Prevention of Sulfide Oxidation in Waste Rock using By-products and Industrial Remnants a Suitability Study

• Prevention and mitigation of acid rock drainage from mining are decisive for limiting environmental impact. Five by-products and industrial remnants (lime kiln dust, blast furnace slag, granulated blast furnace slag, cement kiln dust and fly ash) were investigated for their suitability to prevent acidity and metal(loid)s during leaching from highly sulfidic (50wt%, sulfide) waste rock in small scale laboratory test cells. Variations in pH and electrical conductivity in leachate allowed differentiation between the different materials. Lime kiln dust (5wt%) and fly ash (1 and 2.5wt%) were observed to be the most suitable materials to prevent acidity and metal(loid)s leaching.

Subject headings

Natural Sciences  (hsv)

Earth and Related Environmental Sciences  (hsv)

Geochemistry  (hsv)

Naturvetenskap  (hsv)

Geovetenskap och miljövetenskap  (hsv)

Geokemi  (hsv)

Tillämpad geokemi  (ltu)

Applied Geochemistry  (ltu)