Reasons for urea caking
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This post was last edited by lxq700918 on 2010-9-9 22:19. Recently, our factory has noticed that the urea inside the finished bags has become hard; we initially suspect that this is due to humid weather. Are there any other reasons? If you know, please let me know
It’s probably urea that has caked together. High moisture content in urea, excessive dust, and high packaging temperatures can all lead to caking, with the problem being most severe in summer.
Reply to 2# htcfkq: How to resolve this phenomenon?
Urea’s hygroscopic nature, high dust levels, and high packaging temperatures can all lead to caking, with the problem being most severe in summer. It is best to use a urea cooling fluidized bed, as this can address the dust issue, reduce the packaging temperature, and eliminate any ammonia odor present. For details, please contact 13505742491
Reply to 4# WHSMZ: Please introduce me to the urea fluidized bed
As the people above have said, high moisture content, excessive dust, and high packaging temperature in urea can all easily lead to caking. However, it is recommended that the poster conduct necessary checks such as analyzing the water content of the finished product and checking whether there is a lot of dust in the packaging bag, before taking appropriate actions.
Reply 1# canglang: Clumping must be due to too much moisture, or perhaps there’s too much urea powder
Reply to 5# canglang: Working principle: This device utilizes aerodynamic principles; through the combined action of a blower and an exhaust fan, it causes urea to boil vigorously in the fluidized bed, resulting in rapid cooling； At the same time, the dust contained within is continuously drawn into a dust collector for separation, thereby achieving the purpose of cooling, removing dust, and eliminating ammonia odors from the finished urea, while also effectively improving the working environment in the packaging area.
It’s caused by a high moisture content in the urea; it must have absorbed moisture. A sample will be taken to analyze its moisture content.
Reply 1# canglang: The clumping in urea bags is mainly due to excessive moisture, but it is also caused by high particle temperatures. At high temperatures, the equilibrium vapor pressure of water on the particle surface is high; when the temperature drops, this equilibrium vapor pressure decreases, leading to condensation. Coupled with the hygroscopic nature of urea, this makes it easy for clumps to form within the bags
Reply 1# canglang: Recrystallization due to high moisture content