Reasons for agglomeration of compound fertilizer The main raw materials for compound (mixed) fertilizer production in China are: urea, ammonium chloride, ammonium nitrate, ammonium sulfate, diammonium phosphate, monoammonium phosphate, superphosphate, heavy calcium, potassium chloride, potassium sulfate, etc. These fertilizers have Due to the large solubility, complex (mixed) fertilizers made from them tend to agglomerate during storage and transportation. Factors that affect the agglomeration of compound fertilizers are mainly manifested in the following aspects: (1) Product Moisture Content The higher the moisture, the salt dissolves between the particles - the easier the crystallization process proceeds, and the easier it is to agglomerate. (2) Packing temperature The packaging temperature is high, the internal moisture of the product can not be fully released, and it is easy to agglomerate; the product has a low temperature, easily absorbs moisture from the air, and is also easy to agglomerate. (3) Storage pressure Fertilizer granules Under heavy pressure, the particles are in contact with each other more closely, the particles are deformed, and the contact surface is increased, thereby causing agglomeration. (4) Storage time Fertilizer products will continue to undergo certain reactions during the period of time after packaging, such as moisture absorption, dissolution, recrystallization, and metathesis between salts. This process lasts for a long time, so the longer the storage time The more serious the agglomeration is. (5) The shape of the granules is small in size and irregular in shape, multi-angular, and has a large specific surface area and is more likely to agglomerate. (6) Uniformity and hardness of the particles When the particles are not uniform, the contact area increases; if the hardness is low, the particles are easily crushed, resulting in increased contact area and easy agglomeration. (7) The composition of the impurities in the particles and the composition of the impurities in the particles will affect the degree of crystallinity of the salts and the size of the crystal particles, thereby affecting the degree of agglomeration. Urea-monoammonium phosphate-potassium chloride composite (mixed) fertilizer anti-caking method (1) The addition of an appropriate amount of formaldehyde to formaldehyde and urea to react with dimethyldiurea will not only slow the caking, but also make the urea slower, thus improving the fertilizer utilization rate. (2) In urea (or in urine), gypsum powdered gypsum (caso42h2o) is reacted with urea to form a stable complex salt, cosa44co (nh2), which slows down the formation of double salts of urea and other substances. (3) Prolonged cooling time Insufficient cooling will cause the internal moisture of the particles to transfer to the surface, leading to the dissolution and crystallization of surface salts. In urea-based compound (mixed) fertilizers, as the temperature decreases, the rate of re-salting increases, leading to agglomeration. (4) Increase the number of turn-turns or build a random storehouse Due to the slow response of compound (mixed) fertilizers, it is appropriate to turn over during storage (similar to the principle of building a bulk warehouse). At the initial stage of storage, the degree of agglomeration is not very serious. Once it is turned over, the agglomeration will be loose, thereby prolonging the storage period. D-Sodium Erythorbate,D-Sodium Erythorbate Food Grade,D-Sodium Erythorbate Powder,Food Additives D-Sodium Erythorbate SHANDONG BAISHENG BIOTECHNOLOGY COM , https://www.baishengbioproducts.com