中国科技核心期刊
美国化学文摘社（CAS）数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
贵州某微细浸染型金矿石氰化尾渣提金试验研究
- 杨琳娜|杨连涛|程伟|宋杨|贾玉娟
- 作者单位：
- 贵州大学矿业学院|贵州大学矿业学院|贵州大学矿业学院&喀斯特地区优势矿产资源高效利用国家地方联合工程实验室&贵州省非金属矿产资源综合利用重点实验室|贵州大学矿业学院|贵州大学矿业学院
基金项目：
- 贵州省科技创新人才团队建设专项（黔科合平台人才〔2018〕5613）；贵州省科学技术基金项目（黔科合J字〔2015〕2048号）；贵州大学引进人才科研项目（贵大人基合字〔2014〕58号）
详细信息：
- 作者简介：
- 杨琳娜（1996—），女，四川资阳人，大学本科，主要研究方向为矿产资源综合利用;贵阳市花溪区,贵州大学矿业学院，550025；E-mail：yanglnyln@163.com
- 通讯作者：
- E-mail：wcheng1@gzu.edu.cn,13595134046
- 此文档没有上传！
Experimental study on gold extraction from cyanidation leaching residue of a micro-dissemination type gold ore from Guizhou
- English Author：
- Mining College of Guizhou University|Mining College of Guizhou University|Mining College of Guizhou University&National & Local Joint Laboratory of Engineering forEffective Utilization of Regional Mineral Resources from Karst Areas&Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources|Mining College of Guizhou University|Mining College of Guizhou University
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
贵州某微细浸染型金矿石氰化尾渣金品位为2.06 g/t，回收利用其中的金，减少尾渣堆存，具有重要的资源和环境意义。通过XRD及电子探针等分析方法对氰化尾渣中金的分布与嵌布特征进行分析，采用氧化焙烧—硫脲浸金工艺回收氰化尾渣中的金，并对试验条件进行优化。结果表明：在氧化焙烧温度500 ℃、焙烧时间1.5 h，硫脲用量37.50 kg/t、FeCl3用量11.25 kg/t、pH=4、液固比4∶1、常温(22 ℃)常压浸出1 h条件下，氰化尾渣金浸出率达92.18 %。该研究为微细浸染型金矿石氰化尾渣提金技术的工业化应用提供参考。
关键词:
微细浸染型金矿石；氰化尾渣；金；氧化焙烧；硫脲
Abstract:
The gold grade of the cyanidation leaching residue of a micro-dissemination type gold ore from Guizhou is 2.06 g/t.It is environmentally and economically important to recover the gold from it and reduce residue storage.XRD and electron probe are used to analyze the gold distribution and occurrence characteristics,oxidative roasting-thiourea leaching process is used to recover the gold from cyanidation leaching residue,and the experimental conditions are optimized.The results show that the leaching rate of the gold could reach as high as 92.18 % when the cyanidation leaching residue is roasted at 500 ℃ for 1.5 h,and then reacts with 37.50 kg/t thiourea,11.25 kg/t FeCl3,and is leached at room temperature (22 ℃) and atmospheric pressure for 1 h with the pH value 4 and the liquid-solid ratio 4∶1.The research results can provide a scientific reference for the industrial application of gold extraction technology to cyanidation leaching residue of a micro-dissemination type gold ore.
Keywords:
micro-dissemination type gold ore; cyanidation leaching residue; gold; oxidative roasting; thiourea
