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Gold Science and Technology ›› 2015, Vol. 23 ›› Issue (4): 97-101.doi: 10.11872/j.issn.1005-2518.2015.04.097

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Leaching of Au from Micro-disseminated Gold Ore in Thiourea-Thiocyanate Solutions

TANG Lijing，TANG Yun，LI Jiaojiao，YANG Dianqi   

  1. Mining College，Guizhou University
  • Received:2015-06-21 Revised:2015-07-16 Online:2015-08-28 Published:2015-11-16

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Abstract:

The analysis results of ore chemical composition at a certain micro-disseminated gold demonstrated that gold grade was 3.51×10-6，content of SiO2 was as high as 71.88%.In addition，the content of organic of carbon even reached up to 2.51%.After analyzing the XRD and phase of gold，it was found that the ore main minerals were primary composed with quartz，calcite and sulfide.According to the characters of the ore，when employing the thiourea or thiocyanate leaching directly，low leaching rate can be obtained.When employing the thiourea-thiocyanate leaching，better leaching rate can be obtained.Using factorial experimental，paid attention to the amount of thiocyanate，thiourea and ferric sulfate.The results showed that the amount of ferric sulfate and thiocyanate dosage interaction significantly.Then optimize the leaching time，pH，liquid-solid ratio.The test results showed that under the conditions that roasting temperature is 600 ℃ and roasting time is 60 min，the gold leading rate of 75.03% was achieved when pH is 1.06，the dosage of ferric sulfate，thiocyanate and  thiourea are 14 kg/t，10 kg/t and 2 kg/t respectively，the leading time is 7 h，liquid-solid ratio is 3∶1.

Key words: micro-disseminated gold ore, thiourea, thiocyanate, leaching

CLC Number: 

  • TF831

［1］ 邱廷省，夏青.难选金矿细菌预处理技术理论与实践［J］.江西理工大学学报，2004，25（2）：6-11.
［2］ 王在谦，唐云，张覃，等.微细粒碳质金矿碱性热压预处理脱碳试验研究［J］.黄金，2014，35（3）：52-55.
［3］ 毕凤琳，冯玉华.含砷锑细脉浸染型金矿石全泥氰化条件优化控制试验研究［J］.黄金科学技术，2013，21（5）：127-131.
［4］ 郝家栩.黔西南微细浸染型金矿构造控矿与规律研究［D］.贵阳：贵州大学，2007.
［5］ 沈智慧，张覃，王贤晨，等.混合非氰药剂对微细浸染型金矿浸出的影响研究［J］.矿冶工程，2015，35（1）：72-75.
［6］ Feng D，van Deventer J S J.Effect of thiosulphate salts on ammoniacal thiosulphate leaching of gold［J］.Hydrometallurgy，2010，105（1/2）：120-126.
［7］ 朱忠泗.硫脲类非氰化浸金药剂的制备及应用研究［D］.长沙：中南大学，2014.
［8］ 李超，李宏煦，杨勰，等.某难浸金矿的次氯酸盐法直接浸金试验研究［J］.黄金科学技术，2014，22（4）：108-112.
［9］ 唐立靖，唐云，许正波.难选金矿微波预处理边磨边浸非氰化试验研究［J］.黄金科学技术，2015，23（1）：85-89.
［10］ Li J S，Safarzadeh M S，Moats M S，et al.Thiocyante hydrometallurgy for the recovery of gold.PartⅡ：The leaching kinetics［J］.Hydrometallurgy，2012，113-114：10-18.
［11］ 杨喜云，刘政坤，郭孔彬，等.硫脲—硫氰酸钠浸出难处理金矿及浸出剂的稳定性［J］.中国有色金属学报，2014，24（8）：2164-2170.
［12］ Yang X Y，Moats M S，Miller J D，et al.Thiourea-thiocyanate leaching system for gold［J］.Hydrometallurgy，2011，106（1/2）：58-63.
［13］ 许时.矿石可选性研究［M］.第2版.北京：冶金工业出版社，2007.
［14］ 宋岷蔚，刘菁，俞海平.硫氰酸铵法提金工艺研究［J］.矿冶工程，2013，33（2）：84-87.
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