Resumo

GROBLER, J.  e  ZIETSMAN, J.. The influence of trash minerals and agglomerate particles on spiral separation performance. J. S. Afr. Inst. Min. Metall. [online]. 2017, vol.117, n.5, pp.435-442. ISSN 2411-9717.  http://dx.doi.org/10.17159/2411-9717/2017/v117n5a5.

Understanding the influence of feed material mineral assemblage on spiral separation is paramount for the successful and consistent operation of a spiral plant. Plant stability is required to maintain high recovery of valuable heavy minerals (VHM). Standard material analysis methods used in the heavy mineral industry to evaluate spiral separation behaviour are unable to quantify performance differences in the case of large variations in feed assemblage. This study illustrates a systematic approach to evaluate spiral separation performance. This technique was applied on a four-stage spiral plant. The performance information was used in a circuit simulation to clearly illustrate the importance of correct setting of the spiral splitter position and resulting spiral mass loading to ensure optimal circuit stability and maximum VHM recovery.

Palavras-chave : spiral separation; zircon; recovery; optimization.

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