共查询到18条相似文献,搜索用时 93 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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贫细微含金褐铁矿石硫脲法浸金研究 总被引:6,自引:2,他引:4
文中着重研究了浸前中温焙烧对盆细微含金褐铁矿石硫脲法浸金的影响。研究结果表明:中温焙烧不但可提高硫脲浸金速度和金的浸出率,而且可使硫脲的单耗降低5 ̄6倍,使每吨矿石的硫脲用量降至800g/t矿石;同时,对其机理进行了详细的研究和探讨。 相似文献
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含硫金矿的焙烧处理及硫脲浸金研究 总被引:6,自引:1,他引:5
研究了含硫金矿经焙烧预处理后,以酸性硫脲溶液浸金的条件。结果表明,在助溶剂Re 1存在下,低品位的原生硫化金矿及高品位的浮选金精矿均可得到高于95 % 的金浸出率。得到了焙烧预处理、硫脲浸出难处理金矿的完整工艺,并试图解释硫化矿物的成分和结构是影响硫脲浸金效率的重要因素 相似文献
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本文探讨了一种使用温和的硫脲浸金氧化剂的浸金工艺,该氧化剂的特点是适用pH范围宽,对硫脲的不可逆氧化小,与常规硫脲浸出法相比,该工艺的浸出指标相当,但操作方便,经济成本即硫脲消耗下降。 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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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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