Due to the diversity of powder characteristics, seemingly simple powder mixing processes often encounter mixing difficulties of one kind or another. Some of the reasons for these difficulties are very complex, making it difficult to achieve uniform mixing. There are various types of mixed problems, and below we list several common and classic mixed problems.

1、 Difficulty in mixing poorly flowable powders evenly

Due to poor flowability of powder (which can form a collapse angle of powder), it is a common mixing process problem that the powder is not easily mixed evenly. The causes and solutions of this problem can be found in Topic 5 of the Powder Mixing Encyclopedia.

2、 Difficulty in mixing powders with good fluidity

When the fluidity of the powder is too good, that is, the powder particles are circular and have a smooth surface, secondary differential segregation is prone to occur during mixing (such as circular particles running fast and geometric particles running slowly), which brings difficulties to uniform mixing. For detailed information, please refer to Topic 6 of the Powder Mixing Encyclopedia.

3、 Difficulty in mixing light and heavy powders evenly

Mixing light powder and heavy powder together is a typical mixing process challenge, where light powder floats up and heavy powder sinks during movement, making it difficult to mix evenly. For detailed information, please refer to Topic 14 of the Powder Mixing Encyclopedia.

4、 The difficulty of mixing light powder and ultra-light powder evenly

If all the materials to be mixed are light powder or ultra-light powder, due to the light weight and small gravitational force of the ultra-light powder, it often floats in the air above the material, making it difficult for the mixing to proceed smoothly. For detailed solutions, please refer to Topic 15 of the Powder Mixing Encyclopedia.

5、 Difficulties in mixing micro powder, nano powder and ultra-fine powder

If the materials to be mixed contain micro powder, nano powder, and ultra-fine powder, it will also cause problems for uniform mixing. The reason is that the material particles are too small, and the weight will inevitably drop. The ultra-fine powder that loses the gravitational binding will easily float upward in the powder mixing movement, which will bring difficulties for uniform mixing. For detailed solutions, please refer to Topic 16 of the Powder Mixing Encyclopedia.

6、 Difficulty in mixing powder with trace elements evenly

When the material to be mixed contains trace elements with an added amount of less than one percent or even one thousandth, it becomes very difficult to evenly disperse and mix the trace elements. If trace elements accumulate in the dead corners of the material, it will lead to mixing failure. For detailed solutions, please refer to Topic 17 of the Powder Mixing Encyclopedia.

7、 The problem of sticky clumping and difficult mixing of fake particles in the powder

Due to the stickiness, moisture, and electrostatic adsorption of the powder, it is difficult to break down the particle structure in conventional mixing equipment and processes, resulting in difficulties in mixing. For detailed solutions, please refer to Topic 28 of the Powder Mixing Encyclopedia.

8、 The problem of uneven mixing of bundles or clusters of fibers in the powder

If the powder contains bundles or clusters of fibers (such as in the powder raw materials of automobiles or high-speed rail brake pads), a mixing device with a flying knife dispersing function must be used to disperse the fibers evenly and distribute them in the powder. For detailed solutions, please refer to Topic 25 of the Powder Mixing Encyclopedia.