What is the difference between a tank mixer and a paddle mixer?
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In which occasions are they applied respectively? Should box mixers or paddle mixers be used for PAC mixing and PAM mixing?
A paddle mixer will do; if I’m not mistaken, it’s used in sewage separation machines.
For selecting the appropriate mixer, you can refer to the chapter on mixing equipment in the Comprehensive Book of Chemical Equipment Design, which provides detailed information. Generally, frame mixers are suitable for large-scale, low-speed mixing to prevent material sedimentation. Paddle stirring is suitable for small-scale, high-speed mixing with high local mixing intensity.
What was said upstairs is correct. To give a simple example, for unit operations, a tank type mixer can be used for crystallization processes, while paddle type mixers can be used for most other processes; paddle type mixers have a wider range of applications.
Slurry impellers are more suitable for PAC and PAM, but care should be taken in the mixing of PAM to prevent clumping from occurring