Monitoring a field application of a Green Liquor Dregs-till mixture in a sealing layer on top of sulfidic mine waste

Nigéus, Susanne (författare): Luleå tekniska universitet,Geovetenskap och miljöteknik

Maurice, Christian (författare): Luleå tekniska universitet,Geovetenskap och miljöteknik,Ramböll Sverige AB, Luleå

(creator_code:org_t)

2018
2018
Engelska.
Ingår i: 11th ICARD | IMWA | WISA MWD 2018 Conference. - 9780620806503 ; , s. 57-63

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Abstract Ämnesord

Stäng

Sul dic mine waste le unattended and in contact with oxygen oxidize and have potential to produce acid rock drainage (ARD). A typical method in Sweden to stop sul de oxidation is to apply a dry cover on top of the mine waste. Using the non-hazardous industrial residue Green Liquor Dregs (GLD) in the cover is useful for the mining industry and the industry providing the residue and a large bene t for the environment. In this study, the e ectiveness of a mixture of till and 10 wt. % of GLD in a dry cover was studied by monitoring temperature, oxygen- and moisture content. e conclusion is that the sealing layer in una ected by frost, the oxygen concentrations are decreasing with time, but not in depth and the sealing layer with GLD-till mixture seem to be nearly saturated.

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