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ARSENIC REMOVAL TECHNOLOGIES<br />
Method Content Objectives<br />
MINERAL<br />
PROSESSING:<br />
FLOTATION<br />
SORPTION<br />
TECHNIQUES<br />
FOR WATER<br />
TREATMENT<br />
BIOPROSESSING:<br />
BIOLEACHING<br />
Laboratory scale study to find optimal<br />
flotation conditions for arsenic<br />
containing gold ores<br />
Lab-scale tests to find and apply costeffective<br />
sorption materials for Asremoval<br />
from mine waters<br />
Laboratory batch tests for side<br />
streams and waste materials<br />
Continuous leaching tanks for nickel<br />
concentrate in pilot-scale<br />
To produce high quality gold<br />
concentrate with very low<br />
arsenic grade and recovery<br />
To develop techniques for<br />
removal of trace level Asconcentrations<br />
as a polishing<br />
step before discharge to the<br />
environment<br />
To reduce the amount of<br />
released arsenic and minimize<br />
environmental impacts of<br />
arsenic containing streams<br />
and waste materials<br />
BIOPROCESSING:<br />
BIO-OXIDATION<br />
Fluidized-bed reactor for waste waters To stabilize arsenic binding it<br />
into the iron precipitate<br />
Raisa Neitola, GTK Mintec<br />
24.10.2012 9
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