Modellbyggnad och simulering av Kiln styrning

• Main Author: Lindqvist, Anna
• Format: Bachelor Thesis
• Language: Swedish
• Published: 2015
• Subjects: Technology; Teknik; Kiln; positionering; bärhjul; Kiruna; Luleå
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-58419

The project which is presented in this report is focused on the positioning of the support rollers connected to the Kiln in one of the pelletizing plants in Kiruna at LKAB. Kiln is a rotating oven where the pellets are sintered, which is one of the steps in the pelletizing process. The support rollers are used to position Kiln in an axial or vertical direction, by either skewing the rollers or positioning the whole center of the rollers towards or away from the Kiln. The plan for this project is to be used as a preparatory work for a construction of an atomized system for adjustment of the support rollers for Kiln at LKAB in Kiruna. An atomized adjustment system can possibly simplify the procedure of Kiln positioning, increase the lifespan of the system and increase the reliability of the whole system.This report can also lead to improvements by being used as a support during positioning of support rollers. A support system for Kiln positioning can contribute to avoid production disturbances. Product disturbances can occur because of damaged components such as damaged support wheels or parts of the Kiln driveline. Less production disturbances increases the availability of the Grate-Kiln plant and thereby increases the profitability for LKAB. The aim of this project has been to develop a calculation model which can show the reactions of Kiln when the support rollers are adjusted. The assignment was also to include the heating and cooling of Kiln and to have considerations regarding the gear contact in the driveline. One part of the assignment was also to document the damages that can occur because of inaccurate positioning of the support rollers. The final step in this project was to propose optimized positions for the support rollers.This project is the final assignment before examination from the M.Sc Student in Mechanical Engineering program at the University of Technology in Luleå LTU in Sweden. The main part of this project has been to develop a calculation model. The calculation model is built in a Matlab ...