A tailings recovery process comprises: feeding ore pulp into a concentration barrel of a concentrating machine; driving the concentration barrel to rotate around its own central axis while the ore pulp flows, so as to enable the ore pulp to be continuously stirred and turn over in inner cavity of the concentration barrel; applying a magnetic field to the ore pulp by means of a magnetic field generation device; accurately sorting the ore pulp by means of a classifier, so as to enable selected minerals in the ore pulp to be exposed under the action of the magnetic field in processes of rising and dropping, thus attaching to an inner wall of the concentration barrel and moving upwards until reaching a collecting area; by making the selected minerals fall into a material receiving trough of the concentrating machine in the collecting area, enabling other materials in the ore pulp except the selected minerals to enter into a tailings trough of the concentrating machine at the bottom of the inner cavity of the concentration barrel and then into a tailings conveying system.
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