Recovery of Gold and Iron from the Cyanide Tailings by Magnetic Roasting

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• 作者：Liu Bailong ; Zhang Zhaohui ; Li Linbo ; Wang Yujie
• 关键词：roasting ; cyanide tailings ; leaching rate of gold ; magnetic susceptibility of iron
• 刊名：Rare Metal Materials and Engineering
• 出版年：September, 2013
• 年：2013
• 卷：42
• 期：9
• 页码：1805-1809
• 全文大小：282 K

文摘

The pretreatment of the cyanide tailing by roasting and its effect on the followed comprehensive recovery of valuable metals were investigated. The results indicate that the leaching rate of gold reaches 46.14%, the magnetic susceptibility of iron is up to 86.27% when the roasting temperature is 750 掳C, the roasting time is 1.25 h, and the dosage of reductant is 6%. Combined with mineral structure and principle of magnetic roasting, the promoting mechanism of gold leaching by roasting was explored. The gold exposed through the magnetic roasting is the foremost improvement for high leaching rate of gold.