MULTI-METAL RECOVERY FROM FLOTATION TAILINGS WITH CITRIC ACID ON THE NACl MEDIA

Authors : Emine YOĞURTCUOĞLU

Pages : 59-73

Doi:10.59313/jsr-a.1243469

View : 56 | Download : 32

Publication Date : 2023-06-30

Article Type : Research Paper

Abstract :After the flotation process of oxidized lead-zinc ores, the high amount of metal insert ignore into journalissuearticles values(especially zinc metal); in its content cannot be recovered and is stored as waste. Ore and insert ignore into journalissuearticles values(therefore); tailings are found together with gangue minerals such as calcite, and dolomite, which are oxide/carbonate minerals. Precious minerals are zinc, lead, silver, and iron-containing minerals such as smithsonite, hydrozincite, plumbojarosite, and goethite. The particle size of the sample taken from this waste was determined as d80= 78.22µm. In order to recover these ore wastes with high metal content, the dissolution of citric acid, which is a weak organic acid, in NaCl medium was investigated. When the study was examined at a concentration of 0.5 M citric acid and 200 g/L NaCl, for 1 hour at 60 ℃, 10% solids, it was found that 66.85% Zn, 56.53% Pb, 40.68% Ag, and 27.74% Fe were dissolved. According to the results of this experiment, keeping each of these parameters constant, 0.125-1 M citric acid, 50-400 g/L NaCl, 15-120 minutes leaching time, 25-95 ℃ leaching temperature, and 5-40% solids metal. The efficiency of the gain yields was tried to be determined. When the final results are examined, there are 60-80% zinc, 40-70% lead, 0.01-35% iron, and 11-83% silver recovery efficiencies. In light of these results, it is thought that industrial-scale improvements in multi-metal recovery from oxidized ore wastes may improve positive results.
Keywords : Flotation tailings, NaCl, Flotation tailings, Oxidized lead zinc, Silver, Citric acid, NaCl, Leaching

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