Technique for extracting silver from copper anode mud solution after pretreatment

The invention is a new process for extracting silver from liquid acquired by copper anode mud pretreatment. To begin with, solid natriumiodide, potassium nitrate and sodium sulfide are dissolve in workshop silver separating excessive reducing liquid containing sodium sulfite, and the reducing liquid...

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Bibliographische Detailangaben
Hauptverfasser:	ZHAO LUNA, OUYANG HUI, LIU CHANGYONG, DENG CHENGHU, XIAO HUI, ZHENG CHUNDAO, HU JIANHUI, LIANG YAQUN, CHEN LIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS 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 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
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Beschreibung
Zusammenfassung:	The invention is a new process for extracting silver from liquid acquired by copper anode mud pretreatment. To begin with, solid natriumiodide, potassium nitrate and sodium sulfide are dissolve in workshop silver separating excessive reducing liquid containing sodium sulfite, and the reducing liquid is stirred and slowly added to the liquid acquired by copper anode mud pretreatment, after reaction for half an hour, PAM flocculating agent is added to get crude silver iodide, after hot acid scrubbing, the scrubbed silver iodide is added to hot sodium sulfide solution, finally silver sulfide enriching slag is got for the next extracting simple substance silver. The invention has the advantages of simple process and easy to operate, and the produced crude silver power has high quality and is enriched with other noble metals.