Gold Processing

The at-line analysis of gold in impregnated stripping solutions during the electrowinning process is demonstrated.


Gold ore processors commonly utilize the cyanide leaching technique to recover trace gold content. After the gold is leached out of the ore, it is typically absorbed onto activated carbon in processes such as Carbon-in-Pulp (CIP), Carbon-in-Leach (CIL), or Carbon Column (CC). Once absorbed, the gold is stripped from the Carbon and the impregnated stripping solution fed into the electrowinning process where the gold is recovered by electrolysis. By measuring the gold in the stripping solution at-line, operators can quickly and easily determine when the solution will be barren of gold, significantly improving the plant’s efficiency. The Rigaku NEX DE offers a simple and low cost at-line analytical technique for measuring such solutions. Non-technical operators obtain results in as little as 100-300 seconds without the need for special sample preparation, sample conditioning or technical knowledge.

Request a PDF copy of this report.

As a premium high performance benchtop Energy Dispersive X-ray Fluorescence (EDXRF) elemental analyzer, the new Rigaku NEX DE delivers wide elemental coverage with a easy-to-learn Windows®-based QuantEZ software. Non-destructively analyze from sodium (Na) through uranium (U) in almost any matrix, from solids and alloys to powders, liquids and slurries. Read more...

Ask for more info