In the field of pesticide formulation processing, pesticide granulators play a crucial role. It can process powdered pesticide raw materials and related excipients into granules for easy storage, transportation, and use. In this process, the amount of adhesive added and the control of mixing uniformity are key factors determining product quality.

1、 Accurate determination of adhesive dosage

1. Considering material characteristics: Different pesticide raw materials and excipients have different properties, such as particle size, specific surface area, water absorption, etc. For materials with small particle size and large specific surface area, a relatively large amount of adhesive is often required to ensure particle formation and strength. For example, some ultrafine herbicide raw material powders, due to their large specific surface area, can adsorb more water, so it is necessary to increase the amount of binder appropriately to overcome this adsorption effect and enable effective bonding between particles. For materials with strong water absorption, additional adhesive should also be considered to avoid poor bonding due to excessive absorption of moisture.

2. Reference target particle requirements: If it is expected to produce particles with high hardness and wear resistance to meet the requirements of long-distance transportation and multiple handling processes that are not easily broken, the amount of adhesive added will usually be correspondingly increased. On the contrary, if there are high requirements for the disintegration of particles, such as water dispersible granules used for rapid release of active ingredients, the amount of adhesive used should be carefully controlled to prevent excessive impact on the disintegration speed of particles in water. Generally speaking, by conducting preliminary experiments and simulating various performance indicators of particles with different addition amounts, a roughly suitable range can be determined.

3. Combined with production process adjustment: Different granulation processes can also affect the amount of adhesive added. For example, when using wet granulation, due to the involvement of liquid, the adhesive can be more fully dispersed and in contact with the material, which may require slightly less amount compared to dry granulation. At the same time, the parameter settings of the equipment, such as the speed of the stirring blade and the spraying rate, can also affect the actual use effect of the adhesive, and the amount of addition needs to be determined by comprehensive weighing in actual operation.

2、 Effective control of mixing uniformity

1. OptimizationPesticide GranulatorStructure and parameters: Modern equipment is usually equipped with mixing systems, and the shape, layout, and speed of the mixing blades are important factors that affect the uniformity of mixing. Reasonably design the blade shape to create a good material circulation flow inside the container, avoiding dead corners or local accumulation. And according to the characteristics of the material and the batch size, the stirring speed should be set to ensure that the material can be fully stirred and mixed throughout the entire mixing process. In addition, some granulators also have frequency conversion speed regulation function, which can flexibly adjust the speed according to different stages, further improving the uniformity of mixing.

2. Standardized operating procedures: It is crucial to strictly follow the established operating procedures when adding materials and adhesives to the granulator. Part of the basic materials should be put into the machine first, and after starting the mixing process, the adhesive should be slowly and uniformly added to ensure that the adhesive gradually spreads throughout the entire material system, rather than being concentrated in one place and causing local over concentration. At the same time, the order and speed of feeding should be consistent, and the starting conditions for each production should be as similar as possible to help maintain stable mixing uniformity.

3. Real time monitoring and feedback adjustment: Use online detection technology or regular sampling and testing methods to monitor the mixing process. For example, real-time monitoring of particle size distribution can be achieved through a laser particle size analyzer. Once significant differences in particle size are detected in a certain batch, it may indicate the possibility of uneven mixing, and the machine can be shut down in a timely manner to investigate the cause and make corresponding adjustments, such as extending the mixing time, checking for component failures that affect the mixing effect, etc.

In summary, in the production process of pesticide granulators, precise control of the amount of adhesive added and strict guarantee of mixing uniformity are key links to improving product quality and meeting the diversified needs of agricultural production. Production enterprises need to continuously explore and improve relevant technologies and management measures.