Measurement of acid-soluble silicon content in high-purity magnesium oxide products based on inductance-coupled plasma technology

WANG Jingfeng; LAI Chunhua; SUN Kang; SONG Xuewen; KONG Huimin; WANG Maosheng; LONG Yinglan

doi:10.13264/j.cnki.ysjskx.2022.04.016

Volume 13 Issue 4

Aug. 2022

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Nonferrous Metals Science and Engineering > 2022 > 13(4): 135-140. > DOI: 10.13264/j.cnki.ysjskx.2022.04.016

WANG Jingfeng, LAI Chunhua, SUN Kang, SONG Xuewen, KONG Huimin, WANG Maosheng, LONG Yinglan. Measurement of acid-soluble silicon content in high-purity magnesium oxide products based on inductance-coupled plasma technology[J]. Nonferrous Metals Science and Engineering, 2022, 13(4): 135-140. DOI: 10.13264/j.cnki.ysjskx.2022.04.016

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Measurement of acid-soluble silicon content in high-purity magnesium oxide products based on inductance-coupled plasma technology

WANG Jingfeng^{1, 2, 3, 4, ,},
LAI Chunhua^{1, 2},
SUN Kang¹,
SONG Xuewen⁵,
KONG Huimin¹,
WANG Maosheng^{1, 2, 3, 4},
LONG Yinglan^{1, 2, 3, 4}

1.
Technology Development of Western Mining Group Co., Ltd., Xining 810006, China
2.
The Engineering and Technology Research of Qinghai Western Mining Co., Ltd., Xining 810006, China
3.
Qinghai Key Laboratory of Plateau Mineral Processing Engineering and Comprehensive Utilization, Xining 810006, China
4.
Qinghai Nonferrous Mineral Resources Engineering Technology Research Center, Xining 810006, China
5.
College of Material Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

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Received Date: May 05, 2021
Revised Date: September 15, 2021
Available Online: September 02, 2022

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Abstract

Abstract

High pure magnesium oxide product purity reaches 99.9%. The silicon impurity content is one of the important indicators to evaluate its grade, and it is particularly important to determine it accurately. Routine standard curve methods cannot overcome the matrix effect of magnesium so that domestic counterparts routinely use matrix matching method to overcome such effect, but it is difficult to find magnesium containing miscellaneous elements and higher purity similar to high purity magnesium oxide products. The standard accession method is used as a technical means since its advantage is that it is very suitable for analyzing (super) trace elements in high magnesium matrix concentrations with high accuracy. This study dissolved the samples of hydrochloric acid. Taking the standard addition method as the technical method, inductively coupled plasma emission spectroscopy was used to establish a simple, fast, and accurate assay. The proposed method had a good linear relationship at the analytical spectral line of 251.611 nm, the detection limit of the method was 0.018 3 μg/mL, and the lower limit of determination was 0.061 0 μg/mL. In the actual high-purity magnesium oxide product test, the calibration recovery rate was between 97.86%-103.80%, which was suitable for determining acid-soluble silicon in high-purity magnesium oxide products and provided technical support for the determination of acid-soluble silicon content in magnesium oxide products of salt lake chemical enterprises.
- ICP-AES,
- standard addition method,
- high purity magnesium oxide,
- acid-soluble silicon

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References

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Measurement of acid-soluble silicon content in high-purity magnesium oxide products based on inductance-coupled plasma technology

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