Pneumatic injection

Schenck Process has designed pneumatic injection solutions across many industries and has consistently improved productivity rates, system reliability, availability and performance for organizations that operate within markets such as iron and steel and non-ferrous metals.

Wherever there is a need to inject powdered or granular materials, into a process environment, there is a potential application for Schenck Process injection technology. Products can be continuously injected into process environments at smooth, easily controlled rates, with accuracies +-0.5% and against back pressures of 20 barg or more.

The RotoScrew is a Pneumatic Injection device for introducing materials into an enclosed pipeline. It can be used for promoting SteamPhase flow in long distance conveying applications or for regulating a steady stream of material in a controlled manner into a process. The unit is an accurate volumetric screw feeder which is incorporated into a set of high pressure conveying vessels with a low differential pressure to ensure low wear of the pipeline.

The RotoScrew has proved to be an effective and highly reliable method of conveying material from a single collection point to a process vessel, for example granulated or lump materials, through a sub liquid level lance furnace raceway or discharged into a void as required by the process. The RotoScrew is mounted in a batch transfer vessel to control the leaving material. This vessel is named the dispense vessel. It can be used alone where process delivery is intermittent and small, but is usually incorporated into a tandem pair working together or a lock and dispense pair working together to deliver a constant stream of material to the process.

The RotoScrew system has been used in Power industry, to provide a constant feed of materials such as coal, wood pellets and saw dust into the combustion process allowing for a more efficient method of handling these fuels.

Applications of Pneumatic Injection

• Blast Furnace Coal Injection
• Granular Coal Injection
• Pulverized Coal Injection
• Deep Ladel Injection
• Torpedo Injection
• Flux Feed
• FeO Injection
• Electric Arc Furnace (EAF) Injection
• AOD Injection
• Cupola Injection
• Oxy-Fuel Burners
• CT Converters Slag Furnace
• Reverbatory Furnace
• Peirce Smith Converter
• Blast Furnace
• Flash Furnace
• Bath Smelter
• Flash Smelter
• Flash Converter
• Codelco CT Converter