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tailings slurry separation at iana

Effect of feed solid concentration on tailings slurry flocculation in a

Thickeners have been widely applied in the solid-liquid separation process, such as wastewater treatment and tailings slurry thickening process [1], [2], [3]. The principle of a thickener is simple: a feedwell generally receives the tangential feed Flocculants play an important role in the solid-liquid separation of tailings slurry, and its dosage directly impacts on the dewatering efficiency of tailings. Herein, Efficient dewatering of unclassified tailings with flocculant: role of

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Practical tailings slurry dewatering and tailings management

equipment, describes tailings placement and storage methods associated with varying degrees of dewatering, and discusses the related benefits in terms of robustness of Controlling the rheology of iron ore slurries and tailings with surface chemistry for enhanced beneficiation performance and output, reduced pumping cost Controlling the rheology of iron ore slurries and tailings with

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Study on the Relation between Tailing Particle Size and Tailing

Nonlinear relation between particle size of tailings and underflow concentration. (a) Median particle size of tailings. (b) Control particle size of tailings. The tailings solids of Slurry 1 settled more than that of Slurry 2, as the percentage of illite–smectite was higher in Slurry 2. For Slurry 1, the settling rate Settling, consolidation and shear strength behaviour of

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An analytical solution to estimate the settlement of

Fig. 2 shows sedimentation and self-weight consolidation (Fig. 2 a) and a typical compression curve e-σ' (Fig. 2 b) of the tailings or backfill slurry. At the initial Mineral tailings are heterogeneous mixtures of different solids suspended in process-contaminated water that often contains multiple soluble species. By Improved water recovery: A review of clay-rich tailings

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Efficient dewatering of unclassified tailings with flocculant

37022544 DOI: 10.1007/s11356-023-26676-0 Abstract Flocculants play an important role in the solid-liquid separation of tailings slurry, and its dosage directly impacts on the Keywords: tailings dewatering, solid–liquid separation, high-density slurry 1 Introduction In hydrometallurgical extraction processes, by definition, the medium for extraction is water mixed with reagents, and the residues from these processes (tailings) are usually in slurry form. In addition to providingPractical tailings slurry dewatering and tailings management

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Tailings

In mining, tailings or tails are the materials left over after the process of separating the valuable fraction from the uneconomic fraction ( gangue) of an ore. Tailings are different from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.Sorting of tail ing by sha ker: 50 0 ml 20 wt% tailings slurry was put into a shaker (6-S, China). The separation condition kept that: the stroke is 10 m m; the frequency is 2 20/mi n.Separation of Kaolinite from Ion-Adsorption Rare Earth Tailings

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(PDF) Experimental Study on Recovery of Cyanide Tailings Slurry

Experimental Study on Recovery of Cyanide Tailings Slurry by Membrane Separation in a Gold Mine November 2019 IOP Conference Series Earth and Environmental Science 384(1):012022Diantao, G., Zhaotai, W., Chong, Y. Application of concentrated sulfuric acid assisted cyanide removal process in sodium pyrosulfite tailings slurry. World Nonferrous Metals [10](01), 124–125Experimental analysis on cyanide removal of gold tailings Nature

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Effect of interparticle interactions on the yield stress of thickened

The zeta potential characterizes the surface property of the copper tailings particles in the slurry. Fig. 3 shows the zeta potential–pH behavior of unflocculated copper tailings slurry in the presence of Ca(II) ions. According to the zeta potential test, the zeta potential is strongly negative, ranging from −59.56 to −21.01 mV, over theThe slurry concentration of the unclassified tailings in the experiments was 6.0%. Firstly, tailings and water were added to 1000 ml measuring cylinder and mixed for 1 min to obtain the slurry with a concentration of 6.0 vol.%. Then, the flocculant solution was added with a pipette and stirred for 20 seconds.An experimental study on the flocculating settling of unclassified tailings

