Compound fertilizer is a fertilizer containing two or three nutrients of N and P; compound fertilizer is available in powder or granular form. It is usually used as top dressing, but also as base fertilizer and seed fertilizer. The complete npk production line produced by our company includes: belt scale, disc mixer, drum granulator, rotary drum granulator, drum cooler, drum coating machine, chain crusher, rotary screening machine, automatic packaging machine , belt conveyor and other accessories, the compound fertilizer production line is divided into 20,000 tons, 30,000 tons, and 50,000 tons according to production capacity. With years of experience in manufacturing compound fertilizer equipment, we can also assemble fertilizer production lines with greater output according to customer needs.
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This compound fertilizer production line is mainly used for granulation of compound fertilizer particles using NPK, GSSP, SSP, granular potassium sulfate, sulfuric acid, ammonium nitrate, etc. as raw materials. Compound fertilizer equipment has the characteristics of stable operation. If we want to obtain npk granules, we know that we must use npk compound fertilizer granulation equipment. But do you know the working principle of the double roller granulator? The following is the process of npk fertilizer granulation.
• Firstly, with the help of the conveyor belt, the mixed material can be sent to the npk fertilizer double roller granulator, and the powdery material is input from the top of the machine.
•Then press the powdered NPK fertilizer between the two lower rollers for extrusion, and the rollers rotate relative to each other. Under strong extrusion pressure, cake-like materials can be obtained.
• Next, the cake-like material can be sent to the crushing chamber and crushed by the crushing shaft.
• Finally, the crushed material will be screened through the screen under the crushing chamber. Qualified particles are transported to the outside through the conveyor belt. The sieved powder is sent back to the raw material warehouse for secondary production.