The fertilizer particles are not round, and the balling rate is low
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Organic fertilizer: 20% ammonium sulfate, 475% monoammonium phosphate, 9% boron, 50% protein powder, 166% nitrate, 210% potassium sulfate, 30% clay, 40% magnesium powder. Granulation is carried out using steam at 0.7 MPa and wash water in a drum; the resulting particles are small like pearl-shaped tangyuan for those produced under normal conditions, and larger like table tennis balls. By reducing the temperature and moisture level, 90% of the particles become as small as sesame seeds. No matter how the conditions are adjusted, particles between 2–4.5 mm in size account for no more than 30%, and these particles are not round or regular in shape, but rather irregular or angular in form. I earnestly ask some expert to kindly give me some guidance; otherwise, I really will have to surrender! Frustrated! :( :'( :'( :'(
It’s caused by an incorrect pH value. Some ingredients have not been used before, but they were the same originally. Let’s measure the pH value first.
Sorry, I typed the wrong word. It is the “principle”.
Thank you for the advice! I’ll go check it!
Is the normally controlled pH value 5.8–6.5? Hehe!
Your formula clearly has too much viscous material; adjust the material ratio and increase the amount of sulfuric acid AN used.
What was said upstairs makes a lot of sense: the amount of washing water should be moderate, the quantity of material should be stable, and adjustments should be done smoothly.
Ammonium sulfate: 20, monoammonium: 475, boron: 9, protein powder: 50, nitrate: 166, potassium sulfate: 210, clay: 30, magnesium powder: 40. It depends on your formula and the conditions under which the processing takes place; in my opinion, too much viscous material causes the small particles to stick together strongly, resulting in an uneven surface. The formation of larger particles is due to the excessive use of steam and washing water. I don’t think temperature plays a significant role in this. The small particles tend to form balls easily, so you can add some non-viscous materials with good fineness in order to adjust the processing conditions. 2. Those with corners and ridges are likely to be recycled products resulting from poor performance of the crusher; they are not necessarily produced as a result of granulation processes~~~ Additional information: I. The reasons for irregular shapes, insufficient smoothness, and low strength of fertilizer particles include 1) irregular particle sizes of the material returned after crushing, and the particles resulting from crushing are similar in size to the finished particles, so they cannot be separated and end up mixed in with the finished product. -----Solution: Modify the grinder so that its crushing action can break down large particles into powder. This will eliminate irregularities and improve smoothness; an increased fineness of the recycled material can also help address strength issues. 2. There is a problem with the formula; the drying pressure is too high, resulting in poor drying efficiency. Upon reaching the drying cylinder, the high moisture content causes the material to be flattened due to the action of the turning plates, leading to irregular shapes. If this issue occurs during the system’s circulation process, it could be due to two reasons: poor crushing performance by the crusher or excessive moisture content. Poor fineness of the raw materials results in insufficient smoothness and inadequate compressive strength. ---Solution: Try to use raw materials with high fineness, or use a grinder when adding ingredients~