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coal stockpile design

A new criterion to design reactive coal stockpiles

Thus, this work proposes a design criterion for such reactive coal stockpiles by considering different wind speed, porosity, and permeability of a triangular coal This paper proposes a new criterion to design the self-heating coal stockpiles. The generated heat can be removed if air is blown to the self-heating A new criterion to design reactive coal stockpiles

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Effects of wind barrier design and closed coal storage on

The distance between a wind barrier and a stockpile is selected as a design factor in the stockpile with both a single and a dual barriers and air blowing from the 1 Introduction A dynamic simulation was conducted for the life of mine (LOM) extension project of Coal Mine A. Coal Mine A is situated in the north-eastern part Dynamic simulation of an opencast coal mine: a case study

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(PDF) Coal handling quality from pits to stockpiles to market

Monitoring of coal quality from the pit to the stockpile is done by taking representative samples from drilling, mining, and stockpile activities. Then the samples Abstract Excessive coal moisture leads to a lower heating value and power plant efficiency, and increased transportation costs. Therefore, coal stockpile management and moisture control are Minerals Free Full-Text Coal Moisture Variations

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Effect of weathering and stockpile design on physicochemical properties

Coal samples from the stockpile were collected at 30 days interval (from June 2016 to May 2017) for analysis of various chemical properties: proximate analysis, This paper presents the results of calculations from a two-dimensional unsteady state model of a coal pile that self-heats. The influence of pile height, slope Self-ignition characteristics of coal stockpiles: theoretical

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Management of coal stockpiles, CCC/23 ICSC

With mounting pressure to minimise the capital tied up in stockpiles, there is a need to optimise coal inventories. Factors such as stockpile size, turnover period, timely stock management, and the ability to take advantage of stockpile side angle, as depicted in Figure 5 shows that this intersection (optimum) point moves down. toward the abscissa. This, in turn, decreases the maximum temperature of coal stockpile(PDF) Side angle optimisation of coal stockpiles ResearchGate

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Coal Pile: Storage & Blending of Raw Materials Beumer

The shape of the stockpile depends on the space available and the volume of the material to be stored. A rotary spreader is used to fill the stockpile, and material is taken from the pile using a scraper chain with buckets. Based on the specific task (buffering, collecting and distributing, blending/homogenising) and the resulting incoming the design and optimization of coal fire fighting engineering with HP application in the future. Nomenclature A Pre-factor [s–1] b n Fin height [m] heat dissipation inside the coal stockpile and keep the tempera-ture inside the coal pile below 333 K. In the above studies, the HPs played a role in cooling, but the angles of the HPs wereNumerical evaluation of inclined heat pipes on

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Management of coal stockpiles (Journal Article) ETDEWEB

@misc{etde_20123136, title = {Management of coal stockpiles} author = {Carpenter, A M} abstractNote = {Good stockpile management is an important part of the coal supply chain from mine to consumer. Main factors that need consideration are outlined (from a report by IEA Coal Research, CCC/23). These include control of coal blend This paper employs a stochastic and dynamic intermediate storage model to estimate the optimal stockpile levels at both a mine and port for a coal supply chain. The optimisation model demonstrates(PDF) Optimising Coal Stockpiles in a Supply Chain Using

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Mine stockpile design to minimise environmental impact

useful insight for comparing available stockpile policies. A simulation model has been constructed to aid the mine planner choose between alternative stockpile policies. The model has been constructed using VBA in Excel, to provide ease of use and portability. Keywords: quality control, decision support, mining, stockpile design, intelligentOperational flow chart of a coal blending management system (Lyu and others, 1991) Zhong and others (2013) are preparing a 'coal selection-blend and generation cost prediction system' based on(PDF) Blending of coals to meet power station requirements

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风障联合压实防治煤堆自燃技术工艺参数优化-《中国安全生产

In case of single compaction of coal stockpile, there exists the minimum inappropriate wind velocity, which decreases with the increase of porosity. In case of independent wind barrier for coal stockpile with 6 m height, only when the height of wind barrier is 12 m and the distance from coal stock pile to wind barrier is 25 m, the The difference in ash content in pits and stockpiles is 1.5%, the difference in total sulfur content in pits and stockpiles is 0.7%. Coal quality test layer 1 from pit and stockpiles layer 1. Coal(PDF) Coal handling quality from pits to stockpiles to market

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Full article: Methodology for a dump design optimization in large-scale

Therefore, new methods for dump design optimization are of the highest priority in mine planning management. This paper presents a methodology to model and optimize the design of a mine dump by minimizing the total haulage costs. The proposed methodology consists of: (1) formulation of a dump model; (2) solves by using linear programming andAbstract. This paper proposes a new criterion to design the self-heating coal stockpiles. The generated heat can be removed if air is blown to the self-heating stockpile. At the same time, introducing more air to the system boosts the aforementioned chemical reactions. Hence, there is a tradeoff between the two opposing effects.A new criterion to design reactive coal stockpiles

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(PDF) Characteristic of Coal Stockpile in Lowland

Coal stockpile where the study was conducted, Stockpile system is using chevron type because: contour shape, types of tools used, ease of handling, and to avoid self heating.@article{osti_6283714, title = {How to design and improve stacking and reclaiming systems}, author = {Baer, R E}, abstractNote = {Factors to be considered in the design of a stacking/reclaiming facility are discussed. In determining coal yard design the receiving capacity and loadout capacity must be taken into account, as well as the stockpile How to design and improve stacking and reclaiming systems

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Management of coal stockpiles (Technical Report)

Stockpile management is an important part of the coal handling process from mine to customer. Virtually all coal producers and consumers make use of stockpiles at their facilities, either to serve as a buffer between material delivery and processing or to enable coal blending to meet quality requirements. This report begins by examining whyWind field of the coal stockpile test field. Prior to conducting the suppression efficiency test of fugitive dust emitted from a simulated coal stockpile in the test field, we initially adjusted the blowing wind speeds driven by the IFU to 3 and 10 m/s, respectively, and then measured the wind field over the entire coal stockpile test field.Exploratory investigation on the suppression efficiency of

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(PDF) Prevention of spontaneous combustion in coal stockpiles

The spontaneous ignition of coal stockpiles is a serious economic and safety problem. This paper deals with oxidation and spontaneous combustion of coal piles laid in coal storage yard and theIncreasing coal stockpile side angle reduces coal stockpile optimum point. Forty-five degrees can be considered as the best point, taking into account all important parameters, including safe design area of a coal stockpile, required storing area for coal and also site activities. REFERENCES Alazmi, B and Vafai, K, 2000.Side angle optimisation of coal stockpiles Academia.edu

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Buoyancy Effects on Cooling a Heat Generating Porous

236 A. Ejlali, K. Hooman H Dimensionless heat-function k Thermal conductivity (W/mK) kp Permeability of the coal stockpile (m2) l Length of the computational domain (m) Pe Péclet number, ρfCpU0D/k Pr Prandtl number, μCp/k Q Volumetric heat generation rate (W/m3) Re Reynolds number, ρfU0D/μ Ri Modiﬁed Richardson number, The conventional Arrhenius equation that estimates the heat generation of coal in numerical simulation has been widely applied. However, the aging effect markedly influences the exothermic behavior of coal at low temperature and cannot be achieved using the conventional Arrhenius equation. In this paper, an improved wire-mesh basket test Application of aging effect model in numerical simulation for

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A review on numerical solutions to self-heating of coal stockpile

Section snippets Mechanistic understanding of the hazard. Analogous to many other biological and chemical porous reactors, a coal stockpile is essentially a coal mass consisting of heterogeneous distribution of porous coal particles and gaseous species like oxygen, water vapour, and gaseous product liberated by oxidation reaction

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