Recycling method of anode mud produced by electrolytic manganese metal

The invention relates to a recycling method of anode mud produced by electrolytic manganese metal. The method comprises the following steps that A, the anode mud is ground into 80-100 mesh powder, andis subjected to slurrying, then sulfur dioxide is introduced, stirring, and heating are conducted du...

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Bibliographische Detailangaben
Hauptverfasser: TANG SHIZHU, ZHANG XUELIAN, PANG LIANHONG, PANG LIEPEI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a recycling method of anode mud produced by electrolytic manganese metal. The method comprises the following steps that A, the anode mud is ground into 80-100 mesh powder, andis subjected to slurrying, then sulfur dioxide is introduced, stirring, and heating are conducted during a sulfur dioxide introduction process, or ammonium sulfite is added after slurrying, then concentrated sulfuric acid is added, the pH is adjusted to 2.5-3, impurity removing and pressure filtration are conducted, and generated filter residue lead sulfate is recovered to obtain a solution containing manganese sulfate and manganese dioxide; B, the solution obtained in the step A is cooled to 38-42 DEG C, ammonia water is added, solid-liquid separation is conducted after pressure filtration to obtain a manganese hydroxide pressure filtration block and an ammonium sulfate solution; and C, the manganese hydroxide pressure filtration block is subjected to leaching by using an anode liquid subjected to anode mud filt