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Mapco Coal Company
Lovely, Kentucky
Scope: Engineering, procurement and construction of a
500 TPH plant addition
This project required a major scheduling and coordinating effort.
The addition was designed to increase existing plant capacity,
while keeping the facility operable during the erection and installation
of the additional equipment.
Roberts & Schaefer Company elected to add a heavy medium
cyclone circuit in a size fraction, which maintained the feed
rate to the existing vessel circuit, and simultaneously reduced
the feed to the existing heavy medium circuit. This was effected
by selective screening raw coal ahead of the existing circuit.
Additional rework was required on existing equipment such as replacement
of the existing heavy medium vessel, and modifications to the
existing screening facilities. Also included was a complete control
system incorporating both the existing and new facilities.
The existing water clarification circuit and static thickener
were refurbished so they would be adequate for the increased capacity.
The changes were made by the use of magnetic separation tailings
as rinse water for the heavy medium rinse screens.
Existing material handling facilities for raw coal and clean
coal were upgraded to accommodate the additional capacity.
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