Fertilizer Horizontal Mixing Machine Production Quality Testing Methods

 The fertilizer horizontal mixing machine, as a key mixing equipment in organic and compound fertilizer produciton line, directly determines the uniformity of fertilizer nutrients.  Testing should focus on three core dimensions: mixing uniformity, equipment operational stability, and material adaptability, to ensure it meets the needs of large-scale production.

Mixing uniformity is the core testing indicator and can be tested using the "tracer method": a quantitative amount of an easily detectable tracer such as potassium sulfate is added to the raw materials in proportion. After mixing for a set time, samples are taken from three positions (front, middle, and back) at the mixer's discharge port. The tracer content in each sample is determined through chemical analysis, and the coefficient of variation is calculated. A coefficient of variation ≤5% is considered acceptable. If it exceeds the standard, the mixing paddle speed needs to be adjusted or the mixing time extended.

Operational stability testing of the horizontal fertilizer mixer requires continuous operation under full load conditions for 2 hours.  Observe whether the gap between the mixing paddles and the cylinder is reasonable, and ensure there are no jamming or abnormal noises.  Simultaneously, the main shaft speed deviation should be measured and controlled within ±2%, and the bearing temperature rise should not exceed 30℃, to avoid production interruptions due to mechanical failure.

Material adaptability testing requires simulating different raw material characteristics, testing the mixing effect of powdery, granular, and organic-inorganic mixed raw materials.  The requirement is that after mixing, there should be no stratification or clumping of any type of material, and the residual rate in the cylinder after discharge should be ≤1%. In addition, the equipment's sealing performance needs to be checked to ensure no dust leakage during operation, meeting environmental protection production standards.



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