These collaborative platforms are key to adapting our products to changing industry needs.
4. A Trusted Name in Mining
Our powders are relied upon by the world's most established mining and processing operations. Customers don’t just choose DMS Powders for product, they choose a partnership that helps optimise plant performance over the long term.
DMS Powders
What We Stand For
- Profitably maintain our core business through excellence in production, distribution and marketing.
- Develop and enhance global alliances and external relationships to secure optimal market knowledge and increase strategic and operational flexibility.
- Empower employees with knowledge and resources to act in accordance with core values.
- Create industry benefit by providing opportunities for shared technical knowledge and skills.
- Actively manage and build our portfolio of high-quality assets and services.
- Continue the drive towards a high-performance organisation, in which every individual accepts responsibility and is rewarded for results.
- Earn the trust of employees, customers, suppliers, communities and shareholders by being forthright in our communications and consistently delivering on commitments.
- Ethics: Uncompromising honesty, integrity, trust and reliability in our dealings with each other.
- Excellence: Setting high standards in every aspect of business and continuously striving to outperform them.
- Prosperity: Pursuance of productivity and effectiveness to create a fair value proposition for shareholders, customers, employees and suppliers.
- Sustainability: An overriding commitment to safety, environmental responsibility and sustainable development.
Automised FeSi
Coarse, Fine, Cyclone 60, Cyclone 40, DMS 70
Milled FeSi
65D, 100D, 150D, 270D, 270F
DMS Powders
Packaging
Our packaging has been specifically designed for:
Ease of handling
Safety
Product integrity
Durability
Water resistance
Consistency. Control. Confidence.
Whether you're operating a high-throughput diamond recovery plant or a compact coal separation unit, the quality of your medium can make or break efficiency. With DMS Powders, your separation process benefits from:
- High stability in suspension
- Low consumption due to slow media degradation
- Fast magnetic recovery
- Reliable cut-point control
Every batch of our milled and atomised ferrosilicon is engineered to deliver optimal performance - minimising loss, improving separation sharpness, and supporting throughput targets.
Get in Touch
Let us help you select the right ferrosilicon grade for your dense media circuit. Whether you’re expanding capacity, building a new plant, or optimising an existing operation, DMS Powders is ready to support your goals.
Speak to our technical sales team
Visit www.dmspowders.com
Frequently Asked Questions: Milled & Atomised Ferrosilicon
What’s the difference between milled and atomised ferrosilicon?
Milled ferrosilicon is ground mechanically from solid lumps and is typically angular in shape, with a wider particle distribution. It’s ideal for coarse separations and robust media circuits.
Atomised ferrosilicon is produced by water atomisation, creating spherical or irregular rounded particles. This type gives superior stability in suspension and is often used in precision circuits such as those for diamond recovery.
How do I choose the right grade of ferrosilicon?
Your selection depends on:
- Cyclone size and type
- Density cut-point requirements
- Media recovery system
- Plant throughput
Contact our technical team for tailored advice. We’ll assess your plant specs and recommend the most efficient solution.
Is your ferrosilicon suitable for diamond recovery?
Yes. Our Cyclone 60, Cyclone 40, and DMS 70 grades are widely used in diamond processing applications worldwide. These grades are tailored for high-density, high-sharpness separations and are manufactured with consistent particle sizing to reduce misplacement and improve diamond yield.
Do you offer technical support?
Yes. Beyond supplying product, we offer:
- Media stability consultations
- On-site support during commissioning
- Ongoing training on media maintenance
- Troubleshooting assistance for separation issues
Our customers also benefit from shared insights through the regular technical symposiums we host, designed to keep your team informed and your plant running efficiently.
Where do you ship from?
We manufacture from our plant in South Africa and have trusted distributors and logistics partners in major mining regions globally. Contact us for delivery timelines and availability in your region.
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