The core value of bio-organic fertilizer lies in preserving the activity of beneficial microorganisms. As the central piece of drying equipment, the drum fertilizer dryer's operational protocols directly determine the quality of the finished product. When utilizing this equipment, particular attention must be paid to the following points to prevent nutrient loss and ensure the finished product meets quality standards.

First and foremost, precise temperature control is critical. Since the beneficial microorganisms within bio-organic fertilizer are sensitive to heat, the temperature inside the drum fertilizer dryer must be strictly maintained within the range of 60–80°C. This prevents high temperatures from causing microbial inactivation while ensuring uniform heat distribution, thereby balancing effective dehydration with the preservation of microbial activity.

Secondly, ensure uniform feeding to prevent the accumulation of wet material. Inconsistent raw material moisture levels—or feeding too quickly or in excessive quantities—can result in incomplete drying and susceptibility to mold growth. Conversely, feeding too slowly increases energy consumption. Therefore, material should be fed at a steady rate—calibrated to the equipment's processing capacity—to guarantee uniform drying.

Furthermore, it is essential to properly synchronize airflow speed and drum rotation speed to prevent excessive material abrasion. Bio-organic fertilizer granules are fragile; improper parameter settings can easily lead to granule fragmentation and nutrient loss, necessitating careful and rational parameter adjustments. Following the drying process, the material must be promptly transferred to a cooling stage to prevent residual heat from damaging the beneficial microorganisms.

In summary, when utilizing a drum fertilizer dryer for bio-organic fertilizer production, the core principles are precise temperature control, steady-state operation, and loss prevention. By adhering to these guidelines, it is possible to effectively dehydrate the material while simultaneously preserving the activity of beneficial microorganisms, thereby guaranteeing the superior quality of the finished product.