Underwater holding-type lithium recovering apparatus and method thererof

Abstract

Provided is an underwater holding-type lithium recovering apparatus 1000 including: an underwater holder 100 installed on an offshore sea bed; a lithium adsorbent 200 held in the underwater holder 100 and adsorbing lithium ions contained in seawater; a moving ship 300 installed with a cleaning tank 320 cleaning the lithium adsorbent 200 transferred from the underwater holder 100 and a desorbing tank 330 desorbing lithium ions adsorbed in the lithium adsorbent 200 transferred from the cleaning tank 320, and moved to a coastline when lithium ions of a reference value or more are filled in the desorbing tank 330; and a transfer pump 400 transferring lithium ions filled in the desorbing tank 330 to a reservoir 500 installed at the coastline.

Description

technical field [0001] The invention relates to an underwater lithium recovery device and method for recovering lithium contained in seawater. Background technique [0002] Recently, with the rapid development of mobile phones, notebook computers and electric vehicles, the world's demand for mobile energy is increasing. In particular, the application of lithium secondary batteries as the energy source has shown explosive growth. Currently, the lithium secondary battery industry is developing mainly in South Korea, Japan, and China. As the demand for lithium secondary batteries surges, the consumption of lithium, which is a core raw material, also increases sharply. In addition, lithium is used to breed tritium in thermonuclear fusion power generation, which is expected to be a next-generation energy source, so the demand for lithium is even greater. [0003] It is now estimated that there are about 250 billion tons of lithium ions dissolved in seawater, and it is beginning...

AI Technical Summary

Problems solved by technology

[0010] However, the lithium recovery station of the prior art 2 absorbs lithium by placing the lithium adsorbent on the adsorption tank cage of the recovery station itself suspended in the sea, but in large-scale chemical engineering, when the amount of lithium adsorbent used is huge , it is necessary to fabricate rather large adsorption tanks and cages for containing the lithium adsorbent, which will lead to the oversizing of the lithium recovery station

[0011] Therefore, prior art 2 has the problem of high construction and maintenance costs for complete sets of equipment for offshore lithium recovery stations

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