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Method for detecting oxygen content in aluminum-calcium deoxidizer

A detection method and deoxidizer technology, applied in the field of chemical analysis of raw and auxiliary materials for steelmaking, can solve problems such as incomplete release of oxygen elements, inaccurate detection of oxygen content, lack of standard reference materials in the detection process, etc., to achieve efficient, rapid analysis and accuracy High, good effect

Active Publication Date: 2020-05-15
SHANGHAI MEISHAN IRON & STEEL CO LTD
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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 the oxygen content in an aluminum-calcium deoxidizer, and mainly solves the technical problem that the oxygen content in the aluminum-calcium deoxidizercannot be accurately detected in the prior art. According to the technical scheme, the method for detecting the oxygen content in the aluminum-calcium deoxidizer comprises the following steps: 1) preparing a sample to be detected; 2) preparing a fluxing agent; 3) detecting an infrared light absorption response value of the to-be-tested sample by using an oxygen analyzer; and 4) calculating the oxygen content in the aluminum-calcium deoxidizer. The aluminum-calcium deoxidizer suitable for the method is one or a composition of two or more of aluminum-calcium, aluminum-manganese-calcium, silicon-aluminum-calcium, aluminum-manganese-iron, aluminum-silicon-calcium and aluminum-magnesium-calcium. The method provided by the invention has the advantages of high measurement accuracy, good precision, low detection cost and high efficiency.

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 Applications(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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