Determination of Chlorine Content in Zirconia Containing Special Refractories

doi:10.19691/j.cnki.1004-4493.2022.03.008

China's Refractories ›› 2022, Vol. 31 ›› Issue (3): 38-40.DOI: 10.19691/j.cnki.1004-4493.2022.03.008

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Determination of Chlorine Content in Zirconia Containing Special Refractories

XU Xiaoying^*, CAO Haijie, DUAN Xueke, LEI Xiaoyu

Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, ChinaKey words：zirconia; refractory materials; chlorine content; determination

Online:2022-07-15 Published:2022-11-07
Contact: ^*e-mail: xxy219@163.com
About author:Xu Xiaoying, born in 1986, is a senior engineer. She graduated and got her bachelor’s degree from Nanyang Normal University in 2008, majoring in applied chemistry. Since then, she has been working in Sinosteel Luoyang Institute of Refractories Research Co., Ltd., engaging in refractories testing, lab management and amending testing standards. In 2018, she got her master’s degree from Wuhan University of Science and Technology, majoring in materials engineering. Now, she is the director of the chemical lab of National Quality Supervision & Inspection Center. She completed the formulation and revision of 18 national refractory standards, and published 9 articles.

Abstract

Abstract: In this study, zirconia containing refractory samples were decomposed by dilute nitric acid. The chloride ion content in the leaching solution was determined by thiocyanate spectrophotometry. The influences of the leaching method of the sample pretreatment and the coloration condition of the solution to be tested on the test results were studied. The precision test was carried out and the results were compared with those determined by ion chromatography. The results showed that the zirconia containing refractories were boiled with dilute nitric acid to obtain the test solution. The influence of zirconium hydrolysis on determination was removed by centrifugation. The chlorine contents in zirconia containing refractories determined by spectrophotometry have low relative standard deviation (RSD), showing slight testing difference with those determined by ion chromatograghy.

Key words: zirconia, refractory materials, chlorine content, determination

XU Xiaoying, CAO Haijie, DUAN Xueke, LEI Xiaoyu. Determination of Chlorine Content in Zirconia Containing Special Refractories[J]. China's Refractories, 2022, 31(3): 38-40.

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Determination of Chlorine Content in Zirconia Containing Special Refractories

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