Preparation of pure SnO2 powders from tin slag of printed circuit boards waste
来源期刊：Rare Metals2014年第6期
论文作者：Bin Li Shen-Gen Zhang Kun Zhang De-An Pan Jian-Jun Tian Duan-Ting Zhang
文章页码：749 - 753
摘 要：The recycling method and principle of SnO2 from the tin slag of printed circuit boards（PCB） waste were investigated. In this study, pure SnO2 powders were obtained through a multi-step process including ball-milling, roasting, dissolving, precipitating, and pickling. The total recovery rate of tin can be up to 91 %. The SnO2 powders obtained is the single phase, and the content of SnO2 is up to 99.9 %. However, the SnO2 particles are easier to agglomerate during the precipitation process. The agglomerate SnO2 particles are about 7.778 lm in mean particle size（D50）. This preparation method presents a viable alternative for the tin slag recycling. The tin is not only recycled, but also reused directly to prepare pure SnO2 powders.
Bin Li1，Shen-Gen Zhang1，Kun Zhang2，De-An Pan1，Jian-Jun Tian1，Duan-Ting Zhang1
1. Institute for Advanced Materials and Technology, School of Materials Science and Engineering, University of Science and Technology Beijing2. Beijing Nonferrous Metals and Rare Earth Research Institute
摘 要：The recycling method and principle of SnO2 from the tin slag of printed circuit boards（PCB） waste were investigated. In this study, pure SnO2 powders were obtained through a multi-step process including ball-milling, roasting, dissolving, precipitating, and pickling. The total recovery rate of tin can be up to 91 %. The SnO2 powders obtained is the single phase, and the content of SnO2 is up to 99.9 %. However, the SnO2 particles are easier to agglomerate during the precipitation process. The agglomerate SnO2 particles are about 7.778 lm in mean particle size（D50）. This preparation method presents a viable alternative for the tin slag recycling. The tin is not only recycled, but also reused directly to prepare pure SnO2 powders.
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