USE OF TRIVALENT IRON BACTERIAL SULFURIC ACID SOLUTIONS IN HYDROMETALLURGY

摘要

Differences are established for composition, physicochemical, rheological, and processing properties of trivalent iron bacteriological solutions from solutions without bacteria, governing predominantly the use of oxidation with bacteria in hydrometallurgical processes. Bacterial solutions have considerable oxidation-reduction potential, solubility of trivalent iron compounds, viscosity, and low surface tension. As a result of this, the oxidation rate for sulfides and solid phase deposition in bacterial solutions is higher than in solutions without bacteria.