(Bio)dissolution of Glassy and Diopside-Bearing Metallurgical Slags: Experimental and Economic Aspects

Dissolution of diopside-bearing slag and its amorphous counterpart was investigated to decipher recovery potential these slags. The contribution direct phase dissolution using a biotic solution with Acidithiobacillus thiooxidans versus sterile growth medium, whereas citric acid applied demonstrate slags in organic medium. Potential metal donor phases easily released elements were identified by comparing theoretical experimental ratios. It shown that K Na the most mobile leaching from glassy diopside (up 99%). Recovery targeted metals quantities 56% (Cu)–96% (Zn) 27% (Cu)–98% slag. Results demonstrated studied are good candidates for Zn during short-term treatment, extension time would be required efficient Cu extraction. Abiotic medium had little effect on 53% only 3% slags, respectively). Glassy revealed greater susceptibility as compared Further studies improving conditions expected improve environmental soundness proposed treatments generate residues depleted toxic elements. This study highlights importance evaluation individual terms major leachability.