东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (10): 939-941.DOI: -

• 论著 • 上一篇    下一篇

种分过程添加剂对氢氧化铝粒度强度的影响

赵苏;毕诗文;杨毅宏;谢雁丽   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2003-10-15 发布日期:2013-06-24
  • 通讯作者: Zhao, S.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(59974007);;国家重点基础研究发展规划项目(G1999066490 2)·

Effect of additives on particle size and strength of aluminum hydroxide decomposed with seed crystal used

Zhao, Su (1); Bi, Shi-Wen (1); Yang, Yi-Hong (1); Xie, Yan-Li (1)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2003-10-15 Published:2013-06-24
  • Contact: Zhao, S.
  • About author:-
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摘要： 在铝酸钠溶液的种分过程中,添加剂的应用可以提高产品氢氧化铝的粒度、强度·选出了增大氢氧化铝粒度的添加剂H1,I,F,G,提高氢氧化铝强度的添加剂L,I,F,G,H2,H3,H5;研究了氢氧化铝粒度与强度的关系·结果表明,氢氧化铝颗粒在45～105μm的个数百分数越大,氢氧化铝颗粒分布越均匀,强度就越好;探讨了添加剂的作用机理,即表面活性剂分子的亲油基在氢氧化铝粒子表面形成油层,将氢氧化铝细粒子紧密粘结在一起,使氢氧化铝的粒度与强度增大·

关键词: 添加剂, 氢氧化铝, 粒度, 强度, 铝酸钠溶液, 分解

Abstract: In the decomposition process of sodium aluminate solutions with seed crystal added into it, first relevant additives can play an important role in improving the particle size and strength of product, i.e., aluminate hydroxide. The additives used were divided into two kinds: one was used to increase the product's particle size, including the additives H1, F, I and G, the other was to improve the strength, including L, I, F, G, H2, H3 and H5. The relationship between the particle size and strength of the product was investigated. The results show that the higher the percentage of number of particles with size from 45 to 105 μm is, the higher the strength will be, as well as more even particle distribution. The mechanism of additives as discussed revealed that on the surface of A1(OH)3 particles the oleophilic group of surface active agent will form oil films to bind together fine A1(OH)3 particles closely so as to increase both the particle size and strength.

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