Dynamic circulating-stage continuous countercurrent extraction process

The dynamic circulation staged continuous countercurrent extraction process is characterized by that it has several extraction units, the effective component contents in effective materials of all the extraction units and effective component contents in the solvents successively are decreased progressively, and its complete extraction process is continuously implemented by stages whose stage number is idential to the number of extraction units, and every unit can respectively independently make extraction operation. When the extraction process of some stage is completed, the unit whose effective component is completely extracted, it can make residue-removing and charging operations.