The process of furnace condition adjustment and production increase of Tianjin steel tube BF after blowing in is summarized. Through active hearth, optimizing the upper and lower parts of the blast furnace, the stable distribution of two gas streams can be obtained. After the furnace condition is stable, the production can be enhanced by large air volume, large oxygen enrichment, high coal ratio and high top pressure, and the expected goal of stable and high production has been achieved.<br>
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