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Systematic Diagnosis of Flotation Circuit Performance Based on Process Mineralogical Methods
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.
2014 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

Operators of industrial flotation circuits experience every now and then situations where the processing performance of the plant is poorer than expected. Usually this leads to a continual and useless debate whether the problems are related to the ore properties or to the process. This paper presents a systematic approach to problem diagnosis using an analysis method based on process mineralogical tools. The diagnosis first requires a base-case analysis where the key process streams of the circuit have been sampled and studied by applying mineral process simulation in combination with the particle tracking technique, i.e. by balancing mixed particles of different mineral composition. This creates the base model of the flotation process against which the deviations are compared. Common performance problems are divided in three groups, which refer to recovery, grade and impurity. The mineralogical reason can in each case be a change in (i) mineral assemblage, (ii) head grade, (iii) liberation degree, or (iv) mineral associations. The diagnosis progresses by classifying the indications and by ruling out causes by means of process mineralogical methods. The procedure is presented as a diagnosis chart with suggestions for how to cure the problem. To illustrate the application of the method several practical examples are presented.

Place, publisher, year, edition, pages
2014.
Keyword [en]
process mineralogy, flotation, mineral processing, Chemical engineering - Metallurgical process and manufacturing engineering
Keyword [sv]
Kemiteknik - Metallurgisk process- och produktionsteknik
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing; Future mining (AERI)
Identifiers
URN: urn:nbn:se:ltu:diva-26852Local ID: 01c24023-6398-41a1-8562-eeaea0c0d9eeOAI: oai:DiVA.org:ltu-26852DiVA, id: diva2:1000032
Conference
International Mineral Proceeding Symposium & Exhibition : 15/10/2014 - 17/10/2014
Note
Godkänd; 2014; 20141019 (perlam)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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fulltext(416 kB)256 downloads
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Lamberg, PerttiRosenkranz, Jan
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CiteExportLink to record
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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
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  • asciidoc
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