The Ultimate Guide to Choosing powder mixing equipment

- Wednesday, April 7,

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There are various mixers on the market, including the series of V, CH, SH(3D), Double Cone, Planetary Cone, etc.

 To choose a right mixer, we should consider the physical characteristics of the materials to be fixed, like particle size, stickiness, moisture, and material difference. Besides, we should also consider whether the machine discharges mixed materials easily, whether its price is reasonable and whether it is easy to clean.

V-Series Mixer (Cost-Effective)

If the materials have the particle size larger than 0.01mm, with almost no difference among various particles and weak stickiness (Dynamic Angle of Repose &#; 45°), this cost-effective v type powder mixer is your first choice.

Double Cone Mixer (High-Efficiency)

Double Cone Mixer has the same applicability as V-Type Mixer, but it is a high-efficiency mixer. Thus, if you want a mixer with higher efficiency, the Double Cone Mixer is a better choice.

SH-Series Mixer (also known as 3D Mixer)

If the materials have the particle size larger than 0.01mm, with great differences among various particles and weak stickiness (Dynamic Angle of Repose &#; 45°), this 3D mixer is your first choice.

CH-Series Mixer (High output, suitable for both dry and wet materials)

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If the materials to be mixed are wet, with the particle size larger than 0.01mm, almost no difference among various particles, and weak stickiness (Dynamic Angle of Repose &#; 45°), the CH-Series Mixer is your first choice. However, you must know that this mixer is not easy to clean and not suitable for aseptic production.

Planetary Cone Mixer (Strong stickiness)

If the materials to be mixed are dry, with the particle size larger than 0.01mm, with great differences among various particles and strong stickiness (Dynamic Angle of Repose&#;45°), and you have a higher production demand, the Planetary Cone Mixer is the best choice. By the way, due to its special structure, you may have some difficulty in cleaning it.

What is a Powder Mixer?

Combining dry ingredients is one of the oldest unit operations in the processing industries. Over the years, many different types of equipment have been developed to homogenize dry materials, including powders. Let&#;s look first at some common definitions used in describing powder mixers.

As the name suggests, powder mixers are various types of sanitary mixers used to either:

1. Combine two flowable dry materials
2. Mix a powder into a liquid

While the focus of this article will be primarily on mixing powders into liquids, there are mixing technologies which are common to both applications.

Commonly used in the dairy, food, and beverage industries, powder mixers may be either batch-type or continuous feed. And, they rely on two different mixing technologies, depending on the physical properties of the powder being mixed.

In the case of powders which are relatively incohesive&#;that is, without particles that easily stick together&#;a convective mixing process, such as that found in the ribbon mixer described below, may be used to thoroughly combine the dry ingredients.

When materials are cohesive, though&#;prone to sticking together, as is the case with fine powders, and also with wet materials&#;then a more intensive mixing process is required using either impact force or shear force to thoroughly combine ingredients. The high shear mixers and liquifiers described in later sections of this article are examples of these intensive-type mixers.

Key issues in powder mixing

There are a couple of operating parameters that impact the productivity of powder mixing. As a general rule, sanitary processing plant operators will seek to achieve as short a mixing time as possible to increase their line productivity. The greater the volume of the powder to be mixed, the longer the time required to blend them together. However, doubling the volume does not necessarily mean doubling the mixing time.

Higher mixing speeds will generally result in shorter mixing times. However, it is essential to note that using excessive mixing speeds with some powders can result in particle breakage and affect product consistency, so processors must consider this factor when mixing.

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