InFAQ’s – A series of your questions answered


A weekly Q&A series

What is Glycine?


A: Glycine is an amino acid that appears commonly in nature and is present in our bodies. However it is also produced synthetically and so is traded as a commodity. It is a very benign substance.

Can you buy Glycine in bulk? Is it readily available?


Answer: Glycine is sold in different grades. This varies from high purity manufactured for the pharmaceutical industry as well as a standard bulk product which we would use for our process. The standard product is adequate for any glycine leaching application. Currently Australia does not manufacture it but is a user. China and the US are the major producers of it and there’s several other countries also manufacture it. We did a market study a few years ago that suggested that any uptick in projected use in the mining industry could be easily accommodated within the current supply/demand balance without material impact on pricing.

Does water quality affect the process?

Answer: With the testwork we’ve done so far with hypersaline and seawater we’ve seen no adverse effect. We’ve just recently had a partner complete a pilot plant using seawater and they successfully demonstrated the technology.

Can you comment on the difference between Cyanidation and GlyCat in terms of recovering gold from solution?

Answer: There’s no real difference between Cyanide and Glycat – they both require carbon to recover, and so, we’ve proven in pilot campaigns (both CIP and CIL) that we can effectively recover the gold from solution.

How is glycine reused/reusable?

Answer to be released 14th April, follow us on LinkedIn to be the first to see it!

How would you assay for glycine in the recycled water to determine appropriate addition?

Answer to be released 28th April, follow us on LinkedIn to be the first to see it!

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