CLASSIFIER FOR POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR REGENERATING LITHIUM PRECURSOR BY USING SAME

In a method for regenerating a lithium precursor, a cathode active material mixture that includes an active material powder including lithium composite oxide particles and dust particles is prepared. The dust particles are separated from the cathode active material mixture using a classifier to coll...

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Bibliographische Detailangaben
1. Verfasser:	HA, Hyeon Bae
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM INORGANIC CHEMISTRY METALLURGY OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL PERFORMING OPERATIONS SEPARATING SOLIDS FROM SOLIDS SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS SORTING TRANSPORTING
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Beschreibung
Zusammenfassung:	In a method for regenerating a lithium precursor, a cathode active material mixture that includes an active material powder including lithium composite oxide particles and dust particles is prepared. The dust particles are separated from the cathode active material mixture using a classifier to collect the active material powder. The active material powder is reduced to form a preliminary precursor mixture. A lithium precursor is recovered from the preliminary precursor mixture. The lithium precursor can be obtained with high purity and high yield.