Sensitive and reliable testing method for synchronously testing multiple components in chrome drainage sand

Abstract

The invention discloses a sensitive and reliable testing method for synchronously testing multiple components in chrome drainage sand, and belongs to the technical field of metallurgical material test and analysis. A standard sample consists of dichromate, silica, clay brick, magnalium brick, vanadium-titanium magnetite tailing, vanadium slag and steel slag; and the content of each component is required to cover the content range of each corresponding to-be-tested component in the chrome drainage sand. The testing method comprises the following steps: weighing 6.0000 g of mixed flux of lithium tetraborate and lithium metaborate, 0.1500 g of standard sample or to-be-tested sample powder, and 0.0200g of a demoulding agent respectively, uniformly mixing, melting for 18-22 min at 1140-1160 DEG C, and venting and cooling melt to obtain a standard sheet or a test sheet; testing the standard sheet by using an X-ray fluorescence spectrometer, establishing an analyzing working curve, and correcting a matrix effect; testing the sample under the same conditions, and in combination with the analyzing working curve, obtaining the content testing result of each component. The testing method is high in accuracy, reproducibility and stability and is applicable to rapid determination of massive samples; by the testing method, real-time analysis data can be provided for industrial production; therefore, the testing method has relatively high popularization and application values.

Description

technical field [0001] The invention belongs to the technical field of metallurgical material testing and analysis, in particular to a sensitive and reliable multi-component synchronous detection method in chrome drainage sand. Background technique [0002] Chromium drainage sand is composed of chrome ore sand, quartz sea sand and high-temperature refractory materials, and is the filling material for the nozzle at the bottom of the ladle. High-quality chromium drainage sand has a large specific gravity, good fluidity, fast speed, and is resistant to corrosion and penetration of molten steel. It contains more than ten elements such as chromium, silicon, iron, magnesium, and calcium. The quality of sintering performance plays a very important role, which in turn will have a very important impact on improving smelting production efficiency, reducing molten steel pollution, reducing oxygen consumption, and improving production safety factors. If the performance of the drainage ...

AI Technical Summary

Problems solved by technology

In the determination of the chemical composition of chromium drainage sand, the traditional wet chemical method still occupies a large proportion. However, due to the poor acid solubility of most chromium drainage sand, the sample treatment is cumbersome, and most of them need to separate interfering elements, which is not conducive to Improved analysis accuracy and analysis speed

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