| 金属氧化物在氧化铝生产过程中的应用 |
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| 引用本文： | 孙洪涛 张述伟 马纯聪 赵苏. 金属氧化物在氧化铝生产过程中的应用[J]. 中国材料科技与设备, 2006, 3(2): 13-15 |
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| 作者姓名： | 孙洪涛 张述伟 马纯聪 赵苏 |
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| 作者单位： | [1]大连理工大学化工学院,辽宁大连116024 [2]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168 |
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| 摘 要： | 综述了CaO、MgO、BaO等金属氧化物在氧化铝生产过程中的作用。添加CaO消除了矿浆中不利于氧化铝溶出的因素，使氧化铝溶出速率加快；MgO消除了钛矿物的危害，并使赤泥中硅钠比有所下降；BaO可以同时除去溶液中的SO4^2-、CO3^2-和SiO3^2-离子，其添加量可根据溶液中硫含量多少灵活调节，一般为70％左右最好，而且两次加入可提高BaO利用率。
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| 关 键 词： | 金属氧化物 拜耳法 氧化铝 铝酸钠溶液 |
The Roles of Metallic Oxide in the Proceed of Alumina Production |
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| SUN Hong -tao , ZHANG Shui -wei, MA Chun -cong, ZHAO Su. The Roles of Metallic Oxide in the Proceed of Alumina Production[J]. Chinese Materials Science Technology & Equipment, 2006, 3(2): 13-15 |
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| Authors: | SUN Hong -tao ZHANG Shui -wei MA Chun -cong ZHAO Su |
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| Affiliation: | 1. College of Chemical Engineering, Dalian University of Technology, Liaoning, Dalian, 116024, China; 2. School of Material, Shenyang Jianzhu University, Liaoning, Shenyang, 110168, China |
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| Abstract: | The roles of lime, magnesium oxide, barium in the proceed of alumina production are described. The additive of lime not only eliminates the factors which is harmful to the extract of alumina, but also accelerates the extracted speed; magnesium oxide removes the mineral of titanium, and decreases the ratio of silicon and natrium; barium can clear up the harmful anions of SO4^2- CO3^2- and SiO3^2- . The new achievements in study of this field both at home and abroad are introduced. |
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| Keywords: | Metallic oxide Bayer Alumina Sodium aluminate solution |
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