NOVEL LITHIUM ADSORBENT AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a chemically stable lithium adsorbent excellent in selective adsorptivity, increased in rate of adsorption and adsorption capacity and by which adsorption and desorption are repeated. SOLUTION: This lithium adsorbent is prepared by eluting lithium from a heated phosphate containing lithium with an acid. The adsorbent is manufactured by heating lithium-containing chromium phosphate at >=500 deg.C and then treating the phosphate with an acid to elute lithium. The phosphate compound has >=2 molecules of lithium per one molecule of chromium.