无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2013, Vol. 45 ›› Issue (8): 49-.

• 论文 • 上一篇    下一篇

尾矿砂的酸溶特性与镍的浸出研究

孙 冲1,陈学安1,常新安1,肖卫强2,王少华3,陈延军1   

  1. 1.北京工业大学材料科学与工程学院,北京 100124;2.北京工业大学固体微结构与性能研究所;3.金川集团公司化工厂
  • 出版日期:2013-08-10 发布日期:2013-08-14

Study on acid leaching conditions of Ni from tailings

Sun Chong1,Chen Xuean1,Chang Xin′an1,Xiao Weiqiang2,Wang Shaohua3,Chen Yanjun1   

  1. 1.School of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China;2.Institute of Microstructure and Property of Advanced Materials,Beijing University of Technology;3.Chemical Plant,Jinchuan Group Co.,Ltd.
  • Online:2013-08-10 Published:2013-08-14

摘要: 通过粉末X射线衍射(XRD)分析了金川尾矿砂的物相组成和脉石矿物的相对含量,利用热力学原理计算并分析了矿物在硫酸中的溶解难易程度。通过正交设计与实验, 得到浸出镍的最佳工艺条件:酸矿质量比为 0.9∶1、液固质量比为2∶1、反应温度为90 ℃、反应时间为4 h。在此酸浸条件下,尾矿砂中镍的浸出率可达93.3%,而蛇纹石和白云石可以完全溶解,并产生大量无定形二氧化硅。

关键词: 尾矿砂, 热力学, 酸浸,

Abstract: The phase composition and relative content of gangue minerals of tailings from Jinchuan Company were characteri- zed by powder X-ray diffraction(XRD).The dissolution conditions of minerals in sulfuric acid were thermodynamically calculated and analyzed.Then,the optimum technological conditions of leaching of Ni from the tailings were obtained by orthogonal experiments: mass ratio of sulfuric acid to mineral was 0.9∶1,mass ratio of liquid/solid was 2∶1,reaction temperature was 90 ℃,and reaction time was 4 h.Under these conditions,the leaching rate of Ni could reach 93.3%,serpentine and dolomite can be completely dissolved and a large amount of amorphous SiO2 were generated.

Key words: tailings, thermodynamics, acid leaching, Ni

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