In the production of organic fertilizers, if the rotational speed of a organic fertilizer double axis mixer is too low, it directly compromises mixing quality, production efficiency, and the operational stability of the fertilizer making machine, leading to a series of adverse effects. When the speed is insufficient, the thrusting, shearing, and tumbling forces exerted by the mixing shafts and paddles on the materials are weakened. Consequently, the materials fail to establish adequate convective circulation within the machine, often resulting in localized accumulation and distinct stratification. This leads to uneven mixing of organic fertilizer raw materials—such as straw, manure, microbial agents, and trace elements—thereby directly diminishing the uniformity and nutrient stability of the finished fertilizer product.

Under low-speed operation, material flowability is poor, making it prone to settling at the bottom of the mixing chamber and creating significant "dead zones" where mixing does not occur. Furthermore, wet and viscous materials exacerbate issues such as wall adhesion and clumping; this not only impairs the effectiveness of the pretreatment stage but also increases the difficulty of subsequent cleaning operations. Simultaneously, the required mixing time for materials is prolonged, reducing the processing efficiency per batch. This slows down the discharge rate of the entire production line, making it difficult to achieve designed output targets, and indirectly drives up energy consumption and labor costs.

Additionally, operating at an excessively low speed subjects the motor and reducer to a state of improper loading over extended periods, often leading to operational issues such as difficulty in starting up and sluggish performance. The accumulated material exerts continuous pressure on the paddles and shafts, accelerating wear on the mixing shafts, blades, and bearings. In severe cases, this can trigger mechanical failures—such as motor stalling or jamming—resulting in equipment downtime and disrupting continuous production. Moreover, insufficient mixing can lead to uneven initial fermentation of the organic fertilizer, causing localized temperature fluctuations (rising too quickly or too slowly), which ultimately reduces the degree of maturation and compromises the quality and efficacy of the final product. Therefore, maintaining proper control over the rotational speed of the dual-shaft mixer is a critical factor in ensuring the stable and efficient production of organic fertilizers.