The utility model discloses a recovery concentrator in the technical field of lithium battery material recovery. the bottom of the outer wall of the right side of the reaction kettle is connected withone end of a thickener feeding pipe; the other end of the thickener feeding pipe is connected with the bottom of the thickener; the bottom of the right outer wall of the thickener is connected with one end of a thickener discharge pipe; the other end of the thickener discharge pipe is connected with the top of the right outer wall of the reaction kettle; a filtrate pipe is mounted at the top of the filter stick; the right end of the filtrate pipe is connected with the left side of the top of the settling tank; a settling tank discharge pipe is mounted on the left side of the bottom of the settling tank; the left end of the settling tank discharge pipe is connected with the outer wall of the thickener discharge pipe; a valve is mounted on the outer wall of the settling tank discharge pipe;According to the utility model, the thickener filtrate is discharged into the precipitation tank for precipitation, materials in the filtrate are recovered, the obtained precipitate material is returned to the reaction kettle for continuous reaction, materials lost in the thickener filtrate are recovered, the product yield loss is reduced, and the production cost is saved.