Search for dissertations about: "MINERALS"

Showing result 16 - 20 of 394 swedish dissertations containing the word MINERALS.

2. 16. Transporting highly concentrated slurries with centrifugal pumps : the thickened minerals tailings example

   Author : Thord Wennberg; Magnus Fahlgren; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

   Abstract : New technologies are continuously considered for the handling and deposition of tailings. With thickened tailings only a fraction of water used conventionally reaches the disposal area, thus limiting sizes of water holding dam facilities and areas to be rehabilitated. Heat may also be recovered with direct water circulation from the thickening. READ MORE

4. 17. Characterisation of Ugandan raw-minerals for firebricks -before and after sintering

   Author : John Baptist Kirabira; KTH; []
   Keywords : firebricks; kaolin; ugandan minerals;

   Abstract : Development of products which can be produced from acountry's natural resources is very important as far as theindustrialization of a nation and saving foreign exchange isconcerned. Presently, industries in Uganda and the other statesin the Lake Victoria region import allrefractory-related-consumables, as the demand cannot be metlocally. READ MORE

5. 18. Properties of Ugandan minerals and fireclay refractories

   Author : John Baptist Kirabira; Stefan Jonsson; Thomas Johansson; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; kaolin; clay; Ugandan minerals; fireclay; refractory; powders characterization; beneficiation; ceramics; mullite; Materialvetenskap; Materials science; Teknisk materialvetenskap;

   Abstract : Development of products which can be produced from a country’s natural resources is very important as far as the industrialization of a nation and saving foreign exchange is concerned. Presently, industries in Uganda and the other states in the Lake Victoria region import all refractory-related-consumables, as the demand cannot be met locally. READ MORE

6. 19. Hydrogen in nominally anhydrous silicate minerals : Quantification methods, incorporation mechanisms and geological applications

   Author : Franz A. Weis; Henrik Skogby; Peter Lazor; Jannick Ingrin; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NAMs; clinopyroxene; hydrogen; hydrothermal pressure; magmatic water content; zoisite; OH-dipole; Raman spectroscopy; FTIR; luminescence; proton-proton scattering;

   Abstract : The aim of this thesis is to increase our knowledge and understanding of trace water concentrations in nominally anhydrous minerals (NAMs). Special focus is put on the de- and rehydration mechanisms of clinopyroxene crystals in volcanic systems, how these minerals can be used to investigate the volatile content of mantle rocks and melts on both Earth and other planetary bodies (e. READ MORE

7. 20. Abundance and fractionation of rare earth elements in calcite and other secondary minerals in fractures in the upper kilometre of crystalline bedrock, SE Sweden

   Author : Olga M. Maskenskaya; Mats Åström; Kjell Billström; Linnéuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; secondary minerals; rare earth elements; isotopes; crystalline bedrock;

   Abstract : This thesis focuses on the geochemistry of secondary minerals, mainly calcite but also others such as fluorite and Ca/Al silicates, precipitated throughout the last 1.5 billion years in fractures of crystalline rock, SE Sweden. READ MORE