
For pneumatic conveying applications where an accurate steady controllable feed into a process is required, Schenck Process RotoFeed and RotoScrew injection technology provides the answer.
Utilising the proven design of the Original Dome Valve and pressure vessel technology from the Schenck (Clyde) Process dense phase range, the addition of either a RotoFeed or RotoScrew acting as a volumetric metering feeder with a variable speed drive creates the injection system solution of choice. By incorporating weighing technology into the system a gravimetric version is created which can achieve accuracies of better than ±1% and a turndown ratio of 10:1.
Capable of injecting against back pressures such as in a chemical reactor, coal gasification process or blast furnace, or under a molten head of liquid metal such as in a copper bath smelter, or direct into a burner on a combustion process such as a cement kiln or flash furnace burner

Pneumatic Injection with RotoFeed technology provides the following advantages:
- Controllable Feed: Provides a steady, controlled feed of material into a process.
- Adjustable Injection Rate: The injection rate is adjustable and can be controlled to meet the needs of the process, 5:1 turndown is standard.
- Accurate Feed: The injection rate is accurately controlled, by the RotoFeed/ RotoScrew to ± 2 % by volume or ± 1 % by weight.
- Injection against pressure: The material can be injected into a pressurised environment.
- Integrated into Process: Injection systems normally form an integrated part of a larger process plant.
- Wide range of materials: RotoFeeds are used for fine fluidisable materials through granulars to 10 mm.

RotoScrew can feed cohesive or irregular and large materials as well as highly abrasive materials including:
- Metal concentrate
- Pulverised coal
- Granular coal
- Coke
- Lime/Limestone
- Iron ore
- Electronic scrap.’
For more information
E-mail : abhijit.mitra@schenckprocess.in


