A kind of assay method of chromium trioxide in fire clay

Abstract

The present invention relates to a method for determining chromium oxide in fire clay. The method comprises: digesting chromium oxide in fire clay by using an alkaline fusion method, carrying out a bland test to establish a standard working curve having a certain gradient, and determining the chromium oxide content in fire clay by using an inductively coupled plasma atom emission spectrometer. According to the present invention, with the method, the analysis cycle is shortened, the labor intensity of workers is reduced, the quality process control on the analysis result is improved, the laboratory analysis means is developed, the detection capability is improved, the consumption of chemical reagents is reduced, the waste liquid emission is reduced, and the analysis cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of inspection and testing, and in particular relates to an analysis and determination method for the content of chromium trioxide in fire mud. Background technique [0002] For the determination of chromium trioxide in general fire clay, the existing technology is GB / T 5070-2007 wet chemical titration method. The existing analysis technology process is complex, requires high quality personnel, and the analysis cycle is long and labor-intensive. The quality control ability of the analysis results is poor, which restricts the production timeliness. In addition, under the requirements of the country to vigorously advocate environmental protection factories, the original method uses a large amount of chemical analysis reagents, which will inevitably have a negative impact on the environment and pollute the environment; moreover, the use of a large number of chemical reagents has also led to an increase in analys...

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Problems solved by technology

[0002] For the determination of chromium trioxide in general fire clay, the existing technology is GB / T 5070-2007 wet chemical titration method. The existing analysis technology process is complex, requires high quality personnel, and the analysis cycle is long and labor-intensive. The quality control ability of the analysis results is poor, which restricts the production timeliness

In addition, under the requirements of the country to vigorously advocate environmental protection factories, the original method uses a large amount of chemical analysis reagents, which will inevitably have a negative impact on the environment and pollute the environment; moreover, the use of a large number of chemical reagents has also led to an increase in analysis costs. In such a sluggish situation in the steel industry, reducing energy consumption and reducing costs is the theme we have always adhered to

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