NEW PLATINUM EXTRACTION PROCESS USING METAL VAPOR TREATMENT

机译：金属蒸气处理的白金萃取新工艺

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A new platinum (Pt) extraction process by an alloy formation technique using calcium (Ca) or magnesium (Mg) vapor and successive leaching with an aqueous solution was investigated. Pure Pt metal plate or powder were contacted with Ca or Mg vapor at constant temperatures ranging between 873 and 1173 K for 3 to 12 hours, and Ca-Pt or Mg-Pt compounds were synthesized. The interaction of Pt and reactive metal vapor was studied. The obtained compounds were then dissolved in an aqueous HC1 solution or in aqua regia at room temperature. Pt was recovered from the leaching solution by a conventional precipitation technique, and the amount of Pt recovered by precipitation was evaluated. After the vapor treatment, 100% of Pt in the compound was dissolved in aqua regia for 1 h, whereas only 14% of the untreated pure Pt was dissolved after the reaction with aqua regia for 4 h.

机译：通过使用钙（Ca）或镁（Mg）蒸气的合金形成技术研究了一种新的铂（Pt）提取工艺，并采用水溶液进行了连续浸出。将纯Pt金属板或粉末与Ca或Mg蒸气在873和1173 K之间的恒定温度下接触3至12个小时，合成了Ca-Pt或Mg-Pt化合物。研究了铂与活性金属蒸气的相互作用。然后将获得的化合物在室温下溶于HCl水溶液或王水中。通过常规的沉淀技术从浸出溶液中回收Pt，并评估通过沉淀回收的Pt量。蒸气处理后，化合物中的100％Pt溶解在王水中1小时，而与王溶液反应4小时后，只有14％的未处理纯Pt溶解。

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来源
《Global Symposium on Recycling, Waste Treatment and Clean Technology; 20040926-29; Madrid(ES)》|2004年|P.1841-1848|共8页
会议地点 Madrid(ES)
作者
Yoshihiro Kayanuma; Toru H. Okabe; Yoshitaka Mitsuda; Masafumi Maeda;
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作者单位

Institute of Industrial Science,The University of Tokyo,4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan;

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原文格式 PDF
正文语种 eng
中图分类废物处理与综合利用;
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NEW PLATINUM EXTRACTION PROCESS USING METAL VAPOR TREATMENT

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