东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (8): 1102-1106.DOI: 10.12068/j.issn.1005-3026.2017.08.009

• 材料与冶金 • 上一篇    下一篇

由钾长石焙烧渣的酸化溶液制备高纯Al(OH)3

刘佳囡1, 2， 黄建帝2， 吴艳1， 翟玉春1   

  1. (1. 东北大学 冶金学院， 辽宁 沈阳110819; 2. 渤海大学 化学化工学院， 辽宁 锦州121013)
  • 收稿日期:2016-02-29 修回日期:2016-02-29 出版日期:2017-08-15 发布日期:2017-08-12
  • 通讯作者: 刘佳囡
  • 作者简介:刘佳囡(1987-)，女，辽宁抚顺人，东北大学博士研究生，渤海大学讲师； 翟玉春(1946-)，男，辽宁鞍山人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51204054)；中央高校基本科研业务费专项资金资助项目(N140204011).

Preparation of High Purity Al(OH)3from the Sulfating Solution of Potash Feldspar Roasting Residue

LIU Jia-nan1,2， HUANG Jian-di2， WU Yan 1， ZHAI Yu-chun1   

  1. 1. School of Metallurgy， Northeastern University， Shenyang 110819， China; 2. School of Chemistry & Chemical Engineering， Bohai University， Jinzhou 121013， China.
  • Received:2016-02-29 Revised:2016-02-29 Online:2017-08-15 Published:2017-08-12
  • Contact: LIU Jia-nan
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摘要： 以钾长石焙烧渣的酸化溶液为原料，Na2CO3溶液为沉淀剂制备高纯Al(OH)3.实验考察了溶液终点pH值、反应温度、陈化时间、Na2CO3质量浓度对沉铝率的影响，得到优化工艺条件.采用化学成分分析，XRD，SEM，FTIR对Al(OH)3粉体进行表征.结果表明:在反应温度50℃的条件下，加入质量浓度为300g/L的Na2CO3溶液调节Al2(SO4)3溶液，使其终点pH值至4.8，控制陈化时间40min，沉铝率可达99%.得到的Al(OH)3粉体为非晶态结构，颗粒均匀，表面粗糙，有团聚现象.

关键词: 钾长石焙烧渣, 酸化溶液, Na2CO3溶液, 水解沉淀法, 高纯Al(OH)3

Abstract: Employing the sulfating solution of potash feldspar roasting residue as raw materials and Na2CO3 solution as precipitator， the high purity Al(OH)3 was prepared. The effects of the pH value at the end of precipitating Al， reaction temperature， aging time and the mass concentration of Na2CO3 solution on the precipitation rate of Al were investigated. Al(OH)3 powder was characterized by chemical component analysis， X-ray diffraction(XRD)， scanning election microscope(SEM)， and Fourier transform infrared spectroscopy (FTIR). The optimum technological conditions， which could guarantee the precipitation rate of Al more than 99%，were to keep reaction temperature at 50℃， add the Na2CO3 solution with the mass concentration of 300g/L into Al2(SO4)3 solution， control the pH value at 4.8 and the aging time for 40min. The features for the produced Al(OH)3 powder were that the crystal was amorphous， the particles were homogeneous with rough surface and the particles agglomeration occurred.

Key words: potash feldspar roasting residue;sulfating solution, Na2CO3 solution, hydrolysis method, high purity Al(OH)3

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