A Comprehensive Comparison of Chemical and Physical Methods for NPK Compound Fertilizer Production
What are the Chemical and Physical Methods of NPK Production? Chemical NPK production refers to the process of converting basic raw materials into compound fertilizer through chemical reactions. Typical processes include the amino acid method, the nitrate-phosphate method, and the melt granulation method. Physical NPK production, on the other hand, refers to the process of combining different raw materials into granules solely through physical mixing and granulation, mainly including blending and extrusion granulation. The fundamental difference between the two is that the chemical method generates new compounds (such as ammonium phosphate and nitrate), while the chemical form of the raw materials remains unchanged in the physical method.
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