Fig. 3
From: Leaching of liquation-feeding furnace dross as a first step for germanium recovery
Leaching yields of germanium and zinc from liquation-feeding furnace dross using sulfuric acid under different conditions: a influence of initial acid concentration (2 h, 80 °C, L:S 10:1), b influence of phase ratio (2 h, 80 °C, 15% wt. H2SO4), c influence of temperature (2 h, 15% wt. H2SO4, L:S 10:1), d influence of 30% H2O2 dose volume (1 + 1 h after oxidant addition, 80 °C, 15% wt. H2SO4, L:S 10:1)