T/CCEMA 0001-2020 The particle size and shape of granular potassium fertilizer

Scope

Scope: This standard specifies the terms and definitions of the granularity and shape of potassium fertilizers, quality requirements, test methods, and result evaluation. This standard applies to granular potassium chloride, granular potassium sulfate, granular potassium nitrate, granular potassium magnesium sulfate, and other granular potassium fertilizer products produced by a certain granulation process for use in compound fertilizer formulations or direct application in agriculture. Main technical content: In the granular system, the shape and morphology of particles play an important role, so these characteristics should be quantitatively characterized and described. The shape of a particle is the envelope surface formed by all points on its surface. Particle shape (Shape) is the envelope surface formed by all points on its surface. Particle morphology (morphology) is an extension of this simple shape description to more complex descriptions (such as porosity, roughness, and texture characteristics). Particle morphology (particle shape) is the general term for the shape and morphology of particles. The widespread application of image analysis technology has provided standard methods for measuring characteristics such as particle size, geometric shape, and morphology. This standard lists the basic parameters of granularity and particle shape most closely related to the properties of granular potassium fertilizers, but the parameters listed in 4.2 are not the only ones that can characterize the properties of fertilizer particles. The granularity and particle shape parameters in Table A.2 can all reflect certain properties of fertilizer particles.

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