Electrochemical extraction device and method for lithium

The invention relates to the technical field of electrochemical metallurgy, and discloses an electrochemical extraction device and method for lithium. A first circulation tank comprises a first inlet and a first outlet which communicate with each other; a first circulating pump; the second circulating tank comprises a second inlet and a second outlet which are communicated with each other; a second circulating pump; an anode chamber and a cathode chamber which are isolated by a diaphragm are arranged in the electric pile, the anode chamber is provided with an anode plate, and the cathode chamber is provided with a cathode plate; the first outlet is communicated with the inlet of the anode chamber through the circulating pump; the outlet of the anode chamber is communicated with the first inlet; the second outlet is communicated with the inlet of the cathode chamber through a second circulating pump, and the outlet of the cathode chamber is communicated with the second inlet. According to the device and the me