Finnish equipment manufacturer Metso Outotec says its “next generation” OKTOP reactor for gold carbon-in-leach (CIL) and carbon-in-pulp (CIP) plants can cut electric energy consumption by up to 50% and reduce gold losses caused by activated carbon breakage “compared to industry benchmarks”.
The company says more than 1000 OKTOP reactors have been sold since the first iteration came onto the market in 2006.
“It represents the most sustainable cyanide leaching technology on the market,” it said.
Metso Outotec director for gold processing solutions, Jan Van Niekerk said CIL reactor deployments were typically split scope deliveries from several suppliers.
“We can now offer a comprehensive solution optimised for gold cyanide leaching and recovery in the form of a highly productised reactor design based on our extensive expertise of over one thousand delivered reactors, novel innovations, and state-of-the-art digital features,” he said.
Metso Outotec said its patented OKTOP FlowBottom technology reduced agitation intensity, which enabled homogeneous suspension of solids that reduced mixing power and decreased carbon attrition and related gold losses.
SandSense technology controlled and optimised agitator rotation speed to alleviate wear, improve energy consumption, and detect upstream problems. CarbonSense in-situ measurement helped minimise gold solution losses.
“Combined with the CIL optimiser, it automatically monitors and controls carbon concentration and cyanide dosing using continuous data measurement,” the manufacturer said.