Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System
Niobium and tantalum in hydrofluoric acid can form a stable solution, and thus the Nb and Ta content of Nb-Ta ore can be determined accurately by Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) with a hydrofluoric acid resistant system. The determination method described in this p...
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| Format: | Article |
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Science Press, PR China
2016-06-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2016.03.009 |
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| author | MA Sheng-feng WEN Hong-li LI Bing WANG Lei ZHU Yun |
| author_facet | MA Sheng-feng WEN Hong-li LI Bing WANG Lei ZHU Yun |
| author_sort | MA Sheng-feng |
| collection | DOAJ |
| description | Niobium and tantalum in hydrofluoric acid can form a stable solution, and thus the Nb and Ta content of Nb-Ta ore can be determined accurately by Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) with a hydrofluoric acid resistant system. The determination method described in this paper for Nb and Ta in Nb-Ta ore, uses the microwave digestion mode of modular small tank and multiple digestion tank assembly (70 tank/group), and hydrofluoric acid resistant system of ICP-OES. This method shortens the dissolution time from 48 h to 1 h. By using a hydrofluoric acid medium the hydrolysis of high-level Nb and Ta in low acid concentration media is avoided. The detection limits of this method are 5.58 μg/g for Nb and 5.87 μg/g for Ta. The result of Nb-Ta concentrate with 19% Nb2O5 and 27% Ta2O5 is consistent with that acquired by the alkali fusion method and can be used to determine both high-grade and low-grade Nb-Ta ore with 42 μg/g-19% of Nb2O5 and 86 μg/g-27% of Ta2O5. The main advantage of this method is to accurately determine Nb and Ta in high-grade Nb-Ta ore. |
| first_indexed | 2024-04-10T16:28:21Z |
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| id | doaj.art-bc5f85b329af4888ab28eae561dc66eb |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T16:28:21Z |
| publishDate | 2016-06-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-bc5f85b329af4888ab28eae561dc66eb2023-02-09T01:26:03ZengScience Press, PR ChinaYankuang ceshi0254-53572016-06-0135327127510.15898/j.cnki.11-2131/td.2016.03.009ykcs-35-3-271Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant SystemMA Sheng-feng0WEN Hong-li1LI Bing2WANG Lei3ZHU Yun4National Research Center for Geoanalysis, Beijing 100037, ChinaNational Research Center for Geoanalysis, Beijing 100037, ChinaNational Research Center for Geoanalysis, Beijing 100037, ChinaNational Research Center for Geoanalysis, Beijing 100037, ChinaNational Research Center for Geoanalysis, Beijing 100037, ChinaNiobium and tantalum in hydrofluoric acid can form a stable solution, and thus the Nb and Ta content of Nb-Ta ore can be determined accurately by Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) with a hydrofluoric acid resistant system. The determination method described in this paper for Nb and Ta in Nb-Ta ore, uses the microwave digestion mode of modular small tank and multiple digestion tank assembly (70 tank/group), and hydrofluoric acid resistant system of ICP-OES. This method shortens the dissolution time from 48 h to 1 h. By using a hydrofluoric acid medium the hydrolysis of high-level Nb and Ta in low acid concentration media is avoided. The detection limits of this method are 5.58 μg/g for Nb and 5.87 μg/g for Ta. The result of Nb-Ta concentrate with 19% Nb2O5 and 27% Ta2O5 is consistent with that acquired by the alkali fusion method and can be used to determine both high-grade and low-grade Nb-Ta ore with 42 μg/g-19% of Nb2O5 and 86 μg/g-27% of Ta2O5. The main advantage of this method is to accurately determine Nb and Ta in high-grade Nb-Ta ore.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2016.03.009niobium-tantalum oreniobiumtantalummicrowave meltinginductively coupled plasma-optical emission spectrometryhydrofluoric acid-resistant system |
| spellingShingle | MA Sheng-feng WEN Hong-li LI Bing WANG Lei ZHU Yun Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System Yankuang ceshi niobium-tantalum ore niobium tantalum microwave melting inductively coupled plasma-optical emission spectrometry hydrofluoric acid-resistant system |
| title | Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System |
| title_full | Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System |
| title_fullStr | Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System |
| title_full_unstemmed | Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System |
| title_short | Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System |
| title_sort | determination of nb and ta in nb ta ore by inductively coupled plasma optical emission spectrometry with a combined microwave digestion hydrofluoric acid resistant system |
| topic | niobium-tantalum ore niobium tantalum microwave melting inductively coupled plasma-optical emission spectrometry hydrofluoric acid-resistant system |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2016.03.009 |
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