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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, Presentation (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
Keyword [en]
process mineralogy, flotation, mineral processing, Chemical engineering - Metallurgical process and manufacturing engineering
Keyword [sv]
Kemiteknik - Metallurgisk process- och produktionsteknik
Research subject
Mineral Processing; Future mining (AERI)
URN: urn:nbn:se:ltu:diva-26852Local ID: 01c24023-6398-41a1-8562-eeaea0c0d9eeOAI: diva2:1000032
International Mineral Proceeding Symposium & Exhibition : 15/10/2014 - 17/10/2014
Godkänd; 2014; 20141019 (perlam)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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Lamberg, PerttiRosenkranz, Jan
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