Recovering metal values hydrometallurgically from spent dry battery cells

Sulfur dioxide leaching of spent zinc–carbon-battery scrap

“…7a). This is consistent with the findings of Rabah et al [10] and shows reprecipitation of dissolved metal ions which did not occur when a higher flow rate of 200 mL min −1 was used. At the higher flow rate all of the manganese and zinc dissolved (Fig.…”

Development of a combined pyro- and hydro-metallurgical route to treat spent zinc–carbon batteries

“…A good number of reports have been reported on the application of hydrometallurgical process for zinc recovery from various types of batteries [10][11][12][13][14][15][16][17]. While some authors have exploited electrochemical routes such as electrodeposition following acid leaching of the batteries [14,18,19,35,36], some other authors have preferred the use of solvent extraction after acid leaching [20,21].…”

The dissolution mechanism of cathodic active materials of spent Zn–Mn batteries in HCl

“…Its cathodic active materials mainly contain Mn(OH) 2 [12,13]. The specific composition depends on some characteristics of the batteries such as discharge state, stocking conditions, etc.…”