Essays about: "iron-ore"

Showing result 16 - 20 of 92 essays containing the word iron-ore.

1. 16. The impact of snow loads on snow galleries : An initial evaluation of the snow galleries on the Iron Ore Line in Northern Sweden

   University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Author : Karin Björnlinger; [2022]
   Keywords : Snow load; snow gallery; steel; FEM; railway; cobweb effect; utilizations grade; Snölast; snögalleri; stål; FEM; järnväg; spindelnätseffekten; utnyttjandegrad;

   Abstract : The snow galleries along the Iron ore railway line in northern Sweden have had major problems in recent years due to increasingly large snow loads. Despite great efforts reducing the loads by shoveling off the snow, several of the galleries have been damaged. READ MORE

3. 17. 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. 18. Extraction of Backfilled Tailings in the Dannemora Mine – Economic Potential and Rock Stability Assessment

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : John Winlund; [2022]
   Keywords : backfilled tailings; Dannemora mine; iron ore; rock stability; stopes; återfylld anrikningssand; Dannemoragruvan; järnmalm; bergstabilitet; öppna brytningsrum;

   Abstract : The cut-off grade determines what rock mass are economic to mine. At the Dannemora mine, in eastern Bergslagen, Sweden, previously processed ore generated tailings (enrichment sand) with an iron content of 21-22 % that was backfilled into large open bodies (stopes) in the mine between 2013-2015. READ MORE

5. 19. Integration of SMRs with Steel Industry

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : David Carlsén; [2022]
   Keywords : Small Modular Reactor; SMR; Xe-100; Pink Hydrogen; Electrolysis; SOEC; Steel; Iron; DRI; DRP; Energy; Industry; Transition; Technology and Engineering; Chemistry; Earth and Environmental Sciences;

   Abstract : The steel industry is with its high emissions an important sector to transform from fossil-fueled to fossil-free. In recent years, the technology development has accelerated quickly regarding iron ore reduction using hydrogen produced from electrolysis within the EL-DRP-EAF steel production route. READ MORE

6. 20. 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; Social Sciences; Law and Political Science;

   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