company news about 1# Shipment of CRF Plant

This shipment covers the first batch of a complete Controlled Release Fertilizer (CRF) production plant, with the main equipment being a 1 ton batch-type fluid bed coater. The system is designed to produce controlled-release fertilizer by coating soluble fertilizer granules with a polymer membrane layer. During the coating process, fertilizer pellets are fluidized inside the processing chamber by upward airflow, while the coating solution is atomized through a two-fluid spray gun and deposited evenly onto the granule surface. By precisely controlling temperature, air volume, spray rate and atomization pressure, a uniform and dense controlled-release layer is formed, which regulates the nutrient release rate according to crop growth demand. The finished product features stable release curve, high roundness, low breakage rate and consistent quality, fully meeting the production requirement of modern agricultural fertilizer plants.

### Scope of Supply

The shipment includes the complete coating process line: air handling unit with heater, main fluidized bed host, product container, expansion chamber, filter system, two-fluid spraying system with peristaltic metering pump, exhaust fan, PLC electric control cabinet, and all interconnecting pipelines, valves and instruments. All parts that come into contact with fertilizer material are manufactured from 316L stainless steel to ensure corrosion resistance against salt solutions and chemicals, while structural support parts are made of 304 stainless steel. Welding seams are ground smooth and free of dead corners, making the equipment easy to clean and preventing cross contamination between different formulations. The complete system has been matched, sized and assembled to realize continuous and stable batch production of controlled-release coated fertilizer.

### Main Equipment Parameters

The fluid bed coater adopts a round product container with a 1 ton batch capacity per loading. The processing air is supplied by a high-pressure centrifugal fan and heated by a thermal oil / electric heating system to the preset inlet temperature. The spraying system is composed of several two-fluid atomizing spray guns arranged on the top spray lance, which distribute the coating liquid evenly across the fluidized bed. Atomizing air pressure and liquid flow rate can be adjusted independently on the control panel to adapt to different coating formulations, granule sizes and release-rate requirements. The dust collector at the top filters and returns fine powder back into the process, reducing material loss and ensuring clean workshop operation. Temperature, air flow, spray rate, pressure and motor frequency are all monitored and controlled automatically by the PLC system.

### Quality Inspection Before Packing

Prior to packaging, our quality team carried out a strict factory acceptance test. All rotating parts were run-in and verified for smooth operation. The heating system was tested to confirm the temperature rise speed and uniformity. The air supply circuit and liquid spraying circuit passed a complete leakage test to ensure there is no air leakage or liquid seepage. The two-fluid spray guns were atomization-tested to check the droplet fineness and spray coverage. The safety interlock and emergency stop functions were verified to ensure reliable operation under abnormal conditions. All electrical wiring was checked against the circuit diagram, and the earthing resistance was measured within the required range. Instrument calibration reports and the factory test report were issued together with the equipment.

### Packaging and Protection

The whole equipment is packed with export-standard fumigation-free wooden cases. The main fluidized bed host is fastened on a reinforced wooden base and protected with shrink film and foam padding. Stainless steel surfaces are covered with protective film to prevent scratching and oxidation during ocean transportation. Precision instruments such as two-fluid spray guns, pressure sensors, flow meters and temperature probes are wrapped separately in anti-static bags and placed in shockproof foam boxes. Loose fasteners, sealing gaskets, spare nozzles, lubrication grease and special maintenance tools are sorted and placed into labeled spare part boxes. Lifting marks, gravity center marks, moisture-proof marks, fragile marks and upward handling marks are printed on the outer surface of each wooden case. The packing list records every component with item number, quantity and specification for convenient unpacking and inventory.

### Shipping Documents

The complete set of shipping documents is provided together with the goods, including commercial invoice, detailed packing list, bill of lading, certificate of origin, stainless steel material certification, factory quality test report, operation manual and installation drawing. All documents are prepared in accordance with international trade and customs requirements to facilitate smooth customs declaration, clearance and import inspection at the destination port.

Changzhou Welldone Machinery Technology Co., Ltd
Website: www.vacuumdryingmachine.com
Address: Zhenglu Industrial Park, Tianning District, Changzhou, Jiangsu, China
Mobile / Whatsapp / Wechat: +86 15895071546
QQ: 619857675
Skype: superwangrun
E-mail: barney@welldone-technology.com
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