Essays about: "kiirunavaara"

Showing result 6 - 10 of 22 essays containing the word kiirunavaara.

1. 6. 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

3. 7. Uranium Mineralizations at Kiirunavaara,Northernmost Sweden

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Diego Segovia Menard; [2022]
   Keywords : kiirunavaara; uranium; EPMA; water; hydrothermal;

   Abstract : 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. READ MORE

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

   University essay from Uppsala universitet/Institutionen för geovetenskaper

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

   Abstract : 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. READ MORE

5. 9. Towards Understanding slag build-up in a Grate-Kiln furnace : A study of what parameters in the Grate-Kiln furnace leads to increased slag build-up, in a modern pellet production kiln

   University essay from Linköpings universitet/Institutionen för datavetenskap

   Author : Oscar Olsson; Uno Österman; [2022]
   Keywords : Grate-kiln; Slag; Interpretable machine learning; IID; independent and identically distributed; Kulsinter; pellets; slagg; slag; LKAB;

   Abstract : As more data is being gathered in industrial production facilities, the interest in applying machine learning models to the data is growing. This includes the iron ore mining industry, and in particular the build-up of slag in grate-kiln furnaces. READ MORE

6. 10. Detecting Slag Formation with Deep Learning Methods : An experimental study of different deep learning image segmentation models

   University essay from Linköpings universitet/Datorseende

   Author : Christian von Koch; William Anzén; [2021]
   Keywords : deep learning; deep neural network; computer vision; image segmentation; iron ore pelletising plant; furnace slag-detection; U-Net; PSPNet;

   Abstract : Image segmentation through neural networks and deep learning have, in the recent decade, become a successful tool for automated decision-making. For Luossavaara-Kiirunavaara Aktiebolag (LKAB), this means identifying the amount of slag inside a furnace through computer vision. READ MORE