Iron Ore Tailings Dewatering: Measurement of Adhesion and Cohesion for Filter Press Operation

Bernd Fränkle, Patrick Morsch, Christoph Kessler, Thien Sok, Marco Gleiß and Hermann Nirschl
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Bernd Fränkle: Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Patrick Morsch: Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Christoph Kessler: Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Thien Sok: FLSmidth Inc., Salt Lake City Operations, Midvale, UT 84047, USA
Marco Gleiß: Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Hermann Nirschl: Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany

Sustainability, 2022, vol. 14, issue 6, 1-15

Abstract: Globally, mining operators focus increasingly on tailings filtration to recover process water and store tailings more safely. Generally, required water contents below 20-w% are reached by using filter presses. To maintain high efficiency, complete cake detachment is needed because incomplete discharge reduces plant performance. However, filter cake discharge can occur in different ways, mainly influenced by adhesion of the filter cake to the filter cloth as well as by cohesion of the cake. Therefore, this study points out different major detachment behaviors and a theoretical approach to describe them. Furthermore, investigations on iron ore tailings filtrations were carried out to show the influences of different filter media, different filtration pressure and cake post-treatment on adhesion and cohesion.

Keywords: tailings filtration; mineral processing; filter press; cake detachment; adhesion; cohesion; regeneration (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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