Review on the physical stability of suspended fertilizer systems
Suspended fertilizer is an important raw material in the application of water and fertilizer integration technology.Its high concentration and flexible and adjustable formulation show great potential in modern agricultural development.However,the characteristics of high nutrient composition also lead to the crystallization,stratification,sedimentation and other instability problems in the process of storage,transportation and application process,which restricts the development and application of suspended fertilizer to a greater extent.The mechanism,selection of auxiliaries and process optimization of suspension fertilizer stability were reviewed in this paper.The instability mechanism was mainly proposed from the aspects of Austenitic ripening,Van der Waals'force and gravitational effects.The factors affecting stability included the particle size of suspended particles and the viscosity of the suspension system,electrostatic repulsion,steric hindrance,solvation and so on.Suspension of fertilizer system composition was complex,the optimization of system stability needed to be effectively linked with the mechanism of research,the future stability of suspension of fertilizer research should be effectively guided by the mechanism of research,targeted additives and the improved process in order to find an effective way.This review could provide theoretical basis and method for the optimization of storage process of suspension fertilizer production.
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