Method for recycling manganese and lead in electrolytic manganese anode mud

• Main Authors: DENG YONGGUANG, LIU DENGXIANG, HUANG GUANHAN, HE SUJIE, YANG YONG, MING XIANQUAN, QIN XUZHI, LIANG MIN, WU XIAODAN, WEI XUTIAN, LIU DONGZHU, YAN CHAO
• Format: Patent
• Language: English
• Published: 11.11.2015
• Subjects: APPARATUS THEREFOR; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a method for recycling manganese and lead in electrolytic manganese anode mud. The method is characterized by comprising the following steps that (1) the electrolytic manganese anode mud is subjected to reduction leaching, anode liquor, reducing agents and a concentrated sulfuric acid solution are sequentially added into the electrolytic manganese anode mud to be subjected to a reduction reaction for 6-10 h, then filter pressing is conducted, and leaching residues containing PbSO4 and leaching liquor containing MnSO4 are obtained; (2) the leaching residues are processed, the obtained leaching residues are aired at the temperature of 30-35 DEG C until the moisture content is smaller than or equal to 5%, and then a lead concentrate product can be obtained; and (3) the leaching liquor is processed, the leaching liquor obtained in the step (1) is collected and then is reused as anode liquor to be recycled according to the step (1). The problem of stacking pollution of the electrolytic manganese anode mud is solved, separation of manganese and lead can be achieved, valuable lead is recycled, and economic value is created. The method is easy to operate, has feasibility and has certain popularization value in the production of the field.