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

Fränkle, Bernd; Morsch, Patrick; Keßler, Christoph; Sok, Thien; Gleiß, Marco; Nirschl, Hermann

doi:10.3390/su14063424

Cited by 6 publications

(7 citation statements)

References 25 publications

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“…The resistance of the felt media is slightly higher and its thickness is about twice that of the cloths. These media were already part of investigations of filter cake adhesion after filtration [17]. Table 2 lists LSM images and data of the tailings' filtration filter media (polypropylene (PP) cloth, nylon cloth and felt media out of PP).…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Table 2. Properties of tailings filtration filter media [17]. The manufacturer's specifications for the filter medium material were verified by wide-angle X-ray scattering (WAXS) measurements (Xeuss 2.0 Q-Xoom, Xenocs SA, Grenoble, France).…”

Section: Lsm Imagementioning

confidence: 99%

“…If a more abrasion-resistant filter media is used and the achievable number of cycles becomes extended, blinding will play a bigger role. The blinding or the chemical cleaning possibility of the filter cloths and also a detailed description of the detachment behavior and the necessary measurements have been discussed in previous publications [16,17].…”

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confidence: 99%

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Tailings Filtration Using Recessed Plate Filter Presses: Improving Filter Media Selection by Replicating the Abrasive Wear of Filter Media Caused by Falling Filter Cake after Cake Detachment

Fränkle

Morsch

Sok³

et al. 2022

Mining

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Currently, the storage of ore processing residues is a major challenge in the mining industry. These tailings are increasingly filtered in advance of disposal using filter presses to make storage safer and to recover water effectively. However, the falling of the detached filter cakes between the individual filtration cycles results in the abrasive wear of the filter cloths at specific points of the chamber geometry and is a main reason for the necessity of a regular replacement. Improved filter media selection through abrasion testing replicating this specific load case increases plant economics by reducing the risk of unplanned downtimes. Therefore, this article explains a test procedure adapted to the direction-specific wear. A brush apparatus is presented, which abrasively loads filter fabrics stretched over an exchangeable edge geometry uniaxially in one direction. The effects of important apparatus setting parameters (sample clamping torque, brush overlap, and brush speed) are shown. Furthermore, the resistances of three different filter media typical for tailings filtration were compared and different edge geometries investigated. Thereby, significant differences were found with regard to filter media type, filter media material, and edge geometry. Depending on the edge geometry used, the polypropylene fabric withstands a load amount by a factor of 3.3 to 8.9 higher than the nonwoven polypropylene, the nylon fabric withstands a load amount by a factor of 3.6 to 5.3 higher than the polypropylene fabric and the nylon cloth withstands a load amount by a factor of 16.1 to 31.8 higher than the nonwoven polypropylene.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Lsm Imagementioning

confidence: 99%

mentioning

confidence: 99%

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