| 碱熔除铁氟化物置换容量法测定铁矿石中的三氧化二铝 |
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| 引用本文： | 刘向东,苏丹,周春阳. 碱熔除铁氟化物置换容量法测定铁矿石中的三氧化二铝[J]. 吉林地质, 2014, 0(2): 132-134 |
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| 作者姓名： | 刘向东 苏丹 周春阳 |
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| 作者单位： | 吉林省有色金属地质勘查局研究所,吉林长春130012 |
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| 摘 要： | 试样经氢氧化钠碱熔,过滤分离铁等元素,将滤液酸化、DETA络合、氟化钠置换,再用硫酸铜标准溶液回滴释放出来的EDTA,从而实现对铝的测定,通过本方法对铁矿石标准物质及样品的测定,结果的相对标准偏差在0.93%~2.95%之间,且铁矿石标准物质测定值与认定值相符。
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| 关 键 词： | 碱熔除铁 铁矿石 三氧化二铝 |
Determination of aluminum oxide in iron ore by alkali molten iron removal lfuoride replacement volumetry |
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| LIU Xiang-Dong,SU Dan,ZHOU Chun-yang. Determination of aluminum oxide in iron ore by alkali molten iron removal lfuoride replacement volumetry[J]. Jilin Geology, 2014, 0(2): 132-134 |
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| Authors: | LIU Xiang-Dong SU Dan ZHOU Chun-yang |
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| Affiliation: | (Research Institute, Bureau of Nonferrous Metal Geological Exploration of Jilin Province, Changchun 130012, Jilin, China) |
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| Abstract: | The samples were melted by sodium hydroxide and sodium peroxide, and most of the interfering elements like Fe were separated through precipitation, the ifltrate was acidiifed, DETA complex, sodium lfuoride replacement, and released EDTA with copper sulfate standard solution back titration. Though this method for determination of standard material and sample of iron ore, it was found that the relative standard deviation （RSD） was in the range of 0.93%-2.95%, and estimated value of iron ore standard material results were consistent with the certiifed value. |
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| Keywords: | alkali molten iron removal iron ore aluminum oxide |
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