| 摘要 |
The present invention relates to a continuous elution and absorption apparatus comprising an upright column having a first upper end and a second lower end, means for feeding particulate material into the first end of the column, inlet means for feeding liquid into the column adjacent the second end thereof, outlet means for removing liquid from the column and means for removing particulate material from the second end of the column, wherein the outlet means for removing liquid comprises a screen located at an intermediate point between the first and second ends through which screen the liquid passes while the particulate material is retained in the column, said intermediate point being located above the point of introduction of the liquid so that liquid flows upwardly through the column, and there being provided screen means for preventing upflow of liquid to the first upper end of the column so that particulate fed into the first end of the column tends to rill and excess liquid flows downwardly and out through the screen means. |
