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铬酸钠晶体中铝酸钠杂质的分离

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邹兴, 张懿. 铬酸钠晶体中铝酸钠杂质的分离[J]. 环境化学, 2000, 19(2): 149-153.
引用本文: 邹兴, 张懿. 铬酸钠晶体中铝酸钠杂质的分离[J]. 环境化学, 2000, 19(2): 149-153.
shu
Zou Xing, Zhang Yi. THE SEPARATION OF SODIUM ALUMINATE IMPURITY FROM SODIUM CHROMATE IN CRYSTAL[J]. Environmental Chemistry, 2000, 19(2): 149-153.
Citation: Zou Xing, Zhang Yi. THE SEPARATION OF SODIUM ALUMINATE IMPURITY FROM SODIUM CHROMATE IN CRYSTAL[J]. Environmental Chemistry, 2000, 19(2): 149-153.
shu

铬酸钠晶体中铝酸钠杂质的分离

  • 1.

    中国科学院化工冶金研究所, 北京, 100080;

  • 2.

    北京科技大学理化系, 北京, 100083

THE SEPARATION OF SODIUM ALUMINATE IMPURITY FROM SODIUM CHROMATE IN CRYSTAL

  • 1.

    Institute of Chemiscal Metallurgy, Chinese Academy of Sciences, Beijing, 100080;

  • 2.

    University of Science and Technology of Beijing, Beijing, 100083

  • 摘要: 重点研究了含有杂质氢氧化钠和铝酸钠的铬酸钠晶体中铬酸钠和铝酸钠溶解动力学.洗涤一定组成的混合晶体的结果表明,两者在溶解动力学方面具有很大差别,铬酸钠能迅速达到溶解平衡,而铝酸钠极易形成过饱和溶液,且有一定的稳定性。结果还表明,用纯水洗涤混合晶体时,铝酸钠的过饱和浓度受温度影响较小,而用含一定量的氢氧化钠、铬酸钠和铝酸钠的溶液洗涤时,铝酸钠的过饱和浓度受温度影响较大.
    Abstract: The dissolution dynamics of sodium aluminate and sodium chromate in sodium chromate crystal containing sodium hydroxide and sodiuim aluminate impurities has been studied emphatically. The results show that there is a great difference in dissolution dynamics between them. The dissolution equilibrium of sodium chromate can be attained quickly, sodium aluminate can be dissolved quickly and form saturated solution with certain stability. The results show further that temperature has a little effect on the sodium aluminate saturated concentration when mixed crystal is washed by pure water and has a great effect on that when mixed crystal is washed by solution containing a certain amount of sodium hydroxide, sodium aluminate and sodium chromate.
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出版历程
  • 收稿日期:  1999-05-20
邹兴, 张懿. 铬酸钠晶体中铝酸钠杂质的分离[J]. 环境化学, 2000, 19(2): 149-153.
引用本文: 邹兴, 张懿. 铬酸钠晶体中铝酸钠杂质的分离[J]. 环境化学, 2000, 19(2): 149-153.
shu
Zou Xing, Zhang Yi. THE SEPARATION OF SODIUM ALUMINATE IMPURITY FROM SODIUM CHROMATE IN CRYSTAL[J]. Environmental Chemistry, 2000, 19(2): 149-153.
Citation: Zou Xing, Zhang Yi. THE SEPARATION OF SODIUM ALUMINATE IMPURITY FROM SODIUM CHROMATE IN CRYSTAL[J]. Environmental Chemistry, 2000, 19(2): 149-153.
shu

铬酸钠晶体中铝酸钠杂质的分离

  • 1.  中国科学院化工冶金研究所, 北京, 100080;
  • 2.  北京科技大学理化系, 北京, 100083
  • 收稿日期:  1999-05-20

摘要: 重点研究了含有杂质氢氧化钠和铝酸钠的铬酸钠晶体中铬酸钠和铝酸钠溶解动力学.洗涤一定组成的混合晶体的结果表明,两者在溶解动力学方面具有很大差别,铬酸钠能迅速达到溶解平衡,而铝酸钠极易形成过饱和溶液,且有一定的稳定性。结果还表明,用纯水洗涤混合晶体时,铝酸钠的过饱和浓度受温度影响较小,而用含一定量的氢氧化钠、铬酸钠和铝酸钠的溶液洗涤时,铝酸钠的过饱和浓度受温度影响较大.

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