某含砷硫金精矿酸性氧化预处理机理及其反应动力学

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马英强^1*，盛秋月¹，印万忠^1,2，洪正秀³，唐浪峰¹

1. 福州大学紫金矿业学院，福建福州 350116；2. 东北大学资源与土木工程学院，辽宁沈阳 110819； 3. 朝鲜金策工业综合大学地质勘探学院，朝鲜 999093

收稿日期:2017-08-07修回日期:2017-10-25出版日期:2018-06-22发布日期:2018-06-06
通讯作者:盛秋月

基金资助:国家自然科学基金青年项目;福建省自然科学基金;福建省教育厅资助项目

Mechanism and Reaction Kinetics of Acidic Oxidation Pretreatment of Arsenic and Sulfur-bearing Gold Concentrate

Yingqiang MA^1*, Qiuyue SHENG¹, Wanzhong YIN^{1, 2}, Zhengxiu HONG³, Langfeng TANG¹

1. College of Zijin Mining, Fuzhou University, Fuzhou, Fujian 350116, China; 2. College of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning 110819, China; 3. College of Geoexploration Engineering, Kimchaek University of Technology, DPR 999093, Korea

Received:2017-08-07Revised:2017-10-25Online:2018-06-22Published:2018-06-06

摘要/Abstract

摘要： 针对国内某金精矿中金嵌布粒度细且大部分被黄铁矿、毒砂包裹，难以浸出的现状，采用HCl?H2O2体系对其进行酸性氧化预处理，分析了氧化预处理的机理和动力学. 结果表明，在盐酸浓度0.7 mol/L、矿浆浓度40 g/L、金精矿粒度小于48 μm占90%以上、搅拌速度400 r/min、温度60℃和H2O2浓度0.5 mol/L的条件下，金精矿中Fe和As的溶解率分别达45.9%和99.6%，利于包裹金释放和浸出. 酸性条件下，金精矿中的黄铁矿和毒砂可被H2O2氧化分解，符合产物层扩散为速率控制的固相反应收缩核模型.

引用本文

马英强盛秋月印万忠洪正秀唐浪峰. 某含砷硫金精矿酸性氧化预处理机理及其反应动力学[J]. 过程工程学报, 2018, 18(3): 522-529.
Yingqiang MA Qiuyue SHENG Wanzhong YIN Zhengxiu HONG Langfeng TANG. Mechanism and Reaction Kinetics of Acidic Oxidation Pretreatment of Arsenic and Sulfur-bearing Gold Concentrate[J]. Chin. J. Process Eng., 2018, 18(3): 522-529.

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