Development of a brownfield tungsten project

Background

GSL carried out testing for the purpose of flowsheet development of a brownfield tungsten project, which had been previously mined. The deposit typically contained coarse Wolframite in veins.

Method

  • Coarse gravity separation with jigs.
  • Fine gravity concentration with shaking tables.
  • Magnetic separation on both feed and gravity concentrates.

Results

The ore very amenable to jigging as a preconcentrate separator with >90% recoveries in all size fractions and the fine gravity concentrate produced c. 60% WO3.

Magnetic separation on the tungsten concentrate increased grade to 63% WO3 with an overall recovery c. 70%. Magnetic separation on the feed produced high recoveries and was deemed a suitable primary recovery technique with the concentrate taken for further cleaning.

Outcome

GSL conducted testing for flowsheet development of a brownfield tungsten project and found that the material responded well to gravity and magnetic separation.

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