The incinerated ferrous scrap, burnt scrap or E46, is the by-product derived from the reprocessing of the incinerated domestic waste. This bottom ash from waste incinerators contains up to 90% mineral traces, 4-8% ferrous metals, and roughly 2% non-ferrous metals.
During the final step of the combustion process, the inert fraction output (IBA – Incinerator bottom ash) reaches the end of the moving grate and it falls into a water bath.
The cooling process extinguishes the bottom ash, facilitating the handling, and minimising the dust issues.
Upon arrival at one of IBA Processing Facilities, the IBA is quarantined, stored, and left to mature for 6-8 weeks.
After maturation, magnetic separation is one of the first steps in the bottom ash sorting system, the main goal is to remove ferrous metals. There are many different types and setups of magnetic separation. The most common in bottom ash sorting is to use magnetic drums and overhead suspension magnets.
Another important step is the sieving process to guarantee accurate fractioning of the bottom ash.
On visual inspection, the material is in fragments, with iron and steel parts, resulting in partly cut or shredded form. The stock appears heterogeneous and contains all kind of cut or dismantled steel parts such as sheets, bars, frames, wires, bolts, and other iron/steel household residues.
The incinerated scrap is eventually oxidised, due to the thermal and cooling treatments, that the material has been submitted to. The burnt scrap also contains minor slag parts, ash and iron oxide, due to the recovery process.
Such components are inherent and adhere to the scrap surface. All the impurities can be sorted, but not fully removed. In particular, some ferrous parts are embedded into the molten ash/slag and are collected by the magnet device.
This disadvantage is outweighed by its competitive pricing. The price of ferrous incinerated scrap is substantially lower than the price of HMS and it allows our customers to reduce their production net costs and increase their competitiveness.
The collected stock is stored in the open air, on cement flooring.
This ferrous scrap can be loaded loose into 20’ heavy-duty containers.