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Fertilizer Agglomeration Mechanism II

2019-05-31

(3) Chemical reaction theory
The theory holds that chemical fertilizers are less likely to react completely during the granulation process, but will continue to react to form double salts during storage, leading to recrystallization and agglomeration. These reactions are accompanied by exothermic and release of water, which causes a change in the composition of the double salt, resulting in a change in the volume of the particles, resulting in cracking and agglomeration of the product.
Through the study of agglomeration of high-concentration compound fertilizer, the theory of plastic deformation is formed.
(4) Plastic deformation theory
According to this theory, agglomeration is accompanied by deformation, and compression will increase the deformation. The residual heat of the fertilizer that is not completely cooled will be transferred outward from the center of the particle. If the fertilizer particles are squeezed, deformation and agglomeration will result.
(5) Diffusion agglomeration theory
The above mechanism is relatively mature, but some scholars in the former Soviet Union proposed a completely different agglomeration theory - the mechanism of diffusion agglomeration. The mechanism of diffusion agglomeration is considered to be that the agglomeration of the inorganic compound depends on the shape of the particle or the pore structure formed by the accumulation of the particles. Ions of inorganic substances self-diffuse through these channels and some physical or chemical action occurs on the surface of the particles to form agglomeration.

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