Sökning: "green liquor dregs"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden green liquor dregs.

  1. 1. Green liquor dregs-amended till to cover sulfidic mine waste

    Författare :Susanne Nigéus; Christian Maurice; Thomas Pabst; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Applied Geochemistry; Tillämpad geokemi;

    Sammanfattning : The mining industry produces massive amounts of waste that without treatment and in contact with oxygen can result in acid rock drainage (ARD) and increased leaching of metals. In Sweden, the common way to manage the mine waste after closure is to apply a dry coverage on top of the waste deposition. LÄS MER

  3. 2. Recycling of green liquor dregs in cover application on acid generating mine waste

    Författare :Susanne Nigéus; Jan Laue; Christian Maurice; Jenny Lindblom; Helge Hellevang; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geoteknik; Soil Mechanics;

    Sammanfattning : The mining industry generates massive amounts of waste that without treatment and in contact with atmospheric oxygen can cause the formation of acid rock drainage (ARD). In Sweden, the most common reclamation measure for mine waste is to apply a multi-layer cover on top of the waste deposit. LÄS MER

  4. 3. Green liquor dregs as sealing layer material to cover sulphidic mine waste deposits

    Författare :Maria Mäkitalo; Josef Mácsik; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Sammanfattning : Waste rock and tailings generated by sulphide ore mining often contains large amounts of iron sulphides which oxidize when exposed to atmospheric oxygen and may generate acidity. In the absence of alkaline minerals to neutralize this acidity, elements including harmful heavy metals become mobile. LÄS MER

  5. 4. Green Liquor Dregs in Sealing Layers to Prevent the Formation of Acid Mine drainage : From characterization to implementation

    Författare :Maria Mäkitalo; Bernd Lottermoser; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Sammanfattning : One of the mining industry’s main concerns is the management of waste rock and tailings generated by sulfide ore extraction. Upon exposure to atmospheric oxygen, iron sulfides oxidize producing acidity. LÄS MER

  7. 5. Alkaline by-products as amendments for remediation of historic mine sites

    Författare :Lotta Sartz; Bert Allard; Ernest Yanful; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oxidized mine waste; lime mud; green liquor dregs; fly ash; lime kiln dust; steel slag; water works granules; Oxiderat gruvavfall; mesakalk; grönlut; flygaska; filterkalk; stålslagg; vattenverksgranuler; NATURAL SCIENCES; NATURVETENSKAP; Environmental chemistry; Miljökemi; Enviromental Science; Miljövetenskap;

    Sammanfattning : Mining has been and still is an important industry in Sweden, it has strongly contributed to the standard of living we have today. Extraction of ore began in the 12th century, but did not come about frequently until the 16th century, which is often seen as the starting age for ore processing and metal extraction. LÄS MER