Seeking advice on granulation and drying of compound fertilizers
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This post was last edited by Yan Qiusheng on 2011-6-13 at 17:23. Two tons of samples (25-8-12) were produced using traditional disc granulation equipment. The raw materials included urea (ground), diammonium phosphate, potassium chloride, and fillers. Drying has now become a problem – the amount of urea is a bit high; after being processed, the material enters the drying drum, but the fan isn’t powerful enough, resulting in the material sticking together in clumps. I’m wondering if drying it in the sun could work Can it achieve the required strength? Are there any other ways? Thank you all, bosses
The price of diammonium is high; why not use monammonium? The moisture content in urea is too high – adjust the moisture level and raise the temperature of the urea. Hot air should be used, not ordinary air； First increase the temperature of the drying cylinder before feeding; it is absolutely forbidden to feed first and then introduce air.
It’s better to use an exhaust fan; drying it in the air won’t work.
Reply to 1# Economic Novice: How much space do you have for drying things? Also, I’m not sure whether your workplace is in the north or the south Relying on the weather for a living won’t work.