Determination of 14 Major and Minor Elements in Dust Ash by X-ray Fluorescence Spectrometry with Powder-Pelleting-Lined Boric Acid Preparation

ZHOU Li-li; DONG Li-nan; ZHU Chun-yao; ZHANG Ji-ming

doi:10.15898/j.cnki.11-2131/td.202002280021

Rock and Mineral Analysis > 2021 > 40(4): 612-618. > DOI: 10.15898/j.cnki.11-2131/td.202002280021

ZHOU Li-li, DONG Li-nan, ZHU Chun-yao, ZHANG Ji-ming. Determination of 14 Major and Minor Elements in Dust Ash by X-ray Fluorescence Spectrometry with Powder-Pelleting-Lined Boric Acid Preparation[J]. Rock and Mineral Analysis, 2021, 40(4): 612-618. DOI: 10.15898/j.cnki.11-2131/td.202002280021

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Determination of 14 Major and Minor Elements in Dust Ash by X-ray Fluorescence Spectrometry with Powder-Pelleting-Lined Boric Acid Preparation

Jiangsu Province(Sha-Steel) Research Institute of Iron and Steel, Zhangjiagang 215625, China

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Received Date: February 27, 2020
Revised Date: March 13, 2021
Accepted Date: May 27, 2021
Published Date: July 27, 2021

Abstract

HIGHLIGHTS
(1) Standard reagents were added to the iron ore reference materials to prepare calibration samples with higher concentrations of potassium, sodium, zinc, and chlorine.

(2) The measurement ranges of potassium, sodium, zinc, and chlorine were 1.36%-12.00%, 0.43%-6.85%, 0.24%-35.00%, and 0.25%-10.00%, respectively.

(3) This method is suitable for the determination of potassium, sodium, zinc, and chlorine in the dust ash over a broad concentration range.

ABSTRACT

BACKGROUNDThe high content of potassium, sodium, zinc, and chlorine in dust ash significantly affects the stable operation of converter. To recycle the dust ash, it is necessary to accurately determine the contents of the components. Dust ash contains a broad range of potassium, sodium, zinc, and chlorine; therefore, the traditional X-ray fluorescence spectrometry (XRF) exceeds the range of the work curve.
OBJECTIVESTo develop a method for the determination of 14 components in the dust ash with a broad concentration range of potassium, sodium, zinc, and chlorine.
METHODSStandard reagents of potassium chloride, sodium chloride, and zinc oxide were added to commercially available iron ore standards in a quantitative manner to provide a new series of calibration samples with wide ranges of potassium, sodium, zinc, and chlorine contents. The 14 components in the dust ash were determined by XRF spectrometry with a powder-pelleting-lined boric acid preparation.
RESULTSThe measurement ranges of potassium, sodium, zinc, and chlorine were 1.36%-12.00%, 0.43%-6.85%, 0.24%-35.00%, and 0.25%-10.00%, respectively. The results of the 14 components in the dust ash were consistent with those of the traditional method, yielding a relative standard deviation of < 5.2% (n=7).
CONCLUSIONSXRF spectrometry with the powder-pelleting-lined boric acid preparation showed good accuracy and precision during the determination of 14 components in the dust ash.
- dust ash,
- major and minor elements,
- boric acid,
- powder pelleting perpetration,
- X-ray fluorescence spectrometry

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