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A kind of detection method of oxygen content in aluminum-calcium series deoxidizer

A detection method and deoxidizer technology, applied in the field of chemical analysis of steelmaking raw and auxiliary materials, can solve the problems of lack of standard reference materials in the detection process, inaccurate detection of oxygen content, incomplete release of oxygen elements, etc., to achieve accurate, comprehensive and efficient detection results Fast analysis, high accuracy results

Active Publication Date: 2022-05-10
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for detecting oxygen content in aluminum-calcium deoxidizers, which mainly solves the technical problem that the oxygen content in aluminum-calcium deoxidizers in the prior art cannot be accurately detected. The method of the present invention selects representative For the sample whose surface has been removed from the oxide layer, the preferred flux and the best sample flux ratio are used to overcome technical problems such as incomplete release of oxygen elements and lack of standard reference materials in the detection process, and realize the aluminum calcium deoxidizer. Fast and accurate detection of oxygen content

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Embodiment Construction

[0018] Below in conjunction with embodiment, the present invention will be further described.

[0019] A method for detecting oxygen content in an aluminum-calcium deoxidizer, comprising the following steps:

[0020] 1) To prepare the sample to be tested, first crush the aluminum-calcium series deoxidizer sample with a crusher for the first time, and select the aluminum-calcium series deoxidizer sample with a new fracture surface and no oxide layer with a particle size of 5 to 10 mm; Use a crusher to crush for 15 seconds; then sieve the crushed aluminum-calcium-based deoxidizer sample with a 200-mesh sieve, and prepare the sample to be tested after being divided into quarters, and put the sample to be tested into a sealed bag ;The test results of the oxygen content of the sample are not only related to the oxygen content of the sample itself, but also have a great relationship with whether the oxide on the surface of the material can be completely removed during sample prepara...

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Abstract

The invention discloses a method for detecting oxygen content in an aluminum-calcium deoxidizer, which mainly solves the technical problem that the oxygen content in the aluminum-calcium deoxidizer cannot be accurately detected in the prior art. The technical scheme of the present invention is: a method for detecting oxygen content in an aluminum-calcium series deoxidizer, comprising the following steps: 1) preparing a sample to be tested; 2) preparing a flux; 3) detecting the sample to be tested with an oxygen analyzer 4) Calculate the oxygen content in the aluminum-calcium series deoxidizer. The aluminum-calcium series deoxidizer applicable to this method is one or a combination of two or more of aluminum-calcium, aluminum-manganese-calcium, silicon-aluminum-calcium, aluminum-manganese-ferro, aluminum-silicon-calcium, and aluminum-magnesium-calcium. The measurement accuracy is high, the precision is good, the detection cost is low, and the efficiency is high.

Description

technical field [0001] The invention relates to a chemical analysis technology of raw and auxiliary materials for steelmaking, in particular to a method for detecting oxygen content in an aluminum-calcium series deoxidizer. Background technique [0002] Aluminum-calcium deoxidizer is a new type of deoxidizer developed for low-carbon steel in recent years, mainly including aluminum-calcium-iron, aluminum-manganese-calcium, silicon-aluminum-calcium and other compositions. The use of aluminum-calcium deoxidizer avoids the high cost and low utilization rate of pure calcium wire, and eliminates the traditional aluminum-based deoxidizer Al 2 o 3 Defects caused by inclusions. The aluminum-calcium deoxidizer has strong reducing ability, strong deoxidation and desulfurization performance, and can improve the form of deoxidized products in molten steel, generate multi-component slag system, promote the floating of deoxidized products, and be easy to discharge. At the same time, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3563G01N1/28
CPCG01N21/3563G01N1/286
Inventor 宋旭飞邓丽琴周丽萍
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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