1. How Pneumatic Blender Works?
Blender is charged with powders to be blended in the blender either by pneumatic conveying or otherwise.
Air is blown into powder bed through fluidizing cone
After the powder in the vessel is completely fluidized, Agitating air pulses are introduced through bottom nozzle.
Contd..

2. How Pneumatic Blender Works?
Agitating pulse duration is about 300 to 500 milli seconds.
Interval between pulse is around seconds.
After about 30 to 40 minutes pulsing is stopped and material is discharged through bottom nozzle
While discharging fluidizing air is still blown in the material to avoid segregation of material.

3. Data Required For Designing Pneumatic Blender
We need to know following properties of material.
Particle Size (Maximum and Minimum)
Standard deviation between particle sizes
Fluidizing Property of Material/ Powder
All above properties can be checked at our works.

4. Comparison between mechanical & Pneumatic Blending
Mechanical Blenders
Pneumatic Blenders
For 5 T powder Blending Required time is about 3-4 Hrs
Temperature rise of blend is about 20o to 30o C
For 5 T blender about 30Kw is required for 4 hrs.= 120Kwhr
Some Pigments are sensitive to temperature rise thus causing loss of quality
For 5 T blending time is about 40 minutes.
No Significant Temperature rise.
Total Power consumption of 5kW for ½ Hr.= 2.5 kwhr.
No temperature rise hence no loss of Quality

5. PID for Pneumatic Blender

6. Pneumatic Blender General Arrangement

7. Inside Details of Pneumatic Blender