Combined determination method for content of calcium and chlorine in solid sintering aid

Abstract

The invention relates to a combined determination method for calcium and chlorine contents in a solid sintering aid, which comprises the following steps: 1, sampling and preparing a sample, rapidly collecting a sintering aid sample by using a sampler, and carrying out sealed storage, 2, weighing the sample, rapidly weighing about 1g of the sample by using an electronic balance, and 3, decomposing the sample, heating by a proper amount of distilled water at low temperature to completely dissolve the sample, cooling and fixing the volume; 4, performing calcium content detection and partial sample solution separation; and 5, performing chlorine determination: taking part of the sample solution, titrating the solution by using a silver nitrate standard, titrating by using a potentiometric titrator, indicating an end point through potential mutation, and carrying out blank determination at the same time; 6, calculating a result. The calcium content in the sintering aid is determined by adopting an EDTA complexometric titration method, the chlorine content in the sintering aid is determined by adopting an automatic potentiometric titration method. The technical problem of rapid detection of the content of calcium and chlorine in the existing sintering aid for sintering production is mainly solved.

Description

technical field [0001] The invention relates to a determination method, in particular to a combined determination method for calcium and chlorine content in solid sintering aids, and belongs to the technical field of chemical analysis and detection. Background technique [0002] Sintering aids are widely used in ironmaking and sintering processes. Their use can reduce sintering temperature, reduce energy consumption, and improve sinter performance. However, in the post-production of the blast furnace, the chloride ions in the sintering aid will form corrosive acidic water with water during the wet dust removal process of blast furnace ash, which will cause corrosion to the blast furnace flue dust pipeline. Therefore, it is particularly important to detect the content of the components in the sintering aid before putting it into use, and to make appropriate preparations based on the test data. [0003] At present, the acceptance of sintering aid components in the production ...

AI Technical Summary

Problems solved by technology

[0006] The present invention is aimed at the problems existing in the prior art, and provides a joint determination method for calcium and chlorine content in solid sintering aids. The technical scheme selects a fast and effective sampling method, and uses EDTA complexometric titration to measure the sintering aids. Calcium content in sintering aids, and chlorine content in sintering aids by automatic potentiometric titration, which mainly solves the technical problem of rapid detection of calcium and chlorine content in sintering aids for sintering production

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