Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide) 2017-04-04T06:57:31+00:00
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Rectorite Clay (4 replies)

Victor Bergman
1 year ago
Victor Bergman 1 year ago

We are looking for (pyrite) sulfide separation experts and equipment. We need to separate the pyrites from a k-Rectorite clay. Both the pyrites and the clay will be ingested by humans and animals.We have a rare raspberry pyrite that Scientists working with Arizona State University have been researching for 4 years and test results show that it kills 100% of the following pathogenic disease bacteria within a 24 hour period.

Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli, Salmonella, Methicillin-resistant Staphylococcus aureus (MRSA) and Extended-Spectrum beta-lactamase (ESBL)

Carl Jenkins
1 year ago
Carl Jenkins 1 year ago

You need to provide some details about the pyrite and clay, e.g., size, liberations, etc.

1 year ago
Amar 1 year ago

I have the experience of floating pyrite. I have designed my own plant and operated it. To know your problem I need to know more about mineralogy, pyrite interlocking, grain size, etc.

We do separate clay in iron ore processing using Classifiers, cyclones, etc. Flotation is one such technology to separate pyrite form clay.

1 year ago
Hauptsturm 1 year ago

You certainly need to provide more information. Intended treatment rate, host material, mineral size distribution, and available equipment (if any)? As much information as possible for us to help you! Conventional pyrite recovery methods are inappropriate as reagents required may not be ingested by humans.

John Koenig
1 year ago
John Koenig 1 year ago

By "raspberry" do you mean framboidal? Aggregates of blobby, micron-sized crystals?

If so, a very difficult problem! Framboidal pyrite (FP) generally forms under anoxic/reducing conditions, and often associated with carbonaceous material. FP can also be a sink for other metals in the system, some of them toxic to bacteria, e.g. silver, and others toxic to humans. They oxidise quite quickly, have a high surface area (reactivity and reagent demand) and are in a similar size range as clays. Fine particle flotation might work, provided there is sufficient turbulence/collision frequency, but would need good froth washing to reject entrained clays.

As others have commented, the other part of the mineralogy needs to be known. What other sulfides, for example, are present. What potentially hydrophobic clays? General composition data?

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