Method for recycling silver from jarosite residue

The invention relates to a method for recycling silver from jarosite residue. The method for recycling silver from the jarosite residue comprises the following steps: mixing the jarosite residue with pulverized coal and a desulphurizing agent, and briquetting, thus obtaining mixed spheres, then putt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MA HONGZHOU, FAN PENGBIN, TANG WENDAN, GUI HAIPING, WANG YAONING
Format:	Patent
Sprache:	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 relates to a method for recycling silver from jarosite residue. The method for recycling silver from the jarosite residue comprises the following steps: mixing the jarosite residue with pulverized coal and a desulphurizing agent, and briquetting, thus obtaining mixed spheres, then putting the mixed spheres into a vacuum distillation furnace, and heating at the temperature of 1100-1300 DEG C, thus silver in the jarosite residue is separated, wherein the molar weight ratio of the added pulverized coal to the desulphurizing agent to silver in jarosite residue is 1 to (2-10) to (0.1-10). The method for recycling silver from the jarosite residue has the advantages that the ratio of the pulverized coal to the desulphurizing agent to the jarosite residue is reasonably controlled, and the separation of silver from jarosite residue under the vacuum condition of 1100-1300 DEG C is realized; besides, the whole technological process is carried out in a vacuum furnace, influences on personnel and environments are slight, the method and the required equipment are simple, safe and controllable and are easy to operate, and silver can be recycled from the jarosite residue effectively.