Abstract: A method according to an embodiment is for recovering a valuable metal from a waste electrode material of a lithium secondary battery by using lithium carbonate. An anode-cathode mixed electrode material that has been separated by draining, crushing, screening, and sorting a waste lithium secondary battery is preprocessed. A precipitation operation performed by adding lithium carbonate (Li2CO3) to a metal melt acquired by performing sulfuric acid dissolution using sulfuric acid. A valuable metal such as nickel, cobalt, manganese, aluminum, and copper is recovered as a residue in the form of a carbonate composite, and a lithium sulfate (Li2SO4) aqueous solution including lithium is recovered as a filtrate.

Abstract: A camera module includes a housing, a movable body configured to move in a direction of an optical axis of the housing; a reinforcing member formed integrally on one surface of the movable body, and configured to increase a rigidity of the movable body; and a first buffer member formed in the reinforcing member, and configured to reduce an impactive force between the housing and the movable body.

Abstract: An emergency mode operating method and a mobile device adapted to the method are provided. An emergency phone number is extracted using received DTMF tones. An emergency message and an outgoing emergency call are transmitted via the extracted emergency phone number. The method includes receiving Dual Tone Multi-Frequency (DTMF) tones from the other mobile device when the mobile device is operated in a call mode, acquiring an emergency phone number using a phone number based on the received DTMF tones, and operating an emergency mode based on the acquired emergency phone number.