Complete Coated Urea Slow Release Fertilizer Production Line Project

Client Background

The client is an established fertilizer processor and supplier. For a long time, they focused on conventional granular urea and compound fertilizer trading. Intense homogeneous competition kept profit margins low.

Local growers have growing demand for high-efficiency slow-release nitrogen fertilizer for field crops, fruit trees and commercial plantations. To seize the high-end fertilizer market, the client decided to invest in a new coating production line to produce sulfur-coated urea and polymer-coated urea, enrich product portfolio and improve profit level.

Key Challenges

1. No mature coating process and stable production equipment; uneven coating film leads to inconsistent nutrient release and high defective rate.

2. Flexible release cycle required: 60–120 days to match different crop growth cycles.

3. Strict environmental standards: low dust emission and low energy consumption.

4. The operation team lacked experience in CRF production, requiring systematic training and long-term commissioning guidance.

5. Limited workshop space; the whole line needs compact layout and can connect with existing urea storage and packaging system.

Our Custom Solution

We supplied a full turnkey coated urea slow-release fertilizer production line with a capacity of 10 tons per hour.

✅ Main process: Raw urea feeding → preheating & surface treatment → rotary drum coating system (sulfur coating / polymer coating optional) → curing & cooling → polishing → screening → automatic weighing & packaging → dust collection system

✅ PLC centralized control: Coating material spraying flow, temperature and drum speed are precisely adjustable to control coating thickness and nutrient release curve

✅ Dual coating options: Switch between sulfur coating and resin/polymer coating according to market demand

✅ Anti-caking structure, low breakage rate, smooth and uniform coating on finished granules

✅ Equipped with enclosed dust removal system to meet environmental requirements

Project Results & Client Feedback

The production line finished installation, commissioning and formal operation within 45 days after equipment arrival.

- Stable continuous output: 10 t/h, annual capacity up to 70,000 tons (based on 300 working days)

- Coating uniformity ≥93%, nutrient release period stably adjustable from 60 days to 120 days

- Finished coated urea enjoys obvious price premium over ordinary urea, greatly improving gross profit

- The slow-release fertilizer reduces nitrogen leaching for end users, cuts fertilization frequency, saves labor and promotes crop yield

- Our engineers delivered on-site installation guidance, operator training, formula testing and remote after-sales support. Now the client can independently adjust coating formulas for different crops.

Client Quote

“We used to only sell basic urea with thin profit. This coated urea line changes our business model. The equipment runs steadily with consistent coating quality, and we get repeated orders from plantation customers.”

Why Choose Our Coated Urea Slow Release Fertilizer Line

- Turnkey service: Workshop layout design, equipment manufacturing, installation, commissioning, training and after-sales support all included

- Customizable capacity: 3–25 t/h for small, medium and large fertilizer factories

- Multiple coating technologies available: sulfur coating, polymer resin coating, composite coating

- Low energy consumption, low granule breakage and low dust

- CE compliant equipment, suitable for global agricultural markets

- Long-term spare parts supply and online technical support

We keep optimizing coating formulas and production technology to help more fertilizer manufacturers create high-value slow-release fertilizer products.