Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Optimering av bergtransporter i underjordsgruva
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
2015 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Detta examensarbete utfördes på LKAB, en mineralkoncern som tillverkar och levererar järnmalmsprodukter. Arbetet utfördes för företagets underjordsgruva i Malmberget och behandlar tillredningens bergtransporter. Tillredningen är den process som förbereder nya delar av gruvan för järnmalmsbrytning. Målsättningen med arbetet har varit att kartlägga hur transporterna av tillredningsberg styrs samt att kvantifiera en besparingspotential för dessa transporter. Om möjligt skulle även förbättringsförslag presenteras. Underlaget till denna studie har inhämtats på plats i gruvan i Malmberget genom möten och samtal med personal, egna observationer och granskning av interna dokument. Uppgifter om tillredningens bergtransporter har även samlats in i form av fraktstatistik och prisuppgifter. För att nå studiens mål har två olika angreppssätt valts. För att kartlägga hur transporterna av tillredningsberg styrs har en flödeskartläggning genomförts. För att kvantifiera en besparingspotential har jag sökt minsta möjliga transportarbete och jämfört detta med verkligt utfall. Studien visar att det finns en bruttopotential att minska transportkostnaderna med 3060 tkr per halvår, motsvarande ca 20 % av den totala transportkostnaden. Av detta står underjordstransporterna för 2041 tkr (13 %) och transport ut från gruvan för 1019 tkr (6 %). Studiens avgränsningar gör dock att stor osäkerhet råder kring besparingspotentialen för transport ut från gruvan. Genom att göra schakt tillgängliga redan i tillredningsskedet, ökar möjligheten att reducera transportkostnaderna ytterligare.

Abstract [en]

This thesis project was conducted at LKAB, a mineral group that manufactures and supplies iron ore products. The work was conducted for the company's underground mine in Malmberget and deals with the rock transport from the mine development. Development is the process which prepares new parts of the mine for iron ore mining. The goals of this work was to identify how the rock transport from the mine development is controlled and to quantify potential savings. If possible, improvement suggestions were to be presented. The basis for this study has been collected on the site of the mine in Malmberget through meetings and conversations with staff, own observations and review of internal documents. Details of the rock transport from the mine development have also been collected in the form of freight statistics and price information. To achieve the goals of the study, two different approaches were chosen. To identify how the transport of rock from the mine development is controlled, a process mapping effort was performed. To quantify the potential savings, I have sought the lowest possible transport cost and compared this with the actual outcome. The study shows that there is a gross potential to reduce transportation costs by 3060 kSEK per halfyear, corresponding to approximately 20 % of the total transport cost. Of this amount, underground transports account for 2041 kSEK (13 %) and transports out of the mine account for 1019 kSEK (6 %). However, the study's limitations makes the potential savings for transports out of the mine highly uncertain. If shafts are made available already in the development stage, there will be even further opportunities to reduce costs.

Place, publisher, year, edition, pages
2015. , p. 240
Series
Examensarbete inom industriell produktion ; 643
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-201653OAI: oai:DiVA.org:kth-201653DiVA, id: diva2:1073675
Examiners
Available from: 2017-02-13 Created: 2017-02-13 Last updated: 2017-02-13Bibliographically approved

Open Access in DiVA

fulltext(1987 kB)81 downloads
File information
File name FULLTEXT01.pdfFile size 1987 kBChecksum SHA-512
61cd5e21933c793f67df575418c81e6591cdf9d396cb97dfc84c74615a244f498b789cfe82c8bc7fe71dd9795c42ad5b8a06aa699b90e4a5ae42dab666970704
Type fulltextMimetype application/pdf

By organisation
Production Engineering
Mechanical Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 81 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 459 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf