Laboratory Powder Spray Gun Coating Machine and Granules Polishing Machine

Our Laboratory Powder Spray Coating System represents the pinnacle of precision coating technology, specifically engineered for R&D and small-scale production of coated granules. This advanced integrated system combines powder spray coating and granules polishing in a single, compact unit, enabling researchers and manufacturers to develop perfect coating formulations and achieve commercial-quality finish at laboratory scale.

Utilizing innovative electrostatic powder spray technology and gentle mechanical polishing, this machine provides unprecedented control over coating thickness, uniformity, and surface characteristics - making it an indispensable tool for pharmaceutical, fertilizer, food, and chemical industries.

• Advanced Powder Coating System - Precise powder deposition (95%+ material utilization), micro-droplet spray technology for uniform coating, and patented anti-clogging nozzle design
• Intelligent Process Control - PLC-controlled operation including airflow and spray parameters
• Dual-Function Design - Combines coating and polishing functions in a compact unit with transparent process chamber for visual monitoring
• Corrosion Resistance - 316L stainless steel construction for easy cleaning, maintenance, and long service life
• Compact Footprint - Suitable for benchtop or floor-mounted operation with quiet performance

Granular material is fed continuously or in batches into a rotating drum. As the drum rotates, an internal lifting mechanism gently picks up and dumps the granules, forming a uniform "granule bed." Precision spray guns atomize the coating solution (such as polymer resin, sulfur, syrup, etc.) and evenly distribute it over the tumbling granules.

Simultaneously, heated air passes through the drum, rapidly drying the coating solution upon contact with each granule. This process forms a strong, continuous film around the granules. Finally, the coated granules are discharged for further cooling or packaging.

This versatile coating machine is ideal for a wide range of coating applications on granules and pellets, including:

• Slow-Release & Controlled-Release Urea Fertilizers: Coating with polymer-based membranes to delay nutrient release
• Sulfur-Coated Urea (SCU): Applying uniform layers of molten sulfur onto urea granules
• Urea with Micronutrients: Coating granules with essential trace elements like Zinc and Boron
• Anti-Caking Agent Coating: Applying powders or liquids to improve storage and flowability
• Other Applications: Seed coating, pesticide granule coating, and coating for chemical and food products

Note: We specialize in providing custom-designed solutions. All specifications can be tailored to meet your specific production requirements.

• Proven Expertise: Decades of experience in designing mixing, granulation, and coating equipment for the fertilizer industry
• End-to-End Support: Comprehensive support from initial consultation to installation, commissioning, operator training, and lifelong after-sales service
• Exceptional ROI: Robust construction and precision engineering minimize downtime and maintenance costs, maximizing productivity and profitability

Contact Us Today for a Detailed Quotation and Customized Solution!

Let our Stainless Steel Coating Machine be the cornerstone of your advanced production.