Thermal Beneficiation


The SEFA Group is a long-time leader in developing more innovative approaches for fly ash management practices through Thermal BeneficiationTM processes that are more efficient, more economical and better designed to meet the needs of our utility partners.

For well over a decade, our multi-million dollar facilities have literally burned excess carbon and other contaminants from coal fly ash, resulting in a steady stream of higher quality fly ash for our customers beneficial use in concrete.

Now we’ve created an even better way. The STAR® – Staged Turbulent Air Reactor – Plants we’ve designed and built are nothing short of revolutionary. This breakthrough beneficiation system not only lowers the amount of unburned carbon and other contaminants in fly ash, but it can totally eliminate all of the unburned carbon, producing a purified mineral matter that can be used in a wide range of products. The STAR® allows our customers to reduce their use of virgin building materials while at the same time creating stronger, more durable products.

The STAR® technology also can convert more fly ash – in fact, in many cases, our utility partners can utilize 100 percent of their fly ash production and totally eliminate all fly ash disposal. Our STAR® technology offers many other advantages and opportunities not formerly available with other beneficiation processes. Contact us directly for more information.

STAR® has demonstrated the ability to provide a range of products that can be applied across a wide variety of new markets not previously open to by-product fly ash or other beneficiation processes. Our latest development, STAR® Refined Pozzolan, has applications ranging from ready-mix concrete to paving to precast products. It also promotes sustainable development by cutting down on the amount of new materials used in manufacturing. It’s recognized by the U.S. Green Building Council as a post-industrial, pre-consumer recycled material, which means it can contribute toward LEED credits.

Those aren’t the only advantages of STAR® Refined Pozzolan. Its superior strength and air entraining characteristics allow its use in more concrete mixes and at higher dosage rates. It also improves workability and reduces permeability, which delays onset of reinforcing steel corrosion. STAR® Refined Pozzolan allows manufacturers to confidently tailor mixes precisely to meet weather, job or specification requirements.