Cleaner gold extraction technology goes global

The process is effective by way of a combination of potassium permanganate and glycine, which partially decompose to type insoluble manganese dioxide, insoluble calcium oxalate, and nitrogen – all of which are normally occurring, small-toxicity chemical compounds. 

With lower concentrations of potassium permanganate becoming included to the alkaline glycine process at ambient temperature, it is achievable to leach 85.1% of gold from an ore deposit. This is an extraction fee related to that of cyanidation.

“Curtin researchers professor Jacques Eksteen and affiliate professor Elsayed Oraby spent yrs acquiring this improved leaching process, increasing the technology’s applications and building it much more efficient for extracting gold and other precious deposits,” Curtin’s director of commercialization Rohan McDougall reported in a media statement.

“Now that it has produced it to the world-wide sector, this engineering will present a lot of benefits to useful resource industries, such as staying a a great deal much more productive, secure and environmentally-welcoming extraction method.

Leaching or separating gold and other treasured metals from an ore deposit or other resources has long depended on cyanide as a key ingredient, which is a extremely harmful chemical compound that, when mishandled, can have a destructive impact on persons and the natural environment. 

It is also incredibly high priced to detoxify cyanide at the industrial level and even if this is achieved, the risks linked with transporting, handling and processing the chemical remain.

By establishing the glycine leaching technological innovation, as a result, the researchers have optimized the method to allow the extraction of a variety of valuable and base metals.