Method for X-ray fluorimetric determination of fluorine elements in continuous casting slag

Abstract

The invention discloses a method for X-ray fluorimetric determination of fluorine elements in continuous casting slag, and mainly solves the problem that a conventional determination method is inaccurate. The provided method for X-ray fluorimetric determination of the fluorine elements in the continuous casting slag particularly comprises the following steps: preparing a sample, preparing a standard sample tablet, making a working curve, preparing a to-be-detected sample tablet, determining the strength by adopting an X-ray luminoscope, and substituting the strength into the made working curve to obtain the content of the fluorine elements. The fluorine elements are directly detected by using an X-ray fluorescence tabletting method, influence of other components in the sample does not need to be considered, the result is stable and accurate, and no damage is caused to the instrument.

Description

technical field [0001] The invention relates to a method for measuring fluorine element in continuous casting slag by X-ray fluorescence, and belongs to the technical field of steel smelting. Background technique [0002] Continuous casting mold flux contains a certain amount of fluorine. In the process of production and use, it will produce fluoride which is harmful to the environment and enter the air to pollute the air. The contact with water will directly cause the acidity of the water to rise rapidly, which will aggravate the corrosion of production equipment. Not only maintenance The cost increases, and the pressure on environmental protection is also great, so the content should be controlled below a certain level. Rapid and accurate detection of fluorine in continuous casting slag is of great significance for maintaining production equipment and protecting the environment. [0003] At present, fluorite is one of the main components of slagging agent, accounting for ...

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Problems solved by technology

At present, the chemical detection method and the X-ray fluorescence fusion method are generally used for fluorine, but due to the complex components in the slag, the results of the above methods are not ideal.

[0004] The traditional chemical analysis method is to measure the content of calcium element in calcium fluoride, and deduce the content of fluorine element in reverse, but the slag sample itself contains a large amount of calcium oxide, which will cause the detection result to be too high; use the fusion flake method for fluorescence For the analysis, it should be considered that the fluorine element is very active, and part of it will escape under high temperature conditions, and the obtained measurement results will be low and have poor stability. In addition, the composition of the slag is complex, and the use of a platinum crucible for melting will cause corrosion to the crucible itself.

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