Gravity Separation & Concentration Methods

Gravity Separation & Concentration Methods

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Floatation using shaker table. (7 replies and 1 comment)

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Sam
5 years ago
Sam 5 years ago

This is an old school method I am trying to learn more about. Froth floatation on a shaker table. I don't mean done separately. Does anyone know anything about it? It was mentioned in a set of operating instructions for an RP-4 Shaker Table but not explained.

David
5 years ago
David 5 years ago

Hi Sam,

i don't think you use a shaker table to do froth flotation. Some gold may naturally want o float across the table, yes. In some cases, you need use a reagent to break the surface tension to stop the floatability that's causing gold loses.

Here is the RP4 user manual.

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b
Robert
5 years ago
Robert 5 years ago

If you search some of the older phosphate beneficiation literature you will find some details around this (agglomeration tabling  or  table flotation). Apparently it showed promise for decent recovery with coarser particles.

For example, http://eprints.nmlindia.org/4412/1/225-230.PDF

 

S
Sam
5 years ago
b
Robert
5 years ago
Robert 5 years ago

Another comment on this process. My experience is that the process is improved by:

  1. selection of reagent regime
  2. conditioning where air is ingested through the pulp 
David
5 years ago
David 5 years ago

Am sure glad I am not alone on here... reaffirms that it is not because I've never see God (or UFOs) that He does not exist.

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S
Sam
5 years ago
Sam 5 years ago

I was unclear about it. Global didn't know much but has friends who do. I agree with Robert that the methods discussed in phosphate literature is probably what they were getting at. I process ground ores. different types of ores from different mines. Manganese oxides in one location, sulfides in another, sulfides, free mill and lead in another. in either case, I have to grind pretty fine to free up the gold. -100. I also want to capture and concentrate my manganese from one of the claims, because there is so much of it.  In some cases 30% or better raw ore. It's too significant to ignore. An old miner from Phoenix, whom I did not know personally, and wish I did, said that you mine the most prevalent mineral. Gold and silver are incidental. He prospered well enough mining specular hematite and incidental gold and silver. Of course, he used a flotation cell. At the moment, I do not own one. you have to walk before you can run, so i have to go with what I have and develop as many tools and processes as I might need along the way. 

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Sam
5 years ago
Sam 5 years ago

At his point, I don't see any advantage to it for gold processing on an RP-4. I have seen soda ash and sodium silicate used as flocculants. Water clarity is an issue in recirculating systems. I think that water to solids ratio needs to be controlled. Perhaps using a mixing tank and keeping it stirred?

S
Sam
5 years ago
Sam 5 years ago

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