Method for recovering valuable metal

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United States of America Patent

PATENT NO 11851729
APP PUB NO 20230212710A1
SERIAL NO

18014187

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Abstract

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The present invention provides a method which is capable of more strictly controlling the oxygen partial pressure required during the melting of a starting material, thereby being capable of recovering a valuable metal more efficiently. A method for recovering valuable metals (Cu, Ni, Co), said method comprising the following steps: a step for preparing, as a starting material, a charge that contains at least phosphorus (P), manganese (Mn) and valuable metals; a step for heating and melting the starting material into a melt, and subsequently forming the melt into a molten material that contains an alloy and slag; and a step for recovering the alloy that contains valuable metals by separating the slag from the molten material. With respect to this method for recovering valuable metals, the oxygen partial pressure in the melt is directly measured with use of an oxygen analyzer when the starting material is heated and melted.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO METAL MINING CO LTDTOKYO 105-8716

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yamashita, Yu Niihama, JP 31 18

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