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O_Blend Coal

Check out the benefits of O_Blend Coal

Helps deliver a desired power output and decrease CO2, SO2, and CaO outputs.

Increases mine lifetime and decreases fuel-mix costs by increased/decreased use of low-grade/high-grade fuel sources output.

Works as an Autopilot to guarantee fuel-mix quality despite strongly varying fuel-source qualities.

Assists the operators or automates sorting and fuel-mix blending.

Creates and uses spatial yard maps for sorting and blending.

What is it all about?

Based on on-line/at-line analyzers (e.g. PGNAA, at-line XRF, PFTNA, LIBS), process measurement devices (e.g. scales, GPS), and off-line analyzers (e.g. lab XRF, calorimeter),
O_Blend Coal helps

  • visualize the tonnage and quality of subpiles,
  • sort incoming material feeds onto subpiles,
  • optimize the quality of the fuel mix (blendpile, train, ship, bunker) or a blend tonnage window
    by adjusting the proportions of the material feeders or reclaimers
  • automate stackers and reclaimers for fully-automatic sorting and blending

in coal-fired power stations, coal mines, terminals and ports, where the quality can be a vector of fuel concentrations, moisture, CV, ash content, etc.

O_Blend Coal Features


    • Visualize tonnage and quality maps of stacked (sub)piles
    • Assist in selecting the sources of the incoming material feeds
    • Assist in optimizing the subpile cuts to reclaim by predicting the quality of the reclaimed materials


    • Automatically sort or assist in sorting an incoming feed from a truck, train, ship, quarry or mine onto subpiles with distinct grades


    • To reduce the variability of blend quality, automatically blend or assist in blending several material feeders or reclaimers
    • Handle large unknown variations of the material qualities with no need to update the qualities by the user
    • Optimize the blend mix flowrate within min/max limits
    • Handle large unknown variations of the manually added materials such as direct feeds
    • No need for maintenance contract or on-site expert as O_Blend Coal is based on novel measurement-based optimization (MBO) technology
    • Compensate for large time delays (40 min and more) between feeder/reclaimer actions and off-line analysis in the absence of an on-line/at-line analyzer
    • Apply customized strategies to reduce the effects of silo or pile changes and large perturbations in the feeds
    • Use alternative feeds when a feeder/reclaimer reaches a limit
    • Apply customized strategies e.g. to handle feeders/reclaimers with a nonzero minimum flowrate or when a feeder/reclaimer deviates from its setpoint
    • Compute an optimal raw material or subpile for each feeder/reclaimer
    • Use transparent feeder/reclaimer actions

And more:

  • Reduce the need for recalibrating on-line/at-line analyzers
  • Fast commissioning thanks to a dynamic simulator
  • Maximize the throughput of mills
  • Connect easily to a customer PLC (ABB, Rockwell, Schneider-Electric, Siemens, Yokogawa, etc.)
  • Plant automation and SCADA available such as server/client set-ups with operator panels and manager PCs for reporting.

Please contact us for more detailed information.

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