Due to the impact of subsequent process maintenance,the Luoyuan Mingguang No.1 blast furnace was shut down on July 25,2022. Before the shutdown,a detailed shutdown plan was formulated to control the appropriate pig iron compo-sition and material distribution matrix. During the shutdown process,the blast furnace process parameters were properly controlled,and gas recovery testing was carried out throughout the entire process. There were no phenomena such as detona-tion,suspension,or collapse in the furnace,achieving safe,environmentally friendly,and efficient shutdown.
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