Posco Co., Ltd

Research Institute of Industrial Science & Technology

Heok Yang

Kwang Seok Park

Woonkyoung Park

Seung Taek Kuk

Woo Chul Jung

Juyoung Kim

Hyun Woo Lee

Ki Young Kim

Young-Seon Ko

Sang Won Kim

Jung Kwan Park

Gi-Chun Han

Sang Gil Lee

Sung Kook Park

Jin Yeop Wi

Young-Su Kwon

Hyunwoo Lee

This disclosure relates to a method of preparing a lithium compound that includes preparing a lithium phosphate, mixing the lithium phosphate with sulfuric acid to obtain a mixture, converting the lithium phosphate into lithium sulfate through a reaction in the mixture, and separating the lithium sulfate in a solid phase, wherein in the step of converting the lithium phosphate into lithium sulfate through the reaction in the mixture, a sum concentration ([P+S] mol/L) of phosphorus (P) and sulfur (S) in a liquid phase of the mixture is greater than or equal to 5 mol/L.

Method of preparing lithium compound

A lithium adsorption molded body includes a lithium adsorbent and a copolymer including a repeating unit represented by and a repeating unit represented by in which Rand Rare each independently hydrogen or a C1 to C10 alkyl group.

Lithium-adsorptive molded object

It is introduced that a device of manufacturing lithium sulfate comprising: a reaction body in which a reaction of lithium phosphate and sulfuric acid is performed, the reaction body being divided into an upper space and a lower space; a pressurizer for applying pressure to the inside of the reaction body; a stirrer disposed in the upper space for stirring the lithium phosphate and sulfuric acid to produce a mixture containing lithium sulfate and phosphoric acid; and a filter disposed inside the reaction body and separating the filtrate containing the phosphoric acid into the lower space by filtering the mixture.

Manufacturing apparatus for lithium sulfate and manufacturing method therefor

The present invention relates to a method for producing lithium phosphate, comprising: passing a lithium-containing solution through an aluminum-based adsorbent to adsorb lithium on the aluminum-based adsorbent, passing the distilled water or an aqueous solution having a lower lithium concentration than the lithium-containing solution through the aluminum-based adsorbent on which the lithium is adsorbed to obtain a lithium-containing desorption solution, and putting a phosphorous supplying material in the lithium-containing desorption solution to obtain lithium phosphate.

Preparation method for lithium phosphate, preparation method for lithium hydroxide, and preparation method for lithium carbonate

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Pohang-si, South Korea

Heok Yang