Production of talc concentrate from talc/carbonate crude ore by utilization of STET belt separator

Christoph Luckeneder, Sabrina Gehringer, Helmut Flachberger, Monika Joanna Mirkowska

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A talc/carbonate crude ore was crushed and milled. A product 100 % smaller than 315 µm was obtained for separation tests. The separation tests were conducted on an electrostatic belt separator. The target of the separation tests was a talc concentrate with a mass recovery as high as possible and a loss on ignition as low as possible.
The influence of belt speed, applied voltage and polarity of the top electrode were tested. A combination of a high belt speed, a high applied voltage and a positive top electrode resulted in a mass recovery of 47.2 % and a loss on ignition of 9.2 %.
During the test a comminution effect shifted the particle size distribution significantly. The fraction 315 / 250 µm represented 17.2 % of the sample mass. The separation test reduced this fraction to 2.2 %.
The separation of a talc/carbonate crude ores with an electrostatic belt separator was successful. The comminution effect has to be taken into account.
Original languageEnglish
Title of host publication15th Minisymposium Verfahrenstechnik and 6th Partikelforum, Leoben, April 29th – 30th, 2019, Conference Proceedings
PublisherMontanuniversitaet Leoben, Lehrstuhl für Verfahrenstechnik des industriellen Umweltschutzes
Pages25 - 28
Number of pages4
ISBN (Print)978-3-200-06348-8
Publication statusPublished - 29 Apr 2019

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