Fugitive Dust Emissions from a Coal-, Iron Ore- and Hydrated Alumina Stockpile

Topić, Nebojša; Žitnik, M.

doi:10.5772/33741

Cited by 2 publications

(1 citation statement)

References 38 publications

(37 reference statements)

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“…The piles were divided into subareas of constant u s /u r , where u s is wind speed measured 25 cm from the pile surface and u r is wind speed reference measured at the height of 10 m above terrain. Furthermore, the emission factors were calculated according to the EPA method [19] where threshold velocity for coal u t * = 1 m/s [20] was used. EPA defines emission factors as statistical averages of the rate at which a pollutant is released to the atmosphere as a result of some activity, divided by the level of that activity.…”

Section: Resultsmentioning

confidence: 99%

Numerical Modeling of Dust Lifting from a Complex-Geometry Industrial Stockpile

Novak¹,

Bizjan²,

Pražnikar³

et al. 2015

SV-JME

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This paper investigates the dust lifting phenomenon at the coal and iron ore stockpile at the Port of Koper, Slovenia. Dust lifting presents a serious environment and health hazard, thus the main objective of our study was to propose efficient measures for wind erosion reduction. A numerical model of the stockpile was created using the computational fluid dynamics (CFD) software. Wind velocity fields above the piles were calculated for the current stockpile layout and for several modified cases with rearranged piles and added porous barriers. Results from numerical modelling were used in the USEPA model to determine dust emission factors. Comparison of selected cases shows a positive, although limited effect of porous fences and barriers on reduction of local velocities and consequently, dust erosion rate. On the other hand, pile rearrangement has little effect and may not be practical for implementation. Realistic stockpile geometry with adjacent structures has shown to cause wind velocity distributions, which are not consistent with the most studied cases of regular pile shapes and layouts. The angle of incoming wind is a key factor influencing effectiveness of both solid and porous windbarriers. The proposed placement of porous barriers between the piles has shown to be effective in reducing wind exposure and dust emission. To maintain the dust emissions at an acceptably low level, other measures such as spraying with water and crust-forming liquids may still be necessary at higher wind velocities.

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Section: Resultsmentioning

confidence: 99%

Numerical Modeling of Dust Lifting from a Complex-Geometry Industrial Stockpile

Novak¹,

Bizjan²,

Pražnikar³

et al. 2015

SV-JME

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Prevention of the Spread of Dust From Polymetallic Wastes With a Double-Barrier Dust Protection System

Ikramov,

Issayev,

Daribayev

et al. 2024

Inter J Ener Clean Env

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Waste from the metallurgical industry contains many harmful impurities. If improperly handled and stored in open landfills, small particles of this waste can be picked up by the wind, carried over long distances and harm human health and pollute the environment. Lead production waste is especially dangerous. Such objects must be handled well, and various dust protection systems must be used to prevent the spread of dust. It is not a trivial task in the case of large sizes of such objects. The lead waste pile formed by the polymetallic plant near the city of Shymkent, Republic of Kazakhstan, is a huge conical mountain with a base diameter of 240 m and a height of more than a 20-story skyscraper. This pile is not managed at all. The pile produces a large amount of lead waste dust, which is carried by the wind to the city and surrounding areas. A numerical study of the wind flow around a hazardous pile was carried out. The dust generation area for an unprotected pile reaches 6,318.68 m<sup>2</sup>. This dust generation area affects human health and pollutes the environment near the pile. The barrier dust protection system can significantly reduce the power of harmful dust formation. For the first time, analysis and optimization of a dust protection system consisting of two concentric barriers, where heights are significantly less than the height of the object the system handles, was carried out. The results of the research show that installing this fairly simple system around the lead waste pile reduces the formation of air pollutants by 538 times or 99.81% compared to an unprotected object. In addition, the remaining dust particles that can be picked up by the airflow rise to a height of > 140 m above the Earth's surface when using such a protection system and therefore do not affect human health.

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Fugitive Dust Emissions from a Coal-, Iron Ore- and Hydrated Alumina Stockpile

Cited by 2 publications

References 38 publications

Numerical Modeling of Dust Lifting from a Complex-Geometry Industrial Stockpile

Numerical Modeling of Dust Lifting from a Complex-Geometry Industrial Stockpile

Prevention of the Spread of Dust From Polymetallic Wastes With a Double-Barrier Dust Protection System

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