DEVICE FOR EXTRACTING LITHIUM FROM BRINE BY USING ADSORPTION METHOD

摘要

The present invention relates to the technical field of adsorption-based lithium extraction devices, and provides a device extracting lithium from brine by using an adsorption method. The device comprises a belt-type vacuum filter; the belt-type vacuum filter is connected to a solid-liquid mixing mechanism used for mixing brine and an adsorbent; a raw brine area, a salt leaching area, and a desorption area which are connected to each other are successively provided on the belt-type vacuum filter in a transmission direction thereof; the solid-liquid mixing mechanism is connected to the raw brine area; a first liquid delivery mechanism for delivering a salt leaching liquid and a second liquid delivery mechanism for delivering a desorbing liquid are respectively connected to the salt leaching area and the desorption area. Compared with adsorption by the existing adsorption towers, the present invention is low in investment cost, greatly reduces the investment and production costs in subsequent desalting and purification processes, and finally can stably obtain battery-grade lithium carbonate or lithium hydroxide.