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Method for detecting quality of steelmaking auxiliary material dolomite

A detection method and technology for dolomite, applied in analytical materials, measuring devices, preparation of test samples, etc., can solve the problems of inaccurate evaluation of the quality of dolomite, and achieve easy implementation, not easy to break and pulverize, and uniform grain distribution. Effect

Pending Publication Date: 2021-06-04
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for detecting the quality of dolomite, a steelmaking auxiliary material, mainly to solve the technical problem that the quality of existing dolomite cannot be accurately evaluated

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  • Method for detecting quality of steelmaking auxiliary material dolomite

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[0017] The technical solutions provided by the present invention will be described in detail below in conjunction with specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention, but not as any limitation to the present invention.

[0018] A method for detecting the quality of steelmaking auxiliary material dolomite, comprising the following steps:

[0019] 1) Prepare the sample, and the dolomite sample that is taken symmetrically is crushed, and the particle diameter of the dolomite sample after crushing is 5-10mm; the dolomite sample is obtained through inlaying and grinding, and the light sheet for mineral phase microscope analysis is obtained. The size of the light sheet is φ30mm×20mm; the weight percentage of the chemical composition of the dolomite sample is: CaO≥30%, MgO≥19.0%, SiO 2 ≤2.5%, P≤0.07%, S≤0.025%.

[0020] 2) Take a photo of the mineral phase structure of the sample, take a photo o...

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Abstract

The invention discloses a method for detecting the quality of steelmaking auxiliary material dolomite. The method mainly solves the technical problem that the quality of existing dolomite cannot be accurately evaluated. The method for detecting the quality of steelmaking auxiliary material dolomite comprises the following steps: 1) preparing a sample, and crushing the weighed dolomite sample until the particle size of the crushed dolomite sample is 5-10mm; (2) taking a sample mineral phase structure picture; (3) detecting the ore phase structure of the sample; 4) judging the quality of the sample when the average grain size of the sample is <50[mu]m, the grain size standard deviation is <20 um, the sample is uniform in crystal grain distribution and free of obvious cracks among crystal grains, the sample being qualified, that is, the dolomite is not crushed or pulverized in the process of being calcined into the light-burned dolomite; otherwise, the sample quality being unqualified. The method is simple in process, easy and convenient to operate and convenient to implement; the detected quality of the limestone is accurate and reliable, and the detection cost is low.

Description

technical field [0001] The invention relates to a method for detecting the quality of dolomite, in particular to a method for detecting the quality of dolomite as an auxiliary material for steelmaking. Specifically, it involves detecting the quality of dolomite through dolomite mineral phase. The generated light-burned dolomite is used as an auxiliary material for oxygen converter steelmaking, and belongs to the technical field of quality analysis and phase detection of oxygen converter steelmaking auxiliary materials. Background technique [0002] The sleeve kiln is a relatively advanced lime production kiln in the world at present, and it has been widely used at home and abroad, mainly to provide high-quality auxiliary materials for the steelmaking process. The sleeve kiln has the advantages of low energy consumption, wide fuel adaptability, good product quality, high level of automation control, good environmental protection, small footprint, low equipment failure rate, e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N15/02G01N1/28
CPCG01N21/88G01N15/0227G01N1/286
Inventor 谢朝晖肖俊军毕传光韩凤光洪建国
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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