共查询到18条相似文献,搜索用时 452 毫秒
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磁场强化硫脲浸金试验研究 总被引:9,自引:2,他引:7
在分析传统硫脲浸金技术存在的主要问题基础上,提出了采用磁场强化硫脲浸金过程,分析了浸金时间、硫脲用量、酸度以及磁化方式和磁化时间对金浸出率的影响,进行了常规硫脲浸金和磁场强化硫脲浸金的对比试验。 相似文献
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采用硫脲法浸金工艺对某难处理氰化尾渣进行浸出试验。结果表明,在液固比3∶1,pH=1~1.5,硫脲浓度2kg/t,温度60℃,浸出6h时,金浸出率可达82.30%。 相似文献
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硫脲提金技术发展现状 总被引:4,自引:0,他引:4
介绍了硫脲提金技术发展现状,主要介绍了硫脲提金原理、矿石预处理方法、从硫脲浸出液中回收金的方法,也介绍了提高硫脲提金效率的可行性方法及硫脲提金技术的发展趋势。 相似文献
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Jinshan Li 《Mineral Processing and Extractive Metallurgy Review》2013,34(3):177-214
Since the initial report of thiourea as a complexing reagent for gold leaching, considerable research has been directed toward the use of thiourea as an alternative to cyanide for gold extraction from different auriferous mineral resources. At the same time, some fundamental investigations of the system have been reported. In this article, a review of both applications and fundamental research is made, including a review of the recent results from laboratory studies at the University of Utah. Recent research results demonstrate that thiourea decomposition is quite slow in the presence of ferric sulfate for simple solutions. Ferric sulfate and formamidine disulfide (FDS) are effective oxidants with fast kinetics. No passivation of the gold surface is observed in simple acidic solutions. However, in actual leaching systems, some sulfide minerals significantly catalyze the redox reaction between thiourea and ferric ion, causing high thiourea consumption if ferric ion is present in excess. The presence of copper has a deleterious influence on this leaching system. 相似文献
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以某厂湿法炼锌浸出渣浮选所得的银精矿为原料,用硫脲对其进行络合浸出,并用锌粉分步还原回收浸出液中的银和铜。结果表明,银浸出率保持在90%左右,锌粉分步还原可得到含银80%左右的银绵和含铜60%左右的铜渣。银绵经火法处理得粗银锭,再经电解可得精银,二次还原后液可直接返回浸出流程,可使硫脲得到循环利用。经生产中试,该工艺可应用于工业生产并取得较好的经济效益。 相似文献
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硫化矿的浸金研究—酸性硫脲溶液体系 总被引:1,自引:0,他引:1
本文研究了在用酸性硫脲溶液从硫化矿中浸金时,硫酸铁浓度、硫脲浓度、酸度、温度、搅拌速度、浸取时间、矿石粒度及固液比等实验条件对金、银浸出率的影响。并对所得结果进行了讨论。 相似文献