Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction

Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction 2017-04-04T06:57:36+00:00
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Installing a Cyanide analyzer (5 replies)

1 year ago
Gruppen 1 year ago

What is the best way to install a cyanide analyzer online for the leaching process? Someone has diagrams or similar?

Carmen Ibanz
1 year ago
Carmen Ibanz 1 year ago

The first question is what form of cyanide you want to measure, given that mill tailings contain free cyanide, gold cyanide, WAD cyanide and other more stable forms.
One cannot therefore plug in a "pH style" probe to measure "cyanide".

The top end system developed by CSIRO-was installed about 5 years ago at the Cowal Gold Mine. They use high performance liquid chromatography (HPLC) to provide accurate quantitative determinations of the chemical composition of "samples taken along the course of the ore treatment process".

It is NOT an online system.
A somewhat cheaper system is Gas Diffusion which takes about 2 hours to measure free cyanide.

Atmospheric cyanide gas analysis can and should be a continuous monitoring but this may not be what you are looking for, but something every cyanidation plant needs.

1 year ago
Gruppen 1 year ago

The process is to measure free cyanide. On the other hand you could give me information about CSIRO system?Regarding the gas diffusion system! You know if this is used to measure free cyanide leaching processes?

Tony Verdeschi
1 year ago
Tony Verdeschi 1 year ago

From your question, I assume you have an idea of what cyanide analyzer you want to install. Is this correct?

Jean Rasczak
1 year ago
Jean Rasczak 1 year ago

Contact these guys, they are South Africa based however do have many clients across the globe with 20 years’ experience. I have personally found their products to be process plant robust, requires minimal maintenance and low running costs. http://is.gd/DRyUQj. No affiliation.

1 year ago
Obersturmbann 1 year ago

There is a gas diffusion based system that is ideal for what you want to do. Reading is less than 3 minute cycle. It is designed for leaching circuit control.

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