The mixer should make the additive premix from micro mixing - small mixing - medium mixing - large mixing, and gradually expand the mixing method.
The correct order of adding materials to the mixer should be: first add the component with a large proportion or most of it into the machine, and then add a small amount and trace components on top of it; among various materials, generally those with large particle sizes The components are added to the mixer first, and then the materials with smaller particle sizes are added; when the specific gravity difference between the materials is relatively large, the materials with small specific gravity are generally added first, and then the materials with larger specific gravity are added.
For fixed container mixers, the mixer should be started first and then the materials are added, so that the phenomenon of starting at full load does not occur, and the materials must be unloaded before stopping; while the rotating container mixer should be added first and then started, and then stopped first, and then Unloading; for V-shaped mixers, materials should be fed from two feed ports when feeding.
The mixing of liquids mainly relies on mechanical stirrers, airflow and jets of the liquid to be mixed to stir the materials to be mixed to achieve uniform mixing. Stirring causes part of the liquid to flow, and the flowing liquid pushes the liquid around it. As a result, a circulating liquid flow is formed in the container. The resulting diffusion between liquids can be called the diffusion of main convection. When the agitation causes the liquid flow velocity to be very high, shearing occurs at the interface between the high-speed liquid flow and the surrounding low-speed liquid flow, which will generate a large number of local vortices. These vortices will spread around, and the liquid will be drawn into the vortex, forming turbulent convection and diffusion in a small area. This is called vortex diffusion.
Minimize the influence of other factors on the mixing uniformity of the completed mixed materials: the mixed materials are pressed into granules so that the material components are fixed in the granules or directly bagged and packaged; the transportation and drop of the mixed materials are minimized; Reduce the loading and unloading work after mixing; minimize the falling, rolling or sliding of materials; the storage bin after mixing should be as small as possible.
