double roller press granulator

Double Roller Press Granulator – Dry Granulation Expert for Modern Fertilizer Production

Henan Yuxing Intelligent Equipment Co., Ltd. brings you the advanced double roller press granulator (Model XGJY-37/55/75), engineered from over 20 years of fertilizer industry expertise. This industrial-grade dry granulation system delivers impressive capacity ranging from 2 to 7 t/h with power options of 37–75 kW, producing uniform pellets sized 2–16 mm.

Our equipment achieves a granulation rate exceeding 90% while eliminating drying processes entirely, cutting energy consumption by 30–50%. With machine weights between 1500–3500 kg and robust construction, it handles diverse materials at density ranges of 0.8–1.4 g/cm³. Backed by authoritative Chinese quality certifications and exported to 50+ countries, Yuxing's granulator represents proven reliability for compound fertilizer, chemical processing, and biomass pellet production lines.

How Double Roller Press Granulator Works?

The working principle centers on high-pressure mechanical extrusion without heat or liquid binders. Powder materials are gravity-fed or force-fed into the gap between two counter-rotating rollers.

As the rollers turn inward, hydraulic systems apply controlled pressure (typically 20-40 MPa) to compress the powder. The roller surfaces feature customized patterns—ball-shaped pockets, pillow designs, or strip configurations—that shape the material into dense sheets or briquettes.

These compressed sheets then pass through a crushing and screening system. The result is uniform, high-density granules ready for immediate packaging. The entire process generates minimal heat, making it perfect for heat-sensitive compounds.

Our frequency-conversion drives allow precise roller speed adjustment. This ensures optimal granulation for materials with varying compressibility and moisture content (recommended below 5%).

Technical Specifications

Key Advantages & Property Features

Your production efficiency depends on equipment that delivers consistent quality without compromising material integrity. The product eliminates wet granulation challenges like wastewater treatment and thermal degradation.

High Material Compatibility: Our alloy steel rollers (9Cr2Mo or specialized stainless steel) resist abrasion and corrosion. This extends operational life to 2,000–4,000 hours before resurfacing needs arise.

Energy Savings You Can Measure: By removing the drying stage entirely, you reduce carbon footprint significantly. This dry-process technology saves 30–50% energy compared to traditional wet methods.

Superior Granule Strength: Physical compression creates molecular bonding that produces high-density pellets. Your granules maintain integrity during storage, transport, and application without crumbling.

Customizable Roller Patterns: We design roller surfaces specific to your material characteristics. Ball pockets for compound fertilizers, strip patterns for chemical powders, or custom configurations for specialized applications.

Precision Control Systems: Hydraulic pressure monitoring and frequency-controlled motors give you full command over granule density and size distribution. Our PLC systems integrate seamlessly with automated production lines.

Application Scenarios Across Industries

Compound Fertilizer Production: Your NPK, ammonium sulfate, and potassium chloride lines benefit from moisture-free granulation. The double roller press granulator maintains chemical purity without liquid binders that might react with active ingredients.

Chemical & Metallurgical Processing: Carbon black, coal powder, and catalyst manufacturing require controlled granulation environments. Our dry-press method preserves material properties while creating flowable, dust-free products.

Pharmaceutical & Feed Additives: Heat-sensitive micro-nutrients demand gentle processing. Since our system generates minimal friction heat, you protect delicate compounds. Optional water-cooling systems in roller cores handle extreme cases.

Biomass Pellet Production: Organic waste materials transform into uniform fuel or soil amendment pellets. The adjustable density range (0.8–1.4 g/cm³) accommodates diverse biomass feedstocks.

Industrial Minerals: Potash, gypsum, and other mineral powders achieve consistent granule formation for easier handling and application.

Quality Control Standards

Professional purchasers trust equipment backed by rigorous testing protocols. Our quality assurance follows international standards like ASTM and DIN specifications.

Roller Surface Hardness Testing: Rockwell hardness measurements (HRC 55-60) verify wear resistance before equipment leaves our facility.

Granule Strength Analysis: We conduct compressive strength tests on output samples. This ensures your granules withstand transport stresses without breakage.

Hydraulic System Integrity: Pressure-holding tests confirm consistent extrusion force throughout operation cycles. This prevents granule size variations that affect product quality.

Material Spectroscopic Analysis: We verify roller alloy composition to guarantee corrosion resistance when processing acidic or alkaline materials.

Particle Size Distribution: Sieve analysis documents uniformity. You receive detailed reports showing how your granules meet specified size ranges.

All Yuxing equipment passes authoritative testing by Chinese technical bureaus. Our machinery meets ISO 9001 and CE certification requirements for global deployment.

Customization & Global Support Capabilities

Your unique production requirements deserve tailored solutions. Yuxing offers comprehensive ODM/OEM services developed through projects across 50+ countries.

Electrical System Adaptation: We configure voltage standards, Siemens or Schneider components, and multi-language HMI interfaces matching your regional requirements.

Capacity Scaling: Whether you need entry-level 2 t/h systems or expanded 7 t/h configurations, our modular design accommodates growth.

Environmental Compliance: Dust collection systems, noise reduction enclosures, and safety interlocks adapt to your local regulations.

Turnkey Project Delivery: Our engineering team provides factory planning, process design, installation, commissioning, and operator training. You receive 24/7 remote video support and lifetime technical assistance.

Logistics Expertise: Experienced in 40GP container optimization, open-top transport for oversized components, and modular disassembly for complex shipping scenarios.

Fast Production Cycles: Standard models ship immediately from stock. Custom configurations complete within 15–20 days thanks to our mature supply chain.

Strategic cooperation with Shandong Baolai Lailai Group enhances our service. You access integrated solutions combining equipment, microbial agents, and fermentation technology.

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FAQ

Q: Why do my granules have low hardness?

A: Typically this results from insufficient hydraulic pressure or excess material moisture. Check that your pressure gauge reads within specification and verify material moisture stays below 5%. Our technicians can remotely diagnose pressure system issues.

Q: What is the typical roller lifespan?

A: High-quality alloy rollers operate 2,000–4,000 hours before requiring resurfacing or replacement. Actual lifespan depends on material abrasiveness. We provide wear pattern analysis to predict maintenance schedules.

Q: Can it process heat-sensitive materials?

A: Yes. The dry-press method generates minimal friction heat. For extremely sensitive compounds, we integrate water-cooling channels directly into roller cores. This maintains material integrity throughout granulation.

Q: How do I prevent material sticking to rollers?

A: Adjust scraper blade positioning for immediate resolution. For persistent issues, we recommend alternative roller surface patterns selected during the design phase. Ball-shaped pockets versus strip configurations affect material release characteristics.

Q: Is binder always unnecessary?

A: Most materials achieve granulation through molecular forces under high pressure. Extremely dry or non-plastic materials may benefit from trace lubricants. Our material testing service determines optimal processing parameters for your specific feedstock.

Contact Us

Ready to transform your powder processing efficiency with a double roller press granulator? Connect with Yuxing's engineering team at yuxing@hnyxmachinery.com to discuss your project requirements.

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