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http://dx.doi.org/10.7844/kirr.2018.27.6.38

Recovery of Tin with High Purity for Dental Materials from Waste Tin oxide by Reduction and Electro Refining  

Jung, Hyun-Chol (Department of Bio-Nano System Engineering, Chonbuk National University)
Kim, Sang-Yeol (Department of Materials Science & Engineering, Chungnam National University)
Lee, Min-Ho (Department of Dental Biomaterials and Institute of Biodegradable Material, Institute of Oral Bioscience and School of Dentistry (BK21 Plus Program), Chonbuk National University)
Publication Information
Resources Recycling / v.27, no.6, 2018 , pp. 38-43 More about this Journal
Abstract
In this study, using electro-refining process and methane gas reduction, we performed studying the recovery of tin with high purity from waste tin oxide had used as a electrode rod of ceramic furnace which occurred during glass production process. We recovered the crude tin of 99% purity from a methane gas reduction process and controlled a little amount of impurities. When the electrolytic refining condition was a current density of $60A/dm^2$ and the sulfuric acid concentration of 0.75 mol, 96.8% of recovered tin (99.979% of purity) were recovered during the electrolytic refining. We confirmed that toxic impurities such as Pb, Sb included in electrode rod. could be controlled.
Keywords
waste Tin; gas reduction; electro refining; electrolyte; Tin recovery;
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