04-07-2023 дата публикации
Номер: CN116377146A
Принадлежит:
The invention relates to the technical field of blast furnace ironmaking, in particular to a method for reducing fuel ratio during scrap steel charging, which comprises the following steps: after scrap steel is subjected to hot melting and briquetting, a charging raw material tiling technology is adopted, the scrap steel tiling rate is adjusted, time delay is controlled, the scrap steel is added to the center and the edge of a blast furnace, and two streams of airflow at the center and the edge are stabilized. Iron-containing raw materials are fully utilized, the comprehensive furnace feeding grade is improved, the slag ratio is reduced, on the basis of stabilizing blast furnace airflow, the coal gas utilization rate is gradually increased, the water temperature difference is reduced, and finally the fuel ratio is adjusted according to an empirical formula. The adjusting amplitude is small, the fuel ratio can be effectively reduced, and the method is particularly suitable for large blast ...
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