Introduction

Fertilizer production lines in Russia face unique dual challenges: large vertical height difference between production workshop processes, and high-temperature fertilizer granules after granulation & drying that require rapid cooling before packaging and storage. High residual temperature of fertilizer particles will lead to particle agglomeration, bag bulging, reduced fertilizer shelf life and poor product sales competitiveness, especially in Russia’s low-temperature ambient environment, unreasonable temperature difference cooling will also cause condensation inside particles and affect product quality.

Recently, we completed a custom integrated vertical conveying and cooling system for a Russian fertilizer manufacturer, aiming to realize synchronous vertical lifting and continuous cooling of fertilizer granules. This article shares the full project parameters, customized design points, equipment advantages and on-site operation effects of this case, providing reliable reference for global fertilizer plant bulk material conveying and cooling transformation projects.

Background introduction

The Russian customer runs a compound fertilizer granule production plant. The finished high-temperature fertilizer granules need to be transported from the lower workshop to the upper packaging workshop, while completing continuous cooling during the conveying process. All original working condition parameters confirmed on site are as follows:

1.1 Material Basic Parameters

• Material Type: Organic & Compound Fertilizer Granules

• Bulk Density: 0.8 ~ 1.0 kg/L (800-1000kg/m³)

• Material Characteristics: Non-viscous, slight abrasiveness, easy to agglomerate under high temperature, no corrosion to carbon steel and 304 stainless steel

1.2 Conveying & Cooling Technical Indicators

• Rated Conveying Capacity: 1000kg/h (1 ton per hour)

• Inlet Material Temperature: 70℃ (high temperature outlet after granulation process)

• Outlet Material Temperature: 20℃ (qualified temperature for automatic packaging and warehouse storage)

• Inlet Height: 450mm from ground

• Outlet Height: 4500mm from ground

• Total Vertical Lifting Height: 4050mm

1.3 Customer Core Pain Points

1. Separate elevator and cooling equipment occupies large workshop space, unable to adapt to the compact layout of the customer’s existing plant;

2. Traditional vertical elevators have no cooling function, requiring additional rotary coolers, increasing production line investment and failure points;

3. Russia’s outdoor low temperature all year round requires equipment with excellent cold resistance, avoiding equipment shell frosting, motor startup failure and sealing aging in winter;

4. Fertilizer granules are easy to break during high-speed lifting, requiring low-speed stable conveying design to ensure complete particle shape.

2. Our Custom Integrated Conveying & Cooling Solution

Combined with the customer’s height difference, hourly output, 50℃ large temperature drop requirement and Russia’s special cold climate, we abandoned the traditional split structure of elevator + independent cooler, and adopted a vertical bucket elevator with built-in circulating air cooling system, realizing one machine for two purposes: vertical material lifting + synchronous gradient cooling. The overall solution is highly matched with on-site installation size and process logic.

2.1 Overall Equipment Size Matching

• Feed port reserved height strictly matches customer’s on-site equipment: 450mm, seamless docking with front granulation discharge port;

• Discharge port fixed height: 4500mm, directly connected to the upper packaging machine feeding bin, no need for secondary material transfer;

• Integrated closed box structure, no dust overflow during fertilizer granule conveying, meeting Russia’s industrial environmental protection emission standards.

2.2 Gradient Cooling System Design (Core Customization)

Aiming at the requirement of cooling granules from 70℃ to 20℃ in limited vertical lifting distance, we designed a sectional circulating air cooling channel inside the elevator casing:

1. First cooling section (lower segment): Rapid forced air cooling, reduce material temperature from 70℃ to 45℃ in the initial lifting stage, avoid high-temperature particles sticking to buckets;

2. Second cooling section (middle segment): Natural heat dissipation + low-speed air circulation, continuous uniform cooling, prevent material internal and external temperature difference and condensation;

3. Third cooling section (upper segment): Constant temperature air supply, stabilize outlet material temperature stably at 18-20℃, fully meet packaging and storage standards.

The whole cooling process adopts indirect air cooling, no direct contact between cooling air and fertilizer granules, will not cause moisture fluctuation of finished fertilizer, and will not affect fertilizer effective components.

2.3 Conveying System Optimization Adapted to Fertilizer Granules

• Low-speed stable operation design: Matching 1TPH small flow demand, optimize bucket spacing and running speed, reduce particle breakage rate to less than 1.5%;

• Anti-sticking material buckets: Smooth polished carbon steel buckets, adapted to 0.8-1.0kg/L medium-density granules, no material hanging and residual materials inside buckets;

• Cold-resistant overall configuration for Russia: Equipped with low-temperature resistant motor, cold-proof sealing strip and anti-frosting shell, equipment can operate stably in ambient temperature of -35℃ ~ +40℃, adapting to Russia’s severe winter working conditions;

• Overload protection & anti-backward device: Prevent material backflow caused by sudden power failure, ensure safe operation of vertical high-drop conveying.

3. Why Choose Our Custom Fertilizer Conveying & Cooling Equipment?

3.1 One-machine dual function, save plant space and cost

Integrate vertical lifting and material cooling into one closed equipment, no need to purchase independent cooling machines and intermediate conveying equipment, reduce equipment procurement cost, pipeline layout and later 

maintenance cost, especially suitable for old workshop renovation projects with limited space.

3.2 Targeted customization for Russian low-temperature climate

We have rich experience in equipment supporting for Russia, Central Asia and other low-temperature regions. All exported standard configurations add low-temperature resistant electrical components, anti-frosting shell design and 

cold-proof sealing structures, adapting to long-term low-temperature working environments without modification.

3.3 Accurate temperature control for fertilizer production process

Aiming at the easy agglomeration characteristic of high-temperature fertilizer granules, segmented cooling avoids rapid cooling condensation problem, ensures uniform internal and external temperature of granules, protects fertilizer

 activity, and improves finished product storage cycle.

3.4 Full-size non-standard customization

We can fully customize inlet height, outlet height, lifting height, hourly output and cooling temperature difference according to customers’ on-site drawing parameters, perfectly docking with front and rear process equipment without 

changing customer’s existing production line layout.

4. Conclusion & Inquiry Guide

This 1TPH fertilizer granule vertical conveying and cooling customized project fully solves the customer’s process height difference and material cooling dual difficulties. For fertilizer production enterprises, matching conveying and 

cooling equipment according to accurate working conditions is the key to improving production efficiency and reducing product defective rate.

If you also have similar demands: granule/powder material vertical conveying, synchronous cooling in conveying process, low-temperature regional equipment customization, non-standard inlet and outlet height design, welcome to 

send us your detailed working condition parameters (material density, output, temperature difference, inlet/outlet height, ambient temperature), our professional engineering team will provide you with free 3D drawing, parameter 

selection report and quotation within 24 hours.