| 摘要 |
A classifier and a method of separating material using such a classifier are disclosed. The classifier comprises a mixing chamber having a mixing fluidisation floor and a concentration chamber having a concentration fluidisation floor. The concentration fluidisation floor and at least a portion of the concentration chamber is located below the mixing fluidisation floor. The method of separating material using such a classifier comprises delivering material to be separated into a mixing chamber of the classifier, fluidising the material in the mixing chamber; transferring some of the material to a concentration chamber of the classifier in fluid communication with the mixing chamber, fluidising the material in the concentration chamber, forming a concentrating fluidised bed in the concentration chamber, separating the material with at least the concentrating fluidised bed and drawing heavier portions of the separated material from the concentration chamber. |
