Lean Phase Conveying: Efficient Pneumatic Transport for Dry Bulk Materials
Lean phase conveying is an efficient and cost-effective method for transporting powders, granules, and other dry bulk materials through a pipeline using air at high velocity and low pressure. Ideal for applications requiring quick and continuous transfer over short to medium distances, lean phase conveying is widely used across plastics, chemicals, food processing, and pharmaceutical industries. At Margo Industries, we specialize in designing and manufacturing customized lean phase conveying systems tailored to your specific material handling needs. With over 50 years of engineering excellence, our systems deliver consistent flow, minimal downtime, and hygienic transfer — backed by smart automation and durable components.How Lean Phase Conveying Works
In lean phase conveying, a high-velocity air stream suspends and transports bulk material through the conveying line. The material-to-air ratio (1:2 to 1:8) ensures that the product remains fully suspended throughout the process. This conveying type is ideal for non-abrasive, free-flowing materials.Types of Lean Phase Conveying Systems
1. Positive Pressure Conveying
Used to move materials from one source to multiple destinations.2. Vacuum Conveying
Ideal for transferring materials from multiple sources to a single destination. Both systems offer flexibility based on plant layout, material characteristics, and process needs.Key Features of Our Lean Phase Conveying Systems
- Continuous, high-speed conveying of light to medium-density materials
- Suitable for conveying distances up to 100 meters
- Handles powders, granules, flakes, and small pellets
- Available in stainless steel or carbon steel construction
- Modular design for easy maintenance and scalability
- Integrated with automated feeding, batching, or packaging systems
Applications Across Industries
Our lean phase systems are designed to handle a wide range of materials for diverse industrial sectors:Plastics & Polymers
Resin conveying, PVC powder transfer, additive feedingFood & Agro
Sugar, flour, starch, rice husk, spices, grainsChemicals & Minerals
Fine powders, pigments, talc, calcium carbonatePharmaceuticals
Hygienic conveying of APIs, excipients, and fine powders Whether you’re feeding an extruder, loading a mixer, or transferring material to a storage silo, our lean phase solutions ensure dust-free, efficient, and reliable operation.Benefits of Lean Phase Conveying from Margo
- High throughput rates for continuous operations
- Energy-efficient with low-pressure air requirements
- Gentle handling minimizes material degradation
- Low maintenance with fewer moving parts
- Hygienic transfer through sealed conveying systems
Custom-Built for Your Plant
Every process is unique — that’s why Margo’s engineers analyze your material properties, plant layout, and production goals before designing the ideal system.Our Complete Turnkey Packages Include:
- Material feed hoppers
- Rotary airlock valves
- Blowers and filters
- Conveying pipelines and bends
- Control panels with SCADA/PLC integration
- Startup, testing, and on-site training
Lean Phase vs. Dense Phase Conveying — What to Choose?
| Feature | Lean Phase Conveying | Dense Phase Conveying |
| Air Pressure | Low (0.1 – 0.4 bar) | High (1 – 6 bar) |
| Material-to-Air Ratio | Low | High |
| Material Wear | Low (for soft materials) | Very low (for abrasive materials) |
| Suitable Distance | Short to medium (up to 100m) | Long distance (>100m) |
| Application Type | Continuous, high-speed transfer | Intermittent, low-velocity transfer |
Why Choose Margo Industries?
With over five decades of experience, Margo Industries is trusted by top manufacturers across India and abroad for advanced pneumatic conveying solutions.Our Advantages
- In-house design and fabrication
- Precision-engineered, customized systems
- Robust, long-lasting construction
- Expert installation and post-sales support
- Seamless integration with weighing, batching, and SCADA systems