Mixing is an operation that tends to reduce the non-uni […]
Mixing is an operation that tends to reduce the non-uniformity of a mixture. It is the refinement and distribution of materials that are re-evaluated without substantial changes. The mixing process can be divided into several categories. The distribution is agitated mixing, dispersion mixing, diffusion mixing, shear mixing, and the like. Let's take a look at the difference between different mixing processes.
Stirring and mixing: Most of them are used for materials that are compatible, and the materials are mixed with each other by stirring, without changing the properties of the materials. With the stirring paddles to drive the particles or the liquid material to flow, the particles or liquids gradually dissolve during the flow to achieve the mixing effect. Related equipment: Mixing Tank, sandwich pot and so on.
Dispersive mixing: It refers to minimizing the size of material particles in the mixing process, increasing the interface between phases, improving the homogeneity of the mixture, and then mixing the materials through the action of force. Related equipment: dispersion tanks, dispersion emulsion tanks, etc.
Diffusion mixing: For mutually soluble components such as solids and liquids, liquids and gases, liquids and liquid components, etc., during the mixing process, there is no regular movement in the form of molecular diffusion around, thus increasing the contact between the two components. Area and shorten the diffusion mean free path to achieve a uniform distribution.
Shear mixing: Because the particles in the material group form a slipping and colliding action between the shear surfaces, they cause local mixing, which is called shear mixing. Under the effect of shearing, the particle size of the material is elongated or deflected, and the cross-section becomes thinner, so that the surface area thereof increases, so that the contact surface and the contact chance with other materials become larger and the chance of seepage with each other becomes larger, and eventually the uniformity is reached. The purpose of mixing. Related equipment: high shear emulsifying pump, emulsifying head and so on.