| 用氨净化—热离解法制取高纯WO_3 |
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| 引用本文： | 唐庚年. 用氨净化—热离解法制取高纯WO_3[J]. 湖南冶金职业技术学院学报, 2003, 0(2) |
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| 作者姓名： | 唐庚年 |
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| 作者单位： | 湖南冶金职业技术学院 湖南 |
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| 摘 要： | 将工业钨酸通过氨溶制得(NH_4)_2WO_4溶液,再将(NH_4)_2WO_4溶液蒸发得到的仲钨酸铵结晶,一次蒸发的仲钨酸铵又经热离解以改变其不溶于氨水的特性,再将热离解料氨溶,蒸发结晶。这样循环1～2次便可得到高纯度的三氧化钨。
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| 关 键 词： | 工业钨酸 氨净化 热离解 高纯三氧化钨 |
Producing WO_3 by Using Ammonium Depuration and Thermal Decomposition |
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| TANG Geng-nian. Producing WO_3 by Using Ammonium Depuration and Thermal Decomposition[J]. Journal of Hunan Metallurgical Professional Technology College, 2003, 0(2) |
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| Authors: | TANG Geng-nian |
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| Abstract: | This industial tugstic acid is treated with ammonia yielding ammonium tungstate solution(NH_4)_2WO_4, which is evaporated to get the resulting materials called ammonium paratungstate-APT. The first evaporated ammonium paratungstate is thermal decomposed, which will change the feature that does not solute in the ammonium. The resulting materials are treated with the ammonium again and finally evaporated. Repeating it once or twice, we will get the highly-purified yellow tungsten oxide(WO_3). |
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| Keywords: | industrial tungstic acid ammonia deputation thermal decomposition highly-purified WO_3 |
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