Search for dissertations about: "magnetite"

Showing result 1 - 5 of 95 swedish dissertations containing the word magnetite.

  1. 1. Interaction of magnetite with soluble silicates and bentonite : implications for wet agglomeration of magnetite concentrate

    Author : Xiaofang Yang; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Physical Chemistry; Fysikalisk kemi; Chemistry of Interfaces; Gränsytors kemi;

    Abstract : Iron ore green pellets are produced by agglomeration of moist magnetite concentrates. The quality of green pellets is essential for the transportability and metallurgical benefits of the final product. READ MORE

  2. 2. Dephosphorization of magnetite fines : surface reactions, flotation kinetics and fuzzy logic application

    Author : Fenwei Su; Luleå tekniska universitet; []

    Abstract : The primary objective of the research work presented in this thesis is to investigate the influence of chemical and operational variables on the apatite flotation kinetics and to establish a suitable model using traditional method and fuzzy logic. The thesis consists of three parts, i.e. READ MORE

  3. 3. Surface Chemistry of Components on Aqueous Metal Working Fluids

    Author : Mats A. R. Tunius; Chalmers University of Technology; []
    Keywords : Micelle; water based; Magnetite; metal working fluides; microcalorimetry; adsorption; corrosion inhibition; Bolaform surfactant; 10-Decanedicarboxylic acid; Alumina; surface chemistry; 1; aggregation;

    Abstract : The aim of the work presented in this thesis is to contribute to an increased knowledge regarding the basic surface chemistry of water based metal working fluids, in particular the relation between aggregational behaviour in solution and the formation of technical important adsorption layers of e.g. READ MORE

  4. 4. Nanomagnetic and Micromagnetic Properties of Rocks Minerals and Sulphide Oxidation Products

    Author : Erik Eneroth; Berggrundsgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; physical geography; Geology; multi-domain; single-domain; ilmenite; magnetite; maghemite; hematite; pyrite; marcasite; fysisk geografi; Geologi;

    Abstract : Magnetic and related properties of rocks and products from oxidation of sulphide minerals have been investigated with magnetisation measurements (rocks and oxidation products), magnetic force microscopy (rocks), scanning electron microscopy (rocks and oxidation products), transmission electron microscopy (oxidation products), Mössbauer spectroscopy (oxidation products) and powder X-ray diffraction (oxidation products). The investigations have shown the following: During thermal oxidation of pyrite (cubic FeS2) and marcasite (orthorombic FeS2) in air, nano-crystals of a-Fe2O3 and g-Fe2O3 were formed. READ MORE

  5. 5. A Study on Vanadium Extraction from Fe-V-P Melts Derived from Primary and Secondary Sources

    Author : Mikael Lindvall; Du Sichen; Christiaan Pistorius; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vanadium; V; V2O5; V2O3; ferrovanadium; vanadiferous; titaniferous; titanomagnetites; magnetite; spinel; slag; experimental; free; spinel; converter; LD; BOF; solubility; equilibrium; selective; oxidation; hibonite; karelianite; Al2O3; CaO; SiO2; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : Vanadium extraction methods were developed for iron-vanadium-phosphorus (Fe-V-P) melts derived from processing of V-bearing titanomagnetites and steel slags. Studies on phase relationships of V slags were carried out to provide important understanding of the extraction processes. READ MORE