Powder density (specific gravity) plays a very important role in powder mixing

Powder density (specific gravity) plays a very important role in powder mixing. The smaller the difference in powder density, the easier it is for powder mixing to proceed, while the larger the difference in powder density, the more difficult it is for powder mixing. Powder density also has an impact on powder flowability, and under the same conditions, the higher the powder density, the better the flowability.
1、 The concept of powder density (specific gravity)
The density of powder refers to the mass of powder per unit volume. In practical applications, the density of powders can be divided into loose density and compacted density.
1. Loose density: refers to the ratio of the mass and volume of naturally accumulated powder within a small dose volume unit, where the powder is loosely bound.
2. Vibration density: refers to the ratio of the mass to volume of a powder that has been repeatedly vibrated and compacted per unit volume, with the powder in a relatively tight bonding state. Usually, the compacted density is 1.2-1.3 times the loose density.
3. The actual density of the material in the bucket: In practical applications, the comprehensive density of the powder in the mixing equipment bucket is between the loose density and the compacted density. Therefore, when calculating the loading capacity of the mixing equipment, the influence of these two densities should be considered.
4. The relationship between powder specific gravity and powder density:
Density is the ratio of powder mass to volume (the measurement method of mass is very complex); The specific gravity is the ratio of powder weight to volume (the method of measuring weight is very simple). The specific gravity and density of powder are almost equal in low altitude areas near sea level. Therefore, we usually use specific weight to approximate density.