Compared with single fertilizer, compound fertilizer has abundant nutrients, can meet the needs of agricultural production, and its price is low. The nutrient release rate of granular compound fertilizer is consistent with the demand of crop growth. The application of slow-release compound fertilizer can not only reduce the loss of fertilizer nutrients and improve the nutrient utilization rate, but also optimize the soil environment. The effect of increasing crop yield and income is remarkable.
A NPK compound fertilizer production line can complete the industrial processing of compound fertilizer. The NPK compound fertilizer production line has the advantages of simple process, convenient operation, high yield and low cost. Ingredients and granulation technology have great influence on the quality of compound fertilizer in the production of compound fertilizer. The decomposition temperature of urea in compound fertilizer is low and its solubility is high. It is very sensitive to water and temperature. Rotary drum granulator is a commonly used fertilizer granulation machine in NPK compound fertilizer production line. Compared with other fertilizer granulator, it has the advantages of large output, low energy consumption and good granulation effect. Rotary drum granulator plays an important role in compound fertilizer production and promotes the production of compound fertilizer equipment. Improving the granulation rate of drum granulator is conducive to improving the efficiency of the whole NPK compound fertilizer production line, so how to improve the granulation rate of drum granulator? Here we mainly introduce the matters needing attention when batching compound fertilizer.
The pretreated material is accurately prepared according to the proportion of compound fertilizer (the amount of urea in compound fertilizer is not more than 15%) and the raw material is added into the hopper of the mixer. If the moisture content of the material exceeds 8%, appropriate amount of calcium, magnesium and phosphorus fertilizer should be added to improve the operation of the latter fertilizer production line. The optimum dosage of calcium, magnesium and phosphorus fertilizer is not more than 10 kg per ton, usually 5 kg per bushel. The mixer mixes and stirs the matched materials to make the materials fully blended.