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首页> 外文期刊>Journal of Advanced Science >SDD-EDSと多変量イメージ解析技術を用いた銅複合化合物からの効果的な製錬条件の検討
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SDD-EDSと多変量イメージ解析技術を用いた銅複合化合物からの効果的な製錬条件の検討

机译：使用SDD-EDS和多元图像分析技术检查铜复合化合物的有效精炼条件

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摘要

Copper-bearing dross generated in lead metal smelting operations is composed of very complex compounds which include Pb, Sn and Sb. The presence of these elements makes the dross difficult to process. The copper compounds also include valuable metals and rare earth elements, therefore an efficient refining technology is required. In previous works, we have shown that evaluating the dross phases by using both fast Silicon drift detector technology (Thermo Scientific UltraDry) and multivariate statistical component analysis (Thermo Scientific COMPASS) is very effective. In this work, we investigated the refining heat treatment conditions in the process of the copper-bearing dross. The results of the COMPASS phase analysis showed that a Cu-Sn alloy was the main copper-bearing phase generated in the dross when small amounts of oxygen were introduced during the heat treatment process. Conversely, under high oxygen conditions during the process CuO is generated as the principal copper-bearing dross component. The leaching rate of Cu was about 50% after sulfuric acid leaching for the unprocessed dross. The leaching rate of Cu increased to more than 95% for the processed dross in which the principal component was CuO. Using these analysis results, we were able to rapidly and accurately determine the efficiency improvement of the copper refining process.
机译：铅金属熔炼操作中产生的含铜浮渣由非常复杂的化合物组成，包括Pb，Sn和Sb。这些元素的存在使渣难以加工。铜化合物还包含有价值的金属和稀土元素，因此需要有效的精炼技术。在以前的工作中，我们已经表明，使用快速硅漂移检测器技术（Thermo Scientific UltraDry）和多变量统计分量分析（Thermo Scientific COMPASS）评估浮渣相非常有效。在这项工作中，我们研究了含铜浮渣过程中的精炼热处理条件。 COMPASS相分析的结果表明，当在热处理过程中引入少量氧气时，Cu-Sn合金是锡渣中产生的主要含铜相。相反，在过程中的高氧条件下，会生成CuO作为主要的含铜浮渣成分。对于未加工的浮渣，硫酸浸出后，Cu的浸出率约为50％。对于主要成分为CuO的加工后的锡渣，Cu的浸出率提高到95％以上。使用这些分析结果，我们能够快速而准确地确定铜精炼工艺的效率提高。

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