What equipment does a fertilizer production line generally consist of?

The fertilizer production line is a complete set of continuous processing equipment. According to the type of raw materials and finished products, it is divided into two categories: organic fertilizer production line and compound fertilizer production line. The equipment configuration is slightly different, but the core sections are basically the same. Huaqiang Heavy Industry has been engaged in the research and development and manufacturing of complete sets of fertilizer equipment for many years, and can provide customers with modular production line solutions. The complete production line includes unit equipment such as pretreatment, granulation, drying, cooling, screening, coating, and packaging to jointly complete the processing from raw materials to finished fertilizers.

Raw material pretreatment is the first step in the production line. The main equipment includes fermentation compost turners, crushers, screening machines and batching mixers. Organic raw materials such as livestock and poultry manure, straw, sludge, etc. are first completed aerobic fermentation and decomposition through the compost turner to kill insect eggs and harmful bacteria; the fermented large pieces of material are sent to the crusher for crushing, and the materials are processed into fine powder to ensure the subsequent granulation effect. The batching system accurately proportions organic matter, nitrogen, phosphorus and potassium auxiliary materials according to the formula proportion, and the mixer fully mixes the materials to ensure uniform nutrition.

The granulation section is the core of fertilizer molding. Commonly used equipment include disc granulator, rotary drum granulator, and double roller extrusion granulator. Disc and drum granulation is a wet granulation method. It adds an appropriate amount of water and relies on rolling action to agglomerate the powder into particles. The particles are round and beautiful, and are mostly used for organic fertilizers and compound fertilizers. Roller extrusion granulation is a dry granulation method that does not require the addition of water and relies on roller pressure for extrusion. It is suitable for the production of high-concentration compound fertilizers. The finished product has high strength and is not easy to loosen. The selection of granulation equipment should be determined based on the characteristics of raw materials, production capacity and fertilizer formula.

The granulated granules contain high moisture and require drying and cooling equipment. The drum dryer uses hot air to reduce the moisture content of the particles to prevent agglomeration during storage; it is then equipped with a drum cooler to quickly reduce the temperature of the particles and increase the hardness of the particles. The drying and cooling process directly affects the stability of the finished product, and the temperature and air volume need to be strictly controlled to avoid particle cracking.

The particles are screened by a grading screening machine to separate qualified particles, fine powder and large clumps. Qualified particles are fed into the coating machine, and anti-caking agents are sprayed to form a protective film on the surface of the particles, reducing fertilizer accumulation and clumping, and improving product appearance and storage life. Unqualified bulk materials will be re-crushed, and the fine powder will be returned to the granulation process for secondary processing to improve raw material utilization.

At the end of the production line is an automatic quantitative packaging machine, which completes the weighing and sealing of finished fertilizers to facilitate storage and transportation. The entire production line is also equipped with auxiliary equipment such as belt conveyors and dust collectors to realize material transportation and dust collection and improve the workshop production environment.

Huaqiang Heavy Industry's fertilizer production line equipment can be flexibly combined, small production lines can streamline some equipment, and large industrial production lines are equipped with automated control systems. Reasonable matching of equipment can not only stabilize the quality of fertilizers, but also improve production efficiency, reduce production energy consumption, and meet the large-scale production needs of different types of organic fertilizers and compound fertilizers.