In contrast to traditional waste processing methods for lightweight aggregates which have relied on thermal processing, often burning at temperatures above 1200 degrees Celsius, this new method does not require burning of waste, making aggregate production less energy-intensive and more cost-effective.
Established methods have not only been energy-intensive but also carried increased occupational safety risks due to high temperatures. They have also left a significant carbon footprint, leading to economic inefficiencies in addition to environmental degradation.
The institute's specialists point out the key benefits of this innovation as reduced energy consumption and a lower carbon footprint.
Sylwia Jarosławska-Sobór, spokesperson for the Institute, which recently achieved the status of a National Research Institute, explained that the new technology features mechanical processing.
It uses hydraulic binders in the aggregate production process, while its proprietary chemistry ensures that the final product does not release harmful substances into the environment.
The technology, created by Marcin Głodniok, allows for the production of a lightweight aggregate mixture from the hazardous waste plus stabilizing chemicals, binders and water.
This method, which makes it possible to process waste such as ashes and slag, aligns with the concepts of circular economy and urban mining, transforming urban waste into valuable resources, according to the inventors.
Poland's Central Mining Institute has emphasized the significance of urban mining as a crucial aspect of the circular economy. It focuses on designing products and materials in a way that allows them to be successfully reused.
The mixture developed by the Polish scientists is primarily intended for the construction of road infrastructure facilities.
Recently, the technology was recognized with an award in the regional Innowator Śląska 2023 innovation competition.
(rt/gs)
Source: PAP