Mineral processing simulation models can be classified based on the level that feed stream to the plant and unit models are described. The levels of modelling in this context are: bulk, mineral or ...

Pore-scale fl ow law in water fl ooding process can guide the oil fi eld development plan, to improve the oil recovery e ffi ciency. In this paper, the computational domain is constructed from ...

A pore scale simulation by Sun et al. [28] also focuses on the augmentation of thermal transmission with an upsurge in porosity as well as with an increase in pore-density conditions. The study ...

A promising way to overcome the limitation is a pore-scale simulation (PSS) approach. The PSS method is based on the idea of taking into account the local structure of a three-dimensional porous ...

On the other hand, the computational simulation methods, which are developed for solving a wide range of problems in the field of geosciences in recent years, can be used to realistically describe the physical and chemical processes in the deep Earth, so that the true ore-forming mechanisms, which control the formation of large ore …

Non-pillar sublevel caving is beginning to use large structural parameters in China. Appropriate structural parameters can effectively control the loss and dilution of stope and improve ore drawing efficiency. In this study, taking Chengchao Iron Mine as the engineering background, a theoretical calculation, a numerical simulation, and physical …

ore, and flux particles are charged into the furnace, in most. ... Large-Scale Simulation. Practical BFs can have an inner volume of up to 6000 m. 3, involving in billions of particles ...

Hao and Cheng [27] added a hydrophilic column penetrating the GDL, and pore-scale simulation results found that the columns provide a highway for liquid water while the remaining hydrophobic parts are available for oxygen transport. Such scheme of separating the gas and water transport paths has also been demonstrated in other …

The focus of this work is the simulation and analysis of local turbulent structure at the pore scale for Re d > 2800 in all cases. To examine the accuracy of the flow model and structure model used in this paper, the predicted macro resistance coefficient and the local porosity are compared with experimental data.

Unlike continuum-scale simulations, the surface area in pore-scale modelling is not an input parameter but is a direct output of the simulation. Indeed at the pore-scale, the micro-structure of the porous medium is fully resolved in the computational grid and there is a sharp interface between the fluid and the solid mineral.

The present work deals with the estimation of material and contact parameters of green iron ore pellets for simulation using DEM, followed by simulating a single-deck industrial roller screen operating under different conditions. ... Pressing iron ore concentrate in a pilot-scale HPGR. Part 2: Modeling and simulation. Minerals Engineering ...

Full-scale simulation and validation of bucket filling for a mining rope shovel by using a combined rigid FE-DEM granular material model Open access Published: 30 …

The Discrete Element Method (DEM) is a numerical method that is able to simulate the mechanical behavior of bulk solids flow using spheres or polyhedral elements, offering a powerful tool for equipment design and optimization through modeling and simulation. The present work uses a Particle Replacement Model (PRM) embedded in …

This study presents a modified numerical representation of m-scale fault zones with variable orientations to understand the hydrology of magmatic-hydrothermal ore-forming systems. The vertically extended systems simulation results show that ore deposition can occur along permeable vertical structures where ascending magmatic …

output model of the ore body will be about a 200- file versus a 2.5-Gb file if all the points were to be kept in memory. For such an ore body model, a 32-bit operating system cannot efficiently work at the point-scale simulation but may accommodate simulation at the block-support scale. An alternative simulation method to simulate

(a) General model of the grabbing process (i.e. of iron ore) during unloading bulk carriers, (b) the co-simulation framework of grabs and bulk solid materials based on [8]. Main steps to develop a ...

In this paper, to reveal the flow characteristics of broken mineral-rock of block caving, we present the Attribute Stochastic Medium Theory that combines an attribute block model with stochastic medium theory. An attribute block model was established to fit discrete target regions. A void transfer model and data structure were established based …

Main outcomes of this study have demonstrated that: (1) the proposed FEM-based dual length-scale simulation procedure is suitable and applicable for solving coupled problems involving pore-fluid flow, heat transfer, mass transport and chemical reactions in fluid-saturated porous media; (2) the proposed procedure is predictive because it is ...

PDF | Detailed simulations of industrial‐scale fluidized beds such as the FINEX process are still unfeasible due to the wide range of spatial scales.... | Find, read and cite all the research ...

The uncertainty in 3D targeting by numerical simulation can be constrained by the robust 3D district-scale geological modeling and by the 3D deposit- and ore body …

A coupled multi-scale simulation of over 30 s of process time employing 300.000 inert bed parcels and about 25.000 reacting fuel parcels showed good agreement with experimental data at a feasible ...

With simulated coexistence curves from pore-scale simulation, a modified equation of state is built and applied to model the thermodynamic phase diagram of shale oil. Shifted critical properties and suppressed bubble points are observed when effects of confinement is considered. The compositional simulation shows that both predicted oil …

Thurlby [3], [11], [12] and Young et al. [13] have proposed models devoted to the grate-kiln systems. Thurlby et al. [14] have developed a model for the moving grate iron-ore induration of the pellets. A mathematical model for a pilot scale induration furnace for iron-ore pellets has been presented by Kucukada et al. [15].

A comprehensive study was performed to analyze the unsteady laminar flow characteristics around a porously covered, a fully porous, and a solid squared section cylinder located in the middle of a plane channel. In order to simulate fluid flow inside porous media and porous–fluid interface accurately (minimizing modeling error), the porous …

The solid lines represent the simulation results, and the discrete hollow symbols are the experimental data of Zhang et al. [9]. Note that the discrete solid diamond symbols represent the simulation results in a dual-permeability pore network with experiment-matched porosity and grain size but a smaller domain size.

A fully coupled heat transfer model at pore-scale of volumetric solar receiver is established in this paper. The X-ray computed tomography technique is applied to reconstruct the porous structure.By generating the voxel mesh and coupling with the Monte Carlo Ray Tracing method, the energy source due to the solar radiation could be …

ore blocks, geometallurgical domains or blends pre-pared for the plant feed for different periods from hourly and daily scale to weekly, monthly and annual production (Figure 1). …

The pore-scale numerical simulation of fluid flow and heat transfer processes in the random structures are given. By comparing the simulation results with the corresponding experimental data, the validity of the structure model and the heat transfer model are verified. The macro analysis is given, it is found that the mean porosity, various ...

A promising way to overcome the limitation is a pore-scale simulation (PSS) approach. The PSS method is based on the idea of taking into account the local structure of a three-dimensional .