Essays about: "anrikningssand"

Showing result 1 - 5 of 6 essays containing the word anrikningssand.

  1. 1. Extraction of Backfilled Tailings in the Dannemora Mine – Economic Potential and Rock Stability Assessment

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : John Winlund; [2022]
    Keywords : backfilled tailings; Dannemora mine; iron ore; rock stability; stopes; återfylld anrikningssand; Dannemoragruvan; järnmalm; bergstabilitet; öppna brytningsrum;

    Abstract : The cut-off grade determines what rock mass are economic to mine. At the Dannemora mine, in eastern Bergslagen, Sweden, previously processed ore generated tailings (enrichment sand) with an iron content of 21-22 % that was backfilled into large open bodies (stopes) in the mine between 2013-2015. READ MORE

  3. 2. Analysis of seepage, contaminant transport, compaction and safety of the Zhaoli ditch dam, a tailing reservoir : A modeling study of a tailing reservoir with GeoStudio

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Veronika Wei Wang; [2021]
    Keywords : upstream method; Geostudio; tailings reservoir; tailings dam; dam; seepage; contaminant transport; compaction; stability; damm; föroreningstransport; vattenläckage; stabilitet; säkerhet;

    Abstract : Inthe mining industry people remove rock from the ground to obtain a metal ore. Afterprocessing , the uneconomic fraction called tailings is deposited as a slurry in large reservoirs . READ MORE

  4. 3. Geochemical tracing of Arsenic sources in groundwater at the remediated Storliden mine, Skellefte district

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Matilda Edvardsson; [2021]
    Keywords : Arsenic; groundwater; Sulfide oxidation; Arsenopyrite; Storliden; remediation; Arsenik; grundvatten; sulfidoxidation; Arsenikkis; Storliden; efterbehandling;

    Abstract : The Swedish mining industry has changed from the historical situation with several smaller mines to the present situation with a few, bigger mines. This results in presence of abandoned mines around Sweden. Remediation of mines is regulated by legislation and the present demands are considerably higher than it was some decades ago. READ MORE

  5. 4. Fines Content and Density Effects on Tailings Behaviour : A Laboratory Study on Geotechnical Properties

    University essay from Luleå tekniska universitet/Geoteknologi

    Author : Viktor Wiklund; [2018]
    Keywords : strength; compressibility; permeability; anrikningssand; hållfasthet; konsolidering; permeabilitet;

    Abstract : Tailings are a rest product from the extraction of metals and minerals, and is therefore produced in large volumes by all mining companies. One common way to store tailings material is to deposit it as a hydraulic slurry on a tailings impoundment, where the tailings are held in place by tailings dams. READ MORE

  6. 5. Closure of Lilla Bredsjön Tailings Dam : an Evaluation of the Long-Term Dam Safety Measures

    University essay from KTH/Vattendragsteknik

    Author : Jenny Bramsäter; [2017]
    Keywords : tailings dams; seepage; pore pressure; slope stability; slip surfaces; long-term stability;

    Abstract : The mining industry contributes to enormous amounts of waste all over the world, which places high demands on tailings dams. In Sweden, there are strict regulations regarding the management and treatment of tailings dams, but some dams that were built before these regulations existed still pose a threat to the environment. READ MORE