Publication : 18 June 2020


RBP: loss-in-weight feeder since 1977

Rising environmental standards are driving cement manufacturers to significantly reduce carbon emissions in their processes. In this context, the increasing adoption of alternative fuels proves to be both cost-effective and sustainable. The critical aspect is maintaining the optimal performance of the kiln. Indeed, the introduction of alternative fuels results in more complex combustion processes within the furnace, leading to the emission of harmful and hazardous fumes during operation.

In order to aid in the preservation of kilns, HASLER Group provides a solution for processing furnace dust by integrating its loss-in-weight feeder into existing chlorine bypass systems. This approach helps to mitigate the risks of fouling and blockage in the kiln, while ensuring that the reclaimed dust, which may pose a vaulting risk, is accurately dosed for the cement crusher.


  • High temperature: 150/200°C
  • Accuracy: ± 0,5 %
  • Flow range from 12 l/h to 14 m3/h
  • Accuracy consistency
  • Totally sealed system: no environmental impact
  • Low maintenance
  • No need for drop tests
  • Few wear parts
  • Manual or automatic refill
Scheme of RBP loss-in-weight feeder HASLER Group


  • Vertical stirrer
  • Forced fan P>0,55 kW
  • Inlet counter flange
  • Outlet counter flange
  • Digital load cells
  • High level probe
  • Junction box for motor
  • Support feet
  • Feeding gate
  • ATEX Version
  • Cartridge filter

Helmet valve and screw conveyor

  • Planetary screw, fluidized bottom with helmet valve.
  • Possibility of duplicating 2 outputs for feeding 2 dosers
  • Screw, helmet valve, vibrating bottom…
  • Flow rate to be expected approximately 10 times the maximum flow rate of the dispenser

Dosing systems & pneumatic injection

The degassing injection functions require precise material guidance. The HASLER Group, with its experience and know-how acquired since 1944, is able to dimension the transport element (suppressor) optimally, taking into account the specific characteristics of the material.


The flow rate at the feeder discharge point is maintained at the setpoint by the SCM3 electronic controller.
Detailed alarm information is provided via the display unit (PDU).

SCM-III controller for loss-in-weight feeder
  • SCM3 Field: Find out more
  • or Panel version: Find out more