1 Micron Grinding - Grinding & Classification Circuits - Metallurgist & Mineral Processing Engineer

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1 Micron Grinding (4 replies and 3 comments)

7 years ago

Assuming a new technology allowed economical and rapid 1 micron grinding - What material would you grind to achieve high recovery rates and take advantage of a lower processing cost of fine material?

Asking the same question in a different way - What material has potentially excellent economics that have not been realized due to lack of cost effective technology to grind the material to 1 micron and effectively classify and separate the components by weight?

Markala

7 years ago

Markala 7 years ago

Do you have such a device? I have a material that may be a good application for such a thing.

williamcavalier

7 years ago

Is this material you own or would source from a third party?

Marshal Meru

7 years ago

Marshal Meru 7 years ago

Most likely high grade refractory pyritic fine grained gold concentrates prior to cyanidation.

williamcavalier

7 years ago

Would you consider electron microscope images of processed material useful in an initial determination of what subsequent processing might be necessary?

Markala

7 years ago

Markala 7 years ago

I own the material and process ~200 mt per year. currently crush/ball mill/jet mill. not sure if you want to supply a devise, or perform the processing. can you clarify pls? i'm more inclined to purchase a device

williamcavalier

7 years ago

We have the milling device. Material can be milled to 1 micron but different materials have different optimum sizes. We can mill to necessary size. Perhaps we can discuss a cooperative effort to mutual advantage.

KPvanderWielen

7 years ago

KPvanderWielen 7 years ago

For most applications 1 micron is too fine, you'll slime the feed. Industrial minerals do go this fine though for making products for specific applications, and as said before gold leaching may benefit.

With the right media there's technologies out there that'll go down to this range, each with its advantages/disadvantages. Ultimately though, you're still stuck with physics and economics, there's no magic bullet that halves energy requirements and suddenly makes this economic.

Determining grind size is easily done by SEM, but if you're looking towards submicroscopic gold you need to consider dynamic SIMS or similar.

http://www.grindingsolutions.com/

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