Triple Pass Dryer Three Drum Rotary Drying Machine Compact Design Energy Saving Equipment for Kaolin Clay
What Buyers Ask Us Before Ordering
1. What does it cost to dry one ton of material? Fuel is the largest cost in drying. The three-pass design burns 30-40% less fuel than a single-drum dryer, and the multi-fuel furnace lets you run on the cheapest fuel available locally — coal, biomass, gas or diesel.
2. How long do the lifting plates and lining last? Lifting plates are made of wear-resistant steel and are quick to replace; the thickened shell and lining are built for years of 24/7 service, and spare parts stay in stock for the life of the machine.
3. How fast can the line be installed and started? The dryer ships pre-assembled; foundation and erection take about one week, and our engineers stay on site until the line runs at its rated capacity.
Three-cylinder vs. Single-drum at a Glance
| Item | three-cylinder dryer | Single-drum dryer |
| Fuel consumption | 30-40% lower | Reference baseline |
| Floor space needed | About half | Full footprint |
| Shell length, same capacity | 2.2-3.6 m diameter, short shell | Usually 12-25 m long |
| Final moisture stability | Within ±0.2% | Wider fluctuation |
| Fuel options | Coal, biomass, gas, diesel | Often single fuel |
What You Can Dry with It
Glass & Foundry: Silica sand, quartz sand — dried below 0.5% moisture.
Construction & Aggregates: River sand, sea sand, gravel, clay and dry-mix mortar materials.
Cement & Metallurgy: Slag, coal slime, iron ore powder and mineral tailings.
Energy & Biomass: Sawdust, wood shavings, fly ash and coal gangue.
Technical Parameters
| Model | Diameter of outer cylinder (m) | Length of outer cylinder (m) | Drum volume (m³) | Rotation speed (r/min) | Max. air flow temperature (℃) | Production capacity (t/h) | Power (kW) |
| 2.2m*5m | 2.2 | 5 | 18.99 | 4-10 | 700-750 | 12-20 | 5.5x2 |
| 2.5m*6m | 2.5 | 6 | 29.43 | 4-10 | 700-750 | 18-28 | 7.5x2 |
| 2.8m*6m | 2.8 | 6 | 36.92 | 4-10 | 700-750 | 25-35 | 11x2 |
| 3.0m*6m | 3 | 6 | 42.39 | 4-10 | 700-750 | 30-40 | 7.5x4 |
| 3.2m*7m | 3.2 | 7 | 56.27 | 4-10 | 700-750 | 35-55 | 11x4 |
| 3.6m*8m | 3.6 | 8 | 81.39 | 4-10 | 700-750 | 55-75 | 18.5x4 |
The Three-Pass Drying Cycle
1. Even Entry: A screw feeder meters material into the innermost cylinder at a steady rate — nothing clogs, everything dries evenly.
2. Full
3. Heat Reused Three Times: The gas sweeps the inner, then the middle, then the outer cylinder — one furnace load of heat does the work of three.
4. Moisture Stepped Down: Evaporation happens gradually, pass by pass, protecting particle quality and avoiding over-drying.
5. Clean Air Out: The cyclone and bag filter clean the exhaust before release, meeting local emission rules.
The Customer Site
1.Factory-Direct Pricing: You buy from the manufacturer in Zhengzhou — no middleman markup, transparent quotes and honest lead times.
2.Sized From Your Sample: Send your material and target moisture; our engineers return a free proposal with the right model and line layout.
3.One Supplier, One System: Feeder, furnace, dedusting and control panel are engineered and delivered together, so every part of the line is matched.
's Service
Every dryer ships with a 12-month warranty, a stocked spare parts list and remote troubleshooting. Our engineers travel for on-site installation and commissioning, and stay available 24/7 by
FAQ
1. My material is sticky — will it clog the dryer?
Anti-stick lifting plate designs and adjustable rotation speed handle clay, slime and other sticky feeds without clogging. For oversized lumps we recommend a screen or crusher ahead of the dryer.
2. Can you guarantee the rated capacity and final moisture?
Yes. The model is sized from your actual material sample, and capacity and final moisture are verified together during commissioning before handover.
3. How is the machine shipped and installed?
The dryer ships in sections by container or flat rack with all drawings. Installation takes about one week and is supervised by our engineers, who also train your operators.
4. What after-sales support do I get?
A 12-month warranty, lifetime spare parts supply, remote troubleshooting and priority on-site service, plus operator training at commissioning.




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Step 1
Payment and order readiness
Minimum order: 1 Units
Payment terms, specifications, and order details are confirmed before preparation begins.
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Step 2
Preparation
15 days
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Step 3
Packaging and dispatch
Ocean freight via Maersk · Approx. shipping fee: $ 0.84 for 1 unit · Transit time: Est. 17-24 days
Final packing, freight, and delivery dates are confirmed before dispatch.
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