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Flockning och förtjockning i High-Rate-förtjockare – en jämförelse med konventionell förtjockarteknik och lamellsedimentering.
Dalarna University, School of Technology and Business Studies, Mining and Mineral Engineering.
2006 (Swedish)Independent thesis Basic level (degree of Bachelor)Student thesis
Abstract [sv]

In the process laboratory of Metso minerals (Sala) AB, continuous tests have been made with a laboratory unit High-Rate thickener. The tests are made in order to compare three methods of thickening techniques of suspended solids. The three techniques are High-Rate thickening, conventional thickening and lamella thickening. The High-Rate and the conventional trials are based on a continuous method, while the lamella thickener is based on batch trials. Because the lamella thickener is based on batch trials and there were some optimization problems with the adding point of the flocculant at the continuous trials, it was not feasible to compare the lamella thickener with the other two thickener types. On the other hand, since the optimization problems were the same for the other two methods there was no problem comparing them. The result of the comparison between the High-Rate thickener and the conventional thickener, was, that the High-Rate thickener manages to work at a higher rise rate with a lower consumption of flocculant than the conventional thickener. Seeing to the unit area that is needed by each thickener it is apparent that the conventional thickener demands a higher unit area than the High-Rate thickener to achieve the same amount of solids in the underflow. It has also been showed that the High-Rate thickener demands a lesser quantity of flocculant at the same amount of suspended solids in the feed than the conventional thickener.

Place, publisher, year, edition, pages
Filipstad, 2006. , 41 p.
Keyword [sv]
Flockning, förtjockning, sedimentation, lamellförtjockning, konventionellförtjockning, High-Rate förtjockning, HRT, förtjockningstekniker
Identifiers
URN: urn:nbn:se:du-2231OAI: oai:dalea.du.se:2231DiVA: diva2:518071
Uppsok
Technology
Supervisors
Available from: 2006-06-26 Created: 2006-06-26 Last updated: 2012-04-24Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • 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