ADSD Consulting Private Limited
Sulphur Coated Urea (Urea Gold)
Advanced Sulphur & Polymer Coated Urea Plant Technology in India for Controlled Release Fertilizers.
Sulphur-Coated Urea (SCU) is a Slow Release Nitrogen Fertilizer designed to improve Nitrogen Use Efficiency (NUE), Enhance Crop Productivity, Improve Sulphur Deficiency in Soil and support sustainable Agriculture for Higher Yield and Fewer Urea Consumption. ADSD Group provides State of the Art Proven & Advanced Urea Coating Technology and End-to-End Engineering & Turnkey Project Execution on Single Point Responsibility for Sulphur Coated & Polymer Coated Urea Plants in India and worldover.
TECHNOLOGY & PROCESS DETAILS
SCU Plant — Raw Materials, Product and Utilities Details
Raw Materials
| Material | Specification |
|---|---|
| Urea | 99% · 1.0–2.4 mm · H₂O 0.3% max. |
| Sulphur | 99.93% min. purity |
| Sealant | Proprietary items |
| Conditioner | Proprietary items |
Product & Performance
37%
Nitrogen (min., dry)
17%
Sulphur coating
< 1%
Process wastage
17.5–35%
7-day dissolution
TECHNOLOGY & PROCESS DETAILS
Nitrogen Release Profile and Factors Affecting Release
Factors Affecting SCU Release
Conventional Urea vs SCU Dissolution Chart
Type of Substrate
Granule/Prills Quality sets the Coating needed
Sulphur Quality
99.93% min. purity
Coating thickness
More coating → Slower Release
Sealant Type & Amount
Seals Cracks and Pores in the Shell
Conditioning Agent
Free-flow; Protects the Coating
Process Temperature
Pre-heat, Spray and Cooling Control
TECHNOLOGY & PROCESS DETAILS
SCU Soil Release & Charging Cycle Overview
Sulphur Coated Urea (SCU), also introduced as Urea Gold in India, is a Slow Release (controlled release) Nitrogen Fertilizer.
The Sulphur Shell Slows Down the Breakdown of Urea, Releasing Nitrogen Gradually into the Soil Over a Period of 40 to 60 Days as Soil Microbes Break Down the Sulphur Layer and Water Penetrates the Granule.
Due to the Slow-Release Mechanism, the Application Cycle (Gaps Between Applications) for SCU Is Longer Than That of Standard Urea, and Fewer Split Applications Are Required.
| Stage | What Happens in the Soil | Timeline |
|---|---|---|
| Initial Phase | Water Enters Microscopic Pores in the Sulphur Shell. Initial Dissolution Begins. | 0 to 7 days |
| Peak Release | Soil Bacteria Oxidize Sulphur; Nitrogen Release Peaks to Match Early Active Vegetative Growth. | 15 to 45 days |
| Extended Release | Remaining Nitrogen Slowly Leaks Out, Supplying Nutrients Through Early Reproductive Stages. | 45 to 60 days |
ADSD Scope for Urea Coating Plants on LSTK Basis
Basic & Detailed Engineering.
Proven Process for Coating Technologies.
Pilot Testing of Raw Materials.
Procurement, Manufacturing, Fabrication & Supply of Equipment's.
Civil Design and Site Construction.
Erection within Host Urea Complex & Tapping of Urea Feed Lines and Utilities to B/L.
Commissioning, PGTR & Handover.
Operators Training, O&M Support Services and Long Term Spares Support.
One Plant, Many Products
| Technology | How It Works | Key Benefit |
|---|---|---|
| Polymer Coated Urea (PCU) | Thin polymer membrane; temperature-driven diffusion gives precise release over 45–180 days. | Premium CRF for horticulture, turf & high-value crops |
| Sulphur Coated Urea (SCU) | Sulphur shell + sealant; gradual release and 17% S nutrient in the same granule. | Controlled release + sulphur nutrition |
| Polymer-Sulphur (PSCU) | Sulphur base with thin polymer top-coat for tighter release at lower cost than PCU. | Premium performance, economical |
| Zinc Coated Urea | Zinc micronutrient uniformly bonded on the granule surface. | Corrects India's most common micronutrient gap |
| Phosphate / Nutrient Coated | Phosphate and nutrient blends bonded on urea; no segregation in bag or field. | Balanced nutrition in every granule |
| Neem Coated Urea | Neem oil acts as a natural nitrification inhibitor, slowing N loss. | Supports GOI neem-coating mandate |
| Micronutrient & Bio Coatings | Boron, humic/fulvic, seaweed and bio-inputs coated to client recipe. | Custom specialty grades |
One Plant, Many Products
Polymer Coated Urea (PCU)
Thin polymer membrane; temperature-driven diffusion gives precise release over 45–180 days.
Key Benefit: Premium CRF for horticulture, turf & high-value crops.
Sulphur Coated Urea (SCU)
Sulphur shell + sealant; gradual release and 17% S nutrient in the same granule.
Key Benefit: Controlled release + sulphur nutrition.
Polymer-Sulphur (PSCU)
Sulphur base with thin polymer top-coat for tighter release at lower cost than PCU.
Key Benefit: Premium performance, economical.
Zinc Coated Urea
Zinc micronutrient uniformly bonded on the granule surface.
Key Benefit: Corrects India’s most common micronutrient gap.
Phosphate / Nutrient Coated
Phosphate and nutrient blends bonded on urea; no segregation in bag or field.
Key Benefit: Balanced nutrition in every granule.
Neem Coated Urea
Neem oil acts as a natural nitrification inhibitor, slowing N loss.
Key Benefit: Supports GOI neem-coating mandate.
Micronutrient & Bio Coatings
Boron, humic/fulvic, seaweed and bio-inputs coated to client recipe.
Key Benefit: Custom specialty grades.
About Us
ADSD Consulting Private Limited
ADSD Adsorbents & Specialities
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Delivering integrated Engineering, EPC, Consulting, Chemicals & Supply Chain and Activated Carbon solutions to Industries Worldwide.
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- +91 9958582437
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Pin 201307, NCR Delhi, India
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ADSD Group, headquartered in Noida/Delhi (NCR), India, ADSD Group began its journey in 2017 with the establishment of its flagship company ADSD Consulting Pvt. Ltd.
Engineering & EPC
Supply Chain
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Contact Us
- info@adsd.in
- +91 96506 93468
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Anthurium Office Space, 1103-1105, Sector-73, Noida,
Pin 201307, NCR Delhi, India
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