Pyrometallurgical Recovery of Indium from Dental Metal Recycling Sludge by Chlorination Treatment with Ammonium Chloride
Pyrometallurgical Recovery of Indium from Dental Metal Recycling Sludge by Chlorination Treatment with Ammonium Chloride
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DOI：
10.2320/matertrans.m2010020
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发表时间：
2010-06
影响因子：
1.2
通讯作者：
O. Terakado;Takashi Saeki;Ryoji Irizato;M. Hirasawa
中科院分区：
文献类型：
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作者：
O. Terakado;Takashi Saeki;Ryoji Irizato;M. Hirasawa
本文研究了从含铟较高的牙科金属回收污泥中选择性回收铟的氯化新工艺。该工艺以氯化铵、氯化铵为氯化试剂。结果表明，在惰性气氛下，将污泥与氯化铵的混合物加热至400℃，可成功地以挥发性氯化铟的形式从污泥中回收铟。为了获得较高的工艺效率，考察了工艺参数如氯化铵的组成等对工艺效率的影响。
In the present paper we address the novel chlorination process for recovery of indium selectively from dental metal recycling sludge which contains considerably high amount of indium. The process is based on the utilization of ammonium chloride, NH4Cl, as chlorination reagent. It was found that indium could be successfully recovered from the sludge in the form of volatile indium chloride by heating the mixture of sludge and NH4Cl at the temperature of 400°C under inert atmosphere. The influence of process parameters, such as composition of NH4Cl, was investigated in order to achieve high process efficiency.