A continuous ion exchange device and lithium extraction process for extracting lithium

Abstract

The invention discloses a continuous ion exchanging device for extracting lithium and a lithium extraction process. The continuous ion exchanging device for extracting lithium comprises a running base and a plurality of adsorbing columns; the running base comprises an adsorption region, a drip washing region and a desorption region; the plurality of adsorbing columns are arranged on the running base and are distributed in the adsorption region, the drip washing region and the desorption region; the adsorbing columns in the adsorption region communicate with a raw material liquid charging pipe; the adsorbing columns in the drip washing region communicate with a drip washing liquid charging pipe; the adsorbing columns in the desorption region communicate with a desorption liquid charging pipe; and the positions of the absorption region, the drip washing region and the desorption region on the running base are successively replaced. The lithium extraction process adopts the continuous ion exchanging device; with the passage of time and the operation of the running base, the absorption region, the drip washing region and the desorption region on the running base separately implement adsorption operation, drip washing operation and desorption operation; all regions are continuously and alternately replaced so that the overall lithium extraction operation can be quickly and continuously implemented, and thus the lithium extraction efficiency and the comprehensive development and utilization efficiency of resources are improved.

Description

technical field [0001] The invention relates to the technical field of lithium extraction technology of brine (containing brine) or seawater, in particular to a continuous ion exchange device for extracting lithium and a lithium extraction process. Background technique [0002] Lithium is a silver-white metal element, which is widely used in rechargeable batteries, glass, ceramics, alloys, lubricants, medicine and other fields, especially rechargeable lithium batteries have been used as the main power of hybrid electric vehicles and electric vehicles in recent years source has received extensive attention. In addition, there is a huge market for using lithium in existing small batteries such as mobile phones and notebook computers. As a result, lithium is in high demand both domestically and abroad across the industrial spectrum. [0003] Salt lake brine-type lithium deposits account for 66% of the world's lithium resources. Existing methods for extracting lithium from sal...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a continuous ion exchange device and method for extracting lithium, which is used to solve the problem that the existing lithium extraction process cannot be carried out rapidly and continuously, and the traditional method for extracting lithium requires more production equipment and difficult process operations. Complexity, time-consuming, high investment cost, and low extraction rate of lithium

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