Study on Sedimentation Differences among Akund Fiber, its Seed and Capsule

In order to better understand the separation and cleaning of akund fibers and the potential for developing separation machinery evaluated, the sedimentation differences among single akund fiber, its seed and capsule are investigated. Based on the spherical degree, the mathematical model about free dropping velocity of single akund fiber is established and the dropping method is taken in the experiment. The dropping velocity of single akund fiber calculated by mathematical relationships is 0.0592 m/s, and the velocity calculated by dropping experiment is between 0.047 m/s~0.072 m/s, which average velocity is 0.0583 m/s. The dropping velocity of a third of capsule which is the main state after mechanical treatment calculated by dropping experiment is between 0.900~1.17 m/s. Moreover, the average dropping velocity of seed calculated by dropping experiment is 1.589 m/s. The dropping velocity of capsule and seed are much higher than that of akund fiber. And if there is no adhesion between akund fiber and capsule after mechanical treatment, the complete theoretical separation of akund fiber from its capsule and seed using airflow is possible.