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YS/T 1033-2015: Determination of element contents in dry barrier - X-ray fluorescence spectrometric method
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YS/T 1033-2015: Determination of element contents in dry barrier - X-ray fluorescence spectrometric method

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(Determination of dry impermeable material elements in the X-ray fluorescence spectrometry) ICS 77.120.10 H30 People's Republic of China Nonferrous Metals Industry Standard Determination of dry impermeable material element content X-ray fluorescence spectrometry Issued on. 2015-04-30 2015-10-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) and focal points. This standard is drafted by. Aluminum Corporation of China Zhengzhou Research Institute, Technical and Economic Research Institute of Nonferrous Metals. Participated in the drafting of this standard. Aluminum Corporation of China Shandong Branch, Henan Branch of Aluminum Corporation of China, within Meng Guhuo coal Hongjunlvdian limited liability company. The main drafters. Zhang Aifen, Mahui Xia, white skies, Liu Jing, Yun-Xia Wang, Cong Mei, Ai Zhen, Wang Xiaowen, Li Zhihui, including Fang Fang. Determination of dry impermeable material element content X-ray fluorescence spectrometry

1 Scope

This standard specifies the method for determination of aluminum electrolytic with a dry impermeable feed nutrient contents. This standard applies to aluminum electrolysis dry impermeable compound of aluminum, silicon, iron, titanium, potassium, sodium, calcium and magnesium (oxides expressed as Al2O3, SiO2, Fe2O3, TiO2, K2O, Na2O, CaO, MgO) measurement. Determination of the range in Table 1. Table 1 Component content range /% range component content /% Al2O3 10.00 ~ 50.00 SiO2 10.00 ~ 60.00 Fe2O3 0.010 ~ 10.00 TiO2 0.010 ~ 5.00 K2O 0.010 ~ 5.00 Na2O 0.010 ~ 5.00 CaO 0.010 ~ 5.00 MgO 0.010 ~ 5.00

2 principle of the method

Sample was mixed with molten flux anhydrous lithium tetraborate and lithium metaborate to eliminate mineralogical effects and particle effects, and cast for X-ray Fluorescence spectrometer to measure the shape of the glass, glass measuring X-ray fluorescence intensity in the measured elements. According to the calibration curve or equation to points Analysis, calibration equation established with reference materials and inter-element interference effect correction. Matrix effect theoretical α coefficient or fundamental parameter method Absorption correction between elements - enhancing effect. Note. Due to the versatility of molten glass technology allows the use of a variety of flux and calibration mode. But it should meet certain reproducibility, sensitivity, and accuracy. If the A laboratory own method complies with the terms of, you can considered to meet this standard.

3 Reagents

3.1 anhydrous lithium tetraborate and lithium metaborate mixed flux [Li2B4O7 (12) LiBO2 (22)], the flux contains a certain amount of water, the following should be adopted One of two methods to compensate. a) burning 2h at 700 ℃, cooling backup in the dryer; B) When the flux per kg sufficiently mixed Take two parts, a predetermined melting temperature of the molten 10min, another predetermined melt Room melted, take the loss on ignition greater flux correction amount, according to equation (1) to calculate a correction factor. Flux should be sealed. Weekly or every Determination of loss on ignition kg once. F = 100-L (1) Where. F --- the correction factor; L --- Loss on ignition, expressed as a percentage. 3.2 the ammonium nitrate solution. 500g/L. ...