Elevated coal refuse disposal – Webb belt conveyors keep ahead of production
The Jervis B. Webb Company installed a belt conveyor disposal system for Eastern Associated Coal Corporation's Kopperston plant in West Virginia. The conveyor system replaced an aerial train that was barely keeping pace with the plant's increasing production. The innovations proposed only go to prove that this company is number one in the bulk handling industry.
Refuse travels uphill from the preparation plant on a 30-inch belt conveyor system that is suspended in a 7.5-foot diameter steel tube. It then transfers onto a second belt conveyor system that is suspended in a mine entry tunnel for almost a mile through the mountain and discharges into a 500-ton steel storage bin.
Tunneling through the mountain provides the Kopperston plant with a disposal area that will last for the next 25 years. Low maintenance costs, simplicity of structure and easy cleaning were the main reasons for choosing the tubular structure to enclose the conveyor. Coal handling has certainly become a lot easier since the introduction of the new conveyor system, that is a certain fact.
At the site of the disposal area, a section of the mountainside was cut away to provide a solid base for the 500-ton steel refuge storage bin. An expanded metal walkway extends the full 1100 feet of the tube, which makes inspection of the conveyor easy. Overhead vents circulate air to all sections of the tubing. Since the conveyor is suspended from the tube, there are no structural steel members to accumulate material and promote corrosion. The unbroken flat surface of the tube is easy to paint and maintain. Twist belts are used for the return of both conveyors. Every detail has been given careful consideration to, the chosen systems being perfect for requirements commonly encountered in the bulk handling industry.
The second 30-inch belt conveyor that carries refuse through the mountain to the 500-ton bin is suspended from the roof of the entry. Inspection of this conveyor and the 500-ton bin at the disposal site is simplified by the use of battery-powered personnel carriers that travel on tracks parallel to the belt. To summarize, coal handling benefits from a complete new perspective since the introduction of Webb belt conveyors.
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bulk handling
,coal handling
,webb belt conveyors
,plant
,mountain
,maintenance
,corrosion
,structure
,steel
,mine entry tunnel
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