Method for analyzing fluorine and chlorine in smelting dust through X-ray fluorescence spectroscopy

A technology of fluorescence spectrum and fluorescence spectrometer, which is applied in the field of metallurgical analysis, to achieve the effects of reducing consumption, increasing testing speed, and accurate and reliable data

Inactive Publication Date: 2018-12-18
YUNNAN CHIHONG ZINC & GERMANIUM
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Problems solved by technology

There is no relevant report on the measurement of fluorine and

Method used

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  • Method for analyzing fluorine and chlorine in smelting dust through X-ray fluorescence spectroscopy
  • Method for analyzing fluorine and chlorine in smelting dust through X-ray fluorescence spectroscopy
  • Method for analyzing fluorine and chlorine in smelting dust through X-ray fluorescence spectroscopy

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Embodiment 1

[0026] A method for X-ray fluorescence spectroscopic analysis of fluorine and chlorine in smelting flue dust, comprising the following steps:

[0027] (1) Preparation of analysis samples: Weigh 6.000±1 g of the sample, add 0.500-1.000 g of binder, put it into a vibration mill and grind it to -200 mesh, take an appropriate amount of sample into the mold of the tablet machine, and use 15-30 tons of The pressure is pressed and formed, and boric acid is added to the substrate to make the sample pressed into a uniform and smooth analysis sample, and the pressing process is held for 30-40 seconds;

[0028] (2) Preparation of standard samples and monitoring samples: Collect and sample zinc oxide dust from the smelting process, grind it to -200 mesh in a vibrating mill, and use colorimetry and volumetric analysis titration to analyze the fluorine and chlorine in the dust respectively. Through more than 30 repeated experiments, standard samples and monitoring samples with a concentrati...

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Abstract

The invention relates to a method for analyzing fluorine and chlorine in smelting dust through X-ray fluorescence spectroscopy, and belongs to the technical field of metallurgical analysis. The methodcomprises the following steps of 1 analysis specimen preparation; 2 standard sample and monitoring sample preparation; 3 measurement condition selection; 4 standard curve drawing; 5 drift correction;and 6 sample analysis. According to the method, an X-ray fluorescence spectrometer is creatively applied in detection on fluorine and chlorine in smelting gas, and the test rate of fluorine and chlorine in the smelting gas is greatly increased; only a small amount of boric acid and binder is needed, consumption of chemicals is reduced, and compared with an existing analysis method, generation ofwaste acid, waste water and the like in the analysis process is avoided, and not only is manpower saved, but also pollution is reduced; and in addition, data of the adopted method is accurate and reliable, analysis data is quickly and accurately provided for the metal smelting process, and therefore the method is more beneficial to production control.

Description

technical field [0001] The invention belongs to the technical field of metallurgical analysis, and in particular relates to a method for X-ray fluorescence spectrum analysis of fluorine and chlorine in smelting dust. Background technique [0002] During the metal smelting process, the fluorine and chlorine in the smelting flue gas will enter the electrolytic cell, which will cause great harm to the electrolysis process. Therefore, it is necessary to quickly measure the fluorine and chlorine content in the smelting flue gas for timely control. At present, fluorine in smelting flue gas is analyzed by colorimetry, the principle is that zirconium (Ⅳ) and xylenol orange form a red complex in 0.1-0.4mol / L hydrochloric acid solution, and if they encounter fluoride ions, they form a red complex. The colorless zirconium fluoride complex (ZrF6) with a larger stability constant will reduce the red color, and the higher the fluorine content, the more the red color will be reduced, so th...

Claims

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Application Information

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IPC IPC(8): G01N23/223
CPCG01N23/223
Inventor 杨建友谢庭芳顾利坤付光卢文鹏李杰张特
Owner YUNNAN CHIHONG ZINC & GERMANIUM
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