Fly Ash - Fine particulate residue generated during combustion processes, captured from flue gases using air pollution control systems. In WTE systems, it is classified as hazardous due to the presence of heavy metals and soluble compounds.

Boiler Slag - A solid byproduct formed at the bottom of high-temperature furnaces during waste combustion. It is typically coarse, glassy, and collects at the base of the system after melting and cooling.

• Waste-to-energy development will inevitably generate hazardous fly ash

• Unlike other residues, fly ash requires controlled and long-term handling

• Current handling methods are not scalable long-term

• Without a permanent solution, this becomes a systemic risk

The key question is not how to manage fly ash today, but how to address it sustainably as volumes increase.

Building on its strong foundation in mineral-based materials, engineering implementation, and large-scale industrial operations, Longsan continues to advance into broader areas of sustainable material innovation. 

The company is actively expanding into environmental technologies, including the treatment and value-added utilization of industrial by-products such as fly ash, leveraging proprietary technology developed and integrating it into its existing materials and production platform.

As of today, our company has already successfully validated this technology using actual WTE plant fly ash samples.