Sedimentation-Based Separation and Purification of Solid …
A three times sedimentation can increase the percentage of calcium sulfate dehydrate from 87.45 to 95.72% in phosphogypsum. This process can be illustrated by classical mechanics and Stokes' law. The terminal speed of calcium sulfate dihydrate particles is estimated to be 1.47 × 10 –2 m/s. It is challenging to separate calcium …