This project concerns a pellet cooling system for a pellet production line in Russia. A large wood pellet manufacturing plant in the Krasnoyarsk region of Siberia, Russia, was producing 25 tons/hour of premium wood pellets for export to Europe and Asia. The plant had recently expanded their pellet mill capacity from 15 tons/hour to 25 tons/hour. The old cooling system (a small belt cooler) couldn't keep up. Dmitri started looking for a pellet cooling system that could handle 25-30 tons/hour with consistent cooling to room temperature.
This project concerns a pellet cooling system for a pellet production line in Russia. A large wood pellet manufacturing plant in the Krasnoyarsk region of Siberia, Russia, was producing 25 tons/hour of premium wood pellets for export to Europe and Asia.
The pellets were exiting the ring die pellet mill at 85-90°C. They were being dumped directly into shipping containers and bulk storage silos while still hot. The result was moisture migration – hot pellets cooled unevenly, causing condensation inside silos and containers. Some shipments arrived with moldy pellets. Customers in Denmark and South Korea were rejecting containers.
The plant manager (let's call him Dmitri) explained the problem: "We were in a rush to ship. The pellets were going straight from the pellet mill into the container. By the time they reached the customer, the core of the pile was still warm, moisture had condensed on the inside of the container, and mold was growing. We needed a proper cooling system for our pellet line."
The plant had recently expanded their pellet mill capacity from 15 tons/hour to 25 tons/hour. The old cooling system (a small belt cooler) couldn't keep up. Dmitri started looking for a pellet cooling system that could handle 25-30 tons/hour with consistent cooling to room temperature.
Name:
wood pellet cooler
Country:
Russia
Date:
2025
Capacity:
26 tons/hour
Model:
SKLF28x28
Main Motor Power:
2.2kW
Cooling time:
12 minutes
Exit temperature:
20-23°C
From the cooler table, the SKLF28x28 (2.2kW) was selected. Why this model?
Dmitri chose the SKLF28x28 as the new cooling system for their pellet line, replacing the undersized belt cooler.
Siberia has abundant forests. The plant uses:
The pellets are used for:
The SKLF28x28 arrived at the Port of St. Petersburg – Russia's second-largest port.
Shipping time from Qingdao to St. Petersburg is about 30-35 days. The machine was packed in a 40-foot container with:
Customs clearance in St. Petersburg took about 7 days. Total landed cost was about 24% higher than the FOB price.
Installation took three weeks. The old belt cooler was removed. The new SKLF28x28 was positioned on a raised platform to allow gravity discharge into the conveyor system. A concrete foundation (250mm thick) was poured.
The electrical hookup required 380V, 50Hz three-phase (Russian standard). The 2.2kW discharge motor plus hydraulic pack required a 40-amp breaker.
The first test run was with 6mm pine pellets at 88°C. The cooler was set to 12 minutes cooling time. Pellet temperature exiting: 22°C (ambient was 18°C). Moisture: 7.2%. No condensation in the discharge chute.
After six months of operation, Dmitri documented the following results:
Before (belt cooler – undersized):
After (SKLF28x28 counterflow cooler):
Production impact:
Here's what Dmitri said after six months (paraphrased from a conversation, translated from Russian):
"We were losing money on rejected shipments. The belt cooler couldn't handle our expanded capacity. The pellets were going into containers at 55°C, and by the time they reached Europe, they were moldy."
"The SKLF28x28 changed that. The counterflow design cools the pellets evenly. After 12 minutes, they're at room temperature. No more moisture migration. No more mold."
"The hydraulic swing tray discharge is gentle – no pellet breakage. The stainless steel top section resists moisture. The rotary airlock feeder is reliable."
"Would I recommend this cooling system? Yes. For any wood pellet exporter, a proper counterflow cooler is not optional – it's essential. The SKLF28x28 paid for itself in two months."
Wood pellets have unique cooling requirements. Here's why counterflow cooling works:
The SKLF28x28 uses counterflow cooling for the wood pellet production line:
The counterflow principle ensures that the hottest pellets meet the coolest air, maximizing cooling efficiency.
Wood pellets produce fine dust. The SKLF28x28 includes:
Dmitri's settings:
Proper airflow prevents dust buildup and ensures even cooling.
The SKLF uses a hydraulic swing tray discharge:
For wood pellets, the swing tray is preferred. Dmitri's pellets are 6mm diameter – they survive the swing tray with <1% fines.
Siberia's winters are extreme (ambient -20°C to -40°C). The SKLF28x28 handles winter conditions:
Dmitri's winter settings:
The SKLF28x28 shipped from Qingdao to Port of St. Petersburg, Russia.
Shipping time from Qingdao to St. Petersburg is about 30-35 days. The route goes through the South China Sea, past Singapore, across the Indian Ocean, through the Suez Canal, across the Mediterranean, and through the Baltic Sea.
The machine was packed in a 40-foot container. Customs clearance in St. Petersburg took about 7 days. Total landed cost was about 24% higher than the FOB price.
The truck transport from St. Petersburg to Krasnoyarsk was about 3,500km – roughly 60 hours.
After six months of running the SKLF28x28, Dmitri shared several observations:
RICHI provided several services that helped Dmitri get the SKLF28x28 operational:
For a wood pellet manufacturer exporting product or storing in silos, a counterflow cooler is essential.
Consider the SKLF28x28 if:
Consider a larger model (SKLF32x32) if:
For Dmitri's wood pellet plant, the SKLF28x28 was the right investment. It eliminated mold issues, allowed full utilization of their pellet mill, and paid for itself in two months.
If you're a wood pellet producer shipping product overseas or storing in silos, don't skip proper cooling. Hot pellets will cause condensation, mold, and rejected shipments. The cost of a cooling system is small compared to the cost of lost customers.
The SKLF28x28 pellet cooling system for pellet line uses counterflow technology to cool pellets from 90°C to ambient +5°C in 12 minutes. The hydraulic swing tray discharge prevents breakage. The result is stable, mold-free pellets that survive long-term storage and ocean shipping.
For wood pellet exporters, the math is simple: proper cooling = no mold = satisfied customers = repeat business.
RICHI offers documentation in Russian, cold climate guidance, hydraulic setup support, and remote assistance. Contact RICHI Machinery through the website with your pellet output, pellet size, and storage method for a recommendation. Tell them about your export application – they can help you select the right cooling system to prevent condensation and mold in shipping containers.
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