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What are the types of material mixing?



Source: internal company

Material mixing refers to the homogenization of one or more materials to reduce or eliminate the uneven distribution of particle size, density, temperature and plasticity. It is a common material processing method.



1. The mixing method of materials can be classified from different perspectives:


1.1 From the continuity of mixing time, it can be divided into two methods:

  • Continuous mixing
  • Intermittent mixing

1.2 From the mixing mechanism, it can be divided into three categories:

  • Diffusion mixing
  • Convective mixing
  • Shear mixing

*Usually these several mixing mechanisms work at the same time

1.3 From the type of mixed raw materials, it can be divided into two types:

  • Multi-component material mixing
  • Single-component material mixing

1.4 From the structure of mixers, it can be divided into three types:

  • Horizontal mixing
  • Vertical mixing
  • Pouring mixing

1.5 From the mixing formation mechanism, it can be divided into two categories:

  • Gravity mixing —— that mainly depends on the diffusion of material flow to mix, such as cylinder mixer
  • Forced mixing —— that is the mainstream product which is forced to mix with various stirring tools. The mixing quality is good, and it is less affected by the particle size, shape, density, water content and fluidity of the material.


2. According to the different structural characteristics of the mixing parts, it can be divided into the following ways:


2.1 Rolling and mixing

  • Mixing method: the rolling wheel and scraper are used for rolling and mixing
  • Advantage: having the functions of crushing and plasticizing at the same time


2.2 Propeller or paddle mixing

  • Mixing method: using intermittent spiral, ribbon or stirring blade
  • Disadvantage: the mixing uniformity is generally not very good during continuous discharge


2.3 Shovel mixing

  • Mixing method: mostly using the vertical structure, the shovel blades are arranged in multiple directions
  • Advantage: good mixing uniformity
  • Apply to: intermittent mixing


2.4 Cylinder mixing

  • Mixing method: using the horizontal cylinder rotary mixing is used
  • Apply to: mixing of bulk materials that do not require very high mixing


2.5 Planetary mixing

  • Mixing method: the planetary principle
  • Advantage: good mixing uniformity
  • Apply to: rapid mixing of materials that require high uniformity and are prone to agglomerating


2.6 Multi-axis mixing

  • Mixing method: using multiple stirring shafts
  • Advantage: good mixing effect
  • Disadvantage: the complicated structure and the large power consumption

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