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金属矿山 ›› 2020, Vol. 49 ›› Issue (06): 62-67.

• 基因矿物加工专题 • 上一篇    下一篇

黄锑矿晶体及表面基因特性与可浮性关系研究

王进明 1,2,3,4 董发勤 1,3 王毓华 5 王肇嘉 2,4 杨飞华 2,4 杜明霞 1,3 傅开彬 1,3   

  1. 1. 西南科技大学环境与资源学院,四川 绵阳 621010;2. 北京建筑材料科学研究总院有限公司,北京 100041; 3.固体废物处理与资源化教育部重点实验室,四川 绵阳 621010;4. 固废资源化利用与节能建材国家重点实验室,北京 100041;5. 中南大学资源加工与生物工程学院,湖南 长沙 410083
  • 出版日期:2020-06-15 发布日期:2020-06-23
  • 基金资助:

    国家自然基金面上项目(编号:51874106),固废资源化利用与节能建材国家重点实验室平台基金项目(编号:SWR-2019-003),中国博士后科学基金资助项目(编号:2019M653837XB),西南科技大学教改项目(编号:19xn0023)。

Study on the Relationship between Flotability and Crystals and Surfaces Genetic Properties of Cervantite

Wang Jinming1,2,3,4 Dong Faqin1,3 Wang Yuhua5 Wang Zhaojia2,4 Yang Feihua2,4 Du Mingxia1,3 Fu Kaibin1,3   

  1. 1. School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621010,China; 2. Beijing Building Materials Academy of Sciences Research Co.,Ltd.,Beijing 100041,China;3. Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education,Mianyang 621010,China;4. State Key Laboratory of Solid Waste Reuse for Building Materials,Beijing 100041,China,5. School of Mineral Processing and Bioengineering, Central South University,Changsha 410083,China
  • Online:2020-06-15 Published:2020-06-23

摘要: 采用第一性原理计算了黄锑矿体相、(001)表面以及水分子在其表面吸附的结构性质,利用 XPS 和表面电位分析了黄锑矿单矿物表面特性,讨论了黄锑矿晶体结构、表面性质与可浮性之间的关系,并利用单矿物浮选试验进行了验证。结果表明,黄锑矿中氧原子的活性较强,锑原子的活性较弱,水分子容易在黄锑矿的表面吸附,导致常规阴离子捕收剂难以吸附于黄锑矿的表面,而需要通过金属阳离子活化。黄锑矿在 pH>2.4 的范围内带负电,阳离子捕收剂通过静电作用,容易在黄锑矿的表面吸附。单矿物浮选试验中,铜离子活化后的黄锑矿可以很好地被油酸钠捕收,十二胺离子也可以很好地浮选表面荷负电的黄锑矿。矿物表面基因特性与矿物可浮性有很好的对应关系。

关键词: 黄锑矿 , 基因特性 , 晶体结构 , 可浮性, 第一性原理

Abstract: First-principles theory are used to calculate the structural properties of the cervantite unite cell,the(001) surface and the adsorption of water molecules on the surface. The surface properties of the cervantite are analyzed by XPS and Zeta potential,and the relationship between the crystal structure,surface properties and flotability of cervantite are discussed. The results show that the activity of oxygen on the surface of cervantite is strong,while the activity of antimony is weak. Water molecules are strongly adsorbed on the surface of cervantite,resulting in the anion collector adsorbed on the surface of cervantite difficult,and it needs to be activated by metal ions. Cervantite is negatively charged in the range of pH> 2.4,thus cationic collector is easily adsorbed on the surface of cervantite through electrostatic action. In the single mineral flotation test,the activated cervantite by copper ion can be well collected by sodium oleate and the negative charged cervantite can also be well collected by dodecylamine ion. The genetic property of mineral surfaces have a good correspondence with mineral floatability.

Key words: Cervantite, Genetic Property, Crystal structure, Floatability, First-principle theory