Dosing systems

Carbotechnik dosing systems for fluidising, dosing and pneumatic conveying

The Carbotechnik dosing system is designed for the continuous dosing and conveying of pulverised fuels and bulk materials, such as coal dust, limestone dust, wood dust, kaolin dust, bio dusts and other pulverised materials in combustion and processing systems. The amount of dust to be delivered is continuously adjustable to a very high level of precision and is conveyed pneumatically by a carrying air flow.

The technology makes it possible to deliver a uniform, constant supply of special fuels in compliance with the most current safety and firing technology requirements, and to generate a low-pulsation combustion process.

Functional description

The material to be dosed is entered by means of rotary valve from an upstream silo.

In the dosage machine the material is transformed into a fluidized, i.e. liquid-like state by an air blower.

For dosing, a horizontally arranged perforated disc is located in the material as a dosing unit. This is driven by a speed-regulated motor. The fluidised material flows evenly into the cavities of the perforated disc and is discharged via a conveying line out of the perforated disc via a carrier air stream. The dosage is always directly proportional to the drive speed and guarantees an absolutely uniform dosing rate.

This is in fact a case of volumetric dosing. However, it is a very close approximation of gravimetric dosing since the density of the fluidised product remains constant.

  • highly accurate dosage and wide range of dosage
  • uniform and pulsation-free transportation
  • reliable and low-maintenance operation
  • flexible quantity and capacity of the built-in dosage unit in a dosage machine
  • self-contained PLC controll with a data interface for BUS connection in an existing process control system




Technical details

The machines are designed and dimensioned according to customer requirements,
so the following benchmark data can only serve as a general reference.

Conveyed media: fluidisable, pulverised material
Equipment: in accordance with ATEX directives
Construction type: Shock pressure resistant up to 10 bar
Max. number of dosing units: 26
Max. number of outputs per dosing unit: 2
Max. number of conveying outputs:     52
Dosing/delivery rate per output: up to 20.000 kg/h


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