METHOD FOR RECOVERING TUNGSTEN FROM WASTED SLUDGE
An economical manufacture process where calcinations is unnecessary tries to be provided react with the inorganic acid and valuable metal(co, and Ti and Ni) included in the sludge are eluted and the high purity tungsten powder is collected. A method for recovering the highly purified tungsten powder...
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Main Author | |
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Format | Patent |
Language | English |
Published |
18.12.2008
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Subjects | |
Online Access | Get full text |
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Summary: | An economical manufacture process where calcinations is unnecessary tries to be provided react with the inorganic acid and valuable metal(co, and Ti and Ni) included in the sludge are eluted and the high purity tungsten powder is collected. A method for recovering the highly purified tungsten powder from the sludge performs a step drying the sludge containing the tungsten and gets the dry powder; a impurity removal step for removing impurity from the dry powder; and an acid processing step for separating the tungsten from the other component by using the inorganic acid, the powder removing impurity through the impurity removal stage is undergone an acid process. |
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Bibliography: | Application Number: KR20070059108 |