某难氰化金精矿氧化预处理试验研究

金属矿山 ›› 2012, Vol. 41 ›› Issue (04): 79-82.

某难氰化金精矿氧化预处理试验研究

洪正秀^1,2，印万忠¹，马英强¹，金创石^3,4，孙洪硕¹

1.东北大学资源与土木工程学院；2.朝鲜金策工业综合大学地质勘探学院；3.东北大学材料与冶金学院；4.朝鲜金策工业综合大学物理化学教研室

出版日期:2012-04-23 发布日期:2012-04-26
基金资助:
* 中央高校基本科研业务费项目（编号：N100601005）。

Oxidation Pretreatment Tests of A Refractory Gold Concentrate

Hong Jongsu^1,2，Yin Wanzhong¹，Ma Yingqiang¹，Kim Changsok^3,4，Sun Hongshuo¹

1.College of Resources and Civil Engineering，Northeastern University；2.College of Geoexploration Engineering，Kimchaek University of Technology，DPR of Korea；3.School of Materials and Metallurgy，Northeastern University；4.Teaching and research section of Physical Chemistry，Kimchaek University of Technology，DPR of Korea

Online:2012-04-23 Published:2012-04-26

摘要/Abstract

摘要： 某金精矿由于金矿物嵌布粒度微细且多被硫化矿物包裹而造成氰化浸出困难。为此，以过氧化氢为氧化剂，对该金精矿进行了氧化预处理试验研究，并确定了合适的氧化预处理条件为磨矿细度-48 μm占90%、矿浆浓度40 g/L、搅拌速度200 r/min、反应温度50 ℃、硫酸用量0.7 mol/L、过氧化氢用量0.3 mol/L、反应时间8 h。金精矿经氧化预处理后，氰化浸出的金浸出率从51.6%提高到了78.3%，效果显著。

关键词: 难氰化金精矿, 氧化预处理, 过氧化氢, 溶解率

Abstract: A gold concentrate is very difficult to be cyanide leached out because of the fine disseminated grain size and wrapped by sulfide of gold mineral. So taking the hydrogen peroxide as oxidizer, carried out the oxidation pretreatment to the gold concentrate and determined the suitable conditions: grinding fineness at -48 μm 90%, pulp density at 40 g/L, stirring speed at 200 r/min, reaction temperature at 50 ℃, dosage of sulphuric acid at 0.7 mol/L, dosage of hydrogen peroxide at 0.3 mol/L, reaction time at 8 h. After oxidation pretreatment to gold concentrate, the leaching rate of cyanide leached gold increases from 51.6% to 78.3%.

Key words: Refractory gold concentrate, Oxidation pretreatment, H₂O₂, Dissolution rate

洪正秀, 印万忠, 马英强, 金创石, 孙洪硕. 某难氰化金精矿氧化预处理试验研究[J]. 金属矿山, 2012, 41(04): 79-82.

HONG Zheng-Xiu, YIN Wan-Zhong, MA Ying-Qiang, JIN Chuang-Shi, SUN Hong-Shuo. Oxidation Pretreatment Tests of A Refractory Gold Concentrate[J]. Metal Mine, 2012, 41(04): 79-82.

扫码分享