How Pneumatic Blender Works? Blender is charged with powders to be blended in the blender either by...

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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..

Transcript of How Pneumatic Blender Works? Blender is charged with powders to be blended in the blender either by...

Page 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.

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..

Page 2: 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.

How Pneumatic Blender Works?

• Agitating pulse duration is about 300 to 500 milli seconds.

• Interval between pulse is around 20-35 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.

Page 3: 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.

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.

Page 4: 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.

Comparison between mechanical & Pneumatic Blending

Mechanical 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

Pneumatic Blenders• 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

Page 5: 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.

PID for Pneumatic Blender

Page 6: 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.

Pneumatic BlenderGeneral Arrangement

Page 7: 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.

Inside Details of Pneumatic Blender


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