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fonction of the tailings thickener

Microscale mechanism of tailing thickening in metal mines

2022年6月15日 Water-locking flocs formed by ultrafine tailings particles will damage the thickener underflow concentration in the thickening process during paste preparation. The relationship between the mesostructure and seepage characteristics of tail mortar is

Analysis of thickening performance of unclassified tailings in

Gravity thickening has been widely used in the minerals industry to increase solids concentrations of tailings. The prediction of gravity thickener performance by

CFD simulation of tailings slurry thickening in a gravity thickener

2021年11月1日 In this study, tailings slurry thickening behavior in a lab-scale gravity thickener is numerically modelled by an Euler CFD approach. The feedwell performance

深锥固体通量与絮凝剂单耗和料浆浓度的数学关系 - USTB

2021年1月25日 Abstract: Tailings thickening is an important process of paste filling technology. At present, a deep cone thickener is often used for tailings thickening. The

CFD-PBM modelling of tailings flocculation in a lab-scale gravity thickener

2022年1月1日 The Tailings flocculation process in a thickener was modelled by a coupled CFD-PBM approach. The capability of the proposed model was validated both in liquid

Dynamic modeling and simulation of tailing thickener units

2019年1月15日 Dynamic modeling and simulation of tailing thickener units for the development of control strategies. - ScienceDirect Minerals Engineering Volume 131, 15

Mathematical relationship between the solid flux of deep cone thickener ...

2021年1月25日 Tailings thickening is an important process of paste filling technology. At present, a deep cone thickener is often used for tailings thickening. The sedimentation

Study on the thickening properties of unclassified tailings

A rotor was added to the experimental apparatus,making the apparatus more similar to an in-situ high-capacity thickener.With solid handling capacity per unit area and underflow

Mathematical model and factors of paste thickener rake torque

The paste thickener is a key component that shows high efficiency dewatering, and rake shearing greatly affects tailings dewatering performance; therefore, appropriate rake

CFD simulation of tailings slurry thickening in a gravity thickener

2021年11月1日 In the present study, the thickening process of tailings slurry in a gravity thickener is modelled using Computational Fluid Dynamics (CFD), with a focus on the

Thickeners versus centrifuges – a coal tailings technical

thickener and a 1.117 m diameter solid bowl centrifuge with respect to g square meters is shared. The suitability of the dewatering application is governed by the properties of the resultant solids mixture. Different ash tailings, particularly those containing clay, presented a challenge to both the operations of the thickener and the centrifuge.

Sustainable Management of Thickened Tailings in

2022年8月31日 The “Thickened Tailings Disposal” (TTD) technology produces a high density mine waste that allows for the storage of this material without the need to manage large slurry tailings storage facilities

Tailings technologies - FLSmidth

Filtered tailings technology. Our filtered tailings solution uses high-rate or high-density thickener followed by a variety of filters (resulting in 75 to 90%+ solids) to recover water in tailings prior to disposal. The result is higher water reclamation and lower water costs, a minimised tailings management facility (TMF) with a footprint ...

Theory and Application of Thickener Design - 911

2016年3月4日 desliming options on a tailings thickener underflow density and pumping requirements. G. = VsC I =Vp2 GF]I =Vs2 III L:J x::J iI" III 12 Gu 0 VI ill (1) BHP Central Research Laboratories, Vale St., Shortland, N.S.W. 2287, Australia The second important velocity is the upward velocity of propagation ofeach concentration in the sediment. This ...

Considering hydrocyclone operation for tailings dewatering

2021年11月1日 In this operation, the tailings are initially sent to thickener and then mixed with cement-water mixture prior to its use in the underground mining. Data collection aimed at testing of varied cyclone geometries to define the limits of the laboratory unit. Afterwards, the modelling studies were performed for a given geometry and scaling up was ...

An Alternative Technology to Obtain Dewatered Mine Tailings

2022年10月21日 An alternative process to obtain a high degree of dewatering tailings that produces a high-density product is presented in this article. This technology involves the combination of tailings particle grain size classification by hydrocyclones (HC) and tailings dewatering by horizontal vibratory screens (HVS). It makes it possible to dewater tailings

A Theoretical Model for the Rake Blockage Mitigation in

2018年9月16日 Deep cone thickener (DCT) is key equipment in cemented paste backfill (CPB) technology. However, rake blockage occurs frequently in DCT during the dewatering process of the unclassified tailings being thickened from dilute slurry to thickened tailings or paste. Rake blockage has disastrous effects on the CPB operation. In order to

Research status and prospect of thickening technology for metal tailings

2021年1月11日 Tailings thickening technology is an important part of the green development of mines. This paper presented a summary of the development process of tailings thickening and dewatering technology, dividing the development stage of the thickener into three: (1) ordinary thickener stage, (2) high-efficiency thickener stage, and

(PDF) Dewatering of Copper Flotation Tailings: Effect of Feed

2018年7月19日 Abstract and Figures. Aqueous slurries’ dewatering using gravity-driven thickeners is an essential unit operation in mineral processing. Thickener feed dilution is often used for enhanced ...

Mathematical model and factors of paste thickener rake torque

The paste thickener is a key component that shows high efficiency dewatering, and rake shearing greatly affects tailings dewatering performance; therefore, appropriate rake torque design is crucial for efficient paste thickener operation. ... These tailings are prepared by dewatering, mixed with a proportion of cement or other binder, then ...

Paste and Thickened Tailings Transportation: Design

flow regimes for thickener tailings transport, a significantly lower pumping pressure and less pipe wear due to a moderate transport velocity with minimized eddies make the laminar regime very cost effective (Yánez Tapia, 2018). Figure 2 compares the initial and operating costs of a transport system in the laminar and turbulent regimes.

Dewatering of Copper Flotation Tailings: Effect of Feed

Flotation Tailings: Effect of Feed Dilution on the Thickener Performance, Mineral Processing and Extractive Metallurgy Review, DOI: 10.1080/08827508.2018.1497626 To link to this article: https ...

Oil sands thickened tailings – remedies from an

2019年8月30日 Proceedings Tailings and Mine Waste 2015 Vancouver, BC, October 26 to 28, 2015 Oil sands thickened tailings – remedies from an international ... thickener operator to generate a higher solids content for the underflow, while limiting the yield stress of the slurry (and associated rake torque), to a manageable maximum inside the thickener. ...

Design of a WesTech HiDensity Paste Thickener for

Design of a WesTech HiDensityTM Paste Thickener for Bauxite Tailings J.H. Easton WesTech Engineering, Inc., USA J.S. Slottee PasteThick Associates, USA E.M. de Oliveira WesTech Equipamentos Industriais LTDA, Brazil ABSTRACT A 45 m diameter WesTech HiDensityTM paste thickener was designed and built to produce thickened tailings from

Online rheology monitoring of a thickener underflow

thickener control, pipeline transport, pump operations and tailings deposition (Chryss et al. 2012). The need for this technique has arisen from the greater demands being placed on mineral processing operations (Calvo et al. 2016). The trend towards finer grinds, higher solids concentration and higher clay contents

The effect of residual flocculants in the circulating water on ...

2022年3月30日 To this end, inlet slurry to the tailings thickener of the Gol-e-Gohar iron ore processing plant was sampled for four days. Flocculant type (anionic, cationic, and nonionic polyacrylamide), their dosage (10–90 g/t), pH (1–12.5), solid content (5–23%), and for the first-time residual flocculant dosage in the circulated water were investigated.

Rheology for thickened tailings and paste — history,

process, with the waste stream produced at the bottom of the thickener being a low concentration Newtonian fluid suspension which is pumped in turbulent flow to a disposal area, usually a large dam. Alternatively, Figure 1 illustrates the case where the disposal area is receiving thickened tailings. Once the tailings is

Thickened tailings – a water and energy consumption

Concentrate tailings thickener dry tonnage (maximum) 212.6 t/h Thickener feed solids concentration 11.2%m 3/h 3/h 2.3 Pumping desktop study process conditions This high-level study considered the basic layout shown in Figure 3, pumping thickened tailings 5 km from the process plant to the tailings storage facility.

A Short History of Deep Cone Thickener Development

deep cone thickener that is a third of the diameter. Bagatto (1989) had compared raked thickeners with rakeless ones and had also determined that the underflow could be controlled using the torque signal. In 1973, Robinsky pioneered the use of thickened tailings disposal, which has gained steadily in popularity.

Pore network model of tailings thickener bed and water

Shearing is the basic factor involved in gravity thickening of paste. This work focuses on the influence of pores and throats characteristics on water drainage channel evolution, and determines the proportion of discharged water in tailings thickener bed. Pilot-scale experiment combined with computed tomography (CT) and pore network model (PNM)

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