Avancerad sökning

Hittade 3 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Grundvatten i Aitiks gruvområde : En utvärdering av grundvattenkvalitet och provtagningspunkter

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Anna Bergström; [2019]
    Nyckelord :Groundwater; Copper mine; Sulphide oxidation; Groundwater management; Mine-water chemistry;

    Sammanfattning : The aim of this study was to evaluate the quality of the groundwater around the Aitik copper mine- one of Europe’s largest copper mine located 15 km outside of Gällivare, Sweden - as well the placement of the groundwater pipes around the area. The study also included a survey of what kind of terms, regarding groundwater that may become relevant in the future for an activity of Aitik’s size and type. LÄS MER

  3. 2. Survey of sulphates in process water of LKAB - Kiruna operation

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Industriell miljö- och processteknik; Luleå tekniska universitet/Mineralteknik och metallurgi

    Författare :Ebba Videll; [2019]
    Nyckelord :Sulphate; iron ore mine; process water; anhydrite; laboratory grinding; equilibrium calculations; mass balance;

    Sammanfattning : Sulphate-rich wastewater is an increasing concern for industries as LKAB. The water chemistry of the LKAB Kiruna water system is characterized by high alkalinity, high pH (pH 7.5-9.0) and high concentrations of chemical species and soluble minerals. LÄS MER

  4. 3. Wear and degradation of Co, Fe and Ni-based cemented carbides against sandstone and granite

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Felix Jacobson; [2018]
    Nyckelord :Cemented carbide; mining; drilling; granite; sandstone; mine water; wear; degradation; tribology; tribochemical; cobalt; nickel; iron;

    Sammanfattning : This diploma work is performed at Sandvik Mining and Rock Technology, Rock Tools division, a world-leading mining equipment manufacturer. The aim is to study the wear of cemented carbide rock drill inserts worn against granite and sandstone countersurfaces, with focus on the impact of binder phase composition and flushing agent chemistry. LÄS MER