Method for selectively recovering lithium from lithium battery

The invention provides a method for selectively recovering lithium from a lithium battery. The method comprises the following mode I: roasting a mixture of lithium battery pole powder, ammonium sulfate and carbon powder, and leaching a roasted product to obtain a lithium leaching solution; or mode I...

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Bibliographische Detailangaben
Hauptverfasser:	SUN JUN, ZHOU MINGXIAN, LU JUNHAO, WU JIE, YE XIAOZHOU, LU TONGXIAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention provides a method for selectively recovering lithium from a lithium battery. The method comprises the following mode I: roasting a mixture of lithium battery pole powder, ammonium sulfate and carbon powder, and leaching a roasted product to obtain a lithium leaching solution; or mode II: roasting the mixture of the lithium battery pole powder and ammonium sulfate, leaching the roasted product, and adding alkali liquor to remove impurities, so as to obtain a lithium leaching solution; or mode 3: roasting the mixture of the lithium battery pole powder, ammonium sulfate and carbon powder, leaching the roasted product, and adding alkali liquor for impurity removal to obtain the lithium leachate; the molar ratio of ammonium sulfate to lithium in the lithium battery pole powder is (0.8-1.5): 1; in the first mode or the third mode, the ratio of nC to 2nMn is (0.05-0.9): 1, and nC to nMn is the molar ratio of carbon in the carbon powder to manganese in the lithium battery pole powder. The method is simp