The best tools for combining powders and semi- solids are mass mixers. Mass mixers have a motor with a higher power than conventional blenders. There are two different types of mass mixers that come in varying handling capacities: the single trough mass mixer and the double trough mass mixer. Although the double trough mass mixer costs 75% more than the single trough mass mixer, it can mix materials more quickly and efficiently with larger volumes.
It is widely used in:
 
Spice Powder Industries
Instant Tea/Coffee
Medicine Manufactures.
Feed industries.
Chemical Industry.