Experimental determination of the energy optimum for the transport of floating particles in pipes

Edelin, Denis; Czujko, Pierre-Clément; Castelain, Cathy; Josset, Christophe; Fayolle, Francine

doi:10.1016/j.expthermflusci.2015.06.018

Cited by 17 publications

(8 citation statements)

References 41 publications

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“…According to this criterion, when water is considered in the costs of a transportation system, the optimal concentration of the solids to be transported is an increasing function of the throughput. This result improves early findings, in which the weight of transported material relative to the use of water was not correctly defined [10,11].…”

Section: Introductionsupporting

confidence: 78%

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Analysis of Energy Sustainability in Ore Slurry Pumping Transport Systems

et al. 2019

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The mining industry is characterized by a high consumption of energy due to the wide diversity of processes involved, specifically the transportation of ore slurry via pipeline systems. This study investigates the relationship among the variables that define the slurry transportation system to minimize the power requirements and increase energy sustainability. The energy indicator (I), the criterion used for the energy assessment of three different pumping system layouts, was computed via numerical simulation. Optimization of response I was carried out through a statistical technique in the design of the experiment. In the study, four variables were defined to describe the slurry transportation systems, two of which are associated with the piping system (length L and diameter D); the other two are related to the slurry pattern (the volumetric concentration Cv and granulometry D50). The results show that all variables are statistically significant relative to the indicator I, with L having the greatest amplitude of variation in the response, increasing the energy indicator by approximately 60%. Likewise, the decrease of the D50 from 300 µm to 100 µm produces an average decrease of I of 24%. Moreover, the interaction among the factors indicates that two pairs of factors are correlated, namely D50 with L and D with L. Finally, a predictive model obtained a fit that satisfactorily relates with the numerical data, allowing, in a preliminary way, to identify the minimum power requirement in iron ore slurry pipeline systems.

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Section: Introductionsupporting

confidence: 78%

“…The predicting models are expressed by Equations (9)- (11), for the 1P, PS, and UD cases, respectively:…”

Section: Resultsmentioning

confidence: 99%

Analysis of Energy Sustainability in Ore Slurry Pumping Transport Systems

et al. 2019

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“…The rules that were obtained by the experiments were often limited and needed to be modified. The particle moving velocity, distribution state, pressure scatter, flow rate, and other information in the pipeline system have been determined while using high-speed cameras, flow meters, pressure gauges, and other methods [8][9][10]. During the experimental process, purchasing the monitoring equipment is often necessary for obtaining particle movement information.…”

Section: Introductionmentioning

confidence: 99%

Ballast Flow Characteristics of Discharging Pipeline in Shield Slurry System

et al. 2019

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We adopted two-way coupling of discrete and finite elements to examine the non-spherical ballast flow characteristics in a slurry pipe system during a shield project. In the study, we considered the slurry rheological property and the flake shape of the ballast. A ballast size between 17 and 32 mm under different slurry flow rates and ballast volumetric concentration conditions was investigated for determining the law through which the mass flow rate, detained mass percentage, and ballast distribution state are influenced. The results indicate that increasing slurry flow rate and the ballast volumetric concentration increase the mass flow rate; the influence of the latter is stronger. Increases in both in the slurry flow rate and the ballast volumetric concentration can reduce the detained mass percentage in the slurry discharging pipeline, whereas increasing the ballast size has the opposite effect. The increase in both the slurry flow rate and the ballast size changes the ballast motion state. Experiments verified the numerical lifting model of the ballast in the vertical pipeline. The measurements of the actual pipeline wall thickness verified that the simulation results regarding the ballast distribution were accurate.

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“…Such behavior is less harmful for living beings. However the standard limit of FP is 17 g/m 2 /month [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Airborne particles pollution in Dej city

Cherecheş¹,

Petean²,

PALTINEAN³

et al. 2018

Studia UBB Chemia

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Environmental data achieved with the Air Quality Monitoring Station in Dej city, Romania, reveal a normal state of particulate matter (PM) emissions below the standard limit in April and May 2017. These airborne particles contain a large amount of mineral fractions such as: quartz, calcite, clays (e.g., kaolinite and muscovite), and lepidocrocite. Their size varies in a wide range: from 1 to 200 μm for floating particles (FP) and from 1 to 10 μm for PM10 observed by optical microscopy and SEM. The in vivo testing shows the ability of PM10 to penetrate into the upper respiratory tract. Mineral fractions were found in nasal exudates. At a shorter exposure time (e.g., 1 minute), only PM10 particles were observed. Particles larger than PM10 were found in nasal exudates at prolonged exposure for up to 3 minutes.

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Experimental determination of the energy optimum for the transport of floating particles in pipes

Cited by 17 publications

References 41 publications

Analysis of Energy Sustainability in Ore Slurry Pumping Transport Systems

Analysis of Energy Sustainability in Ore Slurry Pumping Transport Systems

Ballast Flow Characteristics of Discharging Pipeline in Shield Slurry System

Airborne particles pollution in Dej city

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