Wet shaking table operating parameters optimization for maximizing metal recovery from incineration bottom ash fine fraction

0579931 - ÚCHP 2025 RIV GB eng J - Journal Article
Muñiz Sierra, Hector - Šyc, Michal - Korotenko, Ekaterina
Wet shaking table operating parameters optimization for maximizing metal recovery from incineration bottom ash fine fraction.
Waste Management. Roč. 174, FEB 15 (2024), s. 539-548. ISSN 0956-053X. E-ISSN 1879-2456
R&D Projects: GA TA ČR(CZ) TH72020002
Institutional support: RVO:67985858
Keywords : wet shaking table * copper * elemental aluminum
OECD category: Mining and mineral processing
Impact factor: 8.1, year: 2022
Method of publishing: Open access with time embargo

Municipal solid waste incineration bottom ash has emerged as a secondary source of valuable metals, including aluminum and copper. Specifically, the fine fraction, with a particle size less than two millimeters, exhibits average grades of 2.5 g/kg for copper and 10.0 g/kg for elemental aluminum. Gravimetric concentration equipment, such as wet shaking tables, is widely used in the mining and recycling industries to concentrate materials based on density. However, the optimization of these devices typically relies on a trial-and-error approach. This paper presents a statistical model that optimizes the crucial working parameters of the wet shaking table for recovering elemental aluminum in a light product mineral matrix and copper in a high-density product. The statistical analysis highlights that upper values of shaking amplitude are beneficial for both the recovery and grade of copper and aluminum in the obtained products. Conversely, variations in other param eters, such as wash water or desk tilt, yield contrasting effects on grade and recovery. By precisely adjusting the working parameters of the device, the analyses demonstrate that copper enrichment of up to 45 times can be achieved in the product smaller than 500 µm and up to 15 times in the 500–2000 µm product, resulting in the recovery of approximately 65 % of the total copper.
Permanent Link: https://hdl.handle.net/11104/0348731