the mouteh refractory pyrite concentrates at pulp densities of 1.5%, 3%, 4.5% and 6% were treated, using thiobacillus ferrooxidans dsm 581 and the same bacteria adapted on the mouteh pyritic concentrate. compared with a non-adapted culture, use of an adapted inoculum of t. ferrooxidans increased bioleaching rate of iron by a factor of 1.940, 2.011, 1.859 and 1.559 for pulp densities 1.5%, 3%, 4...

The extractive metallurgy of gold is largely driven by mineralogical factors such as gold particle size; association with other minerals; coatings; presence of cyanicides, oxygen consumers, and preg-robbers; presence of refractory gold minerals; locking of submicroscopic gold in sulfide and sulfarsenide mineral structures. Gold process mineralogy address all issues related to gold ore processin...

PURPOSE To report the first case of gold shunt surgery for treatment of silicone oil-induced refractory glaucoma in a tertiary care academic center, with 5-year follow-up. DESIGN The study design is a case report. PARTICIPANTS The participant was a patient who underwent gold shunt surgery. METHODS Institutional Research Ethics Board approval for the study was obtained. A diabetic patient ...

A simulation-based life cycle assessment was conducted to compare the impacts of different cyanide-free chloride processing routes for refractory ores determine whether one-stage leaching gold from could be advantageous over after conventional pressure oxidation an environmental perspective. It shown that both conditions and refractoriness ore strongly affect process. The global warming potenti...