| 微波消解电感耦合等离子发射光谱法测定三水铝土矿中的有效铝、活性铝和活性硅 |
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| 引用本文： | 杨惠玲,班俊生,夏辉,王书勤,杜天军,王小强.微波消解电感耦合等离子发射光谱法测定三水铝土矿中的有效铝、活性铝和活性硅[J].岩矿测试,2017,36(3):246-251. |
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| 作者姓名： | 杨惠玲 班俊生 夏辉 王书勤 杜天军 王小强 |
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| 作者单位： | 河南省有色金属地质勘查总院, 河南 郑州 450052;河南省有色金属深部找矿勘查技术研究重点实验室, 河南 郑州 450052,河南省有色金属地质矿产局第二地质大队中心实验室, 河南 平顶山 467021,河南省有色金属地质勘查总院, 河南 郑州 450052;河南省有色金属深部找矿勘查技术研究重点实验室, 河南 郑州 450052,河南省有色金属地质勘查总院, 河南 郑州 450052;河南省有色金属深部找矿勘查技术研究重点实验室, 河南 郑州 450052,河南省有色金属地质勘查总院, 河南 郑州 450052;河南省有色金属深部找矿勘查技术研究重点实验室, 河南 郑州 450052,河南省有色金属地质勘查总院, 河南 郑州 450052;河南省有色金属深部找矿勘查技术研究重点实验室, 河南 郑州 450052 |
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| 基金项目： | 2016年度河南省“两权价款”地质科研类项目（豫财招标采购-2015-1992-03） |
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| 摘 要： | 有效铝、活性硅是判定三水铝土矿质量的重要指标,这两项指标的测定通常采用微波消解电感耦合等离子体发射光谱法(ICP-OES)。该方法首先测定出消解试液中的铝(即有效铝),再将剩余的残渣酸化溶解,进而测定出硅(即活性硅)。然而,由于消解试液不易澄清和残渣酸溶不完全,往往导致结果的重现性较差。本文对此方法作一改进,将消解的试液酸化加热,以钴为内标,采用ICP-OES同时测定出溶液中的活性铝和活性硅,然后间接计算出溶液中的有效铝。方法精密度(RSD,n=13)小于3%,回收率为97.0%~102.6%,用国际标准物质验证的测定结果与标准值吻合。本方法解决了消解后的溶液不易澄清和剩余残渣酸溶不完全的问题,克服了基体效应和仪器波动对测定结果的影响,能同时测定出活性铝和活性硅,并且提出的活性铝的概念可应用于三水铝土矿的综合评价和氧化铝生产工艺的调整。
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| 关 键 词： | 三水铝土矿 有效铝 活性硅 活性铝 微波消解 电感耦合等离子体发射光谱法 |
| 收稿时间： | 2016/6/12 0:00:00 |
| 修稿时间： | 2017/5/31 0:00:00 |
Determination of Available Alumina, Active Alumina and Active Silicon in Gibbsite Bauxite by Inductively Coupled Plasma-Optical Emission Spectrometry with Microwave Digestion |
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| YANG Hui-ling,BAN Jun-sheng,XIA Hui,WANG Shu-Qin,DU Tian-jun and WANG Xiao-qiang.Determination of Available Alumina, Active Alumina and Active Silicon in Gibbsite Bauxite by Inductively Coupled Plasma-Optical Emission Spectrometry with Microwave Digestion[J].Rock and Mineral Analysis,2017,36(3):246-251. |
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| Authors: | YANG Hui-ling BAN Jun-sheng XIA Hui WANG Shu-Qin DU Tian-jun and WANG Xiao-qiang |
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| Institution: | General Institute for Nonferrous Metals and Geological Exploration of Henan Province, Zhengzhou 450052, China;Key Laboratory of Deep Ore-prospecting Technology Research for Non-ferrous Metals of Henan Province, Zhengzhou 450052, China,The Second Branch of the Bureau of Geological Exploration of Non-Ferrous Metals of Henan, Pingdingshan 467021, China,General Institute for Nonferrous Metals and Geological Exploration of Henan Province, Zhengzhou 450052, China;Key Laboratory of Deep Ore-prospecting Technology Research for Non-ferrous Metals of Henan Province, Zhengzhou 450052, China,General Institute for Nonferrous Metals and Geological Exploration of Henan Province, Zhengzhou 450052, China;Key Laboratory of Deep Ore-prospecting Technology Research for Non-ferrous Metals of Henan Province, Zhengzhou 450052, China,General Institute for Nonferrous Metals and Geological Exploration of Henan Province, Zhengzhou 450052, China;Key Laboratory of Deep Ore-prospecting Technology Research for Non-ferrous Metals of Henan Province, Zhengzhou 450052, China and General Institute for Nonferrous Metals and Geological Exploration of Henan Province, Zhengzhou 450052, China;Key Laboratory of Deep Ore-prospecting Technology Research for Non-ferrous Metals of Henan Province, Zhengzhou 450052, China |
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| Abstract: | In this paper, problems existing in current detection methods that were commonly used to detect aluminum oxide and active silicon in gibbsite bauxite were discussed and analyzed. With combination of the microwave digestion technology and ICP-OES testing methods, a more simple and efficient testing technology for rapid determination of effective aluminum oxide and active silicon in bauxite was developed. This new method not only met the requirements of the alumina manufacturers, but also was an effective new technology which can be applied to quick determination of ore grade in the mineral prospecting. |
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| Keywords: | gibbsite available alumina reactive silicon reactive alumina microwave digestion Inductively Coupled Plasma-Optical Emission Spectrometry |
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