NPK particle production process

Phosphoric acid can be produced by decomposing phosphate rock with sulfuric acid and directly purchasing commercial phosphoric acid when conditions permit, so as to reduce investment and simplify npk fertilizer manufacturing process. The advantage of this method is that it can produce not only ammonium phosphate but also npk fertilizer. At the same time, it can make full use of the neutralization heat of acid and ammonia to evaporate the material water, reduce the granulation water content and drying load, and reduce the energy consumption.
This process is generally used by large-scale production of fertilizer companies or NPK fertilizer companies.
In industry, NPK fertilizer is made of single basic fertilizer such as urea, ammonium nitrate, ammonium chloride, ammonium sulfate, monoammonium phosphate, diammonium phosphate, bicalcium, superphosphate, potassium chloride, potassium sulfate, etc. after being crushed to a certain fineness, the material is agglomerated and granulated in the rotary drum granulator or disk granulator through humidification and heating.

In the fertilizer production process, if possible, a small amount of phosphoric acid and ammonia can be added to the drum granulator to improve the granulation conditions. NPK compound fertilizer products are obtained by drying, screening and cooling the granulated materials. This process has a wide range of sources, simple processing process, less investment, low production cost, large production flexibility, and almost no problem of welcome pollution.