Rotary Drum Systems for Thermal and Granulation Processes
Rotary drums are the heart of drying, granulation, cooling, coating and composting lines. Pro Makina designs and fabricates the complete drum system — shell, tyres, rollers, drive, internal flights, burner and air circuit — sized from your raw material analysis and capacity target.
Explore
Rotary Dryer
Direct fired drum dryers that reduce moisture of fertilizer, sand, sludge and organic materials.
Learn moreRotary Drum Granulator
Agglomeration drums forming round granules from powders with liquid binder dosing.
Learn moreRotary Cooler
Cooling drums that stabilise granule temperature after drying to protect quality and prevent caking.
Learn moreCoating Drum
Anti-caking and nutrient coating applications on granular fertilizer surfaces.
Learn moreCompost Drum
Rotating composting reactors that accelerate aerobic stabilisation of organic waste.
Learn moreWhy the Drum Must Be Engineered, Not Picked from a Table
Two materials with the same tonnage can need completely different drums. Evaporation load, particle behaviour, abrasiveness, stickiness and temperature sensitivity determine the drum diameter, length, slope, rotation speed, flight geometry and air velocity. A drum copied from a catalogue either underperforms or wastes fuel and capital.
Pro Makina sizes each drum with mass and heat balance calculations, selects shell thickness and materials for the duty, and designs the mechanical package — riding rings, support and thrust rollers, girth gear or friction drive — for continuous industrial operation.
Scope of a Complete Drum System
Drum body
Rolled and stress-relieved shell with riding rings, machined surfaces and inspection doors.
Drive group
Girth gear-pinion or friction drive with gearbox and motor sized for starting torque.
Internal flights
Lifting, cascading and transport flights matched to material behaviour along the drum.
Thermal system
Burner and combustion chamber for dryers; air volume and temperature profile per heat balance.
Air circuit
Fan, cyclone and filter selection integrated with the drum's process air requirements.
Sealing
Inlet and outlet seals limiting false air and dust emissions at drum interfaces.
Design Data We Ask For
These inputs drive the sizing of every rotary drum. Approximate values are fine to start; critical ones are confirmed by testing.
| Design input | Why it matters |
|---|---|
| Raw material and analysis | Determines temperature limits, corrosion and abrasion protection |
| Capacity (t/h or t/day) | Sets drum volume together with retention time |
| Inlet / target moisture (%) | Defines evaporation load and thermal power for dryers |
| Bulk density and particle size | Affects filling degree, flight design and air velocity |
| Operating hours per day | Converts daily tonnage into hourly design capacity |
| Available fuel type | Determines burner and combustion chamber design |
Final drum diameter, length and drive power are determined per project based on process calculations.
Why Pro Makina
Manufactured in Turkey
Design and fabrication are carried out in our own facility in Eskişehir, Turkey, with full in-house engineering control.
Project-based engineering
Every machine is sized around your raw material, moisture content and capacity target — not sold from a fixed catalogue.
Export experience
We prepare international technical proposals, shipping documentation and commissioning support for overseas projects.
Single point of responsibility
Process design, fabrication, automation and commissioning are managed by one engineering team.
Frequently Asked Questions
Which industries use Pro Makina rotary drums?
Fertilizer and compost production, sludge drying, mining and mineral processing, animal by-product processing, and recycling plants use our drying, granulation, cooling, coating and composting drums.
Do you supply the burner and air circuit with the drum?
Yes. For thermal drums we quote the complete system: burner, combustion chamber, fans, cyclone and filter, so the guarantee covers the whole thermal circuit, not just the shell.
Can an existing drum be revised instead of replaced?
Often yes. Shell sections, riding rings, rollers and flights can be renewed, and drives or sealing systems upgraded, after an on-site technical survey.
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Share Your Project Details
Send us your raw material, capacity and process data. Our engineering team will review your requirements and prepare a project-specific technical proposal.
Rotary Drum Systems for Thermal and Granulation Processes
Final dimensions, capacity and drive power are determined per project, based on your raw material analysis, moisture content and process calculations.