Fluidized bed granulator manufacturers take you to understand the influencing factors of fluidized bed granulator

Fluidized bed granulator manufacturers tell you that fluidized bed granulator is also called boiling granulation or one-step granulation. The material is put into a closed container at one time, and the material is uniformly mixed in the container, and then bonded by equipment. The agent is sprayed at a uniform speed, so that the binder and the material are fully mixed, flow in the container, form small particles, and send hot air through the bottom end to dry the wet particles, and finally collect the finished dry particles directly.

Fluidizing gas velocity
The size of the fluidization gas velocity directly affects the fluidization state of the bed. Fluidized bed granulator manufacturers tell you that when the fluidization gas velocity is too small and the bed temperature is too high, it is easy to cause "dry" instability. At this time, the heat brought by the fluidized bed granulator is not enough to evaporate the solvent in time, which will cause the bed "Wet" instability; and excessive gas velocity will increase wear and reduce the effect of granulation.
fluidized bed temperature
When other operating conditions are the same, if the bed temperature is low, the humidity in the bed is high, and the atomized droplets are easy to spread on the particle surface to form a larger solid-liquid contact area, so the particles are easy to collide and agglomerate, so the particle growth rate is fast. ; But too low bed temperature can easily lead to wet dead bed. On the contrary, when the bed temperature is high, the production capacity is high, the equipment utilization rate is high, and the heat transfer temperature difference and heat transfer efficiency of the fluidized bed are improved; but the excessive bed temperature will reduce the granulation efficiency, mainly because The atomized droplets are dried before they come into contact with the fluidized particles, and the dried dust is lifted out with the high-speed flowing gas.
Liquid flow rate
Fluidized bed granulator manufacturers tell you that when sufficient heat supply and fluidization are ensured, the greater the flow rate of the material, the faster the particle growth, and the particle size growth rate decreases with time.
initial particle size
The larger the initial particle size, the smaller the relative growth rate of the particles. It is generally believed that with the increase of the initial particle size, the dispersing force caused by collision wear and self-gravity increases, which reduces the success rate of agglomeration, and the layered mechanism grows. The proportion increases; Fluidized bed granulator manufacturers tell you that when the initial particle size is small, the particles are more likely to agglomerate, so the particle growth rate is larger.
binder
Fluidized bed granulator manufacturers tell you that generally speaking, the viscosity of the binder increases significantly with the increase of the concentration, the particles are easier to agglomerate, and the growth rate is accelerated.