From waste to construction material
The bottom ash that remains after the incineration of municipal solid waste in Energy-from-Waste (EfW) plants is treated in one of REMEX’ recycling plants. After the raw ash (also: grate ash) has been processed, it is referred to as incinerator bottom ash (IBA) or incinerator bottom ash aggregate (IBAA) respectively. Within the industry, the term slag instead of ash is sometimes used as an alternative expression.
The raw ash from municipal solid waste incineration (MSWI) is essentially processed by classifying the mineral fraction and separating ferrous metals and non-ferrous metals as well as organic matter. After three months of storage during which new minerals are formed, granova® IBA meets the German environmental requirements for use as substitute construction materials. Due to its composition, granova® is a high-quality alternative to natural aggregates.
The actual areas of application result from national and international regulations