High-nitrogen compound fertilizer anticaking agent, preparation and use thereof

Abstract

The invention relates to a high nitrogen compound fertilizer, in particular to an anticaking agent of the high nitrogen compound fertilizer and preparation and application thereof; the component of the anticaking agent includes olefin, alkylamine, S-80 and mineral oil; the weight ratios of the olefin, the alkylamine, the S-80 and the mineral oil are 18 to 25 : 3.7 to 10 : 3 to 4 : 75 to 61. A dewatering nonpolarity material and a cation surface active agent are adopted to be combined on the aspects of anti-moisture absorption and crystal bridge forming by the invention which not only utilizes the olefin to seal the surface of the fertilizer to prevent the water inside the fertilizer from leaking outside to cause the crystal bridge to be formed, but also restrains the adhesion of external vapor; the cation surface active agent is utilized on the aspect of controlling the moisture absorption of the fertilizer, which can improve the adhesive attraction of the anticaking agent, promote the extension of the anticaking agent on the surface of fertilizer particles when coating and improves the tractility for one aspect; for the other aspect, a dewatering base can prevent the external vapor from entering.

Description

technical field [0001] The present invention relates to high-nitrogen compound fertilizer, which is a technique for preventing compound fertilizer with high nitrogen content from agglomerating due to moisture absorption. Specifically, it is an anti-caking agent for high-nitrogen compound fertilizer and its preparation and application. Anti-caking treatment in the production of compound fertilizers with strong hygroscopicity and high nitrogen content. Background technique [0002] With the development of the chemical fertilizer industry, the research on the corresponding supporting technologies is also deepening. With the development of compound fertilizers, there are more and more varieties, which also lead to a series of problems. The introduction of high-nitrogen compound fertilizers has emerged. The problems of difficult moisture absorption and serious fertilizer caking, especially after the introduction of urea melt-spray granulation and high-tower melt granulation techn...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the caking problem of high-nitrogen compound fertilizers, especially high-tower melt granulation fertilizers, the invention provides an anti-caking agent for high-nitrogen compound fertilizers and its preparation and application. Combining hydrophobic and non-polar materials with cationic surfactants, that is, using paraffin to seal the surface of fertilizers, preventing the formation of crystal bridges caused by the infiltration of moisture inside the fertilizers, and also limiting the attachment of external water vapor, using cationic surfactants to control the moisture absorption of fertilizers On the one hand, it can improve the adhesion of the anti-caking agent, promote the extension of the anti-caking agent on the surface of the fertilizer particles, and improve the ductility; on the other hand, the hydrophobic base can prevent the entry of external water vapor