东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (12): 1750-1753.DOI: -

• 论著 • 上一篇    下一篇

黄铁矿在氧化镍矿焙烧氨浸过程中的作用

都兴红;刘慧;景涵;娄太平;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展计划项目(2007CB613503)

Effect of pyrite in roasting-ammonium leaching of nickel oxide ore

Du, Xing-Hong (1); Liu, Hui (1); Jing, Han (1); Lou, Tai-Ping (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Du, X.-H.
  • About author:-
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摘要： 为了明确黄铁矿在氧化镍矿还原焙烧氨浸过程中的作用机理,通过XRD和化学分析等方法分析还原过程中的物相变化和浸出效果.结果表明,氧化镍矿添加少量黄铁矿后,焙砂中的镍组分会以镍黄铁矿的形式存在,镍黄铁矿在NH3-(NH4)2CO3体系中被氧化并最终以硫酸镍氨络合物的形式被浸出,实现镍的富集与分离.

关键词: 黄铁矿, 氧化镍, 焙烧氨浸, 镍黄铁矿

Abstract: The objective of this study is to confirm the effect and action mechanism of pyrite in the process of roasting-ammonium leaching of nickel oxide ore. XRD and chemical analysis are used to analyze the phase change and the leaching effect. The results show that, after adding a little pyrite in nickel oxide ore, nickel exists as pentlandite in the calcined product. Pentlandite is then oxidized and leached in the form of ammonium nickel sulfate complex in the system of NH3-(NH4)2CO3, and the enrichment and separation of nickel is thereby realized.

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