An Apparatus and Method for Dry Separation of Materials Based Upon Their Density Difference

The efficiency of Pneumatic pulsated separators in the density-wise separation of particles is enhanced and dead zones are minimized. No usage of chemicals, water leads to reduction in slurry discharge into water bodies there by enhancing environmental safety and reducing dewatering processes will add to economical advantages

The developed dry separator is used in any field which separates materials/minerals based on their density difference without using any chemicals, water. The technology key technical features are as follows: 

• The angle of Fluidization adjustment from 0-90 degrees resulting in a change in force balance of particles.
• Dry density separation of materials ranging from  500 kg/m3 - 7000 kg/m3. This range of density separation can be enhanced by enhancing the fluidization which can be done in the fabricated dry separator.
• The pulsation frequency of air is in between 0-60 Hz

• Bubbling which is most common in gas fluidized beds can be reduced.
• Forces balance on the particle changes, as fluidization forces are at an angle, which resulted in a decrease in the minimum fluidization velocity of particles.
• The difference between minimum fluidization velocity of low-density particles and fluid velocity is enhanced compared to the difference between minimum fluidization velocity of the high-density particle and fluid velocity which results in improved separation.
• Dead zones are minimized due to inclined fluidization as air traces a larger path reaching long lengths of a separator