Sökning: "anhydrite"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet anhydrite.

1. 1. SURVEY OF SULPHATE-BEARING MINERALS IN LKAB'S TAILING POND

   Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

   Författare :CELESTINE IFEANYI UGWUOKE; [2023]
   Nyckelord :Tailings; Sequential extraction; Mineralogy; Sulphate;

   Sammanfattning : This research project investigated the high concentration of sulphate in a tailing pond at LKAB and the characteristics and behavior of sulphate minerals in different areas of the pond. The sampling of the tailings was carried out at Nine stationary sampling points. LÄS MER

3. 2. Uranium Mineralizations at Kiirunavaara,Northernmost Sweden

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Diego Segovia Menard; [2022]
   Nyckelord :kiirunavaara; uranium; EPMA; water; hydrothermal;

   Sammanfattning : In recent years, a variably high amount of uranium (U) and radon (Rn) were found in the water and airof the Kiirunavaara mine in Kiruna, northern Sweden. The Swedish Agency for Marine and WaterManagement (Havs och vattenmyndigheten) has maximum limits for “special polluting substances” inwater that is released to natural recipients (HVMFS 2019:25), therefore, the mining company LKAB,owner and operator of the Kiirunavaara mine, decided to conduct a study to investigate the issueregarding these findings, triggering this master thesis. LÄS MER

4. 3. Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Giorgios Doulamis; [2022]
   Nyckelord :Kiirunavaara; Point Load test; Leeb hardness test; intact rock strength; correlation factor;

   Sammanfattning : The geotechnical parameters of the different lithologies are of great importance regarding mining, infrastructures development and safety. The main aims of this thesis project are the evaluation of the previously acquired point load tests (PLT) data and the acquisition of a larger set for the various lithologies and alterations. LÄS MER

5. 4. 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

7. 5. Oxidative Degradation of Polyether In Contact with Minerals

   Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

   Författare :Sandra Dabbagh; [2011]
   Nyckelord :adhesive; polyether; degradation; oxidation; glue;

   Sammanfattning : Oxidative degradation of adhesives based on silane terminated polypropylene oxide and polypropylene oxide (PPO) was studied. The combination of rapeseed oil and PPO as plasticizer in the parquet adhesive gave rise to oxidative degradation in contact with screeds of certain minerals. LÄS MER