Ozone in gold and metal mining: ore pretreatment, leaching enhancement, cyanide destruction, and metal storage and surface cleaning. Eco-friendly technology for mineral processing and metalworking.
All areas
Extraction and metals processing
Ozone in gold mining: refractory ore pretreatment, leaching enhancement, cyanide destruction, and metal cleaning
Ozone in gold mining: global practices (South Africa, Chile, Canada)
Ozone technology at gold operations in South Africa, Chile, Canada, and Southeast Asia: refractory ore pretreatment, cyanide destruction, ICMC compliance.
Ozone cyanide destruction in mining
Mechanism of ozone oxidation of cyanides (CN⁻ → CNO⁻ → bicarbonate and nitrogen), dosing 2–3 g O₃/g CN, 99% reduction of free and WAD cyanide. Comparison with hypochlorite and peroxide, water reuse.
Ozone for metal storage and surface treatment
Cleaning and passivation of metal surfaces with ozone: organic removal, oxide film formation, applications in semiconductors, optics, and aerospace. Corrosion considerations.