Essays about: "ore"

Showing result 1 - 5 of 194 essays containing the word ore.

  1. 1. Geological characterization of rock samples by LIBS and ME-XRT analytical techniques

    University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

    Author : Nsioh Elvis Nkioh; [2022]
    Keywords : geological characterization; analytical techniques; LIBS; ME-XRT; SEM; element maps; SEM-EDS; secondary electrons; rock samples; automated ore microscopy; SEM-Zeiss Merlin; element weight percentages; element oxide percentages; scanning techniques; analytical methods; laser induced breakdown spectrometry; multi energy x-ray transmission; scanning electron microscope; carbon coating; mineralogical classification; element composition; rock chemistry; rock chemical composition;

    Abstract :      One of the major challenges in earth sciences and mineral exploration has been to determine with high accuracy and at a fast rate the elemental composition as well as the general chemistry of a rock sample. Many analytical techniques e.g. READ MORE

  2. 2. Some Like It Hot: Pre-heating Prior to Bioreactor Treatment Enhances Nitrogen Removal From Mine Drainage

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

    Author : Laura Nina Bettoni; [2022]
    Keywords : denitrification; nitrate removal; temperature; woodchip bioreactor; waste rock leachate;

    Abstract : Ammonium-nitrate based explosives (NH4NO3) used within the operations of Kiruna iron ore mine release nitrate (NO3-) into the environment, potentially having adverse effects on local river-systems. One way of reducing NO3- impacts to the environment is through a woodchip denitrifying bioreactor (DBR). READ MORE

  3. 3. Improving Availability of the Pelletization Process

    University essay from Luleå tekniska universitet/Institutionen för ekonomi, teknik, konst och samhälle

    Author : Emil Andreasson; Pontus Åhman; [2022]
    Keywords : Availability; Predictive Maintenance; Pelletization; Statistical Process Control; Refractory Material; DMAIC;

    Abstract : The Grate-Kiln-Cooler process is a commonly used method of sintering during iron ore pelletization, where the pellets are formed, dried, and hardened. The pellets are oxidized in the rotating Kiln, turning magnetite (Fe3O4) to hematite (Fe2O3), making the pellets attain suitable metallurgical attributes for further processing. READ MORE

  4. 4. Circularity of aluminium: Mapping difficulties in scrap circulation : A literature study and interviews with actors with focus on aluminium circulation in Sweden

    University essay from KTH/Materialvetenskap

    Author : Felix Fernström; Erik Karpe; Paul Thellenberg; [2022]
    Keywords : Aluminium; Aluminium alloys; contaminants; impurities; scrap; tramp elements; Aluminium; aluminiumlegeringar; föroreningar; orenheter; skrot; spårämnen;

    Abstract : Aluminium has great properties that are utilised the world over, but the production of primary aluminium is very energy intensive. In order to reduce the energy-cost, the aluminium can be recycled by re-melting aluminium scrap. READ MORE

  5. 5. A Minefield in Sápmi: A text analysis regarding Kallak K nr 1

    University essay from Lunds universitet/Statsvetenskapliga institutionen

    Author : Ida Fahlstedt; [2022]
    Keywords : Sápmi; Sami people; mines; mining industry; government of Sweden; cultural violence; structural violence; direct violence; indigenous rights; Law and Political Science; Social Sciences;

    Abstract : This thesis is a text analysis regarding the processing concession of Kallak K nr 1, an iron ore deposit located in Sweden outside of Jokkmokk. On March 22, 2022, processing concession was granted the Jokkmokk Iron Mines AB. READ MORE