Coal Ash Processing
Coal Combustion Residuals (CCRs), also referred to as “Coal Ash”, “Ponded Fly Ash”, “Fly Ash”, “Bottom Ash” and other related terms, are by-products resulting from the burning of coal to generate steam or electricity in power plants. These by-products are defined as follows:
Fly Ash – a very fine, powdery material composed mostly of silica resulting from the combustion of finely ground coal in a boiler and being drafted by the off-gases into a dust collector.
Bottom Ash – a coarse, angular ash particle that is too large to be carried up into the off-gases, so it drops to the bottom of the coal furnace.
Power plants benefit from the revenue of the sale of coal ash that meets specifications for use as a pozzolanic additive in the preparation of ready-mix concrete. Excess ash not sold has been sluiced and ponded, which has created a negative environmental impact. With stricter regulations on water pollution and the diminution of the production of fresh fly ash, a need has been created to reprocess ponded and land-filled ash to a salable product, mostly for the concrete industry. Fly ash and bottom ash can be used in the production of concrete and as a raw material in Portland cement manufacturing.
We serve the needs of our clients from both ends of the spectrum: The power industry and the users or traders of fly ash. We have expertise with feasibility and environmental studies, process engineering and logistics. PENTA has designed ash distribution terminals and engineered the material handling and storage systems for fly ash from the source to the end user.