none

GOING FOR GOLD WITHOUT CYANIDE

28-08-2018
by 
in 

CSIRO has produced Australia’s first gold using a novel nontoxic chemical process that can provide an alternative to cyanide and mercury to extract the precious metal. The trial was conducted with gold miner Eco Minerals Research at a demonstration plant in Menzies, Western Australia.

Cyanide is most commonly used in global gold production, but the toxicity of the chemical is leading to ever more-stringent regulations. And several regional agencies in the USA, South America and Europe have banned the use of cyanide for gold extraction.

The new CSIRO process uses nontoxic thiosulphate in place of cyanide, with a simple process flowsheet that means the costs of setting up a process plant are dramatically reduced. A typical cyanide-based processing plant costs around $30 million, whereas the new technology has a lower capital investment costing as little as $2-2.5 million to build.

It could be a game-changer for Eco Minerals Research, which has its sights set on becoming the first Australian producer to go cyanide-free.

“The first gold is a major milestone in our progress towards becoming one of the world’s first green gold producers,” says Eco Minerals Research Managing Director Paul Hanna.

“In close collaboration with CSIRO we’ve gone through the design, engineering and fabrication stages and set up a processing facility in Menzies, delivering the first gold pour in just 10 months, which is a fantastic achievement.”

 

Related news & editorials

  1. 05.08.2021
    05.08.2021
    by      In
    In Australia, the food and beverage sector accounts for 32% of the country’s total manufacturing turnover and is reported to be worth around $122 billion (Octet 2020). New Zealand, on the other hand, is a major food and beverage exporter, with the industry accounting for 46% of all goods and... Read More
  2. 04.08.2021
    04.08.2021
    by      In
    The Australian High Court has made a historic decision on casual employment. Due to the significance of this decision, Industry Update has decided to republish the Australian Resources & Energy Group's response in full, as a representative of the voice of industry.
    Australian Resources and... Read More
  3. 03.08.2021
    03.08.2021
    by      In
    For a fully automatic hitch feed, single mitre band saw; a great option is the Metalmaster EB-330FAS from Hafco, designed for repetitive cutting of small to medium sized sections – in single or in pack forms.
    The EB-330FAS NC swivel head metal cutting band saw features an automatic hitch feed with... Read More
  4. 02.08.2021
    02.08.2021
    by      In
    NHP is set to be the new home of Stanilite® emergency lighting and monitoring systems throughout Australia, commencing 1st September 2021.
    The appointment of NHP as the sole distributor for Stanilite® provides for a long term, secure distribution of the product range and position Stanilite® as a... Read More
Products
Suppliers