Preparation method of moisture resistant urea specially used for mixed fertilizer

摘要

The invention relates to a method for preparing a moisture resistant urea specially used for a mixed fertilizer.The utility model is characterized in that: the granular urea is added to the front end of the coating drum, the disc with the mixing function or the mixer, and the granular urea is sprayed with a special humidity resistant agent layer;By spraying granular urea and modified magnesium oxide powder layer on the back end of the coating roller, disk or mixer with mixing function, a moisture resistant urea can be obtained, especially for mixed fertilizer. The urea prepared by the method can be stably mixed with acid fertilizer such as superphosphate without moisture absorption.Damp or gathered