Method of quantitatively analyzing surface gasification reaction after iron coke vacuum packaging through high-temperature glue

Abstract

The invention discloses a method of quantitatively analyzing a surface gasification reaction after iron coke vacuum packaging through high-temperature glue. According to the method, the inorganic high-temperature glue is adopted to perform vacuum packaging on iron coke, interference caused by a gasification reaction on the bottom face and side face of the iron coke to a surface carbon matrix gasification reaction is eliminated, and the effects of iron coke fixed surface gasification reaction and analysis are achieved. According to the method, the inorganic high-temperature glue also can serveas a framework of the iron coke, meanwhile, a 3D microscope is used to observe a total pore area, a total surface area and a total pore volume in a selected region of the surface of a sample, the change relation of surface morphological characteristics over time in the iron coke gasification reaction process under different temperature is established, the change relation is used to quantitativelydescribe a gasification consumption mechanism of the iron coke in a blast furnace, and an iron coke gasification reaction evaluation method based on surface morphology evolution is formed. The methodcan provide theoretical guidance for quality evaluation and control of a reasonable adding proportion of the iron coke during blast furnace ironmaking and achieves the purposes of improving smelting efficiency, lowering a coke ratio and realizing green metallurgy.

Description

technical field [0001] The invention relates to the technical field of metallurgy and chemical industry, in particular to a method for quantitatively analyzing surface gasification reactions after iron coke is vacuum-packaged with high-temperature glue. Background technique [0002] Coke is an indispensable charge for blast furnace smelting, and the role of its material column skeleton is very important to ensure the smooth operation of the blast furnace and improve the efficiency of blast furnace smelting. This is also the reason why high-strength coke after reaction was generally pursued in the past. With the reduction of high-quality coking coal resources and ore resources, and the emphasis on environmental protection, the development and application of high-reactivity iron coke has received extensive attention. Metallic iron in high-reactivity iron coke has a strong catalytic effect on the carbon dissolution reaction, which can reduce the starting temperature of the coke...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of obvious diffusion in the gasification process of iron coke due to the influence of its own structure in order to solve the problem of obvious diffusion in the process of iron coke gasification reaction, and provide a high-temperature glue vacuum packaging iron coke for quantitative analysis of surface gasification The method of reaction is to use inorganic high-temperature glue to vacuum-encapsulate iron coke, so that the surface of iron coke (except the surface participating in the reaction) is protected by high-temperature glue, so as to ensure that the gasification reaction is carried out on the designated surface, and exclude other reaction surfaces of iron coke samples from gasification The interference of the reaction on the specified surface reaction is convenient for quantitative analysis of the change process of a specific area on the ferrocoke surface

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