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A coal preparation plant (CPP) is a facility that washes coal of soil and rock, preparing it for transport to market.


The efficiency of a CPP has a major impact on the profitability of a coal mining operation as the more waste material that can be removed from coal, the greater its market value and the lower its transportation costs. SGS provides a full suite of services to owners and potential buyers of new or existing coal preparation plants.

SGS is a global leader in coal technology. We have the experience and the expertise to help you optimize the efficiency of your CPP and improve your bottom line performance through:

  • Plant design
  • Production evaluation
  • Plant and materials testing
  • Real time analysis of your plant.

Trust our technical, industrial and operational leadership to improve your CPP bottom line through:

Plant Design

Informed plant design decisions made early in the process will ultimately determine the efficiency, operating costs and profitability of your CPP. SGS world class technical experts provide complete circuit design services or independent consulting. We can also accurately measure and certify the performance of your plant.

Pilot Plant Testing

Pilot plant testing by SGS demonstrates and confirms your CPP flowsheet. For new projects, piloting demonstrates operational viability and produces samples of the final expected product. CPP pilot plants generate data that can be used when designing the full-scale plant, thus reducing design and capital risk.

Existing operations can also be simulated at the pilot-scale to evaluate new technology, assess the impact of different coal and ash characteristics, or troubleshoot problems without interrupting production at the main plant.

Plant Evaluations (Plant Audits)

All improvements made to increase the yield from a CPP will result in increased profits. SGS provides complete and reliable coal preparation plant performance evaluations and audits. We have the expertise to design tests, perform in-plant sampling, and conduct the lab analysis required to measure the efficiency of all aspects of your operation.

Sorting and Blending

SGS coal experts identify the lowest-cost solutions for your raw and clean coals by helping you evaluate your various options and designing a system which includes sampling systems and on-line analyzers. This allows you to maximize yield and blend different quality coals to meet client specifications.

Washability Studies

SGS washability testing studies conducted on preparation plant feed samples provide data that is important for preparation plant design and engineering. We conduct accurate and reliable washability studies on a range of densities and coarse to fine coal samples.

Process Simulation

Once the coal’s washability characteristics have been determined, SGS can estimate the yield and quality performance of your preparation plant, based on different process equipment and circuit configurations. This provides important information for the design of new plants and a means of evaluating alternate equipment and flowsheets in existing plants.

SGS has the proven capability to provide independent, unbiased evaluations of coal preparation plants anywhere in the world. Trust the world leader in coal technology for ongoing CPP support or to help you evaluate assets prior to purchasing a coal preparation plant.