Gold leaching is one of Oxymat’s key applications.
When extracting gold, the oxygen is the key element for gold ore processing as pressure oxidation, cyanidation.
Significantly increasing gold recovery and ore throughput, oxygen reduces cyanide cost and waste products.
OXYMAT on-site oxygen production is the best option to reduce logistic costs, as most mining sites or mineral processing plants are in remote areas.
4 Au(aq) + 8 NaCN(s) + O2(g) + 2 H2O(aq) → 4 Na[Au(CN)2](aq) + 4 NaOH(aq)
Benefits of using oxygen application in leaching process:
Increased Gold Recovery – Higher dissolved oxygen level in leaching process enhances the gold cyanidation, thus increasing gold extraction rate significantly.
Decreased Retention Time by Leaching – Conventional leaching time of 96/72 hrs can be reduced by up to 50 %.
Increased Ore throughput
Increased Silver Recovery – Silver is being dissolved in the leaching process in the same process reaction as gold.
Decreased Cyanide Consumption – The sufficient level of oxygen reduces the amount of cyanide required.
Decreased Waste Treatment – The reduction in the amount of cyanide needed in the leaching process also decreases the amount of cyanide that must be removed from the waste stream. The oxygen generated can be used as a feed gas to an ozone generator and injected directly into the waste stream as an environmentally friendly oxidizing agent.
Special design features include:
The capacity ranges up to 50 TPD oxygen
Low power consumption 0.8 – 1 kW/kg Oxygen
Low CO2 emission
Designed for durability in rough conditions and industrial
Quick on-site installation and startup
Optional container or frame-built solution
Remote control access
Large quantities of oxygen are consumed by nickel, lead
Smelters or iron processing.