Dewatering: Thickening, Filtering, CCD, Water Treatment & Tailings Disposal

Dewatering: Thickening, Filtering, CCD, Water Treatment & Tailings Disposal 2017-04-04T06:57:46+00:00
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Titanium dioxide Sands AMD (4 replies)

2 years ago
Obersturmbann 2 years ago

Does anyone have any dealings with titanium dioxide mines?

To be more specific I am looking at sand’s AMD/sulphuric acid issues.

Marshal Meru
2 years ago
Marshal Meru 2 years ago

Heavy mineral sands are usually fairly devoid of sufide minerals and therefore the potential for AMD generation is 'usually' minimal. However, if the deposit or part of the deposit has been in an anoxic environment with enough organic matter, then secondary sulfide minerals could form within the sands following deposition.

This is the kind of thing that you see in acid sulfate soils and there are examples of excavations in sand dune complexes that have resulted in acid release issues (the desalination plant near Bendigo, in Australia is a good example). I cannot think of any specific examples of this occurring in mineral sands but it is possible if conditions are right for it.

John Koenig
2 years ago
John Koenig 2 years ago

Do titanium dioxide mines not use a large quantity of sulphuric acid in their mining process? This is assuming they are going the sulfate route as opposed to the chloride process.

2 years ago
Oberfuhrer 2 years ago

Looking at the sulfate process, this does rely on sulfuric acid.

Carl Jenkins
2 years ago
Carl Jenkins 2 years ago

We have recently run titanium dioxide mine produced water through our process with great success. We recovered 100% of the sulphuric used and converted the remaining salts into potassium nitrate, ammonium sulfate and sodium chloride. We also removed all radioactive salts and recovered 95% of the water. I would like very much to speak to someone who has experience with tio2 produced water.

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