Homogeneous emulsifiers and colloid mills are both a kind of high-quality materials obtained by grinding materials to achieve the purpose of homogenization, and have been widely used in food, medicine, chemical and other industries. But what are the differences in the process performance and application range of these two equipment? Which one should you choose when choosing? The following editor will introduce the difference between a homogeneous emulsifier and a colloid mill in detail, and I hope to bring you some help.
High shear desorption emulsification is the process of efficiently, quickly and uniformly bringing one phase or multiple phases (liquid, solid, gas) into another incompatible successive phase (usually liquid). Under normal circumstances, the phases are incompatible with each other. When external energy is input, the two materials recombine into a homogeneous phase. Because of the high tangential speed and the weak kinetic energy brought by the high-frequency mechanical effect of the high-speed rotation of the rotor, the material is subjected to intense mechanical and hydraulic shearing, centrifugal kneading, and liquid layer conflict in the narrow gap between the stator and the rotor. Inductive effects such as impact tearing and turbulence constitute suspension (solid/liquid), emulsion (liquid/liquid) and foam (gas/liquid). In this way, the immiscible solid phase, liquid phase, and gas phase are instantaneously and accurately dispersed and emulsified under the combined effect of the corresponding sophisticated technology and appropriate amount of additives. After high-frequency cyclic reciprocation, stable high-quality products are finally obtained.
The colloid mill is driven by a motor through a belt drive to drive the rotating teeth (or rotor) and the fixed teeth (or stator) to rotate at a relatively high speed. The processed material passes through its own component or external pressure (which can be generated by a pump). The downward spiral impact force is generated through the gap between the fixed and rotating teeth (the gap is adjustable), and the material is effectively emulsified by physical effects such as large shear force, conflict force, and high-frequency vibration. Dispersion and destruction, to achieve the effect of superfine destruction and emulsification of the material.
From the principle point of view, they all have grinding and destruction effects. The refining effect of colloid mills is generally weaker than that of emulsifiers, but it has strong adaptability to materials (such as high viscosity, large particles), so in many occasions, it The front end of the homogenizer may be used for high viscosity occasions. Colloid mills are often used for refinement when there are more solid substances.
In summary, the process performance and application range of homogeneous emulsifiers and colloid mills are very different. Homogeneous emulsifiers are suitable for the use of high-viscosity materials, while colloid mills are more used for solid materials, so Homogeneous emulsifier has higher grinding and refining effect than colloid mill