Engineering Resources
properties and flow
Pneumatic transport
Process Safety
Welcome to

Powder Mixing

Powder Blending
Solids Mixing
Solids Blending

Question or remark ? Please contact us at

This index gives access to all knowledge interesting to Process Engineers in the field of Dry Mixing

Dry Mixing of powder and solids

Coefficient of variation - How to calculate homogeneity of a dry-mix

Calculation of the coefficient of variability of a mixture, mathematical representation of the homogeneity

Froude number

Calculation of Froude number, physical interpretation for mixing, usual values


What means having a good homogeneity

Loading sequence Batch mixers

How loading sequence impacts mixing efficiency

Mixer ATEX speed

Meaning and calculation of the ATEX speed of a mixer

Mixer access

Different designs for accessing mixers

Mixer bearing seals

Design of mixer bearing seals for ATEX compliance

Mixer discharge time - Improve discharging time of mixer

Discharging time profile, optimization and typical discharge time for different types of outlet

Mixer discharge valve

Different designs for mixer discharge valves

Mixing mechanisms

Diffusive mixing, convecting mixing, shear mixing

Mixing speed

Usual mixing speed for each mixer type

Mixing time - Calculate and improve mixing time

Expected mixing time for each mixer type

Mixing tool tip speed

Calculation of the agitator tip speed

Best mixers

Main types of mixers used for solids and powder blending

Powder mixing troubleshooting guide

How to solve problems related to industrial mixing of powder / solids

Mixing volume - Minimal Nominal Maximum volume - Increase mixer capacity

Differences in between minimal, nominal and maximum volume of dry-mixers, typical values

Power consumption

Typical mixing power consumption for each mixer type


Sampling methods

Segregation and Demixing


Typical tracers and how to chose tracers

Continuous mixing

Specificities, control and key design points for a continuous mixing line

Differences batch mixing and continuous mixing

Compares continuous and batch mixing

Loss in weight feeding

Design, installation, control of loss in weight feeders


The content of is copyrighted but no warranty nor liability is ensured. The content of this site is to be seen as a help and important information and calculation must always be double checked by the user through the quality procedure of his organization or by checking another source. The user must always respect all applicable regulation. The use of the information is at the user and its organization own risk and own cost. is secured by SSL encryption

Follow us on Twitter