Tortuosity prediction and investigation of fluid flow behavior using pore flow approach in heap leaching

Maghsoudy, Sina; Bakhtiari, Omid; Maghsoudy, Soroush

doi:10.1016/j.hydromet.2022.105868

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…To quantitively describe the dynamic liquid retention and solute transports in agglomerated heaps, a novel real-time, in-situ liquid retention characterizing system (RILRCS) is well developed (Figure 1). Taking the functionality as evaluation factors, the structure of RILRCS is divided into (Figure 1a): liquid irrigating (9,10,11,13,14,15,16,17,18), tension measuring (5,6), data visualizing (8), and supporting (1, 2, 3, 4, 7, 12) systems.…”

Section: Real-time In-situ Liquid Retention Characterizing System (Ri...mentioning

confidence: 99%

“…Specifically, the solute transport areas in the unsaturated heaps are closely related to mobile liquid (mainly shown as preferential flow), while the solute transport efficiency is closely related to immobile liquid (mainly shown as stagnant flow). The existing research shows that there are two key star-like inter-particle pores and intra-particle pores in the ore heap, and solute transport widely exists in the inter-particle pores with solution as the key medium [11,12]. These solute/mass (including solute oxygen, metallic ions, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Hydrodynamic Hysteresis and Solute Transport in Agglomerated Heaps under Irrigation, Stacking, and Bioleaching Controlling

et al. 2022

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Hydrodynamic hysteresis exists widely in agglomerated heaps with well-developed intra-pores, and it directly affects solute transports and bioleaching reaction. In this paper, the dynamic liquid retention behavior under different heap porosity and irrigation condition is quantified via a novel real-time, in-situ liquid retention characterizing system (RILRCS), and the potential effects of initial liquid retention on solute transport and leaching reaction are carefully discussed. The results show that the immobile liquid is dominant in agglomerated heaps. The ratio of immobile and mobile liquid (η) dynamically changes due to mineral dissolution and new flow path appearances. The η normally increases and mobile liquid occupies a higher proportion due to acidic leaching reactions, especially at a smaller Rg (10.32 mm) and a larger u (0.10 mm/s). The dynamic liquid retention is more sensitive to the diameter of packed feeds (Rg) and superficial flow rate (u) instead of leaching reactions. This might be because the damage of leaching reaction on minerals pores/voids is limited and cannot extensively change the potential pore channels or fluid flow paths. Based on pulse tracing and conductivity tests, we reveal that the solute resides longer under a slower u and smaller packed Rg condition, which corresponds well with desirable copper leaching efficiency. Specifically, the liquid hysteresis behavior is more obvious at a lower u (0.01 mm/s) and smaller Rg (10.32 mm). This paper gives a good reference to ascertain the liquid retention and hydrodynamic hysteresis and promote mineral leaching performance.

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Section: Real-time In-situ Liquid Retention Characterizing System (Ri...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Hysteresis and Solute Transport in Agglomerated Heaps under Irrigation, Stacking, and Bioleaching Controlling

et al. 2022

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A design kinetic and hydrodynamic study of a coupled dual fluidized bed MTO reactor-regenerator system

Maghsoudy,

Mansouri Borujeni,

Nouri

et al. 2024

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Three-dimensional characterisation of pore networks and fluid flow in segregated heaps in the presence of crushed ore and agglomerates

et al. 2023

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Tortuosity prediction and investigation of fluid flow behavior using pore flow approach in heap leaching

Cited by 5 publications

References 37 publications

Hydrodynamic Hysteresis and Solute Transport in Agglomerated Heaps under Irrigation, Stacking, and Bioleaching Controlling

Hydrodynamic Hysteresis and Solute Transport in Agglomerated Heaps under Irrigation, Stacking, and Bioleaching Controlling

A design kinetic and hydrodynamic study of a coupled dual fluidized bed MTO reactor-regenerator system

Three-dimensional characterisation of pore networks and fluid flow in segregated heaps in the presence of crushed ore and agglomerates

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