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发明公开
CN104388685A 从氧化锌烟灰中回收碲铜铋的方法 有权

从氧化锌烟灰中回收碲铜铋的方法
摘要：
本发明提供了一种从氧化锌烟灰中回收碲铜铋的方法，所述方法包括以下步骤：S1、一次中性浸出；S2、一次酸性浸出；S3、二次中性浸出；S4、二次酸性浸出；S5、还原。用本发明的方法可以使氧化锌烟灰中的碲富集在还原渣中，还原渣碲的品位在20%以上，可以进行碲的回收。同时碲铜铋的回收率在90%以上。
摘要（英）：

The invention provides a method for recovering tellurium, copper and bismuth from zinc oxide soot. The method comprises the following steps of S1, carrying out primary neutral leaching; S2, carrying out primary acid leaching; S3, carrying out secondary neutral leaching; S4, carrying out secondary acid leaching; and S5, reducing. By using the method provided by the invention, tellurium in the zinc oxide soot can be enriched in reducing slag, and tellurium can be recovered when the grade of tellurium in the reducing slag is higher than 20%. Meanwhile, the recovery rate of tellurium, copper and bismuth is higher than 90%.

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