| 文山铝土矿A12O3测试中半二甲酚橙的作用 |
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| 引用本文： | 李跃松,柳昆华,戈润韬.文山铝土矿A12O3测试中半二甲酚橙的作用[J].云南地质,2010,29(4):456-457. |
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| 作者姓名： | 李跃松 柳昆华 戈润韬 |
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| 作者单位： | 云南省有色地质局测试中心,昆明650216 |
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| 摘 要： | 一水硬铝石及含刚玉（A12O3）铝土矿的测试较困难。NaF置换滴定法以二甲酚橙及半二甲酚橙较敏锐。可用半二甲酚橙（变色酸度在PH=5～6）直接调节酸度，再用作滴定的指示剂，效果较好。
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| 关 键 词： | 加NaOH拌匀 750℃熔融并摇匀 半二酚橙 文山铝土矿 |
THE FUNCTION OF SEMI-XYLENOL ORANGE IN THE TESTING OF Al2O3 OF BAUXITE IN WENSHAN |
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| LI Yue-song,LIU Kun-hua,GE Run-tao.THE FUNCTION OF SEMI-XYLENOL ORANGE IN THE TESTING OF Al2O3 OF BAUXITE IN WENSHAN[J].Yunnan Geology,2010,29(4):456-457. |
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| Authors: | LI Yue-song LIU Kun-hua GE Run-tao |
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| Institution: | ( Testing Centor, Yunnan Bureau of Nonferrous Geology, Kunming 650216) |
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| Abstract: | The testing of diasporite and bauxite bearing corundite is difficult. The xylenol orange and Semi - xylenol orange are sensitive in the NaF replacement titration method. We can use the semi -xylenol orange （color changing acidity PH5 -6） to adjust directly the acidity, and then to be the titration indicator. |
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| Keywords: | Add NaOH and Mix Thoroughly Smelting at 750℃ and Shaking Thoroughly Semi - Xylenol Orange Bauxite Deposit of Wenshan |
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