What are the key factors to consider when purchasing fertilizer granulation equipment? One is whether the manufacturer is legitimate, product quality, after-sales service, ball forming rate, etc. The following factors are provided for your reference.

Fertilizer granulation equipment is a machine that turns powdered raw materials into granular organic fertilizers, and is a key part of the organic fertilizer production line. In order to save costs, enterprises should choose suitable granulation equipment. Therefore, before purchasing a suitable fertilizer granulator, it is important to do your homework. When choosing a granulator, consideration should be given to the raw materials, moisture content of the materials, shape and size of the particles, and other issues.

1. Selection of dry/wet methods. The dry production process will inevitably lead to dust generation, making it unsuitable for granulation of toxic or other hazardous powders. On the other hand, the wet method requires drying after granulation and wastes some solvents. Some drugs cannot come into contact with water or crystallize to form other structures during the drying process, which is not suitable for wet methods.

2. Product particle size distribution. The particle size of products obtained by different granulation methods varies greatly. For example, the particle size of spray granulation is small, while the particle size of compression granulation products can be very large. The granulation method should be selected according to the required granulation.

3. Characteristics of raw materials. The selection of raw material characteristics requires examining whether the powder has sufficient fineness to ensure the rolling granulation process; If extrusion granulation is chosen, is the plasticity of the raw materials after kneading with water sufficient; Is it easy to atomize the slurry product produced by wet grinding or liquid-phase synthesis; If spray granulation is used, what is the thermal sensitivity of the raw materials.

4. Requirements for logical ability. The unit time processing capacity of different granulation methods varies greatly, considering equipment investment and processing costs.

5. Particle shape of the product. The products obtained by methods such as stirring, mixing, granulation, and fluidized granulation are irregularly shaped spherical particles; Rolling into a ball can obtain a smooth spherical body; For the preparation of regular particles with special shapes, compression and extrusion granulation methods are required. The selection of product particle formation should consider the requirements and convenience of subsequent processes.

6. Particle strength. Under conditions where particle strength is not required or where high strength is not desired (such as instant food), the method of early separation by spraying can be chosen; If high particle strength is required, it is necessary to use compression granulation, add binders, or even sinter after molding, such as in the production of grinding media particles.

7. The porosity and density of particles also directly affect the strength of the product in these two indicators. For example, in the production of catalyst support particles, the simultaneous improvement of porosity and strength is a contradiction. The size of porosity and density can be adjusted through process operating parameters.