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Management of wastes from uranium mines and mills

process are mostly reused. Water slurry is used to trans-port the leached washed tailings which will contain chemicals such as carbonates, sulphates, and nitrates. The barren solution from acid-leach process is used for transport of tailings and contains greater concentrations of contaminants including sulphuric acid, heavy metals,Rapid flocculation and settlement (FS) of mine tailings is significant for the improvement and development of the filling process, whereas the settlement velocity (SV) of tailings in FS has been recognized as a key parameter to evaluate the settlement effect. However, the influence of temperature on the SV and its mechanism have not been Temperature variation characteristics in flocculation settlement

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Rheological Properties of Ultra-Fine Tailings Cemented Paste Backfill

Ultra-fine tailings cemented paste backfill (UCPB) exhibits special rheological characteristics with the effect of an ultrasonic sound field. In this study, in order to explore the thickening effect of slurry under ultrasonic wave action, we examined the rheological properties with ultrasonic wave tests of UCPB and the rheological properties Section snippets Literature review method. The literature review started with searching peer-reviewed relevant research articles from 1990 to 2020 using keywords such as “paste backfill mining”, “mine paste backfill”, “tailings in paste backfill”, “alternative binders in paste backfill”, “cemented paste backfill”, “fly ash use in paste backfill”, Utilization of mill tailings, fly ash and slag as mine paste backfill

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1,*,Zheng Zhang 1 2,3 1 MDPI

Keywords: life cycle assessment; tailings disposal; conventional slurry disposal; dry stack tailings disposal; open pit mine 1. Introduction Mine waste tailings are the unwanted and currently uneconomical materials left after mineral processing involving the separation of valuable elements from ores [1]. Globally,Experiments were carried out in three campaigns: nonsegregation flocculation of tailings slurry to reduce fine content in supernatant (low turbidity); water drainage evaluation via filtration tests, plus the measurement of capillary suction time; and the study of geotechnical properties, including hydraulic conductivity and yield strength.Experiments for Enhancing Tailings Slurry Drainage and

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Improved water recovery: A review of clay-rich tailings and saline

1. Introduction. The tailings generated from mineral processing can represent >95% of the total ore [1].As ore grades decline, higher tonnages are processed, making tailings management more difficult [2].This is reflected in higher costs, increased difficulties in returning water for further processing, and challenges in mine closure and Tailings sand is the dam-building material of the tailings dam accumulation sub-dam, and its mechanical properties directly affect the safety and stability of the whole tailings dam. With the improvement of mineral sorting technology, the content of fine and ultrafine particles in the tailings gradually increases, which will affect the mechanical Study on the Effect of Flocculation and Sedimentation on the

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How to dewater tailings slurries with slimes and ultra-fines

From these conversations, my understanding is that a slurry with a d 50 of <10µm micron, and with a P 80 of 45µm, would be considered a slimes stream. It often contains ultra-fine particles of the parent rock (e.g. quartz) and silts. It is also frequently associated with clays (aluminosilicates) such as kaolinite, smectite and illite.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 effects of particle size and feed velocity. A Two-Fluid Model (TFM) is employed to describe the particle-fluid and particle-particle interactions while turbulence is described by the ω CFD simulation of tailings slurry thickening in a gravity thickener

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Process water conditioning to improve slurry dewatering

2. Conditioned slurry made up in ClariVie44® conditioned process water (dosed at 1.5 kg/m3). Both slurry types were then dewatered via two dewatering technologies in sequence at the laboratory scale, i.e. paste thickening of the -300 µm feed slurry, followed by pressure filtration of the thickened underflowAbstract. The engineering properties of tailings are important for the safety evaluation and engineering design of tailing dams. In the present study, laboratory experiments were performed to investigate the geotechnical properties of four different tailings, including two iron tailings (coarse and fine) and two copper tailings (coarse and fine).Geotechnical Properties of Mine Tailings Journal of Materials

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Comparative experimental study on the harmless treatment of

Section snippets Materials. Cyanide tailings were obtained from the gold concentrate of Taibai gold ore in Shaanxi Province. Analysis showed that the contents of the total cyanide (CN T) in tailings and free cyanide (CN −) were 1574.21 and 275.82 mg/L, respectively.The results of the chemical composition analysis and mineral composition

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