| 酸浸预处理提高金矿焙烧烟尘中金浸出率的研究 |
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| 引用本文： | 雷占昌,韩斯琴图,蒋常菊.酸浸预处理提高金矿焙烧烟尘中金浸出率的研究[J].矿冶工程,2019,39(3):107-109. |
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| 作者姓名： | 雷占昌 韩斯琴图 蒋常菊 |
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| 作者单位： | 青海省核工业地质局检测试验中心,青海 西宁,810008;青海省核工业地质局检测试验中心,青海 西宁,810008;青海省核工业地质局检测试验中心,青海 西宁,810008 |
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| 摘 要： | 为提高难处理金矿焙烧烟尘中金的氰化浸金率,采用强酸酸浸对其进行预处理,考察了酸浸液固比、温度、时间及搅拌速度对氰化过程中金浸出率的影响,确定了最佳酸浸条件为:酸浸液固比0.98∶1、温度85 ℃、时间2 h、搅拌速度500 r/min,此时烟尘的氰化浸金率为91.04%。
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| 关 键 词： | 难处理金矿 烟尘 酸浸 氰化浸出 金 |
| 收稿时间： | 2018-12-17 |
Pretreatment of Acid Leaching for Increasing the Leaching Rate of Gold from Refractory Gold Ore Roasting Dust |
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| LEI Zhan-chang,HAN SI Qin-tu,JIANG Chang-ju.Pretreatment of Acid Leaching for Increasing the Leaching Rate of Gold from Refractory Gold Ore Roasting Dust[J].Mining and Metallurgical Engineering,2019,39(3):107-109. |
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| Authors: | LEI Zhan-chang HAN SI Qin-tu JIANG Chang-ju |
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| Affiliation: | Testing and Experiment Center, Geological Bureau of Qinghai Provincial Nuclear Industry, Xining 810008, Qinghai, China |
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| Abstract: | The dust from refractory gold ore roasting process was leached with strong acid for pretreatment, in order to improve the cyanide leaching rate of gold from the dust. The influences of liquid-to-solid ratio, temperature, time and agitation speed of acid leading on the gold leaching rate by cyanidation were investigated in the experiment, and the optimum acid leaching condition for the pretreatment was determined as follows: the liquid-to-solid ratio of 0.98∶1, leaching temperature of 85 ℃, leaching time of 2 h and agitation speed of 500 r/min. It was shown that the cyanide leaching rate of gold from dust was 91.04% under such conditions. |
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| Keywords: | refractory gold ore dust acid leaching cyanide leaching gold |
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