coal stockpile design

Feb 01, 2009· 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 cheaper coals have all assumed greater importance. This report begins by examining why stockpiles are employed.

Registered engineers must design stockpiles. Under the MPRD Regulations, stockpiles had to be designed by a 'competent person'. The Mining Residue Regulations now require that this be done by a civil or mining engineer, registered under the Engineering Profession of South Africa Act 114 of 1990.

The design, fabrication, procurement and construction are done in-house. Fabrication is carried out at three Pentalin Trading workshops' in South Africa and is complimented by the Johdee workshop in Botwana. The Morupule Coal Handling and Preparation Plant has a nameplate capacity of 250 tph. The project will be completed in 2021.

Jul 07, 2007· Inactive Coal Stockpile Design Considerations There seems to be a couple of options including covering the pile with a tarpaulin (plastic covering), spraying on a chemical or compacting it. I have found some research from Spain that would suggest that ash/water slurry could be sprayed on to seal the stockpile.

Factors determining the siting and design of tips and stockpiles. The nature of the quarried material. –unstable materials do not compact to form a stable surface and are more likely to fail or flow– stable materials compact to form a stable surface. – Stable materials can become unstable if one or more of the other factors below are causing an issue.

of a stockpile where the face extends upward at an angle greater than the angle of repose of the coal. 7. Procedure 7.1 Observations—Before sampling a lot of coal using this method, perform a visual inspection for particle distribution and possible particle segregation within the stockpile. Notes

Average throughput and peak capacity, blending/homogenization requirements, environmental restrictions and investment costs are some of the criteria for selection of a stockpile layout. The three...

Coal stockpiles vary in both size and shape. These stockpiles range in size from 30m to 300m. And, from small to large, there are typically four shapes: conical, ring, longitudinal, and free-form. Each type presents unique challenges to covering them.

Coal handling plants mitigate spontaneous combustion in coal stockpiles by stacking in layers, compaction and spraying water. However, spontaneous heating is a …

Where there is a change in the design parameters of the coal stockpile such as stockpile or reclaim capacity, or a change in the way the system is operated, there is a possibility that the change could result in a risk to people, equipment or the environment.A review of the hazards and risk control

"Stockpile" means any accumulation of material formed to create a reserve for loading or other purposes. 4 VAC 25-125-20. General Provisions for Coal Stockpiles and on Stockpiles with Underlying Feeders. A._ Stockpile design and management shall be …

design of storage and machinery used for this purpose. Widely used methods like Windrow, Chevron and Cone Shell type are explained with their main characteristics. The problems faced in coal stacks and factors affecting the spontaneous combustion of coal like coalification degree, petrographic composition, moisture content, mineral

Feb 01, 2009· Management of coal stockpiles, CCC/23. 1 February 2009. Anne Carpenter. 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, acting as a strategic ...

Aug 01, 2009· Abstract. 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.

Sep 14, 2017· Coal stockpiles emit fine particulate pollution in several ways. First, wind blowing over uncovered coal stockpiles results in fugitive coal dust emissions that are a source of PM2.5.

Aug 06, 2020· Hard coal is very susceptible to spontaneous combustion, which is why the height of the stockpile must be in certain cases limited. Circular or longitudinal stockpile? Depending on the customer, stockpile dimensions and design can vary. Two …

In determining coal yard design the receiving capacity and loadout capacity must be taken into account, as well as the stockpile volume where the cost/benefit ratio must be closely studied. Methods of stockpiling are described, including overhead stockpiling conveyor and reclaim tunnel, stacking tube/single discharge, longitudinal pile with ...

Design and Installation . Locate stockpiles away from all drainage system components including storm sewer inlets. Where practical, choose stockpile locations that that will remain undisturbed for the longest period of time as the phases of construction progress. Place sediment control BMPs around the perimeter of the stockpile, such

COAL STOCKPILE MANAGEMENT & SYSTEMS 26 – 27 MARCH 2018, KUALA LUMPUR, MALAYSIA • • About this Training Course Managing your stockpile effectively can be a daunting task when you have to consider all the factors that play a major part in it.

Abstract. Since 1966, TVA's coal inventory surveys have shown unexplained variations from accounting book values. These variations have ranged from about 272 kt (300,000 st) to more than 907 kt (1 million st) for all 12 stockpiles in the TVA system, and are too large to be attributed to normal handling losses.

The capacity of a dry bulk terminal to transload coal or iron ore is determined by many factors, such as the quay length, the yard dimensions, the quay and yard equipment, the stockpile patterns and heights, the storage time distribution of the bulk material, the number of types and/or grades handled, the terminal operating hours (waterside and ...

Download Citation | The Optimal Layout Design for Coal Stockpiles | The various aspects involved in selecting a suitable layout of the stockpile for coal storage and coal terminals are discussed.

Stockpile Calculator. The "Smalis Stockpile Calculator" is simple to use, requires no research on materials and yet, provides the pertinent information regarding all aspects of the stockpile. Simply enter the material to be conveyed and the length of the conveyor that is being considered.

Vibrating Feeder Design for Stockpile and Reclaim. GK Home > Vibrating Feeder Design for Stockpile and Reclaim. ... System designers must apply improved designs for controlling the flow of coal or other bulk materials from storage including full consideration for dust control and pollution. Automated coal handling systems should include ...

with determined coal quality in every stockpile. Coal quality An integrated coal quality management system is in particularly important when power plants are supplied by different minesites with variable coal parameters such as: l Calorific value. l Density. l Ash content. l Moisture content. l Content of sulfur, silicon, aluminum and potassium.

Example - Stockpiled Anthracite Coal. Anthracite coal with density 65 lb/ft 3 is stockpiled in a conical pile with diameter 30 ft and height 8 ft. According the diagram above the volume of the pile is approximately 2000 ft 3. The total mass of the pile can be calculated as. w = (65 lb/ft 3) (2000 ft 3) = 130000 lb. Calculator - Volume of a ...

Keywords: quality control, decision support, mining, stockpile design, intelligent stacking/reclaiming, forecasting, simulation. 1 Introduction Iron ore from inland mines is railed to port, where it is crushed, separated into lump and fines products and stored onto large stockpiles. Ships are loaded for

VEGAPULS 69. The radar sensor detects the height of the coal stockpile and controls the position of the discharge belts. Non-contact, maintenance-free measurement. High measurement certainty despite intense dust and noise generation. Absolute operational reliability in rain and snow.

Increasing 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.

Mar 01, 2008· The key elements of the final design were a longitudinal stockpile and a rail-mounted, bucket-wheel machine (Figure 4) that can stack coal at 1,500 tph and …