Regeneration assessments of filter fabrics of filter presses in the mining sector

Fränkle, Bernd; Morsch, Patrick; Nirschl, Hermann

doi:10.1016/j.mineng.2021.106922

Cited by 8 publications

(5 citation statements)

References 35 publications

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“…However, it is obvious that trouble-free operation is necessary in order not to represent the bottleneck of the entire process chain. Common problems concerning filter presses are the correct selection of the filter media, mechanical wear or blinding of the filter cloth [11] and detachment problems of the cakes. In the latter case, completely adherent cakes or partial drop-off can occur due to partial reaching of the yield limit and breaking, respectively.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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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.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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“…Iron ore tailings were investigated, which were already part of investigation of filter media regeneration (Fränkle et al 2021). These show a particle size distribution and mass concentration typical for tailings, which is listed in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…Due to the large amount of tailings to be processed, correspondingly large presses are necessary, of which, moreover, several are operated in parallel arrangement (Wisdom et al 2020). In addition to fabric blinding (Fränkle et al 2021) and mechanical wear, cake sticking after filtration is a major problem that can occur during operation.…”

Section: Introductionmentioning

confidence: 99%

Towards prediction of cake detachment in tailings filtration

Fränkle¹,

Morsch²,

Nirschl³

2021

Proceedings of the International Seminar on Paste and Thickened Tailings

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By offering an opportunity to fulfil environmental and process water recovery specifications, filtration of tailings has received increasing attention. In the process, complete cake detachment is required to maintain high throughputs. Incomplete discharge represents a bottleneck in the process. Therefore, a deeper understanding of cake detachment behaviour is a key to success. Experimental studies on adhesion forces between filter cake and cloth are a first step towards detachment prediction. Filtrations using an FLSmidth lab filter press and subsequent adhesion measurements with iron ore tailings and two different filter media show the influence of filtration pressure on adhesion.

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“…Notably, a majority of filter materials are non-degradable, and the waste filters become a new environmental issue. Natural or endurable materials are increasingly popular filter materials, encouraging reuse and durability for sustainable development with the least harm to both people and nature [18][19][20][21][22][23][24]. However, industrial development has caused pollutions that jeopardize the environment and human health constantly, especially particulate pollutants that have become a global crisis.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Needleless Electrospinning Polyvinyl Alcohol/Water-Soluble Chitosan Nanofibrous Membranes: Antibacterial Property and Filter Efficiency

et al. 2022

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Electrospinning is an efficient method of producing nanofibers out of polymers that shows a great potential for the filtration territory. Featuring water-soluble chitosan (WS-CS), a low-pollution process and a self-made needleless machine, PVA/WS-CS nanofibrous membranes were prepared and evaluated for nanofiber diameter, bacteriostatic property, filtration efficiency, pressure drop, and quality factor. Test results indicate that the minimal fiber diameter was 216.58 ± 58.15 nm. Regardless of the WS-CS concentration, all of the PVA/WS-CS nanofibrous membranes attained a high porosity and a high water vapor transmission rate (WVTR), with a pore size of 12.06–22.48 nm. Moreover, the membranes also exhibit bacteriostatic efficacy against Staphylococcus aureus, an optimal quality factor of 0.0825 Pa−1, and a filtration efficiency as high as 97.0%, that is 72.5% higher than that of common masks.

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Regeneration assessments of filter fabrics of filter presses in the mining sector

Cited by 8 publications

References 35 publications

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

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

Towards prediction of cake detachment in tailings filtration

Preparation of Needleless Electrospinning Polyvinyl Alcohol/Water-Soluble Chitosan Nanofibrous Membranes: Antibacterial Property and Filter Efficiency

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