A device and process for recovering lithium from a once-removed impurity residue of spodumene

Abstract

This invention provides an apparatus and process for recovering lithium from primary impurity removal slag of spodumene, relating to the field of solid waste resource utilization technology. The apparatus includes a washing tank, a mounting frame, a drive mechanism, a water replenishment mechanism, and a feeding mechanism. The water replenishment mechanism includes a drive shaft laterally rotatably connected inside the mounting frame, with two first synchronous pulleys fixed to the circumferential side of the drive shaft. This solution ultimately achieves defoaming treatment of the water surface by driving the pipes and nozzles counterclockwise through the drive shaft. During one counterclockwise rotation of the drive shaft, the feeding frame switches from a horizontal to a vertical feeding state through the cooperation of the drive disc, connecting rod, and swing frame, discharging the impurity removal slag onto the liquid surface. When the slag is added, the foam on the water surface has been dispersed or diluted by the sprayed water, forming a foam-free or low-foam feeding window, fundamentally avoiding the clumping and splashing problems caused by powder being sprinkled on the foam, thus improving the lithium dissolution efficiency and recovery rate.

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