Upgrades and spare parts for DRW Rotor Weighfeeder

PFISTER® FEEDflex is part of our strategy to support customers’ sustainability targets. It enables you to dose very small quantities of pulverized fuel pulsation-free down to 60 kg/h and without CO spikes. This solution doesn’t affect the maximum feed rate your DRW feeder currently achieves. You can still use it up to its maximum capacity as required in the kiln start-up. This small upgrade can have a significant impact. Adding FEEDflex techology to your Pfister® DRW Rotor Weighfeeder enables you to operate with very low coal feed rates (in the range of 1:100 pulsation free dosing) while increasing your use of low-cost, environmentally friendly alternative fuels. The investment pays off in a very short time.

The gap width of your PFISTER® DRW rotor weighfeeder has the potential to make or break your operations. Too small and you risk blockages. Too large and feeding accuracy is impeded – not to mention the increased wear that threatens equipment life. The gap width has to be just right. The PFISTER® AutoGAP 2.1 eliminates the need for trial and error. It automatically adjusts and controls the upper gap width, ensuring the best possible performance of your DRW rotor weighfeeder. Three distance sensors measure and adjust the gap between the upper and lower housing during feeder operation. The motor current is also monitored constantly to support the quick-open function. You can opt for this system to be supplied with Wi-Fi dashboard to monitor equipment performance, including motor current, speed, GAP position, and to set new parameters on your Smartphone. PFISTER AutoGAP 2.1 is now available in ATEX, IECEx, CCCEx and HazLoc execution.

The new accordion stirrer optimizes the pneumatic conveying of the coal dosing process and ensures a stable material flow from the coal silo to the dosing point at the kiln or calciner.