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Wet granulation technology and device
2019-12-21
In solid powder-based dispersions where coexisting powders and liquids coexist, the dispersed self-adhesiveness (or external binder) is used to enforce the method (such as agent pressure, gravity, centrifugal force, mechanical force, air force, etc.) ) Make the basic particles of solid powder adhere to each other and increase, and form a group of particles with a uniform shape and granularity.
Wet granulation equipment is mainly composed of mixing (kneading), granulation, drying and its auxiliary system equipment. After the powder is mixed (kneaded), it enters the fertilizer granulator machine to form a wet product with the required particle size. After drying, the granulated product is obtained to achieve the purpose of granulation. The twin-screw extrusion granulator is divided into front discharge type and side discharge type. The diameter of the front discharge type granules is generally selected between 1.5 ~ 12mm, and the diameter of the side discharge type granules is generally between 0.7 ~ 2.0mm. The granule shape is cylindrical, and the granulation rate is ≥95%. The single screw extruder granulator has certain mixing and kneading functions, which can effectively prevent the material from "holding the rod", especially suitable for the extrusion of thixotropic materials. Bar and granulation production.
The diameter of the granulated product is generally selected between 1.5 ~ 12mm. The shape of the granule is cylindrical, and the granulation rate is ≥95%. The roller rolling granulator is a volumetric discontinuous continuous compression extrusion granulation, which has a wider application range. The particles have higher strength and uniform length. The diameter of the granulated product is generally selected between 2.0 ~ 8.0mm. The shape of the pellet is ball-point pen shape, and the granulation rate is ≥95%. The high-speed granulator uses the high-speed rotating mechanical mixing force and the aerodynamic force to continuously enter the machine. The fine powder material is in full contact with the droplets of the binding agent (usually water) continuously sprayed into the machine, and the processes of mixing, granulation, spheroidization and densification are continuously realized, so as to achieve the purpose of granulation.
The shape of the granulated product is spherical, so as to achieve the purpose of granulation. The shape of the granulated product is spherical, the sphericity is ≥0.7, the particle size is generally between 0.3 ~ 0.4mm, and the granulation rate is ≥80%. According to the material properties, granulation requirements and fertilizer manufacturing process, the type of granulator and its granulation process configuration plan are specifically selected.
Wet granulation equipment is mainly composed of mixing (kneading), granulation, drying and its auxiliary system equipment. After the powder is mixed (kneaded), it enters the fertilizer granulator machine to form a wet product with the required particle size. After drying, the granulated product is obtained to achieve the purpose of granulation. The twin-screw extrusion granulator is divided into front discharge type and side discharge type. The diameter of the front discharge type granules is generally selected between 1.5 ~ 12mm, and the diameter of the side discharge type granules is generally between 0.7 ~ 2.0mm. The granule shape is cylindrical, and the granulation rate is ≥95%. The single screw extruder granulator has certain mixing and kneading functions, which can effectively prevent the material from "holding the rod", especially suitable for the extrusion of thixotropic materials. Bar and granulation production.
The diameter of the granulated product is generally selected between 1.5 ~ 12mm. The shape of the granule is cylindrical, and the granulation rate is ≥95%. The roller rolling granulator is a volumetric discontinuous continuous compression extrusion granulation, which has a wider application range. The particles have higher strength and uniform length. The diameter of the granulated product is generally selected between 2.0 ~ 8.0mm. The shape of the pellet is ball-point pen shape, and the granulation rate is ≥95%. The high-speed granulator uses the high-speed rotating mechanical mixing force and the aerodynamic force to continuously enter the machine. The fine powder material is in full contact with the droplets of the binding agent (usually water) continuously sprayed into the machine, and the processes of mixing, granulation, spheroidization and densification are continuously realized, so as to achieve the purpose of granulation.
The shape of the granulated product is spherical, so as to achieve the purpose of granulation. The shape of the granulated product is spherical, the sphericity is ≥0.7, the particle size is generally between 0.3 ~ 0.4mm, and the granulation rate is ≥80%. According to the material properties, granulation requirements and fertilizer manufacturing process, the type of granulator and its granulation process configuration plan are specifically selected.