Engineered Pneumatic Conveying Solutions
CMT designs dilute and dense phase conveying systems—vacuum, pressure, or venturi driven—to move powders, pellets, and granular materials safely, efficiently, and dust‑free.
Dilute Phase Conveying
How Dilute Phase Works
Material is entrained in an airstream and conveyed at high velocity in a suspended state. Systems can be configured as pressure (one source → many destinations) or vacuum (many sources → one destination), or combined. Proper air‑to‑solids ratio, line size, and velocity control ensure reliable transfer with manageable wear and attrition.
- Flexible routing with tees and diverters; simple start/stop sequencing
- Compatible with bulk bag unloaders, hoppers, day bins, mixers, and receivers
- Wide material window: powders, pellets, and blends
Pressure Systems
Used for longer distances and higher capacities. Air pressure pushes material through the line at relatively high velocities. Best for powders and non‑friable granules.
Vacuum Systems
Excellent dust control and product containment. Ideal for multiple pick-up points, sanitary applications, and conveying over short to long distances when properly engineered (hundreds of feet are achievable). Often preferred where leaks must draw inward, not out.
Venturi Eductors for Dilute Phase
Venturi eductors eliminate rotary valves and mechanical feeders. With no moving parts, they provide reliable conveying of pellets, granules, and abrasive powders. Commonly paired with bulk bag unloaders and other feed points.
Dense Phase Conveying
How Dense Phase Works
Dense phase uses high pressure and low velocity to move material in slugs or plugs along the conveying line. This reduces product degradation and pipeline wear, making it ideal for abrasive, friable, or fragile products. Systems often use pressure vessels or blow tanks with advanced controls to manage slug velocity.
- Gentle handling minimizes attrition and breakage
- Lower air volumes and reduced line wear
- Excellent for long distances and high‑value products
Common Pneumatic Conveying Systems
- Bulk Bag Unloading Systems – integrate with pneumatic lines for dust‑free transfer.
- Silo Systems – efficient filling, storage, and discharge of bulk solids.
- Railcar Unloading – high‑capacity systems for plastics, minerals, and grains.
- Truck Unloading – vacuum or pressure systems for mobile deliveries.
Related Products
Compare Dilute vs Dense Phase
| Dilute Phase | Dense Phase | |
|---|---|---|
| Conveying Velocity | High (3,500–9,000 ft/min) | Low (400–1,200 ft/min) |
| Pressure | 0–15 psig typical | 15–50+ psig |
| Best For | Powders, granules, non‑friable products | Abrasive, friable, or fragile products |
| Advantages | Simpler, lower cost, flexible routing | Gentle handling, less wear, longer runs |
| Considerations | Higher velocity = more abrasion/product attrition | Higher capital cost, requires pressure vessels |
Let’s Design Your Pneumatic Conveying System
Share your product, throughput, distance, and plant requirements. We’ll engineer a dilute or dense phase conveying system that delivers reliability, efficiency, and dust‑tight performance.
Request a Quote Call 704-704-6151