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Pilot plant for gold ore roasting
Gold ore
Video of fluidized bed reactor
Array

Gold ore roasting

The growing worldwide awareness of climate change and pollution increases the demand for environmentally friendly and economically optimized processes. InVerTec has developed a microwave-assisted process to extract gold from ore.

Microwave-assisted roasting of gold

Gold and carbon formation inside the ore
Gold and carbon formation inside the ore
  1. Carbon inside the gold ore is selectivliy overheated by MW.
  2. Carbon is partially ignited.
  3. Gold extraction from the ore is more efficient.

Flowchart of a modern gold extraction plant

Flowchart of a modern gold extraction plant

Optimization of gold yield

Optimization of gold yield

Project time: 2000-2005

Activities: Research and reactor development

Project partner:
Outotec GmbH

Achievements: Improvement of gold yield from 90% to 95%