Recovery of platinum using magnesium vapor
Recovery of platinum using magnesium vapor
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使用镁蒸气回收铂
DOI：
10.1557/jmr.2003.0272
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Masafumi Maedaaff
中科院分区：
文献类型：
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作者：
T. Okabe;Sachiko Yamamoto;Y. Kayanuma;Masafumi Maedaaff
为了开发一种有效的工艺从废料中回收贵金属，我们研究了一种新的铂提取工艺，该工艺使用镁蒸气形成合金并用水溶液连续浸出。纯铂片与镁蒸气在873 ~ 1173 K恒温反应3 h，合成了Mg-Pt合金样品。然后在室温下将所得Mg-Pt合金溶解在王水或HCl水溶液中。采用常规沉淀法从浸出液中回收铂，并对各工序所得铂进行了化学分析。结果表明，94%的铂被回收。Mg蒸气处理后，在王水中保持1 h时，100%的铂溶解，而在王水中保持4 h时，仅25%的未处理的纯铂溶解。
To develop an effective process for the recovery of precious metals from scrap, we investigated a new platinum extraction process using alloy formation by magnesium vapor and successive leaching with an aqueous solution. Pure platinum plates were reacted with magnesium vapor at constant temperatures ranging between 873 and 1173 K for 3 h, and Mg–Pt alloy samples were synthesized. The obtained Mg–Pt alloy was then dissolved in aqua regia or in an aqueous HCl solution at room temperature. Platinum was recovered from the leaching solution by conventional precipitation technique, and the platinum obtained by each process was analyzed chemically. It was found that 94% of the platinum was recovered by this process. After Mg vapor treatment, 100% of the platinum was dissolved when kept in aqua regia for 1 h, whereas only 25% of untreated pure platinum was dissolved when kept in aqua regia for 4 h.