In 1999 MMD delivered and installed a 625 series sizer to a lignite operation in the Czech Republic. Now, more than ten years later, the same operation has increased their production targets and turned to MMD again to meet these new demands with a new 625 series sizer.

The old and new machine sit side by side and are fed by a single belt conveyor delivering lumps of up to 400mm into the sizer in-feed chute, which is simply partitioned in the middle to deliver approximately 50% of the material to each sizer. All the sized material is then collected onto a single takeaway conveyor via the out-feed chute and sent to the power plant.

The machines are almost identical and produce an average throughput of 1,800t/hr each, thereby generating an overall increased production average of 3,600t/hr through the system.