Gekko Systems and CSIRO are joining forces to commercialise new technology to allow gold plant operators to determine the gold content in mineral processing slurries in real time.
Built on X-ray fluorescence techniques patented by CSIRO, the OnLine Gold Analyser (OLGA) is capable of detecting ultra-low levels of gold and other elements from a continuous process stream.
This will help plant metallurgists and operators to monitor and adjust their operations in real time in order to increase recovery and minimise gold losses from process excursions.
“This is a significant breakthrough in online XRF analysis for mineral processing operations,” said Nick Cutmore, research director for CSIRO’s Sensing and Sorting program.
Gekko Systems group manager of innovation and collaboration Richard Goldberg said the company was already talking with a selected number of operations keen to trial the new technology at their mine sites.
Following the successful testing of the unit in a controlled environment, initial field trials with an Australian gold mining company are being planned for late 2017/early 2018.
The new technology will complement Gekko’s Carbon Scout measurement system, which has reached the commercial release stage following a collaboration agreement with Curtin University.
The self-contained device collects slurry samples from Carbon In Pulp and Carbon In Leach tanks to determine the distribution of the activated carbon in the pulp for each tank, to an accuracy of ±0.5 grams of carbon per litre of pulp.
Gekko Systems managing director Elizabeth Lewis-Gray said the technology offered gold mine operators a real solution to minimise their soluble gold losses.
“At Gekko we strongly believe that the new Carbon Scout technology can make the difference between storing gold in the bank, rather than in tailing dams,” she said.