The mixers produced by this company are classified into three groups:

Goals of mixing

Mixers are installed for different purposes in different industries. In some processes, mixing takes place for two or more goals. In the following, the definitions prevalent in mixing industry are described.

Coefficient of Variation (CoV)

All equipment used across the world has one output. For example, in an electric motor in which router starts to rotate in the stator by electricity, the produced Torque is considered as the output. In mixing industry, this output is computed with a coefficient called Coefficient of Variation (CoV).

If equal amounts of part A and part B are mixed together and, samples are taken from any point in the vessel immediately after the mixer in an ideal situation, Part A and Part B with equal concentrations of 50% would be obtained. CoV in this instance is zero.

Practically, a CoV lower than 0.02 denotes complete mixing, 0.02-0.05 shows normal mixing, and lower than 0.2 indicates preliminary mixing.

Blending

This type of mixing usually takes place in miscible fluids. If several miscible fluids are minimally mixed, homogeneous solution results after a specific period of time. There are five mixers regarding mixing power for blending fluids. The only difference among these mixers is the time period the homogeneous solution is obtained. Clearly, the higher the mixing power the shorter the homogenization time. The following diagram shows the relationship of mixing intensity, time, and viscosity.

Suspension

Suspension is a process in which solid particles are floated in liquid to increase the contact of the fluid with solid particles. In most processes, the goal of suspension is to prevent sedimentation through crystallization, chemical reaction, and solid blending. It is worth noting that the goal of suspension is not always to prevent sedimentation, and sometimes it is sought to accelerate sedimentation; e.g., coagulation process in mineral and water and wastewater treatment.

Dispersion

Dispersion is a process in which bigger particles are broken down into smaller ones. In solid/liquid mixing, dispersion means breaking down the liquid particles while in gas/liquid mixing dispersion is the process in which big air bubbles turn into smaller ones.

Emulsion

Emulsion is a process whereby non-miscible liquid particles are dispersed in another liquid. If the size of these particles is 1 μm to 1 nm, the mixture is called a colloidal emulsion. Emulsion mixture is one of the most common mixtures used in everyday life. Examples of emulsion mixture include butter, mayonnaise, shampoo, and liquid soap.

Fermentation

Fermentation is a process through which bacteria turn one or more elements into other elements or decompose them. This process is one of the oldest methods of treating elements without using chemicals. In wastewater treatment industry, for example, organic solid materials are turned into the harmless and miscible-in-water material by sludges that are known as yeast. Suitable mixing is very important in this process because intense mixing removes the yeast and weak mixing results in the absence of stable physical and chemical properties such as temperature, concentration, and pH.