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 (9): 1315-1318.DOI: -

• 论著 • 上一篇    下一篇

由除杂铝渣碱溶碳分制备高纯Al(OH)_3

申晓毅;常龙娇;王佳东;翟玉春;   

  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 出版日期:2012-09-15 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N110402012);;

Preparation of high purity Al(OH)3 from aluminous slag using alkali extraction and carbonation

Shen, Xiao-Yi (1); Chang, Long-Jiao (1); Wang, Jia-Dong (1); Zhai, Yu-Chun (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Online:2012-09-15 Published:2013-04-04
  • Contact: Zhai, Y.-C.
  • About author:-
  • Supported by:
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摘要： 以红土镍矿酸浸液的除杂铝渣为原料,经碱溶、分步碳分制备高纯Al(OH)3粉体,实验考察了除杂铝渣碱溶温度、碱溶pH值与除杂铝渣中铝溶出率的关系及碳分终点pH值、碳分温度与沉铝率之间的关系.实验得到的适宜碱溶条件为pH值14、温度90℃、时间10 min;碳分条件为碳分终点pH值9、碳分温度75℃.采用XRD,SEM,化学成分分析对所得Al(OH)3粉体进行了表征.结果表明Al(OH)3粉体晶型发育良好,颗粒不规则,表面粗糙,结构松散、多孔.

关键词: 除杂铝渣, 碱溶, 分步碳分, 高纯Al(OH)3粉体

Abstract: Taking aluminous slag of clay nickel ore acid soaking liquid as raw material, high purity Al(OH)3 powder was successfully prepared through alkali extraction and split-step carbonation. The influences of the alkali extraction temperature and pH value on the Al dissolution rate of aluminous slag, and the pH value of carbonation end and carbonation temperature on the Al precipitation rate were also investigated, respectively. The appropriate alkali extraction conditions were pH value of 14, temperature of 90°C and time of 10 min, and the carbonation conditions were the pH value of the carbonation end of 9 and temperature of 75°C, respectively. The Al(OH)3 powder was characterized using XRD, SEM and chemical component analysis. The results indicate that the crystal of Al(OH)3 powder grows well, and the particles of Al(OH)3 are irregular with rough surface, loose and porous structure.

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