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Pneumatic dense phase conveying systems for powders and granulates with pressure vessels are favored against lean phase conveying systems with rotary valves wherever one of the following criteria is important:
- The products have a fragile surface structure and must be transported without any damage.
- Mixtures should not segregate trough the transport.
- The product is abrasive, meaning that there is danger of high wear of pipelines and of the installed components.
- The consumption of air and thus the corresponding operating energy costs has to be reduced.
The Gericke dense phase conveying systems can be operated with air starting velocities from 2 m/s depending on the product and on the application, in comparison to lean phase conveying systems with starting velocities from 20 m/s. The solids loading (= amount of kg of product that can be transported with 1 kg of conveying medium) in dense phase conveying systems can reach up to 150, whereas in lean phase conveying systems the solids loading usually lies in the range of 5-10.
Depending on the application Gericke chooses from several operation modes the best suited conveying system. The pressure vessels and the additional components are custom-designed and hygienic as well as wear and heat resistant executions can be delivered. Gericke conveying systems are used in all bulk material processing industries for a very broad product range.
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