Scene of high-concentration compound fertilizer chlorinated products floating on the surface
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Dear fellow sailors, I’ve recently noticed that the company’s products with formulas 15-15-15 and 20-8-12 tend to float. Has anyone encountered a similar issue? How was it resolved, and what is the cause of this problem? It could be due to equipment issues such as anti-dusting measures, raw materials, or the drying process.
It’s probably due to the anti-caking agent; the amount of this agent can be adjusted accordingly
The issue of powder accumulation has been checked; it has a slight impact on the product’s floating, but it is not the main cause.
It’s caused by oil; a layer of oil covers the outside of the particles, preventing water from penetrating inside, so the particles float
It has little to do with anti-caking agents; many fertilizers become suspended even without them. The main reasons are poor solubility of the fertilizer and too low density of its particles. There are various reasons for this phenomenon. Firstly, it is related to issues with the formula itself; secondly, ammonium phosphate contains many impurities and has poor water solubility; thirdly, excessively high temperatures during the production process lead to numerous side reactions. Fertilizers produced using traditional carbon ammoniate methods tend not to float, while those made using liquid ammonia or amino acid processes are more likely to float, especially those that use only liquid ammonia without acids. The floating phenomenon caused by problems with the fertilizer itself usually occurs after 1-2 hours of being in water, while floating resulting from an excessive amount of anti-caking agent occurs right after it is put into water. Ways to solve the floating problem: Try to increase the density of the fertilizer particles, for example by adding materials with high density, or reduce the porosity of the fertilizer particles ； Increase fertilizer solubility by using phosphoric ammonium salts that are easy to granulate and have good water solubility, while reducing the drying temperature.