| 第 38 卷第 5 期 |  | Vol. 38 No. 5 | | 2008 年 10 月 | Oct 2008 |
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所屬欄目：功能材料
鐵錳型金銀礦的浸出工藝及電化學(xué)研究 |
| 賀周初1，彭愛(ài)國1，曾 亮2，余長(cháng)艷1，劉昱霖1
（1. 湖南化工研究院 國家農藥創(chuàng )制工程技術(shù)研究中心，湖南 長(cháng)沙 410007；2. 湖南大學(xué) 化學(xué)化工學(xué)院，湖南 長(cháng)沙 410082） |
| 摘 要：低品位鐵錳型金銀礦由于金銀被鐵錳等礦物包裹，傳統浸金銀的方法無(wú)法達到目的。采用兩礦加酸法對礦預先浸錳，破壞原礦物結構，降低體系的氧化還原電位，然后用硫脲同時(shí)浸出金銀，可達理想浸出效果�？疾炝肆螂逵昧�、硫酸鈉用量及氧化還原電位等對金銀浸出率的影響，優(yōu)惠條件下金銀的浸出率分別達到98.0%和45.0%。同時(shí)用電化學(xué)和配位化學(xué)的理論對硫脲浸出金銀的過(guò)程進(jìn)行了描述。 |
| 關(guān)鍵詞：金銀礦；硫脲；浸出；電化學(xué) |
| 中圖分類(lèi)號：TD951 文獻標識碼：A 文章編號：1009-9212（2008）05- 0055-03 |
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| The Leaching Process and Electrochemical Study on Iron-manganese Gold Silver Ore |
| HE Zhou-chu1，PENG Ai-cuo1，ZENG Liang2，YU Chang-yan1，LIU Yu-lin1
（1. Hunan Research Institute of Chemical Industry，National Engineering Research Center for Agrochemicals，Changsha 410007，China ；2. College of Chemistry and Chemical Engineering，Hunan University，Changsha 410082，China） |
| Abstract：The traditional gold and silver leaching method from the low grade iron-manganese gold silver ore didn't work out because gold and silver were encapsulated by iron,manganese and other minerals. It may do the trick to use two ores acid leaching method to leach manganese in advance in order to damage the original ore structure and reduce system oxidation-reduction potential, and then to use thiourea to leach gold and silver simultaneously. The effects of thiourea and sodium sulfate dosage and oxidation-reduction potential on the leaching rate were investigated in this experiment, and under the optimal conditons the leaching rate of gold and silver was 98% and 45%，respectively. The leaching process of gold and silver by thiourea was described by electrochemistry and coordination chemistry theory. |
| Key words：gold silver ore；thiourea；leach；electrochemistry |
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基金項目：國土資源部礦產(chǎn)資源綜合利用項目。
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作者簡(jiǎn)介：賀周初（1964-）男，湖南婁底人，副研究員，主要從事礦產(chǎn)資源及功能材料研究。（E-mail：hezhouchu@tom.com）
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收稿日期：2008-09-23
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