Batteries

After the batteries have been discharged, they are shredded with the BHS Rotary Shear (VR) for packs and modules or the Universal Shredder (NGU) for cells or as a second shredding step after the rotary shear. In order to avoid sparking, the shredder for this special application is designed gas-tight and operates under a protective atmosphere.

As soon as the feed material has reached the desired target size, the parts fall through appropriately designed grate segments. In horizontal continuous or batch dryers of our subsidiary AVA, the shredded batteries are then heated batch by batch so that the electrolyte components evaporate and can be recovered via a condensation unit. The solid components, completely free of electrolytes, undergo a dry-mechanical treatment. After an initial screening, black mass can already be recovered. Subsequently, a heavy/light separation takes place by means of sifting. The remaining composites go to a second size reduction stage and are fed to a dry-mechanical sorting system. As end products, the black mass as well as smeltable copper concentrate and concentrated aluminium can be recovered